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b97a2a0a MB |
1 | /* |
2 | * (C) Copyright 2008 Semihalf | |
3 | * | |
4 | * (C) Copyright 2000-2006 | |
5 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
6 | * | |
7 | * See file CREDITS for list of people who contributed to this | |
8 | * project. | |
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 as | |
12 | * published by the Free Software Foundation; either version 2 of | |
13 | * the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
23 | * MA 02111-1307 USA | |
24 | */ | |
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25 | |
26 | #define DEBUG | |
27 | ||
b97a2a0a | 28 | #ifndef USE_HOSTCC |
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29 | #include <common.h> |
30 | #include <watchdog.h> | |
31 | ||
32 | #ifdef CONFIG_SHOW_BOOT_PROGRESS | |
33 | #include <status_led.h> | |
34 | #endif | |
35 | ||
36 | #ifdef CONFIG_HAS_DATAFLASH | |
37 | #include <dataflash.h> | |
38 | #endif | |
39 | ||
ceaed2b1 MB |
40 | #ifdef CONFIG_LOGBUFFER |
41 | #include <logbuff.h> | |
42 | #endif | |
43 | ||
5ad03eb3 | 44 | extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); |
b6b0fe64 MB |
45 | |
46 | #ifdef CONFIG_CMD_BDI | |
47 | extern int do_bdinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); | |
48 | #endif | |
49 | ||
50 | DECLARE_GLOBAL_DATA_PTR; | |
b97a2a0a | 51 | #else |
5ad03eb3 | 52 | #include "mkimage.h" |
b6b0fe64 | 53 | #endif /* USE_HOSTCC*/ |
b97a2a0a MB |
54 | |
55 | #include <image.h> | |
56 | ||
57 | unsigned long crc32 (unsigned long, const unsigned char *, unsigned int); | |
58 | ||
59 | int image_check_hcrc (image_header_t *hdr) | |
60 | { | |
61 | ulong hcrc; | |
62 | ulong len = image_get_header_size (); | |
63 | image_header_t header; | |
64 | ||
65 | /* Copy header so we can blank CRC field for re-calculation */ | |
66 | memmove (&header, (char *)hdr, image_get_header_size ()); | |
67 | image_set_hcrc (&header, 0); | |
68 | ||
69 | hcrc = crc32 (0, (unsigned char *)&header, len); | |
70 | ||
71 | return (hcrc == image_get_hcrc (hdr)); | |
72 | } | |
73 | ||
74 | int image_check_dcrc (image_header_t *hdr) | |
75 | { | |
76 | ulong data = image_get_data (hdr); | |
77 | ulong len = image_get_data_size (hdr); | |
78 | ulong dcrc = crc32 (0, (unsigned char *)data, len); | |
79 | ||
80 | return (dcrc == image_get_dcrc (hdr)); | |
81 | } | |
82 | ||
af13cdbc | 83 | #ifndef USE_HOSTCC |
b97a2a0a MB |
84 | int image_check_dcrc_wd (image_header_t *hdr, ulong chunksz) |
85 | { | |
86 | ulong dcrc = 0; | |
87 | ulong len = image_get_data_size (hdr); | |
88 | ulong data = image_get_data (hdr); | |
89 | ||
90 | #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG) | |
91 | ulong cdata = data; | |
92 | ulong edata = cdata + len; | |
93 | ||
94 | while (cdata < edata) { | |
95 | ulong chunk = edata - cdata; | |
96 | ||
97 | if (chunk > chunksz) | |
98 | chunk = chunksz; | |
99 | dcrc = crc32 (dcrc, (unsigned char *)cdata, chunk); | |
100 | cdata += chunk; | |
101 | ||
102 | WATCHDOG_RESET (); | |
103 | } | |
104 | #else | |
105 | dcrc = crc32 (0, (unsigned char *)data, len); | |
106 | #endif | |
107 | ||
108 | return (dcrc == image_get_dcrc (hdr)); | |
109 | } | |
110 | ||
111 | int getenv_verify (void) | |
112 | { | |
113 | char *s = getenv ("verify"); | |
114 | return (s && (*s == 'n')) ? 0 : 1; | |
115 | } | |
af13cdbc MB |
116 | |
117 | void memmove_wd (void *to, void *from, size_t len, ulong chunksz) | |
118 | { | |
119 | #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG) | |
120 | while (len > 0) { | |
121 | size_t tail = (len > chunksz) ? chunksz : len; | |
122 | WATCHDOG_RESET (); | |
123 | memmove (to, from, tail); | |
124 | to += tail; | |
125 | from += tail; | |
126 | len -= tail; | |
127 | } | |
128 | #else /* !(CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG) */ | |
129 | memmove (to, from, len); | |
130 | #endif /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */ | |
131 | } | |
132 | #endif /* USE_HOSTCC */ | |
f13e7b2e MB |
133 | |
134 | /** | |
135 | * image_multi_count - get component (sub-image) count | |
136 | * @hdr: pointer to the header of the multi component image | |
137 | * | |
138 | * image_multi_count() returns number of components in a multi | |
139 | * component image. | |
140 | * | |
141 | * Note: no checking of the image type is done, caller must pass | |
142 | * a valid multi component image. | |
143 | * | |
144 | * returns: | |
145 | * number of components | |
146 | */ | |
147 | ulong image_multi_count (image_header_t *hdr) | |
148 | { | |
149 | ulong i, count = 0; | |
150 | ulong *size; | |
151 | ||
152 | /* get start of the image payload, which in case of multi | |
153 | * component images that points to a table of component sizes */ | |
154 | size = (ulong *)image_get_data (hdr); | |
155 | ||
156 | /* count non empty slots */ | |
157 | for (i = 0; size[i]; ++i) | |
158 | count++; | |
159 | ||
160 | return count; | |
161 | } | |
162 | ||
163 | /** | |
164 | * image_multi_getimg - get component data address and size | |
165 | * @hdr: pointer to the header of the multi component image | |
166 | * @idx: index of the requested component | |
167 | * @data: pointer to a ulong variable, will hold component data address | |
168 | * @len: pointer to a ulong variable, will hold component size | |
169 | * | |
170 | * image_multi_getimg() returns size and data address for the requested | |
171 | * component in a multi component image. | |
172 | * | |
173 | * Note: no checking of the image type is done, caller must pass | |
174 | * a valid multi component image. | |
175 | * | |
176 | * returns: | |
177 | * data address and size of the component, if idx is valid | |
178 | * 0 in data and len, if idx is out of range | |
179 | */ | |
180 | void image_multi_getimg (image_header_t *hdr, ulong idx, | |
181 | ulong *data, ulong *len) | |
182 | { | |
183 | int i; | |
184 | ulong *size; | |
185 | ulong offset, tail, count, img_data; | |
186 | ||
187 | /* get number of component */ | |
188 | count = image_multi_count (hdr); | |
189 | ||
190 | /* get start of the image payload, which in case of multi | |
191 | * component images that points to a table of component sizes */ | |
192 | size = (ulong *)image_get_data (hdr); | |
193 | ||
194 | /* get address of the proper component data start, which means | |
195 | * skipping sizes table (add 1 for last, null entry) */ | |
196 | img_data = image_get_data (hdr) + (count + 1) * sizeof (ulong); | |
197 | ||
198 | if (idx < count) { | |
199 | *len = size[idx]; | |
200 | offset = 0; | |
201 | tail = 0; | |
202 | ||
203 | /* go over all indices preceding requested component idx */ | |
204 | for (i = 0; i < idx; i++) { | |
205 | /* add up i-th component size */ | |
206 | offset += size[i]; | |
207 | ||
208 | /* add up alignment for i-th component */ | |
209 | tail += (4 - size[i] % 4); | |
210 | } | |
211 | ||
212 | /* calculate idx-th component data address */ | |
213 | *data = img_data + offset + tail; | |
214 | } else { | |
215 | *len = 0; | |
216 | *data = 0; | |
217 | } | |
218 | } | |
42b73e8e MB |
219 | |
220 | #ifndef USE_HOSTCC | |
221 | const char* image_get_os_name (uint8_t os) | |
222 | { | |
223 | const char *name; | |
224 | ||
225 | switch (os) { | |
226 | case IH_OS_INVALID: name = "Invalid OS"; break; | |
227 | case IH_OS_NETBSD: name = "NetBSD"; break; | |
228 | case IH_OS_LINUX: name = "Linux"; break; | |
229 | case IH_OS_VXWORKS: name = "VxWorks"; break; | |
230 | case IH_OS_QNX: name = "QNX"; break; | |
231 | case IH_OS_U_BOOT: name = "U-Boot"; break; | |
232 | case IH_OS_RTEMS: name = "RTEMS"; break; | |
233 | #ifdef CONFIG_ARTOS | |
234 | case IH_OS_ARTOS: name = "ARTOS"; break; | |
235 | #endif | |
236 | #ifdef CONFIG_LYNXKDI | |
237 | case IH_OS_LYNXOS: name = "LynxOS"; break; | |
238 | #endif | |
239 | default: name = "Unknown OS"; break; | |
240 | } | |
241 | ||
242 | return name; | |
243 | } | |
244 | ||
245 | const char* image_get_arch_name (uint8_t arch) | |
246 | { | |
247 | const char *name; | |
248 | ||
249 | switch (arch) { | |
250 | case IH_ARCH_INVALID: name = "Invalid Architecture"; break; | |
251 | case IH_ARCH_ALPHA: name = "Alpha"; break; | |
252 | case IH_ARCH_ARM: name = "ARM"; break; | |
253 | case IH_ARCH_AVR32: name = "AVR32"; break; | |
254 | case IH_ARCH_BLACKFIN: name = "Blackfin"; break; | |
255 | case IH_ARCH_I386: name = "Intel x86"; break; | |
256 | case IH_ARCH_IA64: name = "IA64"; break; | |
257 | case IH_ARCH_M68K: name = "M68K"; break; | |
258 | case IH_ARCH_MICROBLAZE:name = "Microblaze"; break; | |
259 | case IH_ARCH_MIPS64: name = "MIPS 64 Bit"; break; | |
260 | case IH_ARCH_MIPS: name = "MIPS"; break; | |
261 | case IH_ARCH_NIOS2: name = "Nios-II"; break; | |
262 | case IH_ARCH_NIOS: name = "Nios"; break; | |
263 | case IH_ARCH_PPC: name = "PowerPC"; break; | |
264 | case IH_ARCH_S390: name = "IBM S390"; break; | |
265 | case IH_ARCH_SH: name = "SuperH"; break; | |
266 | case IH_ARCH_SPARC64: name = "SPARC 64 Bit"; break; | |
267 | case IH_ARCH_SPARC: name = "SPARC"; break; | |
268 | default: name = "Unknown Architecture"; break; | |
269 | } | |
270 | ||
271 | return name; | |
272 | } | |
273 | ||
274 | const char* image_get_type_name (uint8_t type) | |
275 | { | |
276 | const char *name; | |
277 | ||
278 | switch (type) { | |
279 | case IH_TYPE_INVALID: name = "Invalid Image"; break; | |
280 | case IH_TYPE_STANDALONE:name = "Standalone Program"; break; | |
281 | case IH_TYPE_KERNEL: name = "Kernel Image"; break; | |
282 | case IH_TYPE_RAMDISK: name = "RAMDisk Image"; break; | |
283 | case IH_TYPE_MULTI: name = "Multi-File Image"; break; | |
284 | case IH_TYPE_FIRMWARE: name = "Firmware"; break; | |
285 | case IH_TYPE_SCRIPT: name = "Script"; break; | |
286 | case IH_TYPE_FLATDT: name = "Flat Device Tree"; break; | |
287 | default: name = "Unknown Image"; break; | |
288 | } | |
289 | ||
290 | return name; | |
291 | } | |
292 | ||
293 | const char* image_get_comp_name (uint8_t comp) | |
294 | { | |
295 | const char *name; | |
296 | ||
297 | switch (comp) { | |
298 | case IH_COMP_NONE: name = "uncompressed"; break; | |
299 | case IH_COMP_GZIP: name = "gzip compressed"; break; | |
300 | case IH_COMP_BZIP2: name = "bzip2 compressed"; break; | |
301 | default: name = "unknown compression"; break; | |
302 | } | |
303 | ||
304 | return name; | |
305 | } | |
5ad03eb3 MB |
306 | |
307 | /** | |
308 | * image_get_ramdisk - get and verify ramdisk image | |
309 | * @cmdtp: command table pointer | |
310 | * @flag: command flag | |
311 | * @argc: command argument count | |
312 | * @argv: command argument list | |
313 | * @rd_addr: ramdisk image start address | |
314 | * @arch: expected ramdisk architecture | |
315 | * @verify: checksum verification flag | |
316 | * | |
317 | * image_get_ramdisk() returns a pointer to the verified ramdisk image | |
318 | * header. Routine receives image start address and expected architecture | |
319 | * flag. Verification done covers data and header integrity and os/type/arch | |
320 | * fields checking. | |
321 | * | |
322 | * If dataflash support is enabled routine checks for dataflash addresses | |
323 | * and handles required dataflash reads. | |
324 | * | |
325 | * returns: | |
326 | * pointer to a ramdisk image header, if image was found and valid | |
327 | * otherwise, board is reset | |
328 | */ | |
329 | image_header_t* image_get_ramdisk (cmd_tbl_t *cmdtp, int flag, | |
330 | int argc, char *argv[], | |
331 | ulong rd_addr, uint8_t arch, int verify) | |
332 | { | |
333 | image_header_t *rd_hdr; | |
334 | ||
335 | show_boot_progress (9); | |
336 | ||
337 | #ifdef CONFIG_HAS_DATAFLASH | |
338 | if (addr_dataflash (rd_addr)) { | |
339 | rd_hdr = (image_header_t *)CFG_LOAD_ADDR; | |
340 | debug (" Reading Ramdisk image header from dataflash address " | |
341 | "%08lx to %08lx\n", rd_addr, (ulong)rd_hdr); | |
342 | read_dataflash (rd_addr, image_get_header_size (), | |
343 | (char *)rd_hdr); | |
344 | } else | |
345 | #endif | |
346 | rd_hdr = (image_header_t *)rd_addr; | |
347 | ||
348 | if (!image_check_magic (rd_hdr)) { | |
349 | puts ("Bad Magic Number\n"); | |
350 | show_boot_progress (-10); | |
351 | do_reset (cmdtp, flag, argc, argv); | |
352 | } | |
353 | ||
354 | if (!image_check_hcrc (rd_hdr)) { | |
355 | puts ("Bad Header Checksum\n"); | |
356 | show_boot_progress (-11); | |
357 | do_reset (cmdtp, flag, argc, argv); | |
358 | } | |
359 | ||
360 | show_boot_progress (10); | |
361 | print_image_hdr (rd_hdr); | |
362 | ||
363 | #ifdef CONFIG_HAS_DATAFLASH | |
364 | if (addr_dataflash (rd_addr)) { | |
365 | debug (" Reading Ramdisk image data from dataflash address " | |
366 | "%08lx to %08lx\n", rd_addr + image_get_header_size, | |
367 | (ulong)image_get_data (rd_hdr)); | |
368 | ||
369 | read_dataflash (rd_addr + image_get_header_size (), | |
370 | image_get_data_size (rd_hdr), | |
371 | (char *)image_get_data (rd_hdr)); | |
372 | } | |
42b73e8e | 373 | #endif |
5ad03eb3 MB |
374 | |
375 | if (verify) { | |
376 | puts(" Verifying Checksum ... "); | |
377 | if (!image_check_dcrc_wd (rd_hdr, CHUNKSZ)) { | |
378 | puts ("Bad Data CRC\n"); | |
379 | show_boot_progress (-12); | |
380 | do_reset (cmdtp, flag, argc, argv); | |
381 | } | |
382 | puts("OK\n"); | |
383 | } | |
384 | ||
385 | show_boot_progress (11); | |
386 | ||
387 | if (!image_check_os (rd_hdr, IH_OS_LINUX) || | |
388 | !image_check_arch (rd_hdr, arch) || | |
389 | !image_check_type (rd_hdr, IH_TYPE_RAMDISK)) { | |
390 | printf ("No Linux %s Ramdisk Image\n", | |
391 | image_get_arch_name(arch)); | |
392 | show_boot_progress (-13); | |
393 | do_reset (cmdtp, flag, argc, argv); | |
394 | } | |
395 | ||
396 | return rd_hdr; | |
397 | } | |
398 | ||
399 | /** | |
400 | * get_ramdisk - main ramdisk handling routine | |
401 | * @cmdtp: command table pointer | |
402 | * @flag: command flag | |
403 | * @argc: command argument count | |
404 | * @argv: command argument list | |
405 | * @hdr: pointer to the posiibly multi componet kernel image | |
406 | * @verify: checksum verification flag | |
407 | * @arch: expected ramdisk architecture | |
408 | * @rd_start: pointer to a ulong variable, will hold ramdisk start address | |
409 | * @rd_end: pointer to a ulong variable, will hold ramdisk end | |
410 | * | |
411 | * get_ramdisk() is responsible for finding a valid ramdisk image. | |
412 | * Curently supported are the following ramdisk sources: | |
413 | * - multicomponent kernel/ramdisk image, | |
414 | * - commandline provided address of decicated ramdisk image. | |
415 | * | |
416 | * returns: | |
417 | * rd_start and rd_end are set to ramdisk start/end addresses if | |
418 | * ramdisk image is found and valid | |
419 | * rd_start and rd_end are set to 0 if no ramdisk exists | |
420 | * board is reset if ramdisk image is found but corrupted | |
421 | */ | |
422 | void get_ramdisk (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], | |
423 | image_header_t *hdr, int verify, uint8_t arch, | |
424 | ulong *rd_start, ulong *rd_end) | |
425 | { | |
426 | ulong rd_addr; | |
427 | ulong rd_data, rd_len; | |
428 | image_header_t *rd_hdr; | |
429 | ||
430 | if (argc >= 3) { | |
431 | /* | |
432 | * Look for a '-' which indicates to ignore the | |
433 | * ramdisk argument | |
434 | */ | |
435 | if (strcmp(argv[2], "-") == 0) { | |
436 | debug ("## Skipping init Ramdisk\n"); | |
437 | rd_len = rd_data = 0; | |
438 | } else { | |
439 | /* | |
440 | * Check if there is an initrd image at the | |
441 | * address provided in the second bootm argument | |
442 | */ | |
443 | rd_addr = simple_strtoul (argv[2], NULL, 16); | |
444 | printf ("## Loading init Ramdisk Image at %08lx ...\n", | |
445 | rd_addr); | |
446 | ||
447 | rd_hdr = image_get_ramdisk (cmdtp, flag, argc, argv, | |
448 | rd_addr, arch, verify); | |
449 | ||
450 | rd_data = image_get_data (rd_hdr); | |
451 | rd_len = image_get_data_size (rd_hdr); | |
452 | ||
453 | #if defined(CONFIG_B2) || defined(CONFIG_EVB4510) || defined(CONFIG_ARMADILLO) | |
454 | /* | |
455 | *we need to copy the ramdisk to SRAM to let Linux boot | |
456 | */ | |
457 | memmove ((void *)image_get_load (rd_hdr), | |
458 | (uchar *)rd_data, rd_len); | |
459 | ||
460 | rd_data = image_get_load (rd_hdr); | |
461 | #endif /* CONFIG_B2 || CONFIG_EVB4510 || CONFIG_ARMADILLO */ | |
462 | } | |
463 | ||
464 | } else if (image_check_type (hdr, IH_TYPE_MULTI)) { | |
465 | /* | |
466 | * Now check if we have a multifile image | |
467 | * Get second entry data start address and len | |
468 | */ | |
469 | show_boot_progress (13); | |
470 | printf ("## Loading init Ramdisk from multi component " | |
471 | "Image at %08lx ...\n", (ulong)hdr); | |
472 | image_multi_getimg (hdr, 1, &rd_data, &rd_len); | |
473 | } else { | |
474 | /* | |
475 | * no initrd image | |
476 | */ | |
477 | show_boot_progress (14); | |
478 | rd_len = rd_data = 0; | |
479 | } | |
480 | ||
481 | if (!rd_data) { | |
482 | debug ("## No init Ramdisk\n"); | |
483 | *rd_start = 0; | |
484 | *rd_end = 0; | |
485 | } else { | |
486 | *rd_start = rd_data; | |
487 | *rd_end = rd_data + rd_len; | |
488 | } | |
489 | debug (" ramdisk start = 0x%08lx, ramdisk end = 0x%08lx\n", | |
490 | *rd_start, *rd_end); | |
491 | } | |
ceaed2b1 MB |
492 | |
493 | #if defined(CONFIG_PPC) || defined(CONFIG_M68K) | |
494 | /** | |
495 | * ramdisk_high - relocate init ramdisk | |
496 | * @rd_data: ramdisk data start address | |
497 | * @rd_len: ramdisk data length | |
498 | * @kbd: kernel board info copy (within BOOTMAPSZ boundary) | |
499 | * @sp_limit: stack pointer limit (including BOOTMAPSZ) | |
500 | * @sp: current stack pointer | |
501 | * @initrd_start: pointer to a ulong variable, will hold final init ramdisk | |
502 | * start address (after possible relocation) | |
503 | * @initrd_end: pointer to a ulong variable, will hold final init ramdisk | |
504 | * end address (after possible relocation) | |
505 | * | |
506 | * ramdisk_high() takes a relocation hint from "initrd_high" environement | |
507 | * variable and if requested ramdisk data is moved to a specified location. | |
508 | * | |
509 | * returns: | |
b6b0fe64 | 510 | * - initrd_start and initrd_end are set to final (after relocation) ramdisk |
ceaed2b1 | 511 | * start/end addresses if ramdisk image start and len were provided |
b6b0fe64 MB |
512 | * otherwise set initrd_start and initrd_end set to zeros |
513 | * - returns new allc_current, next free address below BOOTMAPSZ | |
ceaed2b1 | 514 | */ |
b6b0fe64 MB |
515 | ulong ramdisk_high (ulong alloc_current, ulong rd_data, ulong rd_len, |
516 | bd_t *kbd, ulong sp_limit, ulong sp, | |
517 | ulong *initrd_start, ulong *initrd_end) | |
ceaed2b1 MB |
518 | { |
519 | char *s; | |
520 | ulong initrd_high; | |
521 | int initrd_copy_to_ram = 1; | |
b6b0fe64 | 522 | ulong new_alloc_current = alloc_current; |
ceaed2b1 MB |
523 | |
524 | if ((s = getenv ("initrd_high")) != NULL) { | |
525 | /* a value of "no" or a similar string will act like 0, | |
526 | * turning the "load high" feature off. This is intentional. | |
527 | */ | |
528 | initrd_high = simple_strtoul (s, NULL, 16); | |
529 | if (initrd_high == ~0) | |
530 | initrd_copy_to_ram = 0; | |
531 | } else { | |
532 | /* not set, no restrictions to load high */ | |
533 | initrd_high = ~0; | |
534 | } | |
535 | ||
536 | #ifdef CONFIG_LOGBUFFER | |
537 | /* Prevent initrd from overwriting logbuffer */ | |
538 | if (initrd_high < (kbd->bi_memsize - LOGBUFF_LEN - LOGBUFF_OVERHEAD)) | |
539 | initrd_high = kbd->bi_memsize - LOGBUFF_LEN - LOGBUFF_OVERHEAD; | |
540 | debug ("## Logbuffer at 0x%08lx ", kbd->bi_memsize - LOGBUFF_LEN); | |
541 | #endif | |
542 | debug ("## initrd_high = 0x%08lx, copy_to_ram = %d\n", | |
543 | initrd_high, initrd_copy_to_ram); | |
544 | ||
545 | if (rd_data) { | |
546 | if (!initrd_copy_to_ram) { /* zero-copy ramdisk support */ | |
547 | debug (" in-place initrd\n"); | |
548 | *initrd_start = rd_data; | |
549 | *initrd_end = rd_data + rd_len; | |
550 | } else { | |
b6b0fe64 MB |
551 | new_alloc_current = alloc_current - rd_len; |
552 | *initrd_start = new_alloc_current; | |
ceaed2b1 MB |
553 | *initrd_start &= ~(4096 - 1); /* align on page */ |
554 | ||
555 | if (initrd_high) { | |
556 | ulong nsp; | |
557 | ||
558 | /* | |
559 | * the inital ramdisk does not need to be within | |
560 | * CFG_BOOTMAPSZ as it is not accessed until after | |
561 | * the mm system is initialised. | |
562 | * | |
563 | * do the stack bottom calculation again and see if | |
564 | * the initrd will fit just below the monitor stack | |
565 | * bottom without overwriting the area allocated | |
566 | * for command line args and board info. | |
567 | */ | |
568 | nsp = sp; | |
569 | nsp -= 2048; /* just to be sure */ | |
570 | nsp &= ~0xF; | |
571 | ||
572 | if (nsp > initrd_high) /* limit as specified */ | |
573 | nsp = initrd_high; | |
574 | ||
575 | nsp -= rd_len; | |
576 | nsp &= ~(4096 - 1); /* align on page */ | |
577 | ||
b6b0fe64 | 578 | if (nsp >= sp_limit) { |
ceaed2b1 | 579 | *initrd_start = nsp; |
b6b0fe64 MB |
580 | new_alloc_current = alloc_current; |
581 | } | |
ceaed2b1 MB |
582 | } |
583 | ||
584 | show_boot_progress (12); | |
585 | ||
586 | *initrd_end = *initrd_start + rd_len; | |
587 | printf (" Loading Ramdisk to %08lx, end %08lx ... ", | |
588 | *initrd_start, *initrd_end); | |
589 | ||
590 | memmove_wd((void *)*initrd_start, | |
591 | (void *)rd_data, rd_len, CHUNKSZ); | |
592 | ||
593 | puts ("OK\n"); | |
594 | } | |
595 | } else { | |
596 | *initrd_start = 0; | |
597 | *initrd_end = 0; | |
598 | } | |
599 | debug (" ramdisk load start = 0x%08lx, ramdisk load end = 0x%08lx\n", | |
600 | *initrd_start, *initrd_end); | |
b6b0fe64 MB |
601 | |
602 | return new_alloc_current; | |
603 | } | |
604 | ||
605 | /** | |
606 | * get_boot_sp_limit - calculate stack pointer limit | |
607 | * @sp: current stack pointer | |
608 | * | |
609 | * get_boot_sp_limit() takes current stack pointer adrress and calculates | |
610 | * stack pointer limit, below which kernel boot data (cmdline, board info, | |
611 | * etc.) will be allocated. | |
612 | * | |
613 | * returns: | |
614 | * stack pointer limit | |
615 | */ | |
616 | ulong get_boot_sp_limit(ulong sp) | |
617 | { | |
618 | ulong sp_limit = sp; | |
619 | ||
620 | sp_limit -= 2048; /* just to be sure */ | |
621 | ||
622 | /* make sure sp_limit is within kernel mapped space */ | |
623 | if (sp_limit > CFG_BOOTMAPSZ) | |
624 | sp_limit = CFG_BOOTMAPSZ; | |
625 | sp_limit &= ~0xF; | |
626 | ||
627 | return sp_limit; | |
628 | } | |
629 | ||
630 | /** | |
631 | * get_boot_cmdline - allocate and initialize kernel cmdline | |
632 | * @alloc_current: current boot allocation address (counting down | |
633 | * from sp_limit) | |
634 | * @cmd_start: pointer to a ulong variable, will hold cmdline start | |
635 | * @cmd_end: pointer to a ulong variable, will hold cmdline end | |
636 | * | |
637 | * get_boot_cmdline() allocates space for kernel command line below | |
638 | * provided alloc_current address. If "bootargs" U-boot environemnt | |
639 | * variable is present its contents is copied to allocated kernel | |
640 | * command line. | |
641 | * | |
642 | * returns: | |
643 | * alloc_current after cmdline allocation | |
644 | */ | |
645 | ulong get_boot_cmdline (ulong alloc_current, ulong *cmd_start, ulong *cmd_end) | |
646 | { | |
647 | char *cmdline; | |
648 | char *s; | |
649 | ||
650 | cmdline = (char *)((alloc_current - CFG_BARGSIZE) & ~0xF); | |
651 | ||
652 | if ((s = getenv("bootargs")) == NULL) | |
653 | s = ""; | |
654 | ||
655 | strcpy(cmdline, s); | |
656 | ||
657 | *cmd_start = (ulong) & cmdline[0]; | |
658 | *cmd_end = *cmd_start + strlen(cmdline); | |
659 | ||
660 | debug ("## cmdline at 0x%08lx ... 0x%08lx\n", *cmd_start, *cmd_end); | |
661 | ||
662 | return (ulong)cmdline; | |
663 | } | |
664 | ||
665 | /** | |
666 | * get_boot_kbd - allocate and initialize kernel copy of board info | |
667 | * @alloc_current: current boot allocation address (counting down | |
668 | * from sp_limit) | |
669 | * @kbd: double pointer to board info data | |
670 | * | |
671 | * get_boot_kbd() - allocates space for kernel copy of board info data. | |
672 | * Space is allocated below provided alloc_current address and kernel | |
673 | * board info is initialized with the current u-boot board info data. | |
674 | * | |
675 | * returns: | |
676 | * alloc_current after kbd allocation | |
677 | */ | |
678 | ulong get_boot_kbd (ulong alloc_current, bd_t **kbd) | |
679 | { | |
680 | *kbd = (bd_t *) (((ulong)alloc_current - sizeof(bd_t)) & ~0xF); | |
681 | **kbd = *(gd->bd); | |
682 | ||
683 | debug ("## kernel board info at 0x%08lx\n", (ulong)*kbd); | |
684 | ||
685 | #if defined(DEBUG) && defined(CONFIG_CMD_BDI) | |
686 | do_bdinfo(NULL, 0, 0, NULL); | |
687 | #endif | |
688 | ||
689 | return (ulong)*kbd; | |
ceaed2b1 MB |
690 | } |
691 | #endif /* CONFIG_PPC || CONFIG_M68K */ | |
5ad03eb3 | 692 | |
b6b0fe64 | 693 | #endif /* USE_HOSTCC */ |