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Commit | Line | Data |
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9b6b563c PM |
1 | /* |
2 | * Procedures for interfacing to Open Firmware. | |
3 | * | |
4 | * Paul Mackerras August 1996. | |
5 | * Copyright (C) 1996-2005 Paul Mackerras. | |
6 | * | |
7 | * Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner. | |
8 | * {engebret|bergner}@us.ibm.com | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License | |
12 | * as published by the Free Software Foundation; either version | |
13 | * 2 of the License, or (at your option) any later version. | |
14 | */ | |
15 | ||
16 | #undef DEBUG_PROM | |
17 | ||
18 | #include <stdarg.h> | |
9b6b563c PM |
19 | #include <linux/kernel.h> |
20 | #include <linux/string.h> | |
21 | #include <linux/init.h> | |
22 | #include <linux/threads.h> | |
23 | #include <linux/spinlock.h> | |
24 | #include <linux/types.h> | |
25 | #include <linux/pci.h> | |
26 | #include <linux/proc_fs.h> | |
27 | #include <linux/stringify.h> | |
28 | #include <linux/delay.h> | |
29 | #include <linux/initrd.h> | |
30 | #include <linux/bitops.h> | |
31 | #include <asm/prom.h> | |
32 | #include <asm/rtas.h> | |
33 | #include <asm/page.h> | |
34 | #include <asm/processor.h> | |
35 | #include <asm/irq.h> | |
36 | #include <asm/io.h> | |
37 | #include <asm/smp.h> | |
9b6b563c PM |
38 | #include <asm/mmu.h> |
39 | #include <asm/pgtable.h> | |
9b6b563c | 40 | #include <asm/iommu.h> |
9b6b563c PM |
41 | #include <asm/btext.h> |
42 | #include <asm/sections.h> | |
43 | #include <asm/machdep.h> | |
27f44888 | 44 | #include <asm/opal.h> |
0545d543 | 45 | #include <asm/asm-prototypes.h> |
9b6b563c | 46 | |
9b6b563c | 47 | #include <linux/linux_logo.h> |
9b6b563c | 48 | |
9b6b563c PM |
49 | /* |
50 | * Eventually bump that one up | |
51 | */ | |
52 | #define DEVTREE_CHUNK_SIZE 0x100000 | |
53 | ||
54 | /* | |
55 | * This is the size of the local memory reserve map that gets copied | |
56 | * into the boot params passed to the kernel. That size is totally | |
57 | * flexible as the kernel just reads the list until it encounters an | |
58 | * entry with size 0, so it can be changed without breaking binary | |
59 | * compatibility | |
60 | */ | |
61 | #define MEM_RESERVE_MAP_SIZE 8 | |
62 | ||
63 | /* | |
64 | * prom_init() is called very early on, before the kernel text | |
65 | * and data have been mapped to KERNELBASE. At this point the code | |
66 | * is running at whatever address it has been loaded at. | |
67 | * On ppc32 we compile with -mrelocatable, which means that references | |
68 | * to extern and static variables get relocated automatically. | |
5ac47f7a AB |
69 | * ppc64 objects are always relocatable, we just need to relocate the |
70 | * TOC. | |
9b6b563c PM |
71 | * |
72 | * Because OF may have mapped I/O devices into the area starting at | |
73 | * KERNELBASE, particularly on CHRP machines, we can't safely call | |
74 | * OF once the kernel has been mapped to KERNELBASE. Therefore all | |
75 | * OF calls must be done within prom_init(). | |
76 | * | |
77 | * ADDR is used in calls to call_prom. The 4th and following | |
78 | * arguments to call_prom should be 32-bit values. | |
79 | * On ppc64, 64 bit values are truncated to 32 bits (and | |
80 | * fortunately don't get interpreted as two arguments). | |
81 | */ | |
5ac47f7a AB |
82 | #define ADDR(x) (u32)(unsigned long)(x) |
83 | ||
9b6b563c | 84 | #ifdef CONFIG_PPC64 |
a23414be | 85 | #define OF_WORKAROUNDS 0 |
9b6b563c | 86 | #else |
a23414be PM |
87 | #define OF_WORKAROUNDS of_workarounds |
88 | int of_workarounds; | |
9b6b563c PM |
89 | #endif |
90 | ||
a23414be PM |
91 | #define OF_WA_CLAIM 1 /* do phys/virt claim separately, then map */ |
92 | #define OF_WA_LONGTRAIL 2 /* work around longtrail bugs */ | |
93 | ||
9b6b563c PM |
94 | #define PROM_BUG() do { \ |
95 | prom_printf("kernel BUG at %s line 0x%x!\n", \ | |
5827d416 | 96 | __FILE__, __LINE__); \ |
9b6b563c PM |
97 | __asm__ __volatile__(".long " BUG_ILLEGAL_INSTR); \ |
98 | } while (0) | |
99 | ||
100 | #ifdef DEBUG_PROM | |
101 | #define prom_debug(x...) prom_printf(x) | |
102 | #else | |
103 | #define prom_debug(x...) | |
104 | #endif | |
105 | ||
9b6b563c PM |
106 | |
107 | typedef u32 prom_arg_t; | |
108 | ||
109 | struct prom_args { | |
493adffc BH |
110 | __be32 service; |
111 | __be32 nargs; | |
112 | __be32 nret; | |
113 | __be32 args[10]; | |
9b6b563c PM |
114 | }; |
115 | ||
116 | struct prom_t { | |
117 | ihandle root; | |
a23414be | 118 | phandle chosen; |
9b6b563c PM |
119 | int cpu; |
120 | ihandle stdout; | |
a575b807 | 121 | ihandle mmumap; |
a23414be | 122 | ihandle memory; |
9b6b563c PM |
123 | }; |
124 | ||
125 | struct mem_map_entry { | |
493adffc BH |
126 | __be64 base; |
127 | __be64 size; | |
9b6b563c PM |
128 | }; |
129 | ||
493adffc | 130 | typedef __be32 cell_t; |
9b6b563c | 131 | |
6e35d5da BH |
132 | extern void __start(unsigned long r3, unsigned long r4, unsigned long r5, |
133 | unsigned long r6, unsigned long r7, unsigned long r8, | |
134 | unsigned long r9); | |
9b6b563c PM |
135 | |
136 | #ifdef CONFIG_PPC64 | |
c4988820 | 137 | extern int enter_prom(struct prom_args *args, unsigned long entry); |
9b6b563c | 138 | #else |
c4988820 | 139 | static inline int enter_prom(struct prom_args *args, unsigned long entry) |
9b6b563c | 140 | { |
c4988820 | 141 | return ((int (*)(struct prom_args *))entry)(args); |
9b6b563c PM |
142 | } |
143 | #endif | |
144 | ||
145 | extern void copy_and_flush(unsigned long dest, unsigned long src, | |
146 | unsigned long size, unsigned long offset); | |
147 | ||
148 | /* prom structure */ | |
149 | static struct prom_t __initdata prom; | |
150 | ||
151 | static unsigned long prom_entry __initdata; | |
152 | ||
153 | #define PROM_SCRATCH_SIZE 256 | |
154 | ||
155 | static char __initdata of_stdout_device[256]; | |
156 | static char __initdata prom_scratch[PROM_SCRATCH_SIZE]; | |
157 | ||
158 | static unsigned long __initdata dt_header_start; | |
159 | static unsigned long __initdata dt_struct_start, dt_struct_end; | |
160 | static unsigned long __initdata dt_string_start, dt_string_end; | |
161 | ||
162 | static unsigned long __initdata prom_initrd_start, prom_initrd_end; | |
163 | ||
164 | #ifdef CONFIG_PPC64 | |
165785e5 JK |
165 | static int __initdata prom_iommu_force_on; |
166 | static int __initdata prom_iommu_off; | |
9b6b563c PM |
167 | static unsigned long __initdata prom_tce_alloc_start; |
168 | static unsigned long __initdata prom_tce_alloc_end; | |
169 | #endif | |
170 | ||
014d02cb SJS |
171 | static bool __initdata prom_radix_disable; |
172 | ||
173 | struct platform_support { | |
174 | bool hash_mmu; | |
175 | bool radix_mmu; | |
176 | bool radix_gtse; | |
177 | }; | |
178 | ||
e8222502 BH |
179 | /* Platforms codes are now obsolete in the kernel. Now only used within this |
180 | * file and ultimately gone too. Feel free to change them if you need, they | |
181 | * are not shared with anything outside of this file anymore | |
182 | */ | |
183 | #define PLATFORM_PSERIES 0x0100 | |
184 | #define PLATFORM_PSERIES_LPAR 0x0101 | |
185 | #define PLATFORM_LPAR 0x0001 | |
186 | #define PLATFORM_POWERMAC 0x0400 | |
187 | #define PLATFORM_GENERIC 0x0500 | |
27f44888 | 188 | #define PLATFORM_OPAL 0x0600 |
e8222502 | 189 | |
9b6b563c PM |
190 | static int __initdata of_platform; |
191 | ||
192 | static char __initdata prom_cmd_line[COMMAND_LINE_SIZE]; | |
193 | ||
cf68787b BK |
194 | static unsigned long __initdata prom_memory_limit; |
195 | ||
9b6b563c PM |
196 | static unsigned long __initdata alloc_top; |
197 | static unsigned long __initdata alloc_top_high; | |
198 | static unsigned long __initdata alloc_bottom; | |
199 | static unsigned long __initdata rmo_top; | |
200 | static unsigned long __initdata ram_top; | |
201 | ||
202 | static struct mem_map_entry __initdata mem_reserve_map[MEM_RESERVE_MAP_SIZE]; | |
203 | static int __initdata mem_reserve_cnt; | |
204 | ||
205 | static cell_t __initdata regbuf[1024]; | |
206 | ||
dbe78b40 BH |
207 | static bool rtas_has_query_cpu_stopped; |
208 | ||
9b6b563c | 209 | |
9b6b563c PM |
210 | /* |
211 | * Error results ... some OF calls will return "-1" on error, some | |
212 | * will return 0, some will return either. To simplify, here are | |
213 | * macros to use with any ihandle or phandle return value to check if | |
214 | * it is valid | |
215 | */ | |
216 | ||
217 | #define PROM_ERROR (-1u) | |
218 | #define PHANDLE_VALID(p) ((p) != 0 && (p) != PROM_ERROR) | |
219 | #define IHANDLE_VALID(i) ((i) != 0 && (i) != PROM_ERROR) | |
220 | ||
221 | ||
222 | /* This is the one and *ONLY* place where we actually call open | |
223 | * firmware. | |
224 | */ | |
225 | ||
226 | static int __init call_prom(const char *service, int nargs, int nret, ...) | |
227 | { | |
228 | int i; | |
229 | struct prom_args args; | |
230 | va_list list; | |
231 | ||
493adffc BH |
232 | args.service = cpu_to_be32(ADDR(service)); |
233 | args.nargs = cpu_to_be32(nargs); | |
234 | args.nret = cpu_to_be32(nret); | |
9b6b563c PM |
235 | |
236 | va_start(list, nret); | |
237 | for (i = 0; i < nargs; i++) | |
493adffc | 238 | args.args[i] = cpu_to_be32(va_arg(list, prom_arg_t)); |
9b6b563c PM |
239 | va_end(list); |
240 | ||
241 | for (i = 0; i < nret; i++) | |
242 | args.args[nargs+i] = 0; | |
243 | ||
5827d416 | 244 | if (enter_prom(&args, prom_entry) < 0) |
c4988820 | 245 | return PROM_ERROR; |
9b6b563c | 246 | |
493adffc | 247 | return (nret > 0) ? be32_to_cpu(args.args[nargs]) : 0; |
9b6b563c PM |
248 | } |
249 | ||
250 | static int __init call_prom_ret(const char *service, int nargs, int nret, | |
251 | prom_arg_t *rets, ...) | |
252 | { | |
253 | int i; | |
254 | struct prom_args args; | |
255 | va_list list; | |
256 | ||
493adffc BH |
257 | args.service = cpu_to_be32(ADDR(service)); |
258 | args.nargs = cpu_to_be32(nargs); | |
259 | args.nret = cpu_to_be32(nret); | |
9b6b563c PM |
260 | |
261 | va_start(list, rets); | |
262 | for (i = 0; i < nargs; i++) | |
493adffc | 263 | args.args[i] = cpu_to_be32(va_arg(list, prom_arg_t)); |
9b6b563c PM |
264 | va_end(list); |
265 | ||
266 | for (i = 0; i < nret; i++) | |
ed1189b7 | 267 | args.args[nargs+i] = 0; |
9b6b563c | 268 | |
5827d416 | 269 | if (enter_prom(&args, prom_entry) < 0) |
c4988820 | 270 | return PROM_ERROR; |
9b6b563c PM |
271 | |
272 | if (rets != NULL) | |
273 | for (i = 1; i < nret; ++i) | |
493adffc | 274 | rets[i-1] = be32_to_cpu(args.args[nargs+i]); |
9b6b563c | 275 | |
493adffc | 276 | return (nret > 0) ? be32_to_cpu(args.args[nargs]) : 0; |
9b6b563c PM |
277 | } |
278 | ||
279 | ||
9b6b563c PM |
280 | static void __init prom_print(const char *msg) |
281 | { | |
282 | const char *p, *q; | |
9b6b563c | 283 | |
5827d416 | 284 | if (prom.stdout == 0) |
9b6b563c PM |
285 | return; |
286 | ||
287 | for (p = msg; *p != 0; p = q) { | |
288 | for (q = p; *q != 0 && *q != '\n'; ++q) | |
289 | ; | |
290 | if (q > p) | |
5827d416 | 291 | call_prom("write", 3, 1, prom.stdout, p, q - p); |
9b6b563c PM |
292 | if (*q == 0) |
293 | break; | |
294 | ++q; | |
5827d416 | 295 | call_prom("write", 3, 1, prom.stdout, ADDR("\r\n"), 2); |
9b6b563c PM |
296 | } |
297 | } | |
298 | ||
299 | ||
300 | static void __init prom_print_hex(unsigned long val) | |
301 | { | |
302 | int i, nibbles = sizeof(val)*2; | |
303 | char buf[sizeof(val)*2+1]; | |
9b6b563c PM |
304 | |
305 | for (i = nibbles-1; i >= 0; i--) { | |
306 | buf[i] = (val & 0xf) + '0'; | |
307 | if (buf[i] > '9') | |
308 | buf[i] += ('a'-'0'-10); | |
309 | val >>= 4; | |
310 | } | |
311 | buf[nibbles] = '\0'; | |
5827d416 | 312 | call_prom("write", 3, 1, prom.stdout, buf, nibbles); |
9b6b563c PM |
313 | } |
314 | ||
2c48a7d6 MN |
315 | /* max number of decimal digits in an unsigned long */ |
316 | #define UL_DIGITS 21 | |
317 | static void __init prom_print_dec(unsigned long val) | |
318 | { | |
319 | int i, size; | |
320 | char buf[UL_DIGITS+1]; | |
2c48a7d6 MN |
321 | |
322 | for (i = UL_DIGITS-1; i >= 0; i--) { | |
323 | buf[i] = (val % 10) + '0'; | |
324 | val = val/10; | |
325 | if (val == 0) | |
326 | break; | |
327 | } | |
328 | /* shift stuff down */ | |
329 | size = UL_DIGITS - i; | |
5827d416 | 330 | call_prom("write", 3, 1, prom.stdout, buf+i, size); |
2c48a7d6 | 331 | } |
9b6b563c PM |
332 | |
333 | static void __init prom_printf(const char *format, ...) | |
334 | { | |
335 | const char *p, *q, *s; | |
336 | va_list args; | |
337 | unsigned long v; | |
af277149 | 338 | long vs; |
9b6b563c PM |
339 | |
340 | va_start(args, format); | |
9b6b563c PM |
341 | for (p = format; *p != 0; p = q) { |
342 | for (q = p; *q != 0 && *q != '\n' && *q != '%'; ++q) | |
343 | ; | |
344 | if (q > p) | |
5827d416 | 345 | call_prom("write", 3, 1, prom.stdout, p, q - p); |
9b6b563c PM |
346 | if (*q == 0) |
347 | break; | |
348 | if (*q == '\n') { | |
349 | ++q; | |
5827d416 | 350 | call_prom("write", 3, 1, prom.stdout, |
9b6b563c PM |
351 | ADDR("\r\n"), 2); |
352 | continue; | |
353 | } | |
354 | ++q; | |
355 | if (*q == 0) | |
356 | break; | |
357 | switch (*q) { | |
358 | case 's': | |
359 | ++q; | |
360 | s = va_arg(args, const char *); | |
361 | prom_print(s); | |
362 | break; | |
363 | case 'x': | |
364 | ++q; | |
365 | v = va_arg(args, unsigned long); | |
366 | prom_print_hex(v); | |
367 | break; | |
af277149 BH |
368 | case 'd': |
369 | ++q; | |
370 | vs = va_arg(args, int); | |
371 | if (vs < 0) { | |
5827d416 | 372 | prom_print("-"); |
af277149 BH |
373 | vs = -vs; |
374 | } | |
375 | prom_print_dec(vs); | |
376 | break; | |
2c48a7d6 MN |
377 | case 'l': |
378 | ++q; | |
af277149 BH |
379 | if (*q == 0) |
380 | break; | |
381 | else if (*q == 'x') { | |
382 | ++q; | |
383 | v = va_arg(args, unsigned long); | |
384 | prom_print_hex(v); | |
385 | } else if (*q == 'u') { /* '%lu' */ | |
2c48a7d6 MN |
386 | ++q; |
387 | v = va_arg(args, unsigned long); | |
388 | prom_print_dec(v); | |
af277149 BH |
389 | } else if (*q == 'd') { /* %ld */ |
390 | ++q; | |
391 | vs = va_arg(args, long); | |
392 | if (vs < 0) { | |
5827d416 | 393 | prom_print("-"); |
af277149 BH |
394 | vs = -vs; |
395 | } | |
396 | prom_print_dec(vs); | |
2c48a7d6 MN |
397 | } |
398 | break; | |
9b6b563c PM |
399 | } |
400 | } | |
1b855e16 | 401 | va_end(args); |
9b6b563c PM |
402 | } |
403 | ||
404 | ||
a575b807 PM |
405 | static unsigned int __init prom_claim(unsigned long virt, unsigned long size, |
406 | unsigned long align) | |
407 | { | |
a575b807 | 408 | |
a23414be PM |
409 | if (align == 0 && (OF_WORKAROUNDS & OF_WA_CLAIM)) { |
410 | /* | |
411 | * Old OF requires we claim physical and virtual separately | |
412 | * and then map explicitly (assuming virtual mode) | |
413 | */ | |
414 | int ret; | |
415 | prom_arg_t result; | |
416 | ||
417 | ret = call_prom_ret("call-method", 5, 2, &result, | |
5827d416 | 418 | ADDR("claim"), prom.memory, |
a23414be PM |
419 | align, size, virt); |
420 | if (ret != 0 || result == -1) | |
421 | return -1; | |
422 | ret = call_prom_ret("call-method", 5, 2, &result, | |
5827d416 | 423 | ADDR("claim"), prom.mmumap, |
a23414be PM |
424 | align, size, virt); |
425 | if (ret != 0) { | |
426 | call_prom("call-method", 4, 1, ADDR("release"), | |
5827d416 | 427 | prom.memory, size, virt); |
a23414be PM |
428 | return -1; |
429 | } | |
430 | /* the 0x12 is M (coherence) + PP == read/write */ | |
a575b807 | 431 | call_prom("call-method", 6, 1, |
5827d416 | 432 | ADDR("map"), prom.mmumap, 0x12, size, virt, virt); |
a23414be PM |
433 | return virt; |
434 | } | |
435 | return call_prom("claim", 3, 1, (prom_arg_t)virt, (prom_arg_t)size, | |
436 | (prom_arg_t)align); | |
a575b807 PM |
437 | } |
438 | ||
9b6b563c PM |
439 | static void __init __attribute__((noreturn)) prom_panic(const char *reason) |
440 | { | |
9b6b563c | 441 | prom_print(reason); |
add60ef3 OH |
442 | /* Do not call exit because it clears the screen on pmac |
443 | * it also causes some sort of double-fault on early pmacs */ | |
5827d416 | 444 | if (of_platform == PLATFORM_POWERMAC) |
add60ef3 OH |
445 | asm("trap\n"); |
446 | ||
1d9a4731 | 447 | /* ToDo: should put up an SRC here on pSeries */ |
9b6b563c PM |
448 | call_prom("exit", 0, 0); |
449 | ||
450 | for (;;) /* should never get here */ | |
451 | ; | |
452 | } | |
453 | ||
454 | ||
455 | static int __init prom_next_node(phandle *nodep) | |
456 | { | |
457 | phandle node; | |
458 | ||
459 | if ((node = *nodep) != 0 | |
460 | && (*nodep = call_prom("child", 1, 1, node)) != 0) | |
461 | return 1; | |
462 | if ((*nodep = call_prom("peer", 1, 1, node)) != 0) | |
463 | return 1; | |
464 | for (;;) { | |
465 | if ((node = call_prom("parent", 1, 1, node)) == 0) | |
466 | return 0; | |
467 | if ((*nodep = call_prom("peer", 1, 1, node)) != 0) | |
468 | return 1; | |
469 | } | |
470 | } | |
471 | ||
60d862e5 | 472 | static inline int prom_getprop(phandle node, const char *pname, |
9b6b563c PM |
473 | void *value, size_t valuelen) |
474 | { | |
475 | return call_prom("getprop", 4, 1, node, ADDR(pname), | |
476 | (u32)(unsigned long) value, (u32) valuelen); | |
477 | } | |
478 | ||
60d862e5 | 479 | static inline int prom_getproplen(phandle node, const char *pname) |
9b6b563c PM |
480 | { |
481 | return call_prom("getproplen", 2, 1, node, ADDR(pname)); | |
482 | } | |
483 | ||
a23414be | 484 | static void add_string(char **str, const char *q) |
9b6b563c | 485 | { |
a23414be PM |
486 | char *p = *str; |
487 | ||
488 | while (*q) | |
489 | *p++ = *q++; | |
490 | *p++ = ' '; | |
491 | *str = p; | |
492 | } | |
493 | ||
494 | static char *tohex(unsigned int x) | |
495 | { | |
496 | static char digits[] = "0123456789abcdef"; | |
497 | static char result[9]; | |
498 | int i; | |
499 | ||
500 | result[8] = 0; | |
501 | i = 8; | |
502 | do { | |
503 | --i; | |
504 | result[i] = digits[x & 0xf]; | |
505 | x >>= 4; | |
506 | } while (x != 0 && i > 0); | |
507 | return &result[i]; | |
508 | } | |
509 | ||
510 | static int __init prom_setprop(phandle node, const char *nodename, | |
511 | const char *pname, void *value, size_t valuelen) | |
512 | { | |
513 | char cmd[256], *p; | |
514 | ||
515 | if (!(OF_WORKAROUNDS & OF_WA_LONGTRAIL)) | |
516 | return call_prom("setprop", 4, 1, node, ADDR(pname), | |
517 | (u32)(unsigned long) value, (u32) valuelen); | |
518 | ||
519 | /* gah... setprop doesn't work on longtrail, have to use interpret */ | |
520 | p = cmd; | |
521 | add_string(&p, "dev"); | |
522 | add_string(&p, nodename); | |
523 | add_string(&p, tohex((u32)(unsigned long) value)); | |
524 | add_string(&p, tohex(valuelen)); | |
525 | add_string(&p, tohex(ADDR(pname))); | |
5827d416 | 526 | add_string(&p, tohex(strlen(pname))); |
a23414be PM |
527 | add_string(&p, "property"); |
528 | *p = 0; | |
529 | return call_prom("interpret", 1, 1, (u32)(unsigned long) cmd); | |
9b6b563c PM |
530 | } |
531 | ||
5827d416 | 532 | /* We can't use the standard versions because of relocation headaches. */ |
cf68787b BK |
533 | #define isxdigit(c) (('0' <= (c) && (c) <= '9') \ |
534 | || ('a' <= (c) && (c) <= 'f') \ | |
535 | || ('A' <= (c) && (c) <= 'F')) | |
536 | ||
537 | #define isdigit(c) ('0' <= (c) && (c) <= '9') | |
538 | #define islower(c) ('a' <= (c) && (c) <= 'z') | |
539 | #define toupper(c) (islower(c) ? ((c) - 'a' + 'A') : (c)) | |
540 | ||
493adffc | 541 | static unsigned long prom_strtoul(const char *cp, const char **endp) |
cf68787b BK |
542 | { |
543 | unsigned long result = 0, base = 10, value; | |
544 | ||
545 | if (*cp == '0') { | |
546 | base = 8; | |
547 | cp++; | |
548 | if (toupper(*cp) == 'X') { | |
549 | cp++; | |
550 | base = 16; | |
551 | } | |
552 | } | |
553 | ||
554 | while (isxdigit(*cp) && | |
555 | (value = isdigit(*cp) ? *cp - '0' : toupper(*cp) - 'A' + 10) < base) { | |
556 | result = result * base + value; | |
557 | cp++; | |
558 | } | |
559 | ||
560 | if (endp) | |
561 | *endp = cp; | |
562 | ||
563 | return result; | |
564 | } | |
565 | ||
493adffc | 566 | static unsigned long prom_memparse(const char *ptr, const char **retptr) |
cf68787b BK |
567 | { |
568 | unsigned long ret = prom_strtoul(ptr, retptr); | |
569 | int shift = 0; | |
570 | ||
571 | /* | |
572 | * We can't use a switch here because GCC *may* generate a | |
573 | * jump table which won't work, because we're not running at | |
574 | * the address we're linked at. | |
575 | */ | |
576 | if ('G' == **retptr || 'g' == **retptr) | |
577 | shift = 30; | |
578 | ||
579 | if ('M' == **retptr || 'm' == **retptr) | |
580 | shift = 20; | |
581 | ||
582 | if ('K' == **retptr || 'k' == **retptr) | |
583 | shift = 10; | |
584 | ||
585 | if (shift) { | |
586 | ret <<= shift; | |
587 | (*retptr)++; | |
588 | } | |
589 | ||
590 | return ret; | |
591 | } | |
592 | ||
9b6b563c PM |
593 | /* |
594 | * Early parsing of the command line passed to the kernel, used for | |
595 | * "mem=x" and the options that affect the iommu | |
596 | */ | |
597 | static void __init early_cmdline_parse(void) | |
598 | { | |
cc5d0189 | 599 | const char *opt; |
cf68787b | 600 | |
cc5d0189 | 601 | char *p; |
9b6b563c PM |
602 | int l = 0; |
603 | ||
5827d416 AB |
604 | prom_cmd_line[0] = 0; |
605 | p = prom_cmd_line; | |
606 | if ((long)prom.chosen > 0) | |
607 | l = prom_getprop(prom.chosen, "bootargs", p, COMMAND_LINE_SIZE-1); | |
9b6b563c | 608 | #ifdef CONFIG_CMDLINE |
0e4aa9c2 | 609 | if (l <= 0 || p[0] == '\0') /* dbl check */ |
5827d416 AB |
610 | strlcpy(prom_cmd_line, |
611 | CONFIG_CMDLINE, sizeof(prom_cmd_line)); | |
9b6b563c | 612 | #endif /* CONFIG_CMDLINE */ |
5827d416 | 613 | prom_printf("command line: %s\n", prom_cmd_line); |
9b6b563c PM |
614 | |
615 | #ifdef CONFIG_PPC64 | |
5827d416 | 616 | opt = strstr(prom_cmd_line, "iommu="); |
9b6b563c PM |
617 | if (opt) { |
618 | prom_printf("iommu opt is: %s\n", opt); | |
619 | opt += 6; | |
620 | while (*opt && *opt == ' ') | |
621 | opt++; | |
5827d416 AB |
622 | if (!strncmp(opt, "off", 3)) |
623 | prom_iommu_off = 1; | |
624 | else if (!strncmp(opt, "force", 5)) | |
625 | prom_iommu_force_on = 1; | |
9b6b563c PM |
626 | } |
627 | #endif | |
5827d416 | 628 | opt = strstr(prom_cmd_line, "mem="); |
cf68787b BK |
629 | if (opt) { |
630 | opt += 4; | |
5827d416 | 631 | prom_memory_limit = prom_memparse(opt, (const char **)&opt); |
cf68787b BK |
632 | #ifdef CONFIG_PPC64 |
633 | /* Align to 16 MB == size of ppc64 large page */ | |
5827d416 | 634 | prom_memory_limit = ALIGN(prom_memory_limit, 0x1000000); |
cf68787b BK |
635 | #endif |
636 | } | |
014d02cb SJS |
637 | |
638 | opt = strstr(prom_cmd_line, "disable_radix"); | |
639 | if (opt) { | |
640 | prom_debug("Radix disabled from cmdline\n"); | |
641 | prom_radix_disable = true; | |
642 | } | |
9b6b563c PM |
643 | } |
644 | ||
27f44888 | 645 | #if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV) |
9b6b563c | 646 | /* |
530b5e14 NF |
647 | * The architecture vector has an array of PVR mask/value pairs, |
648 | * followed by # option vectors - 1, followed by the option vectors. | |
649 | * | |
650 | * See prom.h for the definition of the bits specified in the | |
651 | * architecture vector. | |
f709bfac | 652 | */ |
f709bfac | 653 | |
e8a4fd0a ME |
654 | /* Firmware expects the value to be n - 1, where n is the # of vectors */ |
655 | #define NUM_VECTORS(n) ((n) - 1) | |
656 | ||
657 | /* | |
658 | * Firmware expects 1 + n - 2, where n is the length of the option vector in | |
659 | * bytes. The 1 accounts for the length byte itself, the - 2 .. ? | |
660 | */ | |
661 | #define VECTOR_LENGTH(n) (1 + (n) - 2) | |
662 | ||
d03d1d65 ME |
663 | struct option_vector1 { |
664 | u8 byte1; | |
665 | u8 arch_versions; | |
cc3d2940 | 666 | u8 arch_versions3; |
d03d1d65 ME |
667 | } __packed; |
668 | ||
669 | struct option_vector2 { | |
670 | u8 byte1; | |
671 | __be16 reserved; | |
672 | __be32 real_base; | |
673 | __be32 real_size; | |
674 | __be32 virt_base; | |
675 | __be32 virt_size; | |
676 | __be32 load_base; | |
677 | __be32 min_rma; | |
678 | __be32 min_load; | |
679 | u8 min_rma_percent; | |
680 | u8 max_pft_size; | |
681 | } __packed; | |
682 | ||
683 | struct option_vector3 { | |
684 | u8 byte1; | |
685 | u8 byte2; | |
686 | } __packed; | |
687 | ||
688 | struct option_vector4 { | |
689 | u8 byte1; | |
690 | u8 min_vp_cap; | |
691 | } __packed; | |
692 | ||
693 | struct option_vector5 { | |
694 | u8 byte1; | |
695 | u8 byte2; | |
696 | u8 byte3; | |
697 | u8 cmo; | |
698 | u8 associativity; | |
699 | u8 bin_opts; | |
700 | u8 micro_checkpoint; | |
701 | u8 reserved0; | |
702 | __be32 max_cpus; | |
703 | __be16 papr_level; | |
704 | __be16 reserved1; | |
705 | u8 platform_facilities; | |
706 | u8 reserved2; | |
707 | __be16 reserved3; | |
708 | u8 subprocessors; | |
cc3d2940 PM |
709 | u8 byte22; |
710 | u8 intarch; | |
711 | u8 mmu; | |
014d02cb SJS |
712 | u8 hash_ext; |
713 | u8 radix_ext; | |
d03d1d65 ME |
714 | } __packed; |
715 | ||
716 | struct option_vector6 { | |
717 | u8 reserved; | |
718 | u8 secondary_pteg; | |
719 | u8 os_name; | |
720 | } __packed; | |
721 | ||
76ffb578 | 722 | struct ibm_arch_vec { |
cc3d2940 | 723 | struct { u32 mask, val; } pvrs[12]; |
76ffb578 ME |
724 | |
725 | u8 num_vectors; | |
726 | ||
727 | u8 vec1_len; | |
728 | struct option_vector1 vec1; | |
729 | ||
730 | u8 vec2_len; | |
731 | struct option_vector2 vec2; | |
732 | ||
733 | u8 vec3_len; | |
734 | struct option_vector3 vec3; | |
735 | ||
736 | u8 vec4_len; | |
737 | struct option_vector4 vec4; | |
738 | ||
739 | u8 vec5_len; | |
740 | struct option_vector5 vec5; | |
741 | ||
742 | u8 vec6_len; | |
743 | struct option_vector6 vec6; | |
744 | } __packed; | |
745 | ||
746 | struct ibm_arch_vec __cacheline_aligned ibm_architecture_vec = { | |
747 | .pvrs = { | |
748 | { | |
749 | .mask = cpu_to_be32(0xfffe0000), /* POWER5/POWER5+ */ | |
750 | .val = cpu_to_be32(0x003a0000), | |
751 | }, | |
752 | { | |
753 | .mask = cpu_to_be32(0xffff0000), /* POWER6 */ | |
754 | .val = cpu_to_be32(0x003e0000), | |
755 | }, | |
756 | { | |
757 | .mask = cpu_to_be32(0xffff0000), /* POWER7 */ | |
758 | .val = cpu_to_be32(0x003f0000), | |
759 | }, | |
760 | { | |
761 | .mask = cpu_to_be32(0xffff0000), /* POWER8E */ | |
762 | .val = cpu_to_be32(0x004b0000), | |
763 | }, | |
764 | { | |
765 | .mask = cpu_to_be32(0xffff0000), /* POWER8NVL */ | |
766 | .val = cpu_to_be32(0x004c0000), | |
767 | }, | |
768 | { | |
769 | .mask = cpu_to_be32(0xffff0000), /* POWER8 */ | |
770 | .val = cpu_to_be32(0x004d0000), | |
771 | }, | |
cc3d2940 PM |
772 | { |
773 | .mask = cpu_to_be32(0xffff0000), /* POWER9 */ | |
774 | .val = cpu_to_be32(0x004e0000), | |
775 | }, | |
776 | { | |
777 | .mask = cpu_to_be32(0xffffffff), /* all 3.00-compliant */ | |
778 | .val = cpu_to_be32(0x0f000005), | |
779 | }, | |
76ffb578 ME |
780 | { |
781 | .mask = cpu_to_be32(0xffffffff), /* all 2.07-compliant */ | |
782 | .val = cpu_to_be32(0x0f000004), | |
783 | }, | |
784 | { | |
785 | .mask = cpu_to_be32(0xffffffff), /* all 2.06-compliant */ | |
786 | .val = cpu_to_be32(0x0f000003), | |
787 | }, | |
788 | { | |
789 | .mask = cpu_to_be32(0xffffffff), /* all 2.05-compliant */ | |
790 | .val = cpu_to_be32(0x0f000002), | |
791 | }, | |
792 | { | |
793 | .mask = cpu_to_be32(0xfffffffe), /* all 2.04-compliant and earlier */ | |
794 | .val = cpu_to_be32(0x0f000001), | |
795 | }, | |
796 | }, | |
797 | ||
798 | .num_vectors = NUM_VECTORS(6), | |
799 | ||
800 | .vec1_len = VECTOR_LENGTH(sizeof(struct option_vector1)), | |
801 | .vec1 = { | |
802 | .byte1 = 0, | |
803 | .arch_versions = OV1_PPC_2_00 | OV1_PPC_2_01 | OV1_PPC_2_02 | OV1_PPC_2_03 | | |
804 | OV1_PPC_2_04 | OV1_PPC_2_05 | OV1_PPC_2_06 | OV1_PPC_2_07, | |
cc3d2940 | 805 | .arch_versions3 = OV1_PPC_3_00, |
76ffb578 ME |
806 | }, |
807 | ||
808 | .vec2_len = VECTOR_LENGTH(sizeof(struct option_vector2)), | |
809 | /* option vector 2: Open Firmware options supported */ | |
810 | .vec2 = { | |
811 | .byte1 = OV2_REAL_MODE, | |
812 | .reserved = 0, | |
813 | .real_base = cpu_to_be32(0xffffffff), | |
814 | .real_size = cpu_to_be32(0xffffffff), | |
815 | .virt_base = cpu_to_be32(0xffffffff), | |
816 | .virt_size = cpu_to_be32(0xffffffff), | |
817 | .load_base = cpu_to_be32(0xffffffff), | |
818 | .min_rma = cpu_to_be32(256), /* 256MB min RMA */ | |
819 | .min_load = cpu_to_be32(0xffffffff), /* full client load */ | |
820 | .min_rma_percent = 0, /* min RMA percentage of total RAM */ | |
821 | .max_pft_size = 48, /* max log_2(hash table size) */ | |
822 | }, | |
823 | ||
824 | .vec3_len = VECTOR_LENGTH(sizeof(struct option_vector3)), | |
825 | /* option vector 3: processor options supported */ | |
826 | .vec3 = { | |
827 | .byte1 = 0, /* don't ignore, don't halt */ | |
828 | .byte2 = OV3_FP | OV3_VMX | OV3_DFP, | |
829 | }, | |
830 | ||
831 | .vec4_len = VECTOR_LENGTH(sizeof(struct option_vector4)), | |
832 | /* option vector 4: IBM PAPR implementation */ | |
833 | .vec4 = { | |
834 | .byte1 = 0, /* don't halt */ | |
835 | .min_vp_cap = OV4_MIN_ENT_CAP, /* minimum VP entitled capacity */ | |
836 | }, | |
837 | ||
838 | .vec5_len = VECTOR_LENGTH(sizeof(struct option_vector5)), | |
839 | /* option vector 5: PAPR/OF options */ | |
840 | .vec5 = { | |
841 | .byte1 = 0, /* don't ignore, don't halt */ | |
842 | .byte2 = OV5_FEAT(OV5_LPAR) | OV5_FEAT(OV5_SPLPAR) | OV5_FEAT(OV5_LARGE_PAGES) | | |
843 | OV5_FEAT(OV5_DRCONF_MEMORY) | OV5_FEAT(OV5_DONATE_DEDICATE_CPU) | | |
844 | #ifdef CONFIG_PCI_MSI | |
845 | /* PCIe/MSI support. Without MSI full PCIe is not supported */ | |
846 | OV5_FEAT(OV5_MSI), | |
847 | #else | |
848 | 0, | |
849 | #endif | |
850 | .byte3 = 0, | |
851 | .cmo = | |
852 | #ifdef CONFIG_PPC_SMLPAR | |
853 | OV5_FEAT(OV5_CMO) | OV5_FEAT(OV5_XCMO), | |
854 | #else | |
855 | 0, | |
856 | #endif | |
857 | .associativity = OV5_FEAT(OV5_TYPE1_AFFINITY) | OV5_FEAT(OV5_PRRN), | |
3dbbaf20 | 858 | .bin_opts = OV5_FEAT(OV5_RESIZE_HPT) | OV5_FEAT(OV5_HP_EVT), |
76ffb578 ME |
859 | .micro_checkpoint = 0, |
860 | .reserved0 = 0, | |
861 | .max_cpus = cpu_to_be32(NR_CPUS), /* number of cores supported */ | |
862 | .papr_level = 0, | |
863 | .reserved1 = 0, | |
864 | .platform_facilities = OV5_FEAT(OV5_PFO_HW_RNG) | OV5_FEAT(OV5_PFO_HW_ENCR) | OV5_FEAT(OV5_PFO_HW_842), | |
865 | .reserved2 = 0, | |
866 | .reserved3 = 0, | |
867 | .subprocessors = 1, | |
cc3d2940 | 868 | .intarch = 0, |
014d02cb SJS |
869 | .mmu = 0, |
870 | .hash_ext = 0, | |
871 | .radix_ext = 0, | |
76ffb578 ME |
872 | }, |
873 | ||
874 | /* option vector 6: IBM PAPR hints */ | |
875 | .vec6_len = VECTOR_LENGTH(sizeof(struct option_vector6)), | |
876 | .vec6 = { | |
877 | .reserved = 0, | |
878 | .secondary_pteg = 0, | |
879 | .os_name = OV6_LINUX, | |
880 | }, | |
881 | }; | |
882 | ||
493adffc BH |
883 | /* Old method - ELF header with PT_NOTE sections only works on BE */ |
884 | #ifdef __BIG_ENDIAN__ | |
9b6b563c PM |
885 | static struct fake_elf { |
886 | Elf32_Ehdr elfhdr; | |
887 | Elf32_Phdr phdr[2]; | |
888 | struct chrpnote { | |
889 | u32 namesz; | |
890 | u32 descsz; | |
891 | u32 type; | |
892 | char name[8]; /* "PowerPC" */ | |
893 | struct chrpdesc { | |
894 | u32 real_mode; | |
895 | u32 real_base; | |
896 | u32 real_size; | |
897 | u32 virt_base; | |
898 | u32 virt_size; | |
899 | u32 load_base; | |
900 | } chrpdesc; | |
901 | } chrpnote; | |
902 | struct rpanote { | |
903 | u32 namesz; | |
904 | u32 descsz; | |
905 | u32 type; | |
906 | char name[24]; /* "IBM,RPA-Client-Config" */ | |
907 | struct rpadesc { | |
908 | u32 lpar_affinity; | |
909 | u32 min_rmo_size; | |
910 | u32 min_rmo_percent; | |
911 | u32 max_pft_size; | |
912 | u32 splpar; | |
913 | u32 min_load; | |
914 | u32 new_mem_def; | |
915 | u32 ignore_me; | |
916 | } rpadesc; | |
917 | } rpanote; | |
5663a123 | 918 | } fake_elf = { |
9b6b563c PM |
919 | .elfhdr = { |
920 | .e_ident = { 0x7f, 'E', 'L', 'F', | |
921 | ELFCLASS32, ELFDATA2MSB, EV_CURRENT }, | |
922 | .e_type = ET_EXEC, /* yeah right */ | |
923 | .e_machine = EM_PPC, | |
924 | .e_version = EV_CURRENT, | |
925 | .e_phoff = offsetof(struct fake_elf, phdr), | |
926 | .e_phentsize = sizeof(Elf32_Phdr), | |
927 | .e_phnum = 2 | |
928 | }, | |
929 | .phdr = { | |
930 | [0] = { | |
931 | .p_type = PT_NOTE, | |
932 | .p_offset = offsetof(struct fake_elf, chrpnote), | |
933 | .p_filesz = sizeof(struct chrpnote) | |
934 | }, [1] = { | |
935 | .p_type = PT_NOTE, | |
936 | .p_offset = offsetof(struct fake_elf, rpanote), | |
937 | .p_filesz = sizeof(struct rpanote) | |
938 | } | |
939 | }, | |
940 | .chrpnote = { | |
941 | .namesz = sizeof("PowerPC"), | |
942 | .descsz = sizeof(struct chrpdesc), | |
943 | .type = 0x1275, | |
944 | .name = "PowerPC", | |
945 | .chrpdesc = { | |
946 | .real_mode = ~0U, /* ~0 means "don't care" */ | |
947 | .real_base = ~0U, | |
948 | .real_size = ~0U, | |
949 | .virt_base = ~0U, | |
950 | .virt_size = ~0U, | |
951 | .load_base = ~0U | |
952 | }, | |
953 | }, | |
954 | .rpanote = { | |
955 | .namesz = sizeof("IBM,RPA-Client-Config"), | |
956 | .descsz = sizeof(struct rpadesc), | |
957 | .type = 0x12759999, | |
958 | .name = "IBM,RPA-Client-Config", | |
959 | .rpadesc = { | |
5663a123 PM |
960 | .lpar_affinity = 0, |
961 | .min_rmo_size = 64, /* in megabytes */ | |
9b6b563c | 962 | .min_rmo_percent = 0, |
5663a123 | 963 | .max_pft_size = 48, /* 2^48 bytes max PFT size */ |
9b6b563c PM |
964 | .splpar = 1, |
965 | .min_load = ~0U, | |
5663a123 | 966 | .new_mem_def = 0 |
9b6b563c PM |
967 | } |
968 | } | |
969 | }; | |
493adffc | 970 | #endif /* __BIG_ENDIAN__ */ |
9b6b563c | 971 | |
efec959f BH |
972 | static int __init prom_count_smt_threads(void) |
973 | { | |
974 | phandle node; | |
975 | char type[64]; | |
976 | unsigned int plen; | |
977 | ||
978 | /* Pick up th first CPU node we can find */ | |
979 | for (node = 0; prom_next_node(&node); ) { | |
980 | type[0] = 0; | |
981 | prom_getprop(node, "device_type", type, sizeof(type)); | |
982 | ||
5827d416 | 983 | if (strcmp(type, "cpu")) |
efec959f BH |
984 | continue; |
985 | /* | |
986 | * There is an entry for each smt thread, each entry being | |
987 | * 4 bytes long. All cpus should have the same number of | |
988 | * smt threads, so return after finding the first. | |
989 | */ | |
990 | plen = prom_getproplen(node, "ibm,ppc-interrupt-server#s"); | |
991 | if (plen == PROM_ERROR) | |
992 | break; | |
993 | plen >>= 2; | |
2c48a7d6 | 994 | prom_debug("Found %lu smt threads per core\n", (unsigned long)plen); |
efec959f BH |
995 | |
996 | /* Sanity check */ | |
997 | if (plen < 1 || plen > 64) { | |
2c48a7d6 | 998 | prom_printf("Threads per core %lu out of bounds, assuming 1\n", |
efec959f BH |
999 | (unsigned long)plen); |
1000 | return 1; | |
1001 | } | |
1002 | return plen; | |
1003 | } | |
1004 | prom_debug("No threads found, assuming 1 per core\n"); | |
1005 | ||
1006 | return 1; | |
1007 | ||
1008 | } | |
1009 | ||
014d02cb SJS |
1010 | static void __init prom_parse_mmu_model(u8 val, |
1011 | struct platform_support *support) | |
1012 | { | |
1013 | switch (val) { | |
1014 | case OV5_FEAT(OV5_MMU_DYNAMIC): | |
1015 | case OV5_FEAT(OV5_MMU_EITHER): /* Either Available */ | |
1016 | prom_debug("MMU - either supported\n"); | |
1017 | support->radix_mmu = !prom_radix_disable; | |
1018 | support->hash_mmu = true; | |
1019 | break; | |
1020 | case OV5_FEAT(OV5_MMU_RADIX): /* Only Radix */ | |
1021 | prom_debug("MMU - radix only\n"); | |
1022 | if (prom_radix_disable) { | |
1023 | /* | |
1024 | * If we __have__ to do radix, we're better off ignoring | |
1025 | * the command line rather than not booting. | |
1026 | */ | |
1027 | prom_printf("WARNING: Ignoring cmdline option disable_radix\n"); | |
1028 | } | |
1029 | support->radix_mmu = true; | |
1030 | break; | |
1031 | case OV5_FEAT(OV5_MMU_HASH): | |
1032 | prom_debug("MMU - hash only\n"); | |
1033 | support->hash_mmu = true; | |
1034 | break; | |
1035 | default: | |
1036 | prom_debug("Unknown mmu support option: 0x%x\n", val); | |
1037 | break; | |
1038 | } | |
1039 | } | |
1040 | ||
1041 | static void __init prom_parse_platform_support(u8 index, u8 val, | |
1042 | struct platform_support *support) | |
1043 | { | |
1044 | switch (index) { | |
1045 | case OV5_INDX(OV5_MMU_SUPPORT): /* MMU Model */ | |
1046 | prom_parse_mmu_model(val & OV5_FEAT(OV5_MMU_SUPPORT), support); | |
1047 | break; | |
1048 | case OV5_INDX(OV5_RADIX_GTSE): /* Radix Extensions */ | |
1049 | if (val & OV5_FEAT(OV5_RADIX_GTSE)) { | |
1050 | prom_debug("Radix - GTSE supported\n"); | |
1051 | support->radix_gtse = true; | |
1052 | } | |
1053 | break; | |
1054 | } | |
1055 | } | |
1056 | ||
1057 | static void __init prom_check_platform_support(void) | |
1058 | { | |
1059 | struct platform_support supported = { | |
1060 | .hash_mmu = false, | |
1061 | .radix_mmu = false, | |
1062 | .radix_gtse = false | |
1063 | }; | |
1064 | int prop_len = prom_getproplen(prom.chosen, | |
1065 | "ibm,arch-vec-5-platform-support"); | |
1066 | if (prop_len > 1) { | |
1067 | int i; | |
1068 | u8 vec[prop_len]; | |
1069 | prom_debug("Found ibm,arch-vec-5-platform-support, len: %d\n", | |
1070 | prop_len); | |
1071 | prom_getprop(prom.chosen, "ibm,arch-vec-5-platform-support", | |
1072 | &vec, sizeof(vec)); | |
1073 | for (i = 0; i < prop_len; i += 2) { | |
1074 | prom_debug("%d: index = 0x%x val = 0x%x\n", i / 2 | |
1075 | , vec[i] | |
1076 | , vec[i + 1]); | |
1077 | prom_parse_platform_support(vec[i], vec[i + 1], | |
1078 | &supported); | |
1079 | } | |
1080 | } | |
1081 | ||
1082 | if (supported.radix_mmu && supported.radix_gtse) { | |
1083 | /* Radix preferred - but we require GTSE for now */ | |
1084 | prom_debug("Asking for radix with GTSE\n"); | |
1085 | ibm_architecture_vec.vec5.mmu = OV5_FEAT(OV5_MMU_RADIX); | |
1086 | ibm_architecture_vec.vec5.radix_ext = OV5_FEAT(OV5_RADIX_GTSE); | |
1087 | } else if (supported.hash_mmu) { | |
1088 | /* Default to hash mmu (if we can) */ | |
1089 | prom_debug("Asking for hash\n"); | |
1090 | ibm_architecture_vec.vec5.mmu = OV5_FEAT(OV5_MMU_HASH); | |
1091 | } else { | |
1092 | /* We're probably on a legacy hypervisor */ | |
1093 | prom_debug("Assuming legacy hash support\n"); | |
1094 | } | |
1095 | } | |
efec959f | 1096 | |
9b6b563c PM |
1097 | static void __init prom_send_capabilities(void) |
1098 | { | |
493adffc | 1099 | ihandle root; |
f709bfac | 1100 | prom_arg_t ret; |
dbd0c5d5 | 1101 | u32 cores; |
f709bfac | 1102 | |
014d02cb SJS |
1103 | /* Check ibm,arch-vec-5-platform-support and fixup vec5 if required */ |
1104 | prom_check_platform_support(); | |
1105 | ||
f709bfac PM |
1106 | root = call_prom("open", 1, 1, ADDR("/")); |
1107 | if (root != 0) { | |
efec959f BH |
1108 | /* We need to tell the FW about the number of cores we support. |
1109 | * | |
1110 | * To do that, we count the number of threads on the first core | |
1111 | * (we assume this is the same for all cores) and use it to | |
1112 | * divide NR_CPUS. | |
1113 | */ | |
dbd0c5d5 | 1114 | |
76ffb578 ME |
1115 | cores = DIV_ROUND_UP(NR_CPUS, prom_count_smt_threads()); |
1116 | prom_printf("Max number of cores passed to firmware: %lu (NR_CPUS = %lu)\n", | |
1117 | cores, NR_CPUS); | |
1118 | ||
1119 | ibm_architecture_vec.vec5.max_cpus = cpu_to_be32(cores); | |
efec959f | 1120 | |
f709bfac | 1121 | /* try calling the ibm,client-architecture-support method */ |
049d0497 | 1122 | prom_printf("Calling ibm,client-architecture-support..."); |
f709bfac PM |
1123 | if (call_prom_ret("call-method", 3, 2, &ret, |
1124 | ADDR("ibm,client-architecture-support"), | |
33b74977 | 1125 | root, |
76ffb578 | 1126 | ADDR(&ibm_architecture_vec)) == 0) { |
f709bfac PM |
1127 | /* the call exists... */ |
1128 | if (ret) | |
4da727ae | 1129 | prom_printf("\nWARNING: ibm,client-architecture" |
f709bfac PM |
1130 | "-support call FAILED!\n"); |
1131 | call_prom("close", 1, 0, root); | |
4da727ae | 1132 | prom_printf(" done\n"); |
f709bfac PM |
1133 | return; |
1134 | } | |
1135 | call_prom("close", 1, 0, root); | |
049d0497 | 1136 | prom_printf(" not implemented\n"); |
f709bfac | 1137 | } |
9b6b563c | 1138 | |
493adffc BH |
1139 | #ifdef __BIG_ENDIAN__ |
1140 | { | |
1141 | ihandle elfloader; | |
1142 | ||
1143 | /* no ibm,client-architecture-support call, try the old way */ | |
1144 | elfloader = call_prom("open", 1, 1, | |
1145 | ADDR("/packages/elf-loader")); | |
1146 | if (elfloader == 0) { | |
1147 | prom_printf("couldn't open /packages/elf-loader\n"); | |
1148 | return; | |
1149 | } | |
1150 | call_prom("call-method", 3, 1, ADDR("process-elf-header"), | |
1151 | elfloader, ADDR(&fake_elf)); | |
1152 | call_prom("close", 1, 0, elfloader); | |
9b6b563c | 1153 | } |
493adffc | 1154 | #endif /* __BIG_ENDIAN__ */ |
9b6b563c | 1155 | } |
493adffc | 1156 | #endif /* #if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV) */ |
9b6b563c PM |
1157 | |
1158 | /* | |
1159 | * Memory allocation strategy... our layout is normally: | |
1160 | * | |
1161 | * at 14Mb or more we have vmlinux, then a gap and initrd. In some | |
1162 | * rare cases, initrd might end up being before the kernel though. | |
1163 | * We assume this won't override the final kernel at 0, we have no | |
1164 | * provision to handle that in this version, but it should hopefully | |
1165 | * never happen. | |
1166 | * | |
1167 | * alloc_top is set to the top of RMO, eventually shrink down if the | |
1168 | * TCEs overlap | |
1169 | * | |
1170 | * alloc_bottom is set to the top of kernel/initrd | |
1171 | * | |
1172 | * from there, allocations are done this way : rtas is allocated | |
1173 | * topmost, and the device-tree is allocated from the bottom. We try | |
1174 | * to grow the device-tree allocation as we progress. If we can't, | |
1175 | * then we fail, we don't currently have a facility to restart | |
1176 | * elsewhere, but that shouldn't be necessary. | |
1177 | * | |
1178 | * Note that calls to reserve_mem have to be done explicitly, memory | |
1179 | * allocated with either alloc_up or alloc_down isn't automatically | |
1180 | * reserved. | |
1181 | */ | |
1182 | ||
1183 | ||
1184 | /* | |
1185 | * Allocates memory in the RMO upward from the kernel/initrd | |
1186 | * | |
1187 | * When align is 0, this is a special case, it means to allocate in place | |
1188 | * at the current location of alloc_bottom or fail (that is basically | |
1189 | * extending the previous allocation). Used for the device-tree flattening | |
1190 | */ | |
1191 | static unsigned long __init alloc_up(unsigned long size, unsigned long align) | |
1192 | { | |
5827d416 | 1193 | unsigned long base = alloc_bottom; |
9b6b563c PM |
1194 | unsigned long addr = 0; |
1195 | ||
c4988820 PM |
1196 | if (align) |
1197 | base = _ALIGN_UP(base, align); | |
9b6b563c | 1198 | prom_debug("alloc_up(%x, %x)\n", size, align); |
5827d416 | 1199 | if (ram_top == 0) |
9b6b563c PM |
1200 | prom_panic("alloc_up() called with mem not initialized\n"); |
1201 | ||
1202 | if (align) | |
5827d416 | 1203 | base = _ALIGN_UP(alloc_bottom, align); |
9b6b563c | 1204 | else |
5827d416 | 1205 | base = alloc_bottom; |
9b6b563c | 1206 | |
5827d416 | 1207 | for(; (base + size) <= alloc_top; |
9b6b563c PM |
1208 | base = _ALIGN_UP(base + 0x100000, align)) { |
1209 | prom_debug(" trying: 0x%x\n\r", base); | |
1210 | addr = (unsigned long)prom_claim(base, size, 0); | |
c4988820 | 1211 | if (addr != PROM_ERROR && addr != 0) |
9b6b563c PM |
1212 | break; |
1213 | addr = 0; | |
1214 | if (align == 0) | |
1215 | break; | |
1216 | } | |
1217 | if (addr == 0) | |
1218 | return 0; | |
5827d416 | 1219 | alloc_bottom = addr + size; |
9b6b563c PM |
1220 | |
1221 | prom_debug(" -> %x\n", addr); | |
5827d416 AB |
1222 | prom_debug(" alloc_bottom : %x\n", alloc_bottom); |
1223 | prom_debug(" alloc_top : %x\n", alloc_top); | |
1224 | prom_debug(" alloc_top_hi : %x\n", alloc_top_high); | |
1225 | prom_debug(" rmo_top : %x\n", rmo_top); | |
1226 | prom_debug(" ram_top : %x\n", ram_top); | |
9b6b563c PM |
1227 | |
1228 | return addr; | |
1229 | } | |
1230 | ||
1231 | /* | |
1232 | * Allocates memory downward, either from top of RMO, or if highmem | |
1233 | * is set, from the top of RAM. Note that this one doesn't handle | |
1234 | * failures. It does claim memory if highmem is not set. | |
1235 | */ | |
1236 | static unsigned long __init alloc_down(unsigned long size, unsigned long align, | |
1237 | int highmem) | |
1238 | { | |
1239 | unsigned long base, addr = 0; | |
1240 | ||
1241 | prom_debug("alloc_down(%x, %x, %s)\n", size, align, | |
5827d416 AB |
1242 | highmem ? "(high)" : "(low)"); |
1243 | if (ram_top == 0) | |
9b6b563c PM |
1244 | prom_panic("alloc_down() called with mem not initialized\n"); |
1245 | ||
1246 | if (highmem) { | |
1247 | /* Carve out storage for the TCE table. */ | |
5827d416 AB |
1248 | addr = _ALIGN_DOWN(alloc_top_high - size, align); |
1249 | if (addr <= alloc_bottom) | |
9b6b563c PM |
1250 | return 0; |
1251 | /* Will we bump into the RMO ? If yes, check out that we | |
1252 | * didn't overlap existing allocations there, if we did, | |
1253 | * we are dead, we must be the first in town ! | |
1254 | */ | |
5827d416 | 1255 | if (addr < rmo_top) { |
9b6b563c | 1256 | /* Good, we are first */ |
5827d416 AB |
1257 | if (alloc_top == rmo_top) |
1258 | alloc_top = rmo_top = addr; | |
9b6b563c PM |
1259 | else |
1260 | return 0; | |
1261 | } | |
5827d416 | 1262 | alloc_top_high = addr; |
9b6b563c PM |
1263 | goto bail; |
1264 | } | |
1265 | ||
5827d416 AB |
1266 | base = _ALIGN_DOWN(alloc_top - size, align); |
1267 | for (; base > alloc_bottom; | |
9b6b563c PM |
1268 | base = _ALIGN_DOWN(base - 0x100000, align)) { |
1269 | prom_debug(" trying: 0x%x\n\r", base); | |
1270 | addr = (unsigned long)prom_claim(base, size, 0); | |
c4988820 | 1271 | if (addr != PROM_ERROR && addr != 0) |
9b6b563c PM |
1272 | break; |
1273 | addr = 0; | |
1274 | } | |
1275 | if (addr == 0) | |
1276 | return 0; | |
5827d416 | 1277 | alloc_top = addr; |
9b6b563c PM |
1278 | |
1279 | bail: | |
1280 | prom_debug(" -> %x\n", addr); | |
5827d416 AB |
1281 | prom_debug(" alloc_bottom : %x\n", alloc_bottom); |
1282 | prom_debug(" alloc_top : %x\n", alloc_top); | |
1283 | prom_debug(" alloc_top_hi : %x\n", alloc_top_high); | |
1284 | prom_debug(" rmo_top : %x\n", rmo_top); | |
1285 | prom_debug(" ram_top : %x\n", ram_top); | |
9b6b563c PM |
1286 | |
1287 | return addr; | |
1288 | } | |
1289 | ||
1290 | /* | |
1291 | * Parse a "reg" cell | |
1292 | */ | |
1293 | static unsigned long __init prom_next_cell(int s, cell_t **cellp) | |
1294 | { | |
1295 | cell_t *p = *cellp; | |
1296 | unsigned long r = 0; | |
1297 | ||
1298 | /* Ignore more than 2 cells */ | |
1299 | while (s > sizeof(unsigned long) / 4) { | |
1300 | p++; | |
1301 | s--; | |
1302 | } | |
493adffc | 1303 | r = be32_to_cpu(*p++); |
9b6b563c | 1304 | #ifdef CONFIG_PPC64 |
35499c01 | 1305 | if (s > 1) { |
9b6b563c | 1306 | r <<= 32; |
493adffc | 1307 | r |= be32_to_cpu(*(p++)); |
9b6b563c PM |
1308 | } |
1309 | #endif | |
1310 | *cellp = p; | |
1311 | return r; | |
1312 | } | |
1313 | ||
1314 | /* | |
1315 | * Very dumb function for adding to the memory reserve list, but | |
1316 | * we don't need anything smarter at this point | |
1317 | * | |
1318 | * XXX Eventually check for collisions. They should NEVER happen. | |
1319 | * If problems seem to show up, it would be a good start to track | |
1320 | * them down. | |
1321 | */ | |
0108d3fe | 1322 | static void __init reserve_mem(u64 base, u64 size) |
9b6b563c | 1323 | { |
cbbcf340 | 1324 | u64 top = base + size; |
5827d416 | 1325 | unsigned long cnt = mem_reserve_cnt; |
9b6b563c PM |
1326 | |
1327 | if (size == 0) | |
1328 | return; | |
1329 | ||
1330 | /* We need to always keep one empty entry so that we | |
1331 | * have our terminator with "size" set to 0 since we are | |
1332 | * dumb and just copy this entire array to the boot params | |
1333 | */ | |
1334 | base = _ALIGN_DOWN(base, PAGE_SIZE); | |
1335 | top = _ALIGN_UP(top, PAGE_SIZE); | |
1336 | size = top - base; | |
1337 | ||
1338 | if (cnt >= (MEM_RESERVE_MAP_SIZE - 1)) | |
1339 | prom_panic("Memory reserve map exhausted !\n"); | |
493adffc BH |
1340 | mem_reserve_map[cnt].base = cpu_to_be64(base); |
1341 | mem_reserve_map[cnt].size = cpu_to_be64(size); | |
5827d416 | 1342 | mem_reserve_cnt = cnt + 1; |
9b6b563c PM |
1343 | } |
1344 | ||
1345 | /* | |
b3c2ffd5 | 1346 | * Initialize memory allocation mechanism, parse "memory" nodes and |
9b6b563c PM |
1347 | * obtain that way the top of memory and RMO to setup out local allocator |
1348 | */ | |
1349 | static void __init prom_init_mem(void) | |
1350 | { | |
1351 | phandle node; | |
1352 | char *path, type[64]; | |
1353 | unsigned int plen; | |
1354 | cell_t *p, *endp; | |
493adffc | 1355 | __be32 val; |
9b6b563c PM |
1356 | u32 rac, rsc; |
1357 | ||
1358 | /* | |
1359 | * We iterate the memory nodes to find | |
1360 | * 1) top of RMO (first node) | |
1361 | * 2) top of memory | |
1362 | */ | |
493adffc BH |
1363 | val = cpu_to_be32(2); |
1364 | prom_getprop(prom.root, "#address-cells", &val, sizeof(val)); | |
1365 | rac = be32_to_cpu(val); | |
1366 | val = cpu_to_be32(1); | |
1367 | prom_getprop(prom.root, "#size-cells", &val, sizeof(rsc)); | |
1368 | rsc = be32_to_cpu(val); | |
1369 | prom_debug("root_addr_cells: %x\n", rac); | |
1370 | prom_debug("root_size_cells: %x\n", rsc); | |
9b6b563c PM |
1371 | |
1372 | prom_debug("scanning memory:\n"); | |
5827d416 | 1373 | path = prom_scratch; |
9b6b563c PM |
1374 | |
1375 | for (node = 0; prom_next_node(&node); ) { | |
1376 | type[0] = 0; | |
1377 | prom_getprop(node, "device_type", type, sizeof(type)); | |
1378 | ||
c4988820 PM |
1379 | if (type[0] == 0) { |
1380 | /* | |
1381 | * CHRP Longtrail machines have no device_type | |
1382 | * on the memory node, so check the name instead... | |
1383 | */ | |
1384 | prom_getprop(node, "name", type, sizeof(type)); | |
1385 | } | |
5827d416 | 1386 | if (strcmp(type, "memory")) |
9b6b563c | 1387 | continue; |
c4988820 | 1388 | |
5827d416 | 1389 | plen = prom_getprop(node, "reg", regbuf, sizeof(regbuf)); |
9b6b563c PM |
1390 | if (plen > sizeof(regbuf)) { |
1391 | prom_printf("memory node too large for buffer !\n"); | |
1392 | plen = sizeof(regbuf); | |
1393 | } | |
5827d416 | 1394 | p = regbuf; |
9b6b563c PM |
1395 | endp = p + (plen / sizeof(cell_t)); |
1396 | ||
1397 | #ifdef DEBUG_PROM | |
1398 | memset(path, 0, PROM_SCRATCH_SIZE); | |
1399 | call_prom("package-to-path", 3, 1, node, path, PROM_SCRATCH_SIZE-1); | |
1400 | prom_debug(" node %s :\n", path); | |
1401 | #endif /* DEBUG_PROM */ | |
1402 | ||
1403 | while ((endp - p) >= (rac + rsc)) { | |
1404 | unsigned long base, size; | |
1405 | ||
1406 | base = prom_next_cell(rac, &p); | |
1407 | size = prom_next_cell(rsc, &p); | |
1408 | ||
1409 | if (size == 0) | |
1410 | continue; | |
1411 | prom_debug(" %x %x\n", base, size); | |
5827d416 AB |
1412 | if (base == 0 && (of_platform & PLATFORM_LPAR)) |
1413 | rmo_top = size; | |
1414 | if ((base + size) > ram_top) | |
1415 | ram_top = base + size; | |
9b6b563c PM |
1416 | } |
1417 | } | |
1418 | ||
5827d416 | 1419 | alloc_bottom = PAGE_ALIGN((unsigned long)&_end + 0x4000); |
9b6b563c | 1420 | |
cf68787b BK |
1421 | /* |
1422 | * If prom_memory_limit is set we reduce the upper limits *except* for | |
1423 | * alloc_top_high. This must be the real top of RAM so we can put | |
1424 | * TCE's up there. | |
1425 | */ | |
1426 | ||
5827d416 | 1427 | alloc_top_high = ram_top; |
cf68787b | 1428 | |
5827d416 AB |
1429 | if (prom_memory_limit) { |
1430 | if (prom_memory_limit <= alloc_bottom) { | |
cf68787b | 1431 | prom_printf("Ignoring mem=%x <= alloc_bottom.\n", |
5827d416 AB |
1432 | prom_memory_limit); |
1433 | prom_memory_limit = 0; | |
1434 | } else if (prom_memory_limit >= ram_top) { | |
cf68787b | 1435 | prom_printf("Ignoring mem=%x >= ram_top.\n", |
5827d416 AB |
1436 | prom_memory_limit); |
1437 | prom_memory_limit = 0; | |
cf68787b | 1438 | } else { |
5827d416 AB |
1439 | ram_top = prom_memory_limit; |
1440 | rmo_top = min(rmo_top, prom_memory_limit); | |
cf68787b BK |
1441 | } |
1442 | } | |
1443 | ||
9b6b563c PM |
1444 | /* |
1445 | * Setup our top alloc point, that is top of RMO or top of | |
1446 | * segment 0 when running non-LPAR. | |
1447 | * Some RS64 machines have buggy firmware where claims up at | |
1448 | * 1GB fail. Cap at 768MB as a workaround. | |
1449 | * Since 768MB is plenty of room, and we need to cap to something | |
1450 | * reasonable on 32-bit, cap at 768MB on all machines. | |
1451 | */ | |
5827d416 AB |
1452 | if (!rmo_top) |
1453 | rmo_top = ram_top; | |
1454 | rmo_top = min(0x30000000ul, rmo_top); | |
1455 | alloc_top = rmo_top; | |
1456 | alloc_top_high = ram_top; | |
9b6b563c | 1457 | |
64968f60 PM |
1458 | /* |
1459 | * Check if we have an initrd after the kernel but still inside | |
1460 | * the RMO. If we do move our bottom point to after it. | |
1461 | */ | |
5827d416 AB |
1462 | if (prom_initrd_start && |
1463 | prom_initrd_start < rmo_top && | |
1464 | prom_initrd_end > alloc_bottom) | |
1465 | alloc_bottom = PAGE_ALIGN(prom_initrd_end); | |
64968f60 | 1466 | |
9b6b563c | 1467 | prom_printf("memory layout at init:\n"); |
5827d416 AB |
1468 | prom_printf(" memory_limit : %x (16 MB aligned)\n", prom_memory_limit); |
1469 | prom_printf(" alloc_bottom : %x\n", alloc_bottom); | |
1470 | prom_printf(" alloc_top : %x\n", alloc_top); | |
1471 | prom_printf(" alloc_top_hi : %x\n", alloc_top_high); | |
1472 | prom_printf(" rmo_top : %x\n", rmo_top); | |
1473 | prom_printf(" ram_top : %x\n", ram_top); | |
9b6b563c PM |
1474 | } |
1475 | ||
27f44888 BH |
1476 | static void __init prom_close_stdin(void) |
1477 | { | |
493adffc BH |
1478 | __be32 val; |
1479 | ihandle stdin; | |
27f44888 | 1480 | |
493adffc BH |
1481 | if (prom_getprop(prom.chosen, "stdin", &val, sizeof(val)) > 0) { |
1482 | stdin = be32_to_cpu(val); | |
1483 | call_prom("close", 1, 0, stdin); | |
1484 | } | |
27f44888 BH |
1485 | } |
1486 | ||
1487 | #ifdef CONFIG_PPC_POWERNV | |
1488 | ||
6e35d5da BH |
1489 | #ifdef CONFIG_PPC_EARLY_DEBUG_OPAL |
1490 | static u64 __initdata prom_opal_base; | |
1491 | static u64 __initdata prom_opal_entry; | |
1492 | #endif | |
1493 | ||
6e35d5da BH |
1494 | /* |
1495 | * Allocate room for and instantiate OPAL | |
1496 | */ | |
1497 | static void __init prom_instantiate_opal(void) | |
1498 | { | |
1499 | phandle opal_node; | |
1500 | ihandle opal_inst; | |
1501 | u64 base, entry; | |
1502 | u64 size = 0, align = 0x10000; | |
493adffc | 1503 | __be64 val64; |
6e35d5da BH |
1504 | u32 rets[2]; |
1505 | ||
1506 | prom_debug("prom_instantiate_opal: start...\n"); | |
1507 | ||
1508 | opal_node = call_prom("finddevice", 1, 1, ADDR("/ibm,opal")); | |
1509 | prom_debug("opal_node: %x\n", opal_node); | |
1510 | if (!PHANDLE_VALID(opal_node)) | |
1511 | return; | |
1512 | ||
493adffc BH |
1513 | val64 = 0; |
1514 | prom_getprop(opal_node, "opal-runtime-size", &val64, sizeof(val64)); | |
1515 | size = be64_to_cpu(val64); | |
6e35d5da BH |
1516 | if (size == 0) |
1517 | return; | |
493adffc BH |
1518 | val64 = 0; |
1519 | prom_getprop(opal_node, "opal-runtime-alignment", &val64,sizeof(val64)); | |
1520 | align = be64_to_cpu(val64); | |
6e35d5da BH |
1521 | |
1522 | base = alloc_down(size, align, 0); | |
1523 | if (base == 0) { | |
1524 | prom_printf("OPAL allocation failed !\n"); | |
1525 | return; | |
1526 | } | |
1527 | ||
1528 | opal_inst = call_prom("open", 1, 1, ADDR("/ibm,opal")); | |
1529 | if (!IHANDLE_VALID(opal_inst)) { | |
1530 | prom_printf("opening opal package failed (%x)\n", opal_inst); | |
1531 | return; | |
1532 | } | |
1533 | ||
1534 | prom_printf("instantiating opal at 0x%x...", base); | |
1535 | ||
1536 | if (call_prom_ret("call-method", 4, 3, rets, | |
1537 | ADDR("load-opal-runtime"), | |
1538 | opal_inst, | |
1539 | base >> 32, base & 0xffffffff) != 0 | |
1540 | || (rets[0] == 0 && rets[1] == 0)) { | |
1541 | prom_printf(" failed\n"); | |
1542 | return; | |
1543 | } | |
1544 | entry = (((u64)rets[0]) << 32) | rets[1]; | |
1545 | ||
1546 | prom_printf(" done\n"); | |
1547 | ||
1548 | reserve_mem(base, size); | |
1549 | ||
1550 | prom_debug("opal base = 0x%x\n", base); | |
1551 | prom_debug("opal align = 0x%x\n", align); | |
1552 | prom_debug("opal entry = 0x%x\n", entry); | |
1553 | prom_debug("opal size = 0x%x\n", (long)size); | |
1554 | ||
1555 | prom_setprop(opal_node, "/ibm,opal", "opal-base-address", | |
1556 | &base, sizeof(base)); | |
1557 | prom_setprop(opal_node, "/ibm,opal", "opal-entry-address", | |
1558 | &entry, sizeof(entry)); | |
1559 | ||
1560 | #ifdef CONFIG_PPC_EARLY_DEBUG_OPAL | |
5827d416 AB |
1561 | prom_opal_base = base; |
1562 | prom_opal_entry = entry; | |
6e35d5da BH |
1563 | #endif |
1564 | prom_debug("prom_instantiate_opal: end...\n"); | |
1565 | } | |
1566 | ||
27f44888 | 1567 | #endif /* CONFIG_PPC_POWERNV */ |
9b6b563c PM |
1568 | |
1569 | /* | |
1570 | * Allocate room for and instantiate RTAS | |
1571 | */ | |
1572 | static void __init prom_instantiate_rtas(void) | |
1573 | { | |
1574 | phandle rtas_node; | |
1575 | ihandle rtas_inst; | |
1576 | u32 base, entry = 0; | |
493adffc | 1577 | __be32 val; |
9b6b563c PM |
1578 | u32 size = 0; |
1579 | ||
1580 | prom_debug("prom_instantiate_rtas: start...\n"); | |
1581 | ||
1582 | rtas_node = call_prom("finddevice", 1, 1, ADDR("/rtas")); | |
1583 | prom_debug("rtas_node: %x\n", rtas_node); | |
1584 | if (!PHANDLE_VALID(rtas_node)) | |
1585 | return; | |
1586 | ||
493adffc BH |
1587 | val = 0; |
1588 | prom_getprop(rtas_node, "rtas-size", &val, sizeof(size)); | |
1589 | size = be32_to_cpu(val); | |
9b6b563c PM |
1590 | if (size == 0) |
1591 | return; | |
1592 | ||
1593 | base = alloc_down(size, PAGE_SIZE, 0); | |
6d1e2c6c AB |
1594 | if (base == 0) |
1595 | prom_panic("Could not allocate memory for RTAS\n"); | |
9b6b563c PM |
1596 | |
1597 | rtas_inst = call_prom("open", 1, 1, ADDR("/rtas")); | |
1598 | if (!IHANDLE_VALID(rtas_inst)) { | |
a23414be | 1599 | prom_printf("opening rtas package failed (%x)\n", rtas_inst); |
9b6b563c PM |
1600 | return; |
1601 | } | |
1602 | ||
1f8737aa | 1603 | prom_printf("instantiating rtas at 0x%x...", base); |
9b6b563c PM |
1604 | |
1605 | if (call_prom_ret("call-method", 3, 2, &entry, | |
1606 | ADDR("instantiate-rtas"), | |
a23414be | 1607 | rtas_inst, base) != 0 |
9b6b563c PM |
1608 | || entry == 0) { |
1609 | prom_printf(" failed\n"); | |
1610 | return; | |
1611 | } | |
1612 | prom_printf(" done\n"); | |
1613 | ||
1614 | reserve_mem(base, size); | |
1615 | ||
493adffc | 1616 | val = cpu_to_be32(base); |
a23414be | 1617 | prom_setprop(rtas_node, "/rtas", "linux,rtas-base", |
493adffc BH |
1618 | &val, sizeof(val)); |
1619 | val = cpu_to_be32(entry); | |
a23414be | 1620 | prom_setprop(rtas_node, "/rtas", "linux,rtas-entry", |
493adffc | 1621 | &val, sizeof(val)); |
9b6b563c | 1622 | |
dbe78b40 BH |
1623 | /* Check if it supports "query-cpu-stopped-state" */ |
1624 | if (prom_getprop(rtas_node, "query-cpu-stopped-state", | |
1625 | &val, sizeof(val)) != PROM_ERROR) | |
1626 | rtas_has_query_cpu_stopped = true; | |
1627 | ||
9b6b563c PM |
1628 | prom_debug("rtas base = 0x%x\n", base); |
1629 | prom_debug("rtas entry = 0x%x\n", entry); | |
1630 | prom_debug("rtas size = 0x%x\n", (long)size); | |
1631 | ||
1632 | prom_debug("prom_instantiate_rtas: end...\n"); | |
1633 | } | |
1634 | ||
1635 | #ifdef CONFIG_PPC64 | |
4a727429 AL |
1636 | /* |
1637 | * Allocate room for and instantiate Stored Measurement Log (SML) | |
1638 | */ | |
1639 | static void __init prom_instantiate_sml(void) | |
1640 | { | |
1641 | phandle ibmvtpm_node; | |
1642 | ihandle ibmvtpm_inst; | |
b4ed0469 | 1643 | u32 entry = 0, size = 0, succ = 0; |
4a727429 | 1644 | u64 base; |
b4ed0469 | 1645 | __be32 val; |
4a727429 AL |
1646 | |
1647 | prom_debug("prom_instantiate_sml: start...\n"); | |
1648 | ||
2f82e982 | 1649 | ibmvtpm_node = call_prom("finddevice", 1, 1, ADDR("/vdevice/vtpm")); |
4a727429 AL |
1650 | prom_debug("ibmvtpm_node: %x\n", ibmvtpm_node); |
1651 | if (!PHANDLE_VALID(ibmvtpm_node)) | |
1652 | return; | |
1653 | ||
2f82e982 | 1654 | ibmvtpm_inst = call_prom("open", 1, 1, ADDR("/vdevice/vtpm")); |
4a727429 AL |
1655 | if (!IHANDLE_VALID(ibmvtpm_inst)) { |
1656 | prom_printf("opening vtpm package failed (%x)\n", ibmvtpm_inst); | |
1657 | return; | |
1658 | } | |
1659 | ||
b4ed0469 HCVL |
1660 | if (prom_getprop(ibmvtpm_node, "ibm,sml-efi-reformat-supported", |
1661 | &val, sizeof(val)) != PROM_ERROR) { | |
1662 | if (call_prom_ret("call-method", 2, 2, &succ, | |
1663 | ADDR("reformat-sml-to-efi-alignment"), | |
1664 | ibmvtpm_inst) != 0 || succ == 0) { | |
1665 | prom_printf("Reformat SML to EFI alignment failed\n"); | |
1666 | return; | |
1667 | } | |
b4ed0469 | 1668 | |
9e5d4af4 HCVL |
1669 | if (call_prom_ret("call-method", 2, 2, &size, |
1670 | ADDR("sml-get-allocated-size"), | |
1671 | ibmvtpm_inst) != 0 || size == 0) { | |
1672 | prom_printf("SML get allocated size failed\n"); | |
1673 | return; | |
1674 | } | |
1675 | } else { | |
1676 | if (call_prom_ret("call-method", 2, 2, &size, | |
1677 | ADDR("sml-get-handover-size"), | |
1678 | ibmvtpm_inst) != 0 || size == 0) { | |
1679 | prom_printf("SML get handover size failed\n"); | |
1680 | return; | |
1681 | } | |
4a727429 AL |
1682 | } |
1683 | ||
1684 | base = alloc_down(size, PAGE_SIZE, 0); | |
1685 | if (base == 0) | |
1686 | prom_panic("Could not allocate memory for sml\n"); | |
1687 | ||
1688 | prom_printf("instantiating sml at 0x%x...", base); | |
1689 | ||
9e5d4af4 HCVL |
1690 | memset((void *)base, 0, size); |
1691 | ||
4a727429 AL |
1692 | if (call_prom_ret("call-method", 4, 2, &entry, |
1693 | ADDR("sml-handover"), | |
1694 | ibmvtpm_inst, size, base) != 0 || entry == 0) { | |
1695 | prom_printf("SML handover failed\n"); | |
1696 | return; | |
1697 | } | |
1698 | prom_printf(" done\n"); | |
1699 | ||
1700 | reserve_mem(base, size); | |
1701 | ||
2f82e982 | 1702 | prom_setprop(ibmvtpm_node, "/vdevice/vtpm", "linux,sml-base", |
4a727429 | 1703 | &base, sizeof(base)); |
2f82e982 | 1704 | prom_setprop(ibmvtpm_node, "/vdevice/vtpm", "linux,sml-size", |
4a727429 AL |
1705 | &size, sizeof(size)); |
1706 | ||
1707 | prom_debug("sml base = 0x%x\n", base); | |
1708 | prom_debug("sml size = 0x%x\n", (long)size); | |
1709 | ||
1710 | prom_debug("prom_instantiate_sml: end...\n"); | |
1711 | } | |
1712 | ||
9b6b563c PM |
1713 | /* |
1714 | * Allocate room for and initialize TCE tables | |
1715 | */ | |
493adffc | 1716 | #ifdef __BIG_ENDIAN__ |
9b6b563c PM |
1717 | static void __init prom_initialize_tce_table(void) |
1718 | { | |
1719 | phandle node; | |
1720 | ihandle phb_node; | |
1721 | char compatible[64], type[64], model[64]; | |
5827d416 | 1722 | char *path = prom_scratch; |
9b6b563c PM |
1723 | u64 base, align; |
1724 | u32 minalign, minsize; | |
1725 | u64 tce_entry, *tce_entryp; | |
1726 | u64 local_alloc_top, local_alloc_bottom; | |
1727 | u64 i; | |
1728 | ||
5827d416 | 1729 | if (prom_iommu_off) |
9b6b563c PM |
1730 | return; |
1731 | ||
1732 | prom_debug("starting prom_initialize_tce_table\n"); | |
1733 | ||
1734 | /* Cache current top of allocs so we reserve a single block */ | |
5827d416 | 1735 | local_alloc_top = alloc_top_high; |
9b6b563c PM |
1736 | local_alloc_bottom = local_alloc_top; |
1737 | ||
1738 | /* Search all nodes looking for PHBs. */ | |
1739 | for (node = 0; prom_next_node(&node); ) { | |
1740 | compatible[0] = 0; | |
1741 | type[0] = 0; | |
1742 | model[0] = 0; | |
1743 | prom_getprop(node, "compatible", | |
1744 | compatible, sizeof(compatible)); | |
1745 | prom_getprop(node, "device_type", type, sizeof(type)); | |
1746 | prom_getprop(node, "model", model, sizeof(model)); | |
1747 | ||
5827d416 | 1748 | if ((type[0] == 0) || (strstr(type, "pci") == NULL)) |
9b6b563c PM |
1749 | continue; |
1750 | ||
e788ff13 | 1751 | /* Keep the old logic intact to avoid regression. */ |
9b6b563c | 1752 | if (compatible[0] != 0) { |
5827d416 AB |
1753 | if ((strstr(compatible, "python") == NULL) && |
1754 | (strstr(compatible, "Speedwagon") == NULL) && | |
1755 | (strstr(compatible, "Winnipeg") == NULL)) | |
9b6b563c PM |
1756 | continue; |
1757 | } else if (model[0] != 0) { | |
5827d416 AB |
1758 | if ((strstr(model, "ython") == NULL) && |
1759 | (strstr(model, "peedwagon") == NULL) && | |
1760 | (strstr(model, "innipeg") == NULL)) | |
9b6b563c PM |
1761 | continue; |
1762 | } | |
1763 | ||
1764 | if (prom_getprop(node, "tce-table-minalign", &minalign, | |
1765 | sizeof(minalign)) == PROM_ERROR) | |
1766 | minalign = 0; | |
1767 | if (prom_getprop(node, "tce-table-minsize", &minsize, | |
1768 | sizeof(minsize)) == PROM_ERROR) | |
1769 | minsize = 4UL << 20; | |
1770 | ||
1771 | /* | |
1772 | * Even though we read what OF wants, we just set the table | |
1773 | * size to 4 MB. This is enough to map 2GB of PCI DMA space. | |
1774 | * By doing this, we avoid the pitfalls of trying to DMA to | |
1775 | * MMIO space and the DMA alias hole. | |
1776 | * | |
1777 | * On POWER4, firmware sets the TCE region by assuming | |
1778 | * each TCE table is 8MB. Using this memory for anything | |
1779 | * else will impact performance, so we always allocate 8MB. | |
1780 | * Anton | |
1781 | */ | |
d3dbeef6 | 1782 | if (pvr_version_is(PVR_POWER4) || pvr_version_is(PVR_POWER4p)) |
9b6b563c PM |
1783 | minsize = 8UL << 20; |
1784 | else | |
1785 | minsize = 4UL << 20; | |
1786 | ||
1787 | /* Align to the greater of the align or size */ | |
1788 | align = max(minalign, minsize); | |
1789 | base = alloc_down(minsize, align, 1); | |
1790 | if (base == 0) | |
1791 | prom_panic("ERROR, cannot find space for TCE table.\n"); | |
1792 | if (base < local_alloc_bottom) | |
1793 | local_alloc_bottom = base; | |
1794 | ||
9b6b563c | 1795 | /* It seems OF doesn't null-terminate the path :-( */ |
aca71ef8 | 1796 | memset(path, 0, PROM_SCRATCH_SIZE); |
9b6b563c PM |
1797 | /* Call OF to setup the TCE hardware */ |
1798 | if (call_prom("package-to-path", 3, 1, node, | |
1799 | path, PROM_SCRATCH_SIZE-1) == PROM_ERROR) { | |
1800 | prom_printf("package-to-path failed\n"); | |
1801 | } | |
1802 | ||
a23414be PM |
1803 | /* Save away the TCE table attributes for later use. */ |
1804 | prom_setprop(node, path, "linux,tce-base", &base, sizeof(base)); | |
1805 | prom_setprop(node, path, "linux,tce-size", &minsize, sizeof(minsize)); | |
1806 | ||
9b6b563c PM |
1807 | prom_debug("TCE table: %s\n", path); |
1808 | prom_debug("\tnode = 0x%x\n", node); | |
1809 | prom_debug("\tbase = 0x%x\n", base); | |
1810 | prom_debug("\tsize = 0x%x\n", minsize); | |
1811 | ||
1812 | /* Initialize the table to have a one-to-one mapping | |
1813 | * over the allocated size. | |
1814 | */ | |
2b931fb6 | 1815 | tce_entryp = (u64 *)base; |
9b6b563c PM |
1816 | for (i = 0; i < (minsize >> 3) ;tce_entryp++, i++) { |
1817 | tce_entry = (i << PAGE_SHIFT); | |
1818 | tce_entry |= 0x3; | |
1819 | *tce_entryp = tce_entry; | |
1820 | } | |
1821 | ||
1822 | prom_printf("opening PHB %s", path); | |
1823 | phb_node = call_prom("open", 1, 1, path); | |
1824 | if (phb_node == 0) | |
1825 | prom_printf("... failed\n"); | |
1826 | else | |
1827 | prom_printf("... done\n"); | |
1828 | ||
1829 | call_prom("call-method", 6, 0, ADDR("set-64-bit-addressing"), | |
1830 | phb_node, -1, minsize, | |
1831 | (u32) base, (u32) (base >> 32)); | |
1832 | call_prom("close", 1, 0, phb_node); | |
1833 | } | |
1834 | ||
1835 | reserve_mem(local_alloc_bottom, local_alloc_top - local_alloc_bottom); | |
1836 | ||
2babf5c2 ME |
1837 | /* These are only really needed if there is a memory limit in |
1838 | * effect, but we don't know so export them always. */ | |
5827d416 AB |
1839 | prom_tce_alloc_start = local_alloc_bottom; |
1840 | prom_tce_alloc_end = local_alloc_top; | |
9b6b563c PM |
1841 | |
1842 | /* Flag the first invalid entry */ | |
1843 | prom_debug("ending prom_initialize_tce_table\n"); | |
1844 | } | |
493adffc BH |
1845 | #endif /* __BIG_ENDIAN__ */ |
1846 | #endif /* CONFIG_PPC64 */ | |
9b6b563c PM |
1847 | |
1848 | /* | |
1849 | * With CHRP SMP we need to use the OF to start the other processors. | |
1850 | * We can't wait until smp_boot_cpus (the OF is trashed by then) | |
1851 | * so we have to put the processors into a holding pattern controlled | |
1852 | * by the kernel (not OF) before we destroy the OF. | |
1853 | * | |
1854 | * This uses a chunk of low memory, puts some holding pattern | |
1855 | * code there and sends the other processors off to there until | |
1856 | * smp_boot_cpus tells them to do something. The holding pattern | |
1857 | * checks that address until its cpu # is there, when it is that | |
1858 | * cpu jumps to __secondary_start(). smp_boot_cpus() takes care | |
1859 | * of setting those values. | |
1860 | * | |
1861 | * We also use physical address 0x4 here to tell when a cpu | |
1862 | * is in its holding pattern code. | |
1863 | * | |
1864 | * -- Cort | |
1865 | */ | |
bbd0abda PM |
1866 | /* |
1867 | * We want to reference the copy of __secondary_hold_* in the | |
1868 | * 0 - 0x100 address range | |
1869 | */ | |
1870 | #define LOW_ADDR(x) (((unsigned long) &(x)) & 0xff) | |
1871 | ||
9b6b563c PM |
1872 | static void __init prom_hold_cpus(void) |
1873 | { | |
9b6b563c | 1874 | unsigned long i; |
9b6b563c PM |
1875 | phandle node; |
1876 | char type[64]; | |
9b6b563c | 1877 | unsigned long *spinloop |
bbd0abda | 1878 | = (void *) LOW_ADDR(__secondary_hold_spinloop); |
9b6b563c | 1879 | unsigned long *acknowledge |
bbd0abda | 1880 | = (void *) LOW_ADDR(__secondary_hold_acknowledge); |
bbd0abda | 1881 | unsigned long secondary_hold = LOW_ADDR(__secondary_hold); |
9b6b563c | 1882 | |
dbe78b40 BH |
1883 | /* |
1884 | * On pseries, if RTAS supports "query-cpu-stopped-state", | |
1885 | * we skip this stage, the CPUs will be started by the | |
1886 | * kernel using RTAS. | |
1887 | */ | |
1888 | if ((of_platform == PLATFORM_PSERIES || | |
1889 | of_platform == PLATFORM_PSERIES_LPAR) && | |
1890 | rtas_has_query_cpu_stopped) { | |
1891 | prom_printf("prom_hold_cpus: skipped\n"); | |
1892 | return; | |
1893 | } | |
1894 | ||
9b6b563c PM |
1895 | prom_debug("prom_hold_cpus: start...\n"); |
1896 | prom_debug(" 1) spinloop = 0x%x\n", (unsigned long)spinloop); | |
1897 | prom_debug(" 1) *spinloop = 0x%x\n", *spinloop); | |
1898 | prom_debug(" 1) acknowledge = 0x%x\n", | |
1899 | (unsigned long)acknowledge); | |
1900 | prom_debug(" 1) *acknowledge = 0x%x\n", *acknowledge); | |
1901 | prom_debug(" 1) secondary_hold = 0x%x\n", secondary_hold); | |
1902 | ||
1903 | /* Set the common spinloop variable, so all of the secondary cpus | |
1904 | * will block when they are awakened from their OF spinloop. | |
1905 | * This must occur for both SMP and non SMP kernels, since OF will | |
1906 | * be trashed when we move the kernel. | |
1907 | */ | |
1908 | *spinloop = 0; | |
1909 | ||
9b6b563c PM |
1910 | /* look for cpus */ |
1911 | for (node = 0; prom_next_node(&node); ) { | |
493adffc BH |
1912 | unsigned int cpu_no; |
1913 | __be32 reg; | |
1914 | ||
9b6b563c PM |
1915 | type[0] = 0; |
1916 | prom_getprop(node, "device_type", type, sizeof(type)); | |
5827d416 | 1917 | if (strcmp(type, "cpu") != 0) |
9b6b563c PM |
1918 | continue; |
1919 | ||
1920 | /* Skip non-configured cpus. */ | |
1921 | if (prom_getprop(node, "status", type, sizeof(type)) > 0) | |
5827d416 | 1922 | if (strcmp(type, "okay") != 0) |
9b6b563c PM |
1923 | continue; |
1924 | ||
493adffc | 1925 | reg = cpu_to_be32(-1); /* make sparse happy */ |
9b6b563c | 1926 | prom_getprop(node, "reg", ®, sizeof(reg)); |
493adffc | 1927 | cpu_no = be32_to_cpu(reg); |
9b6b563c | 1928 | |
493adffc | 1929 | prom_debug("cpu hw idx = %lu\n", cpu_no); |
9b6b563c PM |
1930 | |
1931 | /* Init the acknowledge var which will be reset by | |
1932 | * the secondary cpu when it awakens from its OF | |
1933 | * spinloop. | |
1934 | */ | |
1935 | *acknowledge = (unsigned long)-1; | |
1936 | ||
493adffc | 1937 | if (cpu_no != prom.cpu) { |
27f44888 | 1938 | /* Primary Thread of non-boot cpu or any thread */ |
493adffc | 1939 | prom_printf("starting cpu hw idx %lu... ", cpu_no); |
9b6b563c | 1940 | call_prom("start-cpu", 3, 0, node, |
493adffc | 1941 | secondary_hold, cpu_no); |
9b6b563c | 1942 | |
bbd0abda PM |
1943 | for (i = 0; (i < 100000000) && |
1944 | (*acknowledge == ((unsigned long)-1)); i++ ) | |
9b6b563c PM |
1945 | mb(); |
1946 | ||
493adffc | 1947 | if (*acknowledge == cpu_no) |
9b6b563c | 1948 | prom_printf("done\n"); |
bbd0abda | 1949 | else |
9b6b563c | 1950 | prom_printf("failed: %x\n", *acknowledge); |
9b6b563c PM |
1951 | } |
1952 | #ifdef CONFIG_SMP | |
1953 | else | |
493adffc | 1954 | prom_printf("boot cpu hw idx %lu\n", cpu_no); |
9b6b563c | 1955 | #endif /* CONFIG_SMP */ |
9b6b563c | 1956 | } |
9b6b563c | 1957 | |
9b6b563c | 1958 | prom_debug("prom_hold_cpus: end...\n"); |
9b6b563c PM |
1959 | } |
1960 | ||
1961 | ||
1962 | static void __init prom_init_client_services(unsigned long pp) | |
1963 | { | |
9b6b563c | 1964 | /* Get a handle to the prom entry point before anything else */ |
5827d416 | 1965 | prom_entry = pp; |
9b6b563c PM |
1966 | |
1967 | /* get a handle for the stdout device */ | |
5827d416 AB |
1968 | prom.chosen = call_prom("finddevice", 1, 1, ADDR("/chosen")); |
1969 | if (!PHANDLE_VALID(prom.chosen)) | |
9b6b563c PM |
1970 | prom_panic("cannot find chosen"); /* msg won't be printed :( */ |
1971 | ||
1972 | /* get device tree root */ | |
5827d416 AB |
1973 | prom.root = call_prom("finddevice", 1, 1, ADDR("/")); |
1974 | if (!PHANDLE_VALID(prom.root)) | |
9b6b563c | 1975 | prom_panic("cannot find device tree root"); /* msg won't be printed :( */ |
a575b807 | 1976 | |
5827d416 | 1977 | prom.mmumap = 0; |
a575b807 PM |
1978 | } |
1979 | ||
1980 | #ifdef CONFIG_PPC32 | |
1981 | /* | |
1982 | * For really old powermacs, we need to map things we claim. | |
1983 | * For that, we need the ihandle of the mmu. | |
a23414be | 1984 | * Also, on the longtrail, we need to work around other bugs. |
a575b807 PM |
1985 | */ |
1986 | static void __init prom_find_mmu(void) | |
1987 | { | |
a575b807 PM |
1988 | phandle oprom; |
1989 | char version[64]; | |
1990 | ||
1991 | oprom = call_prom("finddevice", 1, 1, ADDR("/openprom")); | |
1992 | if (!PHANDLE_VALID(oprom)) | |
1993 | return; | |
1994 | if (prom_getprop(oprom, "model", version, sizeof(version)) <= 0) | |
1995 | return; | |
1996 | version[sizeof(version) - 1] = 0; | |
a575b807 | 1997 | /* XXX might need to add other versions here */ |
a23414be PM |
1998 | if (strcmp(version, "Open Firmware, 1.0.5") == 0) |
1999 | of_workarounds = OF_WA_CLAIM; | |
2000 | else if (strncmp(version, "FirmWorks,3.", 12) == 0) { | |
2001 | of_workarounds = OF_WA_CLAIM | OF_WA_LONGTRAIL; | |
2002 | call_prom("interpret", 1, 1, "dev /memory 0 to allow-reclaim"); | |
2003 | } else | |
a575b807 | 2004 | return; |
5827d416 AB |
2005 | prom.memory = call_prom("open", 1, 1, ADDR("/memory")); |
2006 | prom_getprop(prom.chosen, "mmu", &prom.mmumap, | |
2007 | sizeof(prom.mmumap)); | |
493adffc | 2008 | prom.mmumap = be32_to_cpu(prom.mmumap); |
5827d416 | 2009 | if (!IHANDLE_VALID(prom.memory) || !IHANDLE_VALID(prom.mmumap)) |
a23414be | 2010 | of_workarounds &= ~OF_WA_CLAIM; /* hmmm */ |
9b6b563c | 2011 | } |
a575b807 PM |
2012 | #else |
2013 | #define prom_find_mmu() | |
2014 | #endif | |
9b6b563c PM |
2015 | |
2016 | static void __init prom_init_stdout(void) | |
2017 | { | |
5827d416 | 2018 | char *path = of_stdout_device; |
9b6b563c | 2019 | char type[16]; |
493adffc BH |
2020 | phandle stdout_node; |
2021 | __be32 val; | |
9b6b563c | 2022 | |
5827d416 | 2023 | if (prom_getprop(prom.chosen, "stdout", &val, sizeof(val)) <= 0) |
9b6b563c PM |
2024 | prom_panic("cannot find stdout"); |
2025 | ||
493adffc | 2026 | prom.stdout = be32_to_cpu(val); |
9b6b563c PM |
2027 | |
2028 | /* Get the full OF pathname of the stdout device */ | |
2029 | memset(path, 0, 256); | |
5827d416 | 2030 | call_prom("instance-to-path", 3, 1, prom.stdout, path, 255); |
5827d416 AB |
2031 | prom_printf("OF stdout device is: %s\n", of_stdout_device); |
2032 | prom_setprop(prom.chosen, "/chosen", "linux,stdout-path", | |
a23414be | 2033 | path, strlen(path) + 1); |
9b6b563c | 2034 | |
10348f59 BH |
2035 | /* instance-to-package fails on PA-Semi */ |
2036 | stdout_node = call_prom("instance-to-package", 1, 1, prom.stdout); | |
2037 | if (stdout_node != PROM_ERROR) { | |
2038 | val = cpu_to_be32(stdout_node); | |
2039 | prom_setprop(prom.chosen, "/chosen", "linux,stdout-package", | |
2040 | &val, sizeof(val)); | |
2041 | ||
2042 | /* If it's a display, note it */ | |
2043 | memset(type, 0, sizeof(type)); | |
2044 | prom_getprop(stdout_node, "device_type", type, sizeof(type)); | |
2045 | if (strcmp(type, "display") == 0) | |
2046 | prom_setprop(stdout_node, path, "linux,boot-display", NULL, 0); | |
2047 | } | |
9b6b563c PM |
2048 | } |
2049 | ||
9b6b563c PM |
2050 | static int __init prom_find_machine_type(void) |
2051 | { | |
9b6b563c PM |
2052 | char compat[256]; |
2053 | int len, i = 0; | |
21fe3301 | 2054 | #ifdef CONFIG_PPC64 |
9b6b563c | 2055 | phandle rtas; |
e8222502 | 2056 | int x; |
21fe3301 | 2057 | #endif |
e8222502 | 2058 | |
6e35d5da | 2059 | /* Look for a PowerMac or a Cell */ |
5827d416 | 2060 | len = prom_getprop(prom.root, "compatible", |
9b6b563c PM |
2061 | compat, sizeof(compat)-1); |
2062 | if (len > 0) { | |
2063 | compat[len] = 0; | |
2064 | while (i < len) { | |
2065 | char *p = &compat[i]; | |
2066 | int sl = strlen(p); | |
2067 | if (sl == 0) | |
2068 | break; | |
5827d416 AB |
2069 | if (strstr(p, "Power Macintosh") || |
2070 | strstr(p, "MacRISC")) | |
9b6b563c | 2071 | return PLATFORM_POWERMAC; |
133dda1e AB |
2072 | #ifdef CONFIG_PPC64 |
2073 | /* We must make sure we don't detect the IBM Cell | |
2074 | * blades as pSeries due to some firmware issues, | |
2075 | * so we do it here. | |
2076 | */ | |
5827d416 AB |
2077 | if (strstr(p, "IBM,CBEA") || |
2078 | strstr(p, "IBM,CPBW-1.0")) | |
133dda1e AB |
2079 | return PLATFORM_GENERIC; |
2080 | #endif /* CONFIG_PPC64 */ | |
9b6b563c PM |
2081 | i += sl + 1; |
2082 | } | |
2083 | } | |
2084 | #ifdef CONFIG_PPC64 | |
6e35d5da BH |
2085 | /* Try to detect OPAL */ |
2086 | if (PHANDLE_VALID(call_prom("finddevice", 1, 1, ADDR("/ibm,opal")))) | |
2087 | return PLATFORM_OPAL; | |
2088 | ||
2089 | /* Try to figure out if it's an IBM pSeries or any other | |
e8222502 BH |
2090 | * PAPR compliant platform. We assume it is if : |
2091 | * - /device_type is "chrp" (please, do NOT use that for future | |
2092 | * non-IBM designs ! | |
2093 | * - it has /rtas | |
2094 | */ | |
5827d416 | 2095 | len = prom_getprop(prom.root, "device_type", |
e8222502 BH |
2096 | compat, sizeof(compat)-1); |
2097 | if (len <= 0) | |
2098 | return PLATFORM_GENERIC; | |
5827d416 | 2099 | if (strcmp(compat, "chrp")) |
e8222502 BH |
2100 | return PLATFORM_GENERIC; |
2101 | ||
9b6b563c PM |
2102 | /* Default to pSeries. We need to know if we are running LPAR */ |
2103 | rtas = call_prom("finddevice", 1, 1, ADDR("/rtas")); | |
e8222502 BH |
2104 | if (!PHANDLE_VALID(rtas)) |
2105 | return PLATFORM_GENERIC; | |
2106 | x = prom_getproplen(rtas, "ibm,hypertas-functions"); | |
2107 | if (x != PROM_ERROR) { | |
4da727ae | 2108 | prom_debug("Hypertas detected, assuming LPAR !\n"); |
e8222502 | 2109 | return PLATFORM_PSERIES_LPAR; |
9b6b563c PM |
2110 | } |
2111 | return PLATFORM_PSERIES; | |
2112 | #else | |
e8222502 | 2113 | return PLATFORM_GENERIC; |
9b6b563c PM |
2114 | #endif |
2115 | } | |
2116 | ||
9b6b563c PM |
2117 | static int __init prom_set_color(ihandle ih, int i, int r, int g, int b) |
2118 | { | |
2119 | return call_prom("call-method", 6, 1, ADDR("color!"), ih, i, b, g, r); | |
2120 | } | |
2121 | ||
2122 | /* | |
2123 | * If we have a display that we don't know how to drive, | |
2124 | * we will want to try to execute OF's open method for it | |
2125 | * later. However, OF will probably fall over if we do that | |
2126 | * we've taken over the MMU. | |
2127 | * So we check whether we will need to open the display, | |
2128 | * and if so, open it now. | |
2129 | */ | |
2130 | static void __init prom_check_displays(void) | |
2131 | { | |
2132 | char type[16], *path; | |
2133 | phandle node; | |
2134 | ihandle ih; | |
2135 | int i; | |
9b6b563c PM |
2136 | |
2137 | static unsigned char default_colors[] = { | |
2138 | 0x00, 0x00, 0x00, | |
2139 | 0x00, 0x00, 0xaa, | |
2140 | 0x00, 0xaa, 0x00, | |
2141 | 0x00, 0xaa, 0xaa, | |
2142 | 0xaa, 0x00, 0x00, | |
2143 | 0xaa, 0x00, 0xaa, | |
2144 | 0xaa, 0xaa, 0x00, | |
2145 | 0xaa, 0xaa, 0xaa, | |
2146 | 0x55, 0x55, 0x55, | |
2147 | 0x55, 0x55, 0xff, | |
2148 | 0x55, 0xff, 0x55, | |
2149 | 0x55, 0xff, 0xff, | |
2150 | 0xff, 0x55, 0x55, | |
2151 | 0xff, 0x55, 0xff, | |
2152 | 0xff, 0xff, 0x55, | |
2153 | 0xff, 0xff, 0xff | |
2154 | }; | |
2155 | const unsigned char *clut; | |
2156 | ||
4da727ae | 2157 | prom_debug("Looking for displays\n"); |
9b6b563c PM |
2158 | for (node = 0; prom_next_node(&node); ) { |
2159 | memset(type, 0, sizeof(type)); | |
2160 | prom_getprop(node, "device_type", type, sizeof(type)); | |
5827d416 | 2161 | if (strcmp(type, "display") != 0) |
9b6b563c PM |
2162 | continue; |
2163 | ||
2164 | /* It seems OF doesn't null-terminate the path :-( */ | |
5827d416 | 2165 | path = prom_scratch; |
9b6b563c PM |
2166 | memset(path, 0, PROM_SCRATCH_SIZE); |
2167 | ||
2168 | /* | |
2169 | * leave some room at the end of the path for appending extra | |
2170 | * arguments | |
2171 | */ | |
2172 | if (call_prom("package-to-path", 3, 1, node, path, | |
2173 | PROM_SCRATCH_SIZE-10) == PROM_ERROR) | |
2174 | continue; | |
1f8737aa | 2175 | prom_printf("found display : %s, opening... ", path); |
9b6b563c PM |
2176 | |
2177 | ih = call_prom("open", 1, 1, path); | |
2178 | if (ih == 0) { | |
2179 | prom_printf("failed\n"); | |
2180 | continue; | |
2181 | } | |
2182 | ||
2183 | /* Success */ | |
2184 | prom_printf("done\n"); | |
a23414be | 2185 | prom_setprop(node, path, "linux,opened", NULL, 0); |
9b6b563c PM |
2186 | |
2187 | /* Setup a usable color table when the appropriate | |
2188 | * method is available. Should update this to set-colors */ | |
5827d416 | 2189 | clut = default_colors; |
3f53638c | 2190 | for (i = 0; i < 16; i++, clut += 3) |
9b6b563c PM |
2191 | if (prom_set_color(ih, i, clut[0], clut[1], |
2192 | clut[2]) != 0) | |
2193 | break; | |
2194 | ||
2195 | #ifdef CONFIG_LOGO_LINUX_CLUT224 | |
5827d416 AB |
2196 | clut = PTRRELOC(logo_linux_clut224.clut); |
2197 | for (i = 0; i < logo_linux_clut224.clutsize; i++, clut += 3) | |
9b6b563c PM |
2198 | if (prom_set_color(ih, i + 32, clut[0], clut[1], |
2199 | clut[2]) != 0) | |
2200 | break; | |
2201 | #endif /* CONFIG_LOGO_LINUX_CLUT224 */ | |
7191b615 BH |
2202 | |
2203 | #ifdef CONFIG_PPC_EARLY_DEBUG_BOOTX | |
2204 | if (prom_getprop(node, "linux,boot-display", NULL, 0) != | |
2205 | PROM_ERROR) { | |
2206 | u32 width, height, pitch, addr; | |
2207 | ||
2208 | prom_printf("Setting btext !\n"); | |
2209 | prom_getprop(node, "width", &width, 4); | |
2210 | prom_getprop(node, "height", &height, 4); | |
2211 | prom_getprop(node, "linebytes", &pitch, 4); | |
2212 | prom_getprop(node, "address", &addr, 4); | |
2213 | prom_printf("W=%d H=%d LB=%d addr=0x%x\n", | |
2214 | width, height, pitch, addr); | |
2215 | btext_setup_display(width, height, 8, pitch, addr); | |
2216 | } | |
2217 | #endif /* CONFIG_PPC_EARLY_DEBUG_BOOTX */ | |
9b6b563c PM |
2218 | } |
2219 | } | |
2220 | ||
2221 | ||
2222 | /* Return (relocated) pointer to this much memory: moves initrd if reqd. */ | |
2223 | static void __init *make_room(unsigned long *mem_start, unsigned long *mem_end, | |
2224 | unsigned long needed, unsigned long align) | |
2225 | { | |
2226 | void *ret; | |
2227 | ||
2228 | *mem_start = _ALIGN(*mem_start, align); | |
2229 | while ((*mem_start + needed) > *mem_end) { | |
2230 | unsigned long room, chunk; | |
2231 | ||
2232 | prom_debug("Chunk exhausted, claiming more at %x...\n", | |
5827d416 AB |
2233 | alloc_bottom); |
2234 | room = alloc_top - alloc_bottom; | |
9b6b563c PM |
2235 | if (room > DEVTREE_CHUNK_SIZE) |
2236 | room = DEVTREE_CHUNK_SIZE; | |
2237 | if (room < PAGE_SIZE) | |
fbafd728 AB |
2238 | prom_panic("No memory for flatten_device_tree " |
2239 | "(no room)\n"); | |
9b6b563c PM |
2240 | chunk = alloc_up(room, 0); |
2241 | if (chunk == 0) | |
fbafd728 AB |
2242 | prom_panic("No memory for flatten_device_tree " |
2243 | "(claim failed)\n"); | |
966728dd | 2244 | *mem_end = chunk + room; |
9b6b563c PM |
2245 | } |
2246 | ||
2247 | ret = (void *)*mem_start; | |
2248 | *mem_start += needed; | |
2249 | ||
2250 | return ret; | |
2251 | } | |
2252 | ||
493adffc BH |
2253 | #define dt_push_token(token, mem_start, mem_end) do { \ |
2254 | void *room = make_room(mem_start, mem_end, 4, 4); \ | |
2255 | *(__be32 *)room = cpu_to_be32(token); \ | |
2256 | } while(0) | |
9b6b563c PM |
2257 | |
2258 | static unsigned long __init dt_find_string(char *str) | |
2259 | { | |
2260 | char *s, *os; | |
2261 | ||
5827d416 | 2262 | s = os = (char *)dt_string_start; |
9b6b563c | 2263 | s += 4; |
5827d416 | 2264 | while (s < (char *)dt_string_end) { |
9b6b563c PM |
2265 | if (strcmp(s, str) == 0) |
2266 | return s - os; | |
2267 | s += strlen(s) + 1; | |
2268 | } | |
2269 | return 0; | |
2270 | } | |
2271 | ||
2272 | /* | |
2273 | * The Open Firmware 1275 specification states properties must be 31 bytes or | |
2274 | * less, however not all firmwares obey this. Make it 64 bytes to be safe. | |
2275 | */ | |
2276 | #define MAX_PROPERTY_NAME 64 | |
2277 | ||
2278 | static void __init scan_dt_build_strings(phandle node, | |
2279 | unsigned long *mem_start, | |
2280 | unsigned long *mem_end) | |
2281 | { | |
2282 | char *prev_name, *namep, *sstart; | |
2283 | unsigned long soff; | |
2284 | phandle child; | |
2285 | ||
5827d416 | 2286 | sstart = (char *)dt_string_start; |
9b6b563c PM |
2287 | |
2288 | /* get and store all property names */ | |
5827d416 | 2289 | prev_name = ""; |
9b6b563c PM |
2290 | for (;;) { |
2291 | /* 64 is max len of name including nul. */ | |
2292 | namep = make_room(mem_start, mem_end, MAX_PROPERTY_NAME, 1); | |
2293 | if (call_prom("nextprop", 3, 1, node, prev_name, namep) != 1) { | |
2294 | /* No more nodes: unwind alloc */ | |
2295 | *mem_start = (unsigned long)namep; | |
2296 | break; | |
2297 | } | |
2298 | ||
2299 | /* skip "name" */ | |
5827d416 | 2300 | if (strcmp(namep, "name") == 0) { |
9b6b563c | 2301 | *mem_start = (unsigned long)namep; |
5827d416 | 2302 | prev_name = "name"; |
9b6b563c PM |
2303 | continue; |
2304 | } | |
2305 | /* get/create string entry */ | |
2306 | soff = dt_find_string(namep); | |
2307 | if (soff != 0) { | |
2308 | *mem_start = (unsigned long)namep; | |
2309 | namep = sstart + soff; | |
2310 | } else { | |
2311 | /* Trim off some if we can */ | |
2312 | *mem_start = (unsigned long)namep + strlen(namep) + 1; | |
5827d416 | 2313 | dt_string_end = *mem_start; |
9b6b563c PM |
2314 | } |
2315 | prev_name = namep; | |
2316 | } | |
2317 | ||
2318 | /* do all our children */ | |
2319 | child = call_prom("child", 1, 1, node); | |
2320 | while (child != 0) { | |
2321 | scan_dt_build_strings(child, mem_start, mem_end); | |
2322 | child = call_prom("peer", 1, 1, child); | |
2323 | } | |
2324 | } | |
2325 | ||
2326 | static void __init scan_dt_build_struct(phandle node, unsigned long *mem_start, | |
2327 | unsigned long *mem_end) | |
2328 | { | |
2329 | phandle child; | |
2330 | char *namep, *prev_name, *sstart, *p, *ep, *lp, *path; | |
2331 | unsigned long soff; | |
2332 | unsigned char *valp; | |
2333 | static char pname[MAX_PROPERTY_NAME]; | |
6e35d5da | 2334 | int l, room, has_phandle = 0; |
9b6b563c PM |
2335 | |
2336 | dt_push_token(OF_DT_BEGIN_NODE, mem_start, mem_end); | |
2337 | ||
2338 | /* get the node's full name */ | |
2339 | namep = (char *)*mem_start; | |
c4988820 PM |
2340 | room = *mem_end - *mem_start; |
2341 | if (room > 255) | |
2342 | room = 255; | |
2343 | l = call_prom("package-to-path", 3, 1, node, namep, room); | |
9b6b563c PM |
2344 | if (l >= 0) { |
2345 | /* Didn't fit? Get more room. */ | |
c4988820 PM |
2346 | if (l >= room) { |
2347 | if (l >= *mem_end - *mem_start) | |
2348 | namep = make_room(mem_start, mem_end, l+1, 1); | |
9b6b563c PM |
2349 | call_prom("package-to-path", 3, 1, node, namep, l); |
2350 | } | |
2351 | namep[l] = '\0'; | |
2352 | ||
2353 | /* Fixup an Apple bug where they have bogus \0 chars in the | |
a575b807 PM |
2354 | * middle of the path in some properties, and extract |
2355 | * the unit name (everything after the last '/'). | |
9b6b563c | 2356 | */ |
a575b807 | 2357 | for (lp = p = namep, ep = namep + l; p < ep; p++) { |
9b6b563c | 2358 | if (*p == '/') |
a575b807 PM |
2359 | lp = namep; |
2360 | else if (*p != 0) | |
2361 | *lp++ = *p; | |
2362 | } | |
2363 | *lp = 0; | |
2364 | *mem_start = _ALIGN((unsigned long)lp + 1, 4); | |
9b6b563c PM |
2365 | } |
2366 | ||
2367 | /* get it again for debugging */ | |
5827d416 | 2368 | path = prom_scratch; |
9b6b563c PM |
2369 | memset(path, 0, PROM_SCRATCH_SIZE); |
2370 | call_prom("package-to-path", 3, 1, node, path, PROM_SCRATCH_SIZE-1); | |
2371 | ||
2372 | /* get and store all properties */ | |
5827d416 AB |
2373 | prev_name = ""; |
2374 | sstart = (char *)dt_string_start; | |
9b6b563c PM |
2375 | for (;;) { |
2376 | if (call_prom("nextprop", 3, 1, node, prev_name, | |
5827d416 | 2377 | pname) != 1) |
9b6b563c PM |
2378 | break; |
2379 | ||
2380 | /* skip "name" */ | |
5827d416 AB |
2381 | if (strcmp(pname, "name") == 0) { |
2382 | prev_name = "name"; | |
9b6b563c PM |
2383 | continue; |
2384 | } | |
2385 | ||
2386 | /* find string offset */ | |
5827d416 | 2387 | soff = dt_find_string(pname); |
9b6b563c PM |
2388 | if (soff == 0) { |
2389 | prom_printf("WARNING: Can't find string index for" | |
5827d416 | 2390 | " <%s>, node %s\n", pname, path); |
9b6b563c PM |
2391 | break; |
2392 | } | |
2393 | prev_name = sstart + soff; | |
2394 | ||
2395 | /* get length */ | |
5827d416 | 2396 | l = call_prom("getproplen", 2, 1, node, pname); |
9b6b563c PM |
2397 | |
2398 | /* sanity checks */ | |
2399 | if (l == PROM_ERROR) | |
2400 | continue; | |
9b6b563c PM |
2401 | |
2402 | /* push property head */ | |
2403 | dt_push_token(OF_DT_PROP, mem_start, mem_end); | |
2404 | dt_push_token(l, mem_start, mem_end); | |
2405 | dt_push_token(soff, mem_start, mem_end); | |
2406 | ||
2407 | /* push property content */ | |
2408 | valp = make_room(mem_start, mem_end, l, 4); | |
5827d416 | 2409 | call_prom("getprop", 4, 1, node, pname, valp, l); |
9b6b563c | 2410 | *mem_start = _ALIGN(*mem_start, 4); |
6e35d5da | 2411 | |
5827d416 | 2412 | if (!strcmp(pname, "phandle")) |
6e35d5da | 2413 | has_phandle = 1; |
9b6b563c PM |
2414 | } |
2415 | ||
6e35d5da BH |
2416 | /* Add a "linux,phandle" property if no "phandle" property already |
2417 | * existed (can happen with OPAL) | |
2418 | */ | |
2419 | if (!has_phandle) { | |
5827d416 | 2420 | soff = dt_find_string("linux,phandle"); |
6e35d5da BH |
2421 | if (soff == 0) |
2422 | prom_printf("WARNING: Can't find string index for" | |
2423 | " <linux-phandle> node %s\n", path); | |
2424 | else { | |
2425 | dt_push_token(OF_DT_PROP, mem_start, mem_end); | |
2426 | dt_push_token(4, mem_start, mem_end); | |
2427 | dt_push_token(soff, mem_start, mem_end); | |
2428 | valp = make_room(mem_start, mem_end, 4, 4); | |
493adffc | 2429 | *(__be32 *)valp = cpu_to_be32(node); |
6e35d5da | 2430 | } |
9b6b563c PM |
2431 | } |
2432 | ||
2433 | /* do all our children */ | |
2434 | child = call_prom("child", 1, 1, node); | |
2435 | while (child != 0) { | |
2436 | scan_dt_build_struct(child, mem_start, mem_end); | |
2437 | child = call_prom("peer", 1, 1, child); | |
2438 | } | |
2439 | ||
2440 | dt_push_token(OF_DT_END_NODE, mem_start, mem_end); | |
2441 | } | |
2442 | ||
2443 | static void __init flatten_device_tree(void) | |
2444 | { | |
2445 | phandle root; | |
2446 | unsigned long mem_start, mem_end, room; | |
2447 | struct boot_param_header *hdr; | |
9b6b563c PM |
2448 | char *namep; |
2449 | u64 *rsvmap; | |
2450 | ||
2451 | /* | |
2452 | * Check how much room we have between alloc top & bottom (+/- a | |
fbafd728 | 2453 | * few pages), crop to 1MB, as this is our "chunk" size |
9b6b563c | 2454 | */ |
5827d416 | 2455 | room = alloc_top - alloc_bottom - 0x4000; |
9b6b563c PM |
2456 | if (room > DEVTREE_CHUNK_SIZE) |
2457 | room = DEVTREE_CHUNK_SIZE; | |
5827d416 | 2458 | prom_debug("starting device tree allocs at %x\n", alloc_bottom); |
9b6b563c PM |
2459 | |
2460 | /* Now try to claim that */ | |
2461 | mem_start = (unsigned long)alloc_up(room, PAGE_SIZE); | |
2462 | if (mem_start == 0) | |
2463 | prom_panic("Can't allocate initial device-tree chunk\n"); | |
966728dd | 2464 | mem_end = mem_start + room; |
9b6b563c PM |
2465 | |
2466 | /* Get root of tree */ | |
2467 | root = call_prom("peer", 1, 1, (phandle)0); | |
2468 | if (root == (phandle)0) | |
2469 | prom_panic ("couldn't get device tree root\n"); | |
2470 | ||
2471 | /* Build header and make room for mem rsv map */ | |
2472 | mem_start = _ALIGN(mem_start, 4); | |
2473 | hdr = make_room(&mem_start, &mem_end, | |
2474 | sizeof(struct boot_param_header), 4); | |
5827d416 | 2475 | dt_header_start = (unsigned long)hdr; |
9b6b563c PM |
2476 | rsvmap = make_room(&mem_start, &mem_end, sizeof(mem_reserve_map), 8); |
2477 | ||
2478 | /* Start of strings */ | |
2479 | mem_start = PAGE_ALIGN(mem_start); | |
5827d416 | 2480 | dt_string_start = mem_start; |
9b6b563c PM |
2481 | mem_start += 4; /* hole */ |
2482 | ||
2483 | /* Add "linux,phandle" in there, we'll need it */ | |
2484 | namep = make_room(&mem_start, &mem_end, 16, 1); | |
5827d416 | 2485 | strcpy(namep, "linux,phandle"); |
9b6b563c PM |
2486 | mem_start = (unsigned long)namep + strlen(namep) + 1; |
2487 | ||
2488 | /* Build string array */ | |
2489 | prom_printf("Building dt strings...\n"); | |
2490 | scan_dt_build_strings(root, &mem_start, &mem_end); | |
5827d416 | 2491 | dt_string_end = mem_start; |
9b6b563c PM |
2492 | |
2493 | /* Build structure */ | |
2494 | mem_start = PAGE_ALIGN(mem_start); | |
5827d416 | 2495 | dt_struct_start = mem_start; |
9b6b563c PM |
2496 | prom_printf("Building dt structure...\n"); |
2497 | scan_dt_build_struct(root, &mem_start, &mem_end); | |
2498 | dt_push_token(OF_DT_END, &mem_start, &mem_end); | |
5827d416 | 2499 | dt_struct_end = PAGE_ALIGN(mem_start); |
9b6b563c PM |
2500 | |
2501 | /* Finish header */ | |
493adffc BH |
2502 | hdr->boot_cpuid_phys = cpu_to_be32(prom.cpu); |
2503 | hdr->magic = cpu_to_be32(OF_DT_HEADER); | |
2504 | hdr->totalsize = cpu_to_be32(dt_struct_end - dt_header_start); | |
2505 | hdr->off_dt_struct = cpu_to_be32(dt_struct_start - dt_header_start); | |
2506 | hdr->off_dt_strings = cpu_to_be32(dt_string_start - dt_header_start); | |
2507 | hdr->dt_strings_size = cpu_to_be32(dt_string_end - dt_string_start); | |
2508 | hdr->off_mem_rsvmap = cpu_to_be32(((unsigned long)rsvmap) - dt_header_start); | |
2509 | hdr->version = cpu_to_be32(OF_DT_VERSION); | |
9b6b563c | 2510 | /* Version 16 is not backward compatible */ |
493adffc | 2511 | hdr->last_comp_version = cpu_to_be32(0x10); |
9b6b563c | 2512 | |
4d1f3f25 | 2513 | /* Copy the reserve map in */ |
5827d416 | 2514 | memcpy(rsvmap, mem_reserve_map, sizeof(mem_reserve_map)); |
9b6b563c PM |
2515 | |
2516 | #ifdef DEBUG_PROM | |
2517 | { | |
2518 | int i; | |
2519 | prom_printf("reserved memory map:\n"); | |
5827d416 | 2520 | for (i = 0; i < mem_reserve_cnt; i++) |
9b6b563c | 2521 | prom_printf(" %x - %x\n", |
493adffc BH |
2522 | be64_to_cpu(mem_reserve_map[i].base), |
2523 | be64_to_cpu(mem_reserve_map[i].size)); | |
9b6b563c PM |
2524 | } |
2525 | #endif | |
4d1f3f25 JX |
2526 | /* Bump mem_reserve_cnt to cause further reservations to fail |
2527 | * since it's too late. | |
2528 | */ | |
5827d416 | 2529 | mem_reserve_cnt = MEM_RESERVE_MAP_SIZE; |
9b6b563c PM |
2530 | |
2531 | prom_printf("Device tree strings 0x%x -> 0x%x\n", | |
5827d416 | 2532 | dt_string_start, dt_string_end); |
9b6b563c | 2533 | prom_printf("Device tree struct 0x%x -> 0x%x\n", |
5827d416 | 2534 | dt_struct_start, dt_struct_end); |
9b6b563c PM |
2535 | } |
2536 | ||
54f4ee18 HB |
2537 | #ifdef CONFIG_PPC_MAPLE |
2538 | /* PIBS Version 1.05.0000 04/26/2005 has an incorrect /ht/isa/ranges property. | |
2539 | * The values are bad, and it doesn't even have the right number of cells. */ | |
2540 | static void __init fixup_device_tree_maple(void) | |
9b6b563c | 2541 | { |
54f4ee18 | 2542 | phandle isa; |
980a6513 | 2543 | u32 rloc = 0x01002000; /* IO space; PCI device = 4 */ |
54f4ee18 | 2544 | u32 isa_ranges[6]; |
980a6513 BH |
2545 | char *name; |
2546 | ||
2547 | name = "/ht@0/isa@4"; | |
2548 | isa = call_prom("finddevice", 1, 1, ADDR(name)); | |
2549 | if (!PHANDLE_VALID(isa)) { | |
2550 | name = "/ht@0/isa@6"; | |
2551 | isa = call_prom("finddevice", 1, 1, ADDR(name)); | |
2552 | rloc = 0x01003000; /* IO space; PCI device = 6 */ | |
2553 | } | |
54f4ee18 HB |
2554 | if (!PHANDLE_VALID(isa)) |
2555 | return; | |
2556 | ||
980a6513 BH |
2557 | if (prom_getproplen(isa, "ranges") != 12) |
2558 | return; | |
54f4ee18 HB |
2559 | if (prom_getprop(isa, "ranges", isa_ranges, sizeof(isa_ranges)) |
2560 | == PROM_ERROR) | |
2561 | return; | |
2562 | ||
2563 | if (isa_ranges[0] != 0x1 || | |
2564 | isa_ranges[1] != 0xf4000000 || | |
2565 | isa_ranges[2] != 0x00010000) | |
2566 | return; | |
2567 | ||
980a6513 | 2568 | prom_printf("Fixing up bogus ISA range on Maple/Apache...\n"); |
54f4ee18 HB |
2569 | |
2570 | isa_ranges[0] = 0x1; | |
2571 | isa_ranges[1] = 0x0; | |
980a6513 | 2572 | isa_ranges[2] = rloc; |
54f4ee18 HB |
2573 | isa_ranges[3] = 0x0; |
2574 | isa_ranges[4] = 0x0; | |
2575 | isa_ranges[5] = 0x00010000; | |
980a6513 | 2576 | prom_setprop(isa, name, "ranges", |
54f4ee18 HB |
2577 | isa_ranges, sizeof(isa_ranges)); |
2578 | } | |
8f101a05 HC |
2579 | |
2580 | #define CPC925_MC_START 0xf8000000 | |
2581 | #define CPC925_MC_LENGTH 0x1000000 | |
2582 | /* The values for memory-controller don't have right number of cells */ | |
2583 | static void __init fixup_device_tree_maple_memory_controller(void) | |
2584 | { | |
2585 | phandle mc; | |
2586 | u32 mc_reg[4]; | |
2587 | char *name = "/hostbridge@f8000000"; | |
8f101a05 HC |
2588 | u32 ac, sc; |
2589 | ||
2590 | mc = call_prom("finddevice", 1, 1, ADDR(name)); | |
2591 | if (!PHANDLE_VALID(mc)) | |
2592 | return; | |
2593 | ||
2594 | if (prom_getproplen(mc, "reg") != 8) | |
2595 | return; | |
2596 | ||
5827d416 AB |
2597 | prom_getprop(prom.root, "#address-cells", &ac, sizeof(ac)); |
2598 | prom_getprop(prom.root, "#size-cells", &sc, sizeof(sc)); | |
8f101a05 HC |
2599 | if ((ac != 2) || (sc != 2)) |
2600 | return; | |
2601 | ||
2602 | if (prom_getprop(mc, "reg", mc_reg, sizeof(mc_reg)) == PROM_ERROR) | |
2603 | return; | |
2604 | ||
2605 | if (mc_reg[0] != CPC925_MC_START || mc_reg[1] != CPC925_MC_LENGTH) | |
2606 | return; | |
2607 | ||
2608 | prom_printf("Fixing up bogus hostbridge on Maple...\n"); | |
2609 | ||
2610 | mc_reg[0] = 0x0; | |
2611 | mc_reg[1] = CPC925_MC_START; | |
2612 | mc_reg[2] = 0x0; | |
2613 | mc_reg[3] = CPC925_MC_LENGTH; | |
2614 | prom_setprop(mc, name, "reg", mc_reg, sizeof(mc_reg)); | |
2615 | } | |
54f4ee18 HB |
2616 | #else |
2617 | #define fixup_device_tree_maple() | |
8f101a05 | 2618 | #define fixup_device_tree_maple_memory_controller() |
54f4ee18 HB |
2619 | #endif |
2620 | ||
e8c0acf9 | 2621 | #ifdef CONFIG_PPC_CHRP |
e4805922 OH |
2622 | /* |
2623 | * Pegasos and BriQ lacks the "ranges" property in the isa node | |
2624 | * Pegasos needs decimal IRQ 14/15, not hexadecimal | |
556ecf9b | 2625 | * Pegasos has the IDE configured in legacy mode, but advertised as native |
e4805922 | 2626 | */ |
e8c0acf9 BH |
2627 | static void __init fixup_device_tree_chrp(void) |
2628 | { | |
e4805922 OH |
2629 | phandle ph; |
2630 | u32 prop[6]; | |
26c5032e | 2631 | u32 rloc = 0x01006000; /* IO space; PCI device = 12 */ |
e8c0acf9 BH |
2632 | char *name; |
2633 | int rc; | |
2634 | ||
2635 | name = "/pci@80000000/isa@c"; | |
e4805922 OH |
2636 | ph = call_prom("finddevice", 1, 1, ADDR(name)); |
2637 | if (!PHANDLE_VALID(ph)) { | |
26c5032e | 2638 | name = "/pci@ff500000/isa@6"; |
e4805922 | 2639 | ph = call_prom("finddevice", 1, 1, ADDR(name)); |
26c5032e BH |
2640 | rloc = 0x01003000; /* IO space; PCI device = 6 */ |
2641 | } | |
e4805922 OH |
2642 | if (PHANDLE_VALID(ph)) { |
2643 | rc = prom_getproplen(ph, "ranges"); | |
2644 | if (rc == 0 || rc == PROM_ERROR) { | |
2645 | prom_printf("Fixing up missing ISA range on Pegasos...\n"); | |
2646 | ||
2647 | prop[0] = 0x1; | |
2648 | prop[1] = 0x0; | |
2649 | prop[2] = rloc; | |
2650 | prop[3] = 0x0; | |
2651 | prop[4] = 0x0; | |
2652 | prop[5] = 0x00010000; | |
2653 | prom_setprop(ph, name, "ranges", prop, sizeof(prop)); | |
2654 | } | |
2655 | } | |
e8c0acf9 | 2656 | |
e4805922 OH |
2657 | name = "/pci@80000000/ide@C,1"; |
2658 | ph = call_prom("finddevice", 1, 1, ADDR(name)); | |
2659 | if (PHANDLE_VALID(ph)) { | |
2660 | prom_printf("Fixing up IDE interrupt on Pegasos...\n"); | |
2661 | prop[0] = 14; | |
2662 | prop[1] = 0x0; | |
556ecf9b OH |
2663 | prom_setprop(ph, name, "interrupts", prop, 2*sizeof(u32)); |
2664 | prom_printf("Fixing up IDE class-code on Pegasos...\n"); | |
2665 | rc = prom_getprop(ph, "class-code", prop, sizeof(u32)); | |
2666 | if (rc == sizeof(u32)) { | |
2667 | prop[0] &= ~0x5; | |
2668 | prom_setprop(ph, name, "class-code", prop, sizeof(u32)); | |
2669 | } | |
e4805922 | 2670 | } |
e8c0acf9 BH |
2671 | } |
2672 | #else | |
2673 | #define fixup_device_tree_chrp() | |
2674 | #endif | |
2675 | ||
9b6b563c | 2676 | #if defined(CONFIG_PPC64) && defined(CONFIG_PPC_PMAC) |
54f4ee18 HB |
2677 | static void __init fixup_device_tree_pmac(void) |
2678 | { | |
9b6b563c PM |
2679 | phandle u3, i2c, mpic; |
2680 | u32 u3_rev; | |
2681 | u32 interrupts[2]; | |
2682 | u32 parent; | |
2683 | ||
2684 | /* Some G5s have a missing interrupt definition, fix it up here */ | |
2685 | u3 = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000")); | |
2686 | if (!PHANDLE_VALID(u3)) | |
2687 | return; | |
2688 | i2c = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000/i2c@f8001000")); | |
2689 | if (!PHANDLE_VALID(i2c)) | |
2690 | return; | |
2691 | mpic = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000/mpic@f8040000")); | |
2692 | if (!PHANDLE_VALID(mpic)) | |
2693 | return; | |
2694 | ||
2695 | /* check if proper rev of u3 */ | |
2696 | if (prom_getprop(u3, "device-rev", &u3_rev, sizeof(u3_rev)) | |
2697 | == PROM_ERROR) | |
2698 | return; | |
7d49697e | 2699 | if (u3_rev < 0x35 || u3_rev > 0x39) |
9b6b563c PM |
2700 | return; |
2701 | /* does it need fixup ? */ | |
2702 | if (prom_getproplen(i2c, "interrupts") > 0) | |
2703 | return; | |
2704 | ||
2705 | prom_printf("fixing up bogus interrupts for u3 i2c...\n"); | |
2706 | ||
2707 | /* interrupt on this revision of u3 is number 0 and level */ | |
2708 | interrupts[0] = 0; | |
2709 | interrupts[1] = 1; | |
a23414be PM |
2710 | prom_setprop(i2c, "/u3@0,f8000000/i2c@f8001000", "interrupts", |
2711 | &interrupts, sizeof(interrupts)); | |
9b6b563c | 2712 | parent = (u32)mpic; |
a23414be PM |
2713 | prom_setprop(i2c, "/u3@0,f8000000/i2c@f8001000", "interrupt-parent", |
2714 | &parent, sizeof(parent)); | |
9b6b563c | 2715 | } |
54f4ee18 HB |
2716 | #else |
2717 | #define fixup_device_tree_pmac() | |
2718 | #endif | |
9b6b563c | 2719 | |
88fd2a9d | 2720 | #ifdef CONFIG_PPC_EFIKA |
94d2dde7 GL |
2721 | /* |
2722 | * The MPC5200 FEC driver requires an phy-handle property to tell it how | |
2723 | * to talk to the phy. If the phy-handle property is missing, then this | |
2724 | * function is called to add the appropriate nodes and link it to the | |
2725 | * ethernet node. | |
2726 | */ | |
2727 | static void __init fixup_device_tree_efika_add_phy(void) | |
88fd2a9d | 2728 | { |
88fd2a9d SM |
2729 | u32 node; |
2730 | char prop[64]; | |
94d2dde7 | 2731 | int rv; |
88fd2a9d | 2732 | |
94d2dde7 GL |
2733 | /* Check if /builtin/ethernet exists - bail if it doesn't */ |
2734 | node = call_prom("finddevice", 1, 1, ADDR("/builtin/ethernet")); | |
88fd2a9d SM |
2735 | if (!PHANDLE_VALID(node)) |
2736 | return; | |
2737 | ||
94d2dde7 GL |
2738 | /* Check if the phy-handle property exists - bail if it does */ |
2739 | rv = prom_getprop(node, "phy-handle", prop, sizeof(prop)); | |
2740 | if (!rv) | |
88fd2a9d SM |
2741 | return; |
2742 | ||
94d2dde7 GL |
2743 | /* |
2744 | * At this point the ethernet device doesn't have a phy described. | |
2745 | * Now we need to add the missing phy node and linkage | |
2746 | */ | |
6f4347c9 | 2747 | |
94d2dde7 | 2748 | /* Check for an MDIO bus node - if missing then create one */ |
6f4347c9 OH |
2749 | node = call_prom("finddevice", 1, 1, ADDR("/builtin/mdio")); |
2750 | if (!PHANDLE_VALID(node)) { | |
2751 | prom_printf("Adding Ethernet MDIO node\n"); | |
2752 | call_prom("interpret", 1, 1, | |
2753 | " s\" /builtin\" find-device" | |
2754 | " new-device" | |
2755 | " 1 encode-int s\" #address-cells\" property" | |
2756 | " 0 encode-int s\" #size-cells\" property" | |
94d2dde7 GL |
2757 | " s\" mdio\" device-name" |
2758 | " s\" fsl,mpc5200b-mdio\" encode-string" | |
6f4347c9 OH |
2759 | " s\" compatible\" property" |
2760 | " 0xf0003000 0x400 reg" | |
2761 | " 0x2 encode-int" | |
2762 | " 0x5 encode-int encode+" | |
2763 | " 0x3 encode-int encode+" | |
2764 | " s\" interrupts\" property" | |
2765 | " finish-device"); | |
2766 | }; | |
2767 | ||
94d2dde7 GL |
2768 | /* Check for a PHY device node - if missing then create one and |
2769 | * give it's phandle to the ethernet node */ | |
2770 | node = call_prom("finddevice", 1, 1, | |
2771 | ADDR("/builtin/mdio/ethernet-phy")); | |
6f4347c9 OH |
2772 | if (!PHANDLE_VALID(node)) { |
2773 | prom_printf("Adding Ethernet PHY node\n"); | |
2774 | call_prom("interpret", 1, 1, | |
2775 | " s\" /builtin/mdio\" find-device" | |
2776 | " new-device" | |
2777 | " s\" ethernet-phy\" device-name" | |
2778 | " 0x10 encode-int s\" reg\" property" | |
2779 | " my-self" | |
2780 | " ihandle>phandle" | |
2781 | " finish-device" | |
2782 | " s\" /builtin/ethernet\" find-device" | |
2783 | " encode-int" | |
2784 | " s\" phy-handle\" property" | |
2785 | " device-end"); | |
2786 | } | |
94d2dde7 GL |
2787 | } |
2788 | ||
2789 | static void __init fixup_device_tree_efika(void) | |
2790 | { | |
2791 | int sound_irq[3] = { 2, 2, 0 }; | |
2792 | int bcomm_irq[3*16] = { 3,0,0, 3,1,0, 3,2,0, 3,3,0, | |
2793 | 3,4,0, 3,5,0, 3,6,0, 3,7,0, | |
2794 | 3,8,0, 3,9,0, 3,10,0, 3,11,0, | |
2795 | 3,12,0, 3,13,0, 3,14,0, 3,15,0 }; | |
2796 | u32 node; | |
2797 | char prop[64]; | |
2798 | int rv, len; | |
2799 | ||
2800 | /* Check if we're really running on a EFIKA */ | |
2801 | node = call_prom("finddevice", 1, 1, ADDR("/")); | |
2802 | if (!PHANDLE_VALID(node)) | |
2803 | return; | |
2804 | ||
2805 | rv = prom_getprop(node, "model", prop, sizeof(prop)); | |
2806 | if (rv == PROM_ERROR) | |
2807 | return; | |
2808 | if (strcmp(prop, "EFIKA5K2")) | |
2809 | return; | |
2810 | ||
2811 | prom_printf("Applying EFIKA device tree fixups\n"); | |
2812 | ||
2813 | /* Claiming to be 'chrp' is death */ | |
2814 | node = call_prom("finddevice", 1, 1, ADDR("/")); | |
2815 | rv = prom_getprop(node, "device_type", prop, sizeof(prop)); | |
2816 | if (rv != PROM_ERROR && (strcmp(prop, "chrp") == 0)) | |
2817 | prom_setprop(node, "/", "device_type", "efika", sizeof("efika")); | |
2818 | ||
7f4392cd DW |
2819 | /* CODEGEN,description is exposed in /proc/cpuinfo so |
2820 | fix that too */ | |
2821 | rv = prom_getprop(node, "CODEGEN,description", prop, sizeof(prop)); | |
2822 | if (rv != PROM_ERROR && (strstr(prop, "CHRP"))) | |
2823 | prom_setprop(node, "/", "CODEGEN,description", | |
2824 | "Efika 5200B PowerPC System", | |
2825 | sizeof("Efika 5200B PowerPC System")); | |
2826 | ||
94d2dde7 GL |
2827 | /* Fixup bestcomm interrupts property */ |
2828 | node = call_prom("finddevice", 1, 1, ADDR("/builtin/bestcomm")); | |
2829 | if (PHANDLE_VALID(node)) { | |
2830 | len = prom_getproplen(node, "interrupts"); | |
2831 | if (len == 12) { | |
2832 | prom_printf("Fixing bestcomm interrupts property\n"); | |
2833 | prom_setprop(node, "/builtin/bestcom", "interrupts", | |
2834 | bcomm_irq, sizeof(bcomm_irq)); | |
2835 | } | |
2836 | } | |
2837 | ||
2838 | /* Fixup sound interrupts property */ | |
2839 | node = call_prom("finddevice", 1, 1, ADDR("/builtin/sound")); | |
2840 | if (PHANDLE_VALID(node)) { | |
2841 | rv = prom_getprop(node, "interrupts", prop, sizeof(prop)); | |
2842 | if (rv == PROM_ERROR) { | |
2843 | prom_printf("Adding sound interrupts property\n"); | |
2844 | prom_setprop(node, "/builtin/sound", "interrupts", | |
2845 | sound_irq, sizeof(sound_irq)); | |
2846 | } | |
2847 | } | |
6f4347c9 | 2848 | |
94d2dde7 GL |
2849 | /* Make sure ethernet phy-handle property exists */ |
2850 | fixup_device_tree_efika_add_phy(); | |
88fd2a9d SM |
2851 | } |
2852 | #else | |
2853 | #define fixup_device_tree_efika() | |
2854 | #endif | |
2855 | ||
50246787 DS |
2856 | #ifdef CONFIG_PPC_PASEMI_NEMO |
2857 | /* | |
2858 | * CFE supplied on Nemo is broken in several ways, biggest | |
2859 | * problem is that it reassigns ISA interrupts to unused mpic ints. | |
2860 | * Add an interrupt-controller property for the io-bridge to use | |
2861 | * and correct the ints so we can attach them to an irq_domain | |
2862 | */ | |
2863 | static void __init fixup_device_tree_pasemi(void) | |
2864 | { | |
2865 | u32 interrupts[2], parent, rval, val = 0; | |
2866 | char *name, *pci_name; | |
2867 | phandle iob, node; | |
2868 | ||
2869 | /* Find the root pci node */ | |
2870 | name = "/pxp@0,e0000000"; | |
2871 | iob = call_prom("finddevice", 1, 1, ADDR(name)); | |
2872 | if (!PHANDLE_VALID(iob)) | |
2873 | return; | |
2874 | ||
2875 | /* check if interrupt-controller node set yet */ | |
2876 | if (prom_getproplen(iob, "interrupt-controller") !=PROM_ERROR) | |
2877 | return; | |
2878 | ||
2879 | prom_printf("adding interrupt-controller property for SB600...\n"); | |
2880 | ||
2881 | prom_setprop(iob, name, "interrupt-controller", &val, 0); | |
2882 | ||
2883 | pci_name = "/pxp@0,e0000000/pci@11"; | |
2884 | node = call_prom("finddevice", 1, 1, ADDR(pci_name)); | |
2885 | parent = ADDR(iob); | |
2886 | ||
2887 | for( ; prom_next_node(&node); ) { | |
2888 | /* scan each node for one with an interrupt */ | |
2889 | if (!PHANDLE_VALID(node)) | |
2890 | continue; | |
2891 | ||
2892 | rval = prom_getproplen(node, "interrupts"); | |
2893 | if (rval == 0 || rval == PROM_ERROR) | |
2894 | continue; | |
2895 | ||
2896 | prom_getprop(node, "interrupts", &interrupts, sizeof(interrupts)); | |
2897 | if ((interrupts[0] < 212) || (interrupts[0] > 222)) | |
2898 | continue; | |
2899 | ||
2900 | /* found a node, update both interrupts and interrupt-parent */ | |
2901 | if ((interrupts[0] >= 212) && (interrupts[0] <= 215)) | |
2902 | interrupts[0] -= 203; | |
2903 | if ((interrupts[0] >= 216) && (interrupts[0] <= 220)) | |
2904 | interrupts[0] -= 213; | |
2905 | if (interrupts[0] == 221) | |
2906 | interrupts[0] = 14; | |
2907 | if (interrupts[0] == 222) | |
2908 | interrupts[0] = 8; | |
2909 | ||
2910 | prom_setprop(node, pci_name, "interrupts", interrupts, | |
2911 | sizeof(interrupts)); | |
2912 | prom_setprop(node, pci_name, "interrupt-parent", &parent, | |
2913 | sizeof(parent)); | |
2914 | } | |
687e16bc DS |
2915 | |
2916 | /* | |
2917 | * The io-bridge has device_type set to 'io-bridge' change it to 'isa' | |
2918 | * so that generic isa-bridge code can add the SB600 and its on-board | |
2919 | * peripherals. | |
2920 | */ | |
2921 | name = "/pxp@0,e0000000/io-bridge@0"; | |
2922 | iob = call_prom("finddevice", 1, 1, ADDR(name)); | |
2923 | if (!PHANDLE_VALID(iob)) | |
2924 | return; | |
2925 | ||
2926 | /* device_type is already set, just change it. */ | |
2927 | ||
2928 | prom_printf("Changing device_type of SB600 node...\n"); | |
2929 | ||
2930 | prom_setprop(iob, name, "device_type", "isa", sizeof("isa")); | |
50246787 DS |
2931 | } |
2932 | #else /* !CONFIG_PPC_PASEMI_NEMO */ | |
2933 | static inline void fixup_device_tree_pasemi(void) { } | |
2934 | #endif | |
2935 | ||
54f4ee18 HB |
2936 | static void __init fixup_device_tree(void) |
2937 | { | |
2938 | fixup_device_tree_maple(); | |
8f101a05 | 2939 | fixup_device_tree_maple_memory_controller(); |
e8c0acf9 | 2940 | fixup_device_tree_chrp(); |
54f4ee18 | 2941 | fixup_device_tree_pmac(); |
88fd2a9d | 2942 | fixup_device_tree_efika(); |
50246787 | 2943 | fixup_device_tree_pasemi(); |
54f4ee18 | 2944 | } |
9b6b563c PM |
2945 | |
2946 | static void __init prom_find_boot_cpu(void) | |
2947 | { | |
493adffc | 2948 | __be32 rval; |
9b6b563c PM |
2949 | ihandle prom_cpu; |
2950 | phandle cpu_pkg; | |
2951 | ||
493adffc BH |
2952 | rval = 0; |
2953 | if (prom_getprop(prom.chosen, "cpu", &rval, sizeof(rval)) <= 0) | |
a575b807 | 2954 | return; |
493adffc | 2955 | prom_cpu = be32_to_cpu(rval); |
9b6b563c PM |
2956 | |
2957 | cpu_pkg = call_prom("instance-to-package", 1, 1, prom_cpu); | |
2958 | ||
af2b7fa1 DS |
2959 | if (!PHANDLE_VALID(cpu_pkg)) |
2960 | return; | |
2961 | ||
493adffc BH |
2962 | prom_getprop(cpu_pkg, "reg", &rval, sizeof(rval)); |
2963 | prom.cpu = be32_to_cpu(rval); | |
9b6b563c | 2964 | |
5827d416 | 2965 | prom_debug("Booting CPU hw index = %lu\n", prom.cpu); |
9b6b563c PM |
2966 | } |
2967 | ||
2968 | static void __init prom_check_initrd(unsigned long r3, unsigned long r4) | |
2969 | { | |
2970 | #ifdef CONFIG_BLK_DEV_INITRD | |
9b6b563c | 2971 | if (r3 && r4 && r4 != 0xdeadbeef) { |
493adffc | 2972 | __be64 val; |
9b6b563c | 2973 | |
5827d416 AB |
2974 | prom_initrd_start = is_kernel_addr(r3) ? __pa(r3) : r3; |
2975 | prom_initrd_end = prom_initrd_start + r4; | |
9b6b563c | 2976 | |
493adffc | 2977 | val = cpu_to_be64(prom_initrd_start); |
5827d416 | 2978 | prom_setprop(prom.chosen, "/chosen", "linux,initrd-start", |
a23414be | 2979 | &val, sizeof(val)); |
493adffc | 2980 | val = cpu_to_be64(prom_initrd_end); |
5827d416 | 2981 | prom_setprop(prom.chosen, "/chosen", "linux,initrd-end", |
a23414be | 2982 | &val, sizeof(val)); |
9b6b563c | 2983 | |
5827d416 AB |
2984 | reserve_mem(prom_initrd_start, |
2985 | prom_initrd_end - prom_initrd_start); | |
9b6b563c | 2986 | |
5827d416 AB |
2987 | prom_debug("initrd_start=0x%x\n", prom_initrd_start); |
2988 | prom_debug("initrd_end=0x%x\n", prom_initrd_end); | |
9b6b563c PM |
2989 | } |
2990 | #endif /* CONFIG_BLK_DEV_INITRD */ | |
2991 | } | |
2992 | ||
5ac47f7a AB |
2993 | #ifdef CONFIG_PPC64 |
2994 | #ifdef CONFIG_RELOCATABLE | |
2995 | static void reloc_toc(void) | |
2996 | { | |
2997 | } | |
2998 | ||
2999 | static void unreloc_toc(void) | |
3000 | { | |
3001 | } | |
3002 | #else | |
1674400a | 3003 | static void __reloc_toc(unsigned long offset, unsigned long nr_entries) |
5ac47f7a AB |
3004 | { |
3005 | unsigned long i; | |
1674400a AB |
3006 | unsigned long *toc_entry; |
3007 | ||
3008 | /* Get the start of the TOC by using r2 directly. */ | |
3009 | asm volatile("addi %0,2,-0x8000" : "=b" (toc_entry)); | |
5ac47f7a AB |
3010 | |
3011 | for (i = 0; i < nr_entries; i++) { | |
3012 | *toc_entry = *toc_entry + offset; | |
3013 | toc_entry++; | |
3014 | } | |
3015 | } | |
3016 | ||
3017 | static void reloc_toc(void) | |
3018 | { | |
3019 | unsigned long offset = reloc_offset(); | |
3020 | unsigned long nr_entries = | |
3021 | (__prom_init_toc_end - __prom_init_toc_start) / sizeof(long); | |
3022 | ||
1674400a | 3023 | __reloc_toc(offset, nr_entries); |
5ac47f7a AB |
3024 | |
3025 | mb(); | |
3026 | } | |
3027 | ||
3028 | static void unreloc_toc(void) | |
3029 | { | |
3030 | unsigned long offset = reloc_offset(); | |
3031 | unsigned long nr_entries = | |
3032 | (__prom_init_toc_end - __prom_init_toc_start) / sizeof(long); | |
3033 | ||
3034 | mb(); | |
3035 | ||
1674400a | 3036 | __reloc_toc(-offset, nr_entries); |
5ac47f7a AB |
3037 | } |
3038 | #endif | |
3039 | #endif | |
27f44888 | 3040 | |
9b6b563c PM |
3041 | /* |
3042 | * We enter here early on, when the Open Firmware prom is still | |
3043 | * handling exceptions and the MMU hash table for us. | |
3044 | */ | |
3045 | ||
3046 | unsigned long __init prom_init(unsigned long r3, unsigned long r4, | |
3047 | unsigned long pp, | |
549e8152 PM |
3048 | unsigned long r6, unsigned long r7, |
3049 | unsigned long kbase) | |
9b6b563c | 3050 | { |
9b6b563c | 3051 | unsigned long hdr; |
9b6b563c PM |
3052 | |
3053 | #ifdef CONFIG_PPC32 | |
549e8152 | 3054 | unsigned long offset = reloc_offset(); |
9b6b563c | 3055 | reloc_got2(offset); |
5ac47f7a AB |
3056 | #else |
3057 | reloc_toc(); | |
9b6b563c PM |
3058 | #endif |
3059 | ||
9b6b563c PM |
3060 | /* |
3061 | * First zero the BSS | |
3062 | */ | |
5827d416 | 3063 | memset(&__bss_start, 0, __bss_stop - __bss_start); |
9b6b563c PM |
3064 | |
3065 | /* | |
3066 | * Init interface to Open Firmware, get some node references, | |
3067 | * like /chosen | |
3068 | */ | |
3069 | prom_init_client_services(pp); | |
3070 | ||
3071 | /* | |
a23414be PM |
3072 | * See if this OF is old enough that we need to do explicit maps |
3073 | * and other workarounds | |
9b6b563c | 3074 | */ |
a23414be | 3075 | prom_find_mmu(); |
9b6b563c | 3076 | |
a575b807 | 3077 | /* |
a23414be | 3078 | * Init prom stdout device |
a575b807 | 3079 | */ |
a23414be | 3080 | prom_init_stdout(); |
a575b807 | 3081 | |
5827d416 | 3082 | prom_printf("Preparing to boot %s", linux_banner); |
e7943fbb | 3083 | |
9b6b563c PM |
3084 | /* |
3085 | * Get default machine type. At this point, we do not differentiate | |
3086 | * between pSeries SMP and pSeries LPAR | |
3087 | */ | |
5827d416 AB |
3088 | of_platform = prom_find_machine_type(); |
3089 | prom_printf("Detected machine type: %x\n", of_platform); | |
9b6b563c | 3090 | |
0f890c8d | 3091 | #ifndef CONFIG_NONSTATIC_KERNEL |
add60ef3 OH |
3092 | /* Bail if this is a kdump kernel. */ |
3093 | if (PHYSICAL_START > 0) | |
3094 | prom_panic("Error: You can't boot a kdump kernel from OF!\n"); | |
549e8152 | 3095 | #endif |
add60ef3 OH |
3096 | |
3097 | /* | |
3098 | * Check for an initrd | |
3099 | */ | |
3100 | prom_check_initrd(r3, r4); | |
3101 | ||
12cc9fd6 SJS |
3102 | /* |
3103 | * Do early parsing of command line | |
3104 | */ | |
3105 | early_cmdline_parse(); | |
3106 | ||
27f44888 | 3107 | #if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV) |
9b6b563c PM |
3108 | /* |
3109 | * On pSeries, inform the firmware about our capabilities | |
3110 | */ | |
5827d416 AB |
3111 | if (of_platform == PLATFORM_PSERIES || |
3112 | of_platform == PLATFORM_PSERIES_LPAR) | |
9b6b563c PM |
3113 | prom_send_capabilities(); |
3114 | #endif | |
3115 | ||
9b6b563c | 3116 | /* |
f3f66f59 | 3117 | * Copy the CPU hold code |
9b6b563c | 3118 | */ |
5827d416 | 3119 | if (of_platform != PLATFORM_POWERMAC) |
549e8152 | 3120 | copy_and_flush(0, kbase, 0x100, 0); |
9b6b563c | 3121 | |
9b6b563c PM |
3122 | /* |
3123 | * Initialize memory management within prom_init | |
3124 | */ | |
3125 | prom_init_mem(); | |
3126 | ||
3127 | /* | |
3128 | * Determine which cpu is actually running right _now_ | |
3129 | */ | |
3130 | prom_find_boot_cpu(); | |
3131 | ||
3132 | /* | |
3133 | * Initialize display devices | |
3134 | */ | |
3135 | prom_check_displays(); | |
3136 | ||
493adffc | 3137 | #if defined(CONFIG_PPC64) && defined(__BIG_ENDIAN__) |
9b6b563c PM |
3138 | /* |
3139 | * Initialize IOMMU (TCE tables) on pSeries. Do that before anything else | |
3140 | * that uses the allocator, we need to make sure we get the top of memory | |
3141 | * available for us here... | |
3142 | */ | |
5827d416 | 3143 | if (of_platform == PLATFORM_PSERIES) |
9b6b563c PM |
3144 | prom_initialize_tce_table(); |
3145 | #endif | |
3146 | ||
3147 | /* | |
27f44888 BH |
3148 | * On non-powermacs, try to instantiate RTAS. PowerMacs don't |
3149 | * have a usable RTAS implementation. | |
9b6b563c | 3150 | */ |
5827d416 AB |
3151 | if (of_platform != PLATFORM_POWERMAC && |
3152 | of_platform != PLATFORM_OPAL) | |
9b6b563c | 3153 | prom_instantiate_rtas(); |
27f44888 BH |
3154 | |
3155 | #ifdef CONFIG_PPC_POWERNV | |
493adffc | 3156 | if (of_platform == PLATFORM_OPAL) |
6e35d5da | 3157 | prom_instantiate_opal(); |
493adffc | 3158 | #endif /* CONFIG_PPC_POWERNV */ |
27f44888 | 3159 | |
4a727429 AL |
3160 | #ifdef CONFIG_PPC64 |
3161 | /* instantiate sml */ | |
3162 | prom_instantiate_sml(); | |
3163 | #endif | |
3164 | ||
27f44888 BH |
3165 | /* |
3166 | * On non-powermacs, put all CPUs in spin-loops. | |
3167 | * | |
3168 | * PowerMacs use a different mechanism to spin CPUs | |
dbe78b40 BH |
3169 | * |
3170 | * (This must be done after instanciating RTAS) | |
27f44888 | 3171 | */ |
5827d416 AB |
3172 | if (of_platform != PLATFORM_POWERMAC && |
3173 | of_platform != PLATFORM_OPAL) | |
27f44888 | 3174 | prom_hold_cpus(); |
9b6b563c PM |
3175 | |
3176 | /* | |
3177 | * Fill in some infos for use by the kernel later on | |
3178 | */ | |
493adffc BH |
3179 | if (prom_memory_limit) { |
3180 | __be64 val = cpu_to_be64(prom_memory_limit); | |
5827d416 | 3181 | prom_setprop(prom.chosen, "/chosen", "linux,memory-limit", |
493adffc BH |
3182 | &val, sizeof(val)); |
3183 | } | |
9b6b563c | 3184 | #ifdef CONFIG_PPC64 |
5827d416 AB |
3185 | if (prom_iommu_off) |
3186 | prom_setprop(prom.chosen, "/chosen", "linux,iommu-off", | |
a23414be | 3187 | NULL, 0); |
9b6b563c | 3188 | |
5827d416 AB |
3189 | if (prom_iommu_force_on) |
3190 | prom_setprop(prom.chosen, "/chosen", "linux,iommu-force-on", | |
a23414be | 3191 | NULL, 0); |
9b6b563c | 3192 | |
5827d416 AB |
3193 | if (prom_tce_alloc_start) { |
3194 | prom_setprop(prom.chosen, "/chosen", "linux,tce-alloc-start", | |
3195 | &prom_tce_alloc_start, | |
9b6b563c | 3196 | sizeof(prom_tce_alloc_start)); |
5827d416 AB |
3197 | prom_setprop(prom.chosen, "/chosen", "linux,tce-alloc-end", |
3198 | &prom_tce_alloc_end, | |
9b6b563c PM |
3199 | sizeof(prom_tce_alloc_end)); |
3200 | } | |
3201 | #endif | |
3202 | ||
3203 | /* | |
3204 | * Fixup any known bugs in the device-tree | |
3205 | */ | |
3206 | fixup_device_tree(); | |
3207 | ||
3208 | /* | |
3209 | * Now finally create the flattened device-tree | |
3210 | */ | |
1f8737aa | 3211 | prom_printf("copying OF device tree...\n"); |
9b6b563c PM |
3212 | flatten_device_tree(); |
3213 | ||
3825ac0e PM |
3214 | /* |
3215 | * in case stdin is USB and still active on IBM machines... | |
3216 | * Unfortunately quiesce crashes on some powermacs if we have | |
40dfef66 BH |
3217 | * closed stdin already (in particular the powerbook 101). It |
3218 | * appears that the OPAL version of OFW doesn't like it either. | |
3825ac0e | 3219 | */ |
5827d416 AB |
3220 | if (of_platform != PLATFORM_POWERMAC && |
3221 | of_platform != PLATFORM_OPAL) | |
3825ac0e | 3222 | prom_close_stdin(); |
9b6b563c PM |
3223 | |
3224 | /* | |
3225 | * Call OF "quiesce" method to shut down pending DMA's from | |
3226 | * devices etc... | |
3227 | */ | |
7e862d7e | 3228 | prom_printf("Quiescing Open Firmware ...\n"); |
9b6b563c PM |
3229 | call_prom("quiesce", 0, 0); |
3230 | ||
3231 | /* | |
3232 | * And finally, call the kernel passing it the flattened device | |
3233 | * tree and NULL as r5, thus triggering the new entry point which | |
3234 | * is common to us and kexec | |
3235 | */ | |
5827d416 | 3236 | hdr = dt_header_start; |
40dfef66 BH |
3237 | |
3238 | /* Don't print anything after quiesce under OPAL, it crashes OFW */ | |
5827d416 | 3239 | if (of_platform != PLATFORM_OPAL) { |
7d70c63c | 3240 | prom_printf("Booting Linux via __start() @ 0x%lx ...\n", kbase); |
40dfef66 BH |
3241 | prom_debug("->dt_header_start=0x%x\n", hdr); |
3242 | } | |
9b6b563c PM |
3243 | |
3244 | #ifdef CONFIG_PPC32 | |
3245 | reloc_got2(-offset); | |
5ac47f7a AB |
3246 | #else |
3247 | unreloc_toc(); | |
9b6b563c PM |
3248 | #endif |
3249 | ||
6e35d5da BH |
3250 | #ifdef CONFIG_PPC_EARLY_DEBUG_OPAL |
3251 | /* OPAL early debug gets the OPAL base & entry in r8 and r9 */ | |
3252 | __start(hdr, kbase, 0, 0, 0, | |
5827d416 | 3253 | prom_opal_base, prom_opal_entry); |
6e35d5da BH |
3254 | #else |
3255 | __start(hdr, kbase, 0, 0, 0, 0, 0); | |
3256 | #endif | |
9b6b563c PM |
3257 | |
3258 | return 0; | |
3259 | } |