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c021880a WD |
1 | /* |
2 | * (C) Copyright 2003 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * See file CREDITS for list of people who contributed to this | |
6 | * project. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License as | |
10 | * published by the Free Software Foundation; either version 2 of | |
11 | * the License, or (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
21 | * MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | #include <common.h> | |
25 | #include <command.h> | |
26 | #include <malloc.h> | |
27 | #include <devices.h> | |
561858ee | 28 | #include <timestamp.h> |
c021880a WD |
29 | #include <version.h> |
30 | #include <net.h> | |
31 | #include <environment.h> | |
e996bc33 | 32 | #include <nand.h> |
9d23fc58 | 33 | #include <onenand_uboot.h> |
89a1550e | 34 | #include <spi.h> |
c021880a | 35 | |
c75eba3b WD |
36 | DECLARE_GLOBAL_DATA_PTR; |
37 | ||
6d0f6bcf JCPV |
38 | #if ( ((CONFIG_ENV_ADDR+CONFIG_ENV_SIZE) < CONFIG_SYS_MONITOR_BASE) || \ |
39 | (CONFIG_ENV_ADDR >= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)) ) || \ | |
9314cee6 | 40 | defined(CONFIG_ENV_IS_IN_NVRAM) |
6d0f6bcf | 41 | #define TOTAL_MALLOC_LEN (CONFIG_SYS_MALLOC_LEN + CONFIG_ENV_SIZE) |
c021880a | 42 | #else |
6d0f6bcf | 43 | #define TOTAL_MALLOC_LEN CONFIG_SYS_MALLOC_LEN |
c021880a WD |
44 | #endif |
45 | ||
46 | #undef DEBUG | |
47 | ||
48 | extern int timer_init(void); | |
49 | ||
7cb22f97 WD |
50 | extern int incaip_set_cpuclk(void); |
51 | ||
3b57fe0a WD |
52 | extern ulong uboot_end_data; |
53 | extern ulong uboot_end; | |
54 | ||
55 | ulong monitor_flash_len; | |
56 | ||
c021880a | 57 | const char version_string[] = |
561858ee | 58 | U_BOOT_VERSION" (" U_BOOT_DATE " - " U_BOOT_TIME ")"; |
c021880a WD |
59 | |
60 | static char *failed = "*** failed ***\n"; | |
61 | ||
62 | /* | |
63 | * Begin and End of memory area for malloc(), and current "brk" | |
64 | */ | |
65 | static ulong mem_malloc_start; | |
66 | static ulong mem_malloc_end; | |
67 | static ulong mem_malloc_brk; | |
68 | ||
5c15010e JCPV |
69 | /* |
70 | * mips_io_port_base is the begin of the address space to which x86 style | |
71 | * I/O ports are mapped. | |
72 | */ | |
73 | unsigned long mips_io_port_base = -1; | |
c021880a | 74 | |
db08ecaa SR |
75 | int __board_early_init_f(void) |
76 | { | |
77 | /* | |
78 | * Nothing to do in this dummy implementation | |
79 | */ | |
80 | return 0; | |
81 | } | |
82 | int board_early_init_f(void) __attribute__((weak, alias("__board_early_init_f"))); | |
83 | ||
c021880a WD |
84 | /* |
85 | * The Malloc area is immediately below the monitor copy in DRAM | |
86 | */ | |
87 | static void mem_malloc_init (void) | |
88 | { | |
6d0f6bcf | 89 | ulong dest_addr = CONFIG_SYS_MONITOR_BASE + gd->reloc_off; |
c021880a WD |
90 | |
91 | mem_malloc_end = dest_addr; | |
92 | mem_malloc_start = dest_addr - TOTAL_MALLOC_LEN; | |
93 | mem_malloc_brk = mem_malloc_start; | |
94 | ||
95 | memset ((void *) mem_malloc_start, | |
96 | 0, | |
97 | mem_malloc_end - mem_malloc_start); | |
98 | } | |
99 | ||
100 | void *sbrk (ptrdiff_t increment) | |
101 | { | |
102 | ulong old = mem_malloc_brk; | |
103 | ulong new = old + increment; | |
104 | ||
105 | if ((new < mem_malloc_start) || (new > mem_malloc_end)) { | |
106 | return (NULL); | |
107 | } | |
108 | mem_malloc_brk = new; | |
109 | return ((void *) old); | |
110 | } | |
111 | ||
112 | ||
113 | static int init_func_ram (void) | |
114 | { | |
c021880a WD |
115 | #ifdef CONFIG_BOARD_TYPES |
116 | int board_type = gd->board_type; | |
117 | #else | |
118 | int board_type = 0; /* use dummy arg */ | |
119 | #endif | |
120 | puts ("DRAM: "); | |
121 | ||
122 | if ((gd->ram_size = initdram (board_type)) > 0) { | |
123 | print_size (gd->ram_size, "\n"); | |
124 | return (0); | |
125 | } | |
126 | puts (failed); | |
127 | return (1); | |
128 | } | |
129 | ||
130 | static int display_banner(void) | |
131 | { | |
132 | ||
133 | printf ("\n\n%s\n\n", version_string); | |
134 | return (0); | |
135 | } | |
136 | ||
6d0f6bcf | 137 | #ifndef CONFIG_SYS_NO_FLASH |
c021880a WD |
138 | static void display_flash_config(ulong size) |
139 | { | |
140 | puts ("Flash: "); | |
141 | print_size (size, "\n"); | |
142 | } | |
beeccf7a | 143 | #endif |
c021880a WD |
144 | |
145 | static int init_baudrate (void) | |
146 | { | |
f013dacf | 147 | char tmp[64]; /* long enough for environment variables */ |
c021880a WD |
148 | int i = getenv_r ("baudrate", tmp, sizeof (tmp)); |
149 | ||
150 | gd->baudrate = (i > 0) | |
151 | ? (int) simple_strtoul (tmp, NULL, 10) | |
152 | : CONFIG_BAUDRATE; | |
153 | ||
154 | return (0); | |
155 | } | |
156 | ||
157 | ||
158 | /* | |
159 | * Breath some life into the board... | |
160 | * | |
161 | * The first part of initialization is running from Flash memory; | |
162 | * its main purpose is to initialize the RAM so that we | |
163 | * can relocate the monitor code to RAM. | |
164 | */ | |
165 | ||
166 | /* | |
167 | * All attempts to come up with a "common" initialization sequence | |
168 | * that works for all boards and architectures failed: some of the | |
169 | * requirements are just _too_ different. To get rid of the resulting | |
170 | * mess of board dependend #ifdef'ed code we now make the whole | |
171 | * initialization sequence configurable to the user. | |
172 | * | |
173 | * The requirements for any new initalization function is simple: it | |
174 | * receives a pointer to the "global data" structure as it's only | |
175 | * argument, and returns an integer return code, where 0 means | |
176 | * "continue" and != 0 means "fatal error, hang the system". | |
177 | */ | |
178 | typedef int (init_fnc_t) (void); | |
179 | ||
180 | init_fnc_t *init_sequence[] = { | |
db08ecaa | 181 | board_early_init_f, |
c021880a WD |
182 | timer_init, |
183 | env_init, /* initialize environment */ | |
7cb22f97 WD |
184 | #ifdef CONFIG_INCA_IP |
185 | incaip_set_cpuclk, /* set cpu clock according to environment variable */ | |
186 | #endif | |
c021880a WD |
187 | init_baudrate, /* initialze baudrate settings */ |
188 | serial_init, /* serial communications setup */ | |
189 | console_init_f, | |
190 | display_banner, /* say that we are here */ | |
85ec0bcc | 191 | checkboard, |
c021880a WD |
192 | init_func_ram, |
193 | NULL, | |
194 | }; | |
195 | ||
196 | ||
197 | void board_init_f(ulong bootflag) | |
198 | { | |
c021880a WD |
199 | gd_t gd_data, *id; |
200 | bd_t *bd; | |
201 | init_fnc_t **init_fnc_ptr; | |
6d0f6bcf | 202 | ulong addr, addr_sp, len = (ulong)&uboot_end - CONFIG_SYS_MONITOR_BASE; |
c75eba3b | 203 | ulong *s; |
3e38691e WD |
204 | #ifdef CONFIG_PURPLE |
205 | void copy_code (ulong); | |
206 | #endif | |
c021880a | 207 | |
69459791 WD |
208 | /* Pointer is writable since we allocated a register for it. |
209 | */ | |
c021880a | 210 | gd = &gd_data; |
93f6a677 WD |
211 | /* compiler optimization barrier needed for GCC >= 3.4 */ |
212 | __asm__ __volatile__("": : :"memory"); | |
213 | ||
27b207fd | 214 | memset ((void *)gd, 0, sizeof (gd_t)); |
c021880a WD |
215 | |
216 | for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) { | |
217 | if ((*init_fnc_ptr)() != 0) { | |
218 | hang (); | |
219 | } | |
220 | } | |
221 | ||
222 | /* | |
223 | * Now that we have DRAM mapped and working, we can | |
224 | * relocate the code and continue running from DRAM. | |
225 | */ | |
6d0f6bcf | 226 | addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size; |
c021880a | 227 | |
69459791 WD |
228 | /* We can reserve some RAM "on top" here. |
229 | */ | |
c021880a | 230 | |
69459791 WD |
231 | /* round down to next 4 kB limit. |
232 | */ | |
c021880a | 233 | addr &= ~(4096 - 1); |
69459791 | 234 | debug ("Top of RAM usable for U-Boot at: %08lx\n", addr); |
8bde7f77 | 235 | |
69459791 WD |
236 | /* Reserve memory for U-Boot code, data & bss |
237 | * round down to next 16 kB limit | |
238 | */ | |
c021880a | 239 | addr -= len; |
3b57fe0a | 240 | addr &= ~(16 * 1024 - 1); |
c021880a | 241 | |
69459791 | 242 | debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr); |
c021880a | 243 | |
69459791 WD |
244 | /* Reserve memory for malloc() arena. |
245 | */ | |
c021880a | 246 | addr_sp = addr - TOTAL_MALLOC_LEN; |
69459791 | 247 | debug ("Reserving %dk for malloc() at: %08lx\n", |
c021880a | 248 | TOTAL_MALLOC_LEN >> 10, addr_sp); |
c021880a WD |
249 | |
250 | /* | |
251 | * (permanently) allocate a Board Info struct | |
252 | * and a permanent copy of the "global" data | |
253 | */ | |
254 | addr_sp -= sizeof(bd_t); | |
255 | bd = (bd_t *)addr_sp; | |
256 | gd->bd = bd; | |
b64f190b | 257 | debug ("Reserving %zu Bytes for Board Info at: %08lx\n", |
c021880a | 258 | sizeof(bd_t), addr_sp); |
69459791 | 259 | |
c021880a WD |
260 | addr_sp -= sizeof(gd_t); |
261 | id = (gd_t *)addr_sp; | |
b64f190b | 262 | debug ("Reserving %zu Bytes for Global Data at: %08lx\n", |
c021880a | 263 | sizeof (gd_t), addr_sp); |
c021880a | 264 | |
beeccf7a | 265 | /* Reserve memory for boot params. |
69459791 | 266 | */ |
6d0f6bcf | 267 | addr_sp -= CONFIG_SYS_BOOTPARAMS_LEN; |
c021880a | 268 | bd->bi_boot_params = addr_sp; |
69459791 | 269 | debug ("Reserving %dk for boot params() at: %08lx\n", |
6d0f6bcf | 270 | CONFIG_SYS_BOOTPARAMS_LEN >> 10, addr_sp); |
c021880a WD |
271 | |
272 | /* | |
273 | * Finally, we set up a new (bigger) stack. | |
274 | * | |
275 | * Leave some safety gap for SP, force alignment on 16 byte boundary | |
276 | * Clear initial stack frame | |
277 | */ | |
278 | addr_sp -= 16; | |
279 | addr_sp &= ~0xF; | |
c75eba3b WD |
280 | s = (ulong *)addr_sp; |
281 | *s-- = 0; | |
282 | *s-- = 0; | |
283 | addr_sp = (ulong)s; | |
69459791 WD |
284 | debug ("Stack Pointer at: %08lx\n", addr_sp); |
285 | ||
c021880a WD |
286 | /* |
287 | * Save local variables to board info struct | |
288 | */ | |
6d0f6bcf | 289 | bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of DRAM memory */ |
c021880a WD |
290 | bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */ |
291 | bd->bi_baudrate = gd->baudrate; /* Console Baudrate */ | |
292 | ||
27b207fd | 293 | memcpy (id, (void *)gd, sizeof (gd_t)); |
3e38691e WD |
294 | |
295 | /* On the purple board we copy the code in a special way | |
296 | * in order to solve flash problems | |
297 | */ | |
298 | #ifdef CONFIG_PURPLE | |
299 | copy_code(addr); | |
300 | #endif | |
301 | ||
c021880a WD |
302 | relocate_code (addr_sp, id, addr); |
303 | ||
304 | /* NOTREACHED - relocate_code() does not return */ | |
305 | } | |
306 | /************************************************************************ | |
307 | * | |
308 | * This is the next part if the initialization sequence: we are now | |
309 | * running from RAM and have a "normal" C environment, i. e. global | |
310 | * data can be written, BSS has been cleared, the stack size in not | |
311 | * that critical any more, etc. | |
312 | * | |
313 | ************************************************************************ | |
314 | */ | |
315 | ||
316 | void board_init_r (gd_t *id, ulong dest_addr) | |
317 | { | |
c021880a | 318 | cmd_tbl_t *cmdtp; |
6d0f6bcf | 319 | #ifndef CONFIG_SYS_NO_FLASH |
c021880a | 320 | ulong size; |
beeccf7a | 321 | #endif |
c021880a | 322 | extern void malloc_bin_reloc (void); |
93f6d725 | 323 | #ifndef CONFIG_ENV_IS_NOWHERE |
c021880a WD |
324 | extern char * env_name_spec; |
325 | #endif | |
326 | char *s, *e; | |
327 | bd_t *bd; | |
328 | int i; | |
329 | ||
330 | gd = id; | |
331 | gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */ | |
332 | ||
69459791 | 333 | debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr); |
c021880a | 334 | |
6d0f6bcf | 335 | gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE; |
c021880a | 336 | |
3b57fe0a WD |
337 | monitor_flash_len = (ulong)&uboot_end_data - dest_addr; |
338 | ||
c021880a WD |
339 | /* |
340 | * We have to relocate the command table manually | |
341 | */ | |
beeccf7a | 342 | for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) { |
c021880a WD |
343 | ulong addr; |
344 | ||
345 | addr = (ulong) (cmdtp->cmd) + gd->reloc_off; | |
346 | #if 0 | |
347 | printf ("Command \"%s\": 0x%08lx => 0x%08lx\n", | |
348 | cmdtp->name, (ulong) (cmdtp->cmd), addr); | |
349 | #endif | |
350 | cmdtp->cmd = | |
351 | (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr; | |
352 | ||
353 | addr = (ulong)(cmdtp->name) + gd->reloc_off; | |
354 | cmdtp->name = (char *)addr; | |
355 | ||
356 | if (cmdtp->usage) { | |
357 | addr = (ulong)(cmdtp->usage) + gd->reloc_off; | |
358 | cmdtp->usage = (char *)addr; | |
359 | } | |
6d0f6bcf | 360 | #ifdef CONFIG_SYS_LONGHELP |
c021880a WD |
361 | if (cmdtp->help) { |
362 | addr = (ulong)(cmdtp->help) + gd->reloc_off; | |
363 | cmdtp->help = (char *)addr; | |
364 | } | |
365 | #endif | |
366 | } | |
367 | /* there are some other pointer constants we must deal with */ | |
93f6d725 | 368 | #ifndef CONFIG_ENV_IS_NOWHERE |
c021880a WD |
369 | env_name_spec += gd->reloc_off; |
370 | #endif | |
8bde7f77 | 371 | |
beeccf7a JCPV |
372 | bd = gd->bd; |
373 | ||
6d0f6bcf | 374 | #ifndef CONFIG_SYS_NO_FLASH |
c021880a WD |
375 | /* configure available FLASH banks */ |
376 | size = flash_init(); | |
377 | display_flash_config (size); | |
beeccf7a JCPV |
378 | bd->bi_flashsize = size; |
379 | #endif | |
c021880a | 380 | |
6d0f6bcf JCPV |
381 | bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; |
382 | #if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE | |
3b57fe0a | 383 | bd->bi_flashoffset = monitor_flash_len; /* reserved area for U-Boot */ |
c021880a WD |
384 | #else |
385 | bd->bi_flashoffset = 0; | |
386 | #endif | |
387 | ||
388 | /* initialize malloc() area */ | |
389 | mem_malloc_init(); | |
390 | malloc_bin_reloc(); | |
391 | ||
9d23fc58 SR |
392 | #ifdef CONFIG_CMD_NAND |
393 | puts ("NAND: "); | |
394 | nand_init (); /* go init the NAND */ | |
395 | #endif | |
396 | ||
397 | #if defined(CONFIG_CMD_ONENAND) | |
398 | onenand_init(); | |
399 | #endif | |
400 | ||
c021880a WD |
401 | /* relocate environment function pointers etc. */ |
402 | env_relocate(); | |
403 | ||
404 | /* board MAC address */ | |
405 | s = getenv ("ethaddr"); | |
406 | for (i = 0; i < 6; ++i) { | |
407 | bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0; | |
408 | if (s) | |
409 | s = (*e) ? e + 1 : e; | |
410 | } | |
411 | ||
412 | /* IP Address */ | |
413 | bd->bi_ip_addr = getenv_IPaddr("ipaddr"); | |
414 | ||
f4863a7a WD |
415 | #if defined(CONFIG_PCI) |
416 | /* | |
417 | * Do pci configuration | |
418 | */ | |
419 | pci_init(); | |
420 | #endif | |
421 | ||
c021880a WD |
422 | /** leave this here (after malloc(), environment and PCI are working) **/ |
423 | /* Initialize devices */ | |
424 | devices_init (); | |
425 | ||
27b207fd | 426 | jumptable_init (); |
c021880a WD |
427 | |
428 | /* Initialize the console (after the relocation and devices init) */ | |
429 | console_init_r (); | |
430 | /** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **/ | |
431 | ||
3e38691e WD |
432 | /* Initialize from environment */ |
433 | if ((s = getenv ("loadaddr")) != NULL) { | |
434 | load_addr = simple_strtoul (s, NULL, 16); | |
435 | } | |
7def6b34 | 436 | #if defined(CONFIG_CMD_NET) |
3e38691e WD |
437 | if ((s = getenv ("bootfile")) != NULL) { |
438 | copy_filename (BootFile, s, sizeof (BootFile)); | |
439 | } | |
b3aff0cb | 440 | #endif |
3e38691e | 441 | |
89a1550e JM |
442 | #ifdef CONFIG_CMD_SPI |
443 | puts ("SPI: "); | |
444 | spi_init (); /* go init the SPI */ | |
445 | puts ("ready\n"); | |
446 | #endif | |
447 | ||
3e38691e WD |
448 | #if defined(CONFIG_MISC_INIT_R) |
449 | /* miscellaneous platform dependent initialisations */ | |
450 | misc_init_r (); | |
451 | #endif | |
452 | ||
7def6b34 | 453 | #if defined(CONFIG_CMD_NET) |
63ff004c | 454 | #if defined(CONFIG_NET_MULTI) |
c021880a | 455 | puts ("Net: "); |
63ff004c | 456 | #endif |
c021880a WD |
457 | eth_initialize(gd->bd); |
458 | #endif | |
459 | ||
460 | /* main_loop() can return to retry autoboot, if so just run it again. */ | |
461 | for (;;) { | |
462 | main_loop (); | |
463 | } | |
464 | ||
465 | /* NOTREACHED - no way out of command loop except booting */ | |
466 | } | |
467 | ||
468 | void hang (void) | |
469 | { | |
470 | puts ("### ERROR ### Please RESET the board ###\n"); | |
471 | for (;;); | |
472 | } |