1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2000-2009
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 */
6
7 #ifndef USE_HOSTCC
8 #include <common.h>
9 #include <bootstage.h>
10 #include <cli.h>
11 #include <cpu_func.h>
12 #include <env.h>
13 #include <errno.h>
14 #include <fdt_support.h>
15 #include <irq_func.h>
16 #include <lmb.h>
17 #include <log.h>
18 #include <malloc.h>
19 #include <mapmem.h>
20 #include <net.h>
21 #include <asm/cache.h>
22 #include <asm/global_data.h>
23 #include <asm/io.h>
24 #include <linux/sizes.h>
25 #if defined(CONFIG_CMD_USB)
26 #include <usb.h>
27 #endif
28 #else
29 #include "mkimage.h"
30 #endif
31
32 #include <command.h>
33 #include <bootm.h>
34 #include <image.h>
35
36 #ifndef CONFIG_SYS_BOOTM_LEN
37 /* use 8MByte as default max gunzip size */
38 #define CONFIG_SYS_BOOTM_LEN 0x800000
39 #endif
40
41 #define MAX_CMDLINE_SIZE SZ_4K
42
43 #define IH_INITRD_ARCH IH_ARCH_DEFAULT
44
45 #ifndef USE_HOSTCC
46
47 DECLARE_GLOBAL_DATA_PTR;
48
49 bootm_headers_t images; /* pointers to os/initrd/fdt images */
50
51 static const void *boot_get_kernel(struct cmd_tbl *cmdtp, int flag, int argc,
52 char *const argv[], bootm_headers_t *images,
53 ulong *os_data, ulong *os_len);
54
board_quiesce_devices(void)55 __weak void board_quiesce_devices(void)
56 {
57 }
58
59 #ifdef CONFIG_LMB
boot_start_lmb(bootm_headers_t * images)60 static void boot_start_lmb(bootm_headers_t *images)
61 {
62 ulong mem_start;
63 phys_size_t mem_size;
64
65 mem_start = env_get_bootm_low();
66 mem_size = env_get_bootm_size();
67
68 lmb_init_and_reserve_range(&images->lmb, (phys_addr_t)mem_start,
69 mem_size, NULL);
70 }
71 #else
72 #define lmb_reserve(lmb, base, size)
boot_start_lmb(bootm_headers_t * images)73 static inline void boot_start_lmb(bootm_headers_t *images) { }
74 #endif
75
bootm_start(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])76 static int bootm_start(struct cmd_tbl *cmdtp, int flag, int argc,
77 char *const argv[])
78 {
79 memset((void *)&images, 0, sizeof(images));
80 images.verify = env_get_yesno("verify");
81
82 boot_start_lmb(&images);
83
84 bootstage_mark_name(BOOTSTAGE_ID_BOOTM_START, "bootm_start");
85 images.state = BOOTM_STATE_START;
86
87 return 0;
88 }
89
bootm_find_os(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])90 static int bootm_find_os(struct cmd_tbl *cmdtp, int flag, int argc,
91 char *const argv[])
92 {
93 const void *os_hdr;
94 bool ep_found = false;
95 int ret;
96
97 /* get kernel image header, start address and length */
98 os_hdr = boot_get_kernel(cmdtp, flag, argc, argv,
99 &images, &images.os.image_start, &images.os.image_len);
100 if (images.os.image_len == 0) {
101 puts("ERROR: can't get kernel image!\n");
102 return 1;
103 }
104
105 /* get image parameters */
106 switch (genimg_get_format(os_hdr)) {
107 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
108 case IMAGE_FORMAT_LEGACY:
109 images.os.type = image_get_type(os_hdr);
110 images.os.comp = image_get_comp(os_hdr);
111 images.os.os = image_get_os(os_hdr);
112
113 images.os.end = image_get_image_end(os_hdr);
114 images.os.load = image_get_load(os_hdr);
115 images.os.arch = image_get_arch(os_hdr);
116 break;
117 #endif
118 #if CONFIG_IS_ENABLED(FIT)
119 case IMAGE_FORMAT_FIT:
120 if (fit_image_get_type(images.fit_hdr_os,
121 images.fit_noffset_os,
122 &images.os.type)) {
123 puts("Can't get image type!\n");
124 bootstage_error(BOOTSTAGE_ID_FIT_TYPE);
125 return 1;
126 }
127
128 if (fit_image_get_comp(images.fit_hdr_os,
129 images.fit_noffset_os,
130 &images.os.comp)) {
131 puts("Can't get image compression!\n");
132 bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION);
133 return 1;
134 }
135
136 if (fit_image_get_os(images.fit_hdr_os, images.fit_noffset_os,
137 &images.os.os)) {
138 puts("Can't get image OS!\n");
139 bootstage_error(BOOTSTAGE_ID_FIT_OS);
140 return 1;
141 }
142
143 if (fit_image_get_arch(images.fit_hdr_os,
144 images.fit_noffset_os,
145 &images.os.arch)) {
146 puts("Can't get image ARCH!\n");
147 return 1;
148 }
149
150 images.os.end = fit_get_end(images.fit_hdr_os);
151
152 if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os,
153 &images.os.load)) {
154 puts("Can't get image load address!\n");
155 bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR);
156 return 1;
157 }
158 break;
159 #endif
160 #ifdef CONFIG_ANDROID_BOOT_IMAGE
161 case IMAGE_FORMAT_ANDROID:
162 images.os.type = IH_TYPE_KERNEL;
163 images.os.comp = android_image_get_kcomp(os_hdr);
164 images.os.os = IH_OS_LINUX;
165
166 images.os.end = android_image_get_end(os_hdr);
167 images.os.load = android_image_get_kload(os_hdr);
168 images.ep = images.os.load;
169 ep_found = true;
170 break;
171 #endif
172 default:
173 puts("ERROR: unknown image format type!\n");
174 return 1;
175 }
176
177 /* If we have a valid setup.bin, we will use that for entry (x86) */
178 if (images.os.arch == IH_ARCH_I386 ||
179 images.os.arch == IH_ARCH_X86_64) {
180 ulong len;
181
182 ret = boot_get_setup(&images, IH_ARCH_I386, &images.ep, &len);
183 if (ret < 0 && ret != -ENOENT) {
184 puts("Could not find a valid setup.bin for x86\n");
185 return 1;
186 }
187 /* Kernel entry point is the setup.bin */
188 } else if (images.legacy_hdr_valid) {
189 images.ep = image_get_ep(&images.legacy_hdr_os_copy);
190 #if CONFIG_IS_ENABLED(FIT)
191 } else if (images.fit_uname_os) {
192 int ret;
193
194 ret = fit_image_get_entry(images.fit_hdr_os,
195 images.fit_noffset_os, &images.ep);
196 if (ret) {
197 puts("Can't get entry point property!\n");
198 return 1;
199 }
200 #endif
201 } else if (!ep_found) {
202 puts("Could not find kernel entry point!\n");
203 return 1;
204 }
205
206 if (images.os.type == IH_TYPE_KERNEL_NOLOAD) {
207 if (CONFIG_IS_ENABLED(CMD_BOOTI) &&
208 images.os.arch == IH_ARCH_ARM64) {
209 ulong image_addr;
210 ulong image_size;
211
212 ret = booti_setup(images.os.image_start, &image_addr,
213 &image_size, true);
214 if (ret != 0)
215 return 1;
216
217 images.os.type = IH_TYPE_KERNEL;
218 images.os.load = image_addr;
219 images.ep = image_addr;
220 } else {
221 images.os.load = images.os.image_start;
222 images.ep += images.os.image_start;
223 }
224 }
225
226 images.os.start = map_to_sysmem(os_hdr);
227
228 return 0;
229 }
230
231 /**
232 * bootm_find_images - wrapper to find and locate various images
233 * @flag: Ignored Argument
234 * @argc: command argument count
235 * @argv: command argument list
236 * @start: OS image start address
237 * @size: OS image size
238 *
239 * boot_find_images() will attempt to load an available ramdisk,
240 * flattened device tree, as well as specifically marked
241 * "loadable" images (loadables are FIT only)
242 *
243 * Note: bootm_find_images will skip an image if it is not found
244 *
245 * @return:
246 * 0, if all existing images were loaded correctly
247 * 1, if an image is found but corrupted, or invalid
248 */
bootm_find_images(int flag,int argc,char * const argv[],ulong start,ulong size)249 int bootm_find_images(int flag, int argc, char *const argv[], ulong start,
250 ulong size)
251 {
252 int ret;
253
254 /* find ramdisk */
255 ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
256 &images.rd_start, &images.rd_end);
257 if (ret) {
258 puts("Ramdisk image is corrupt or invalid\n");
259 return 1;
260 }
261
262 /* check if ramdisk overlaps OS image */
263 if (images.rd_start && (((ulong)images.rd_start >= start &&
264 (ulong)images.rd_start < start + size) ||
265 ((ulong)images.rd_end > start &&
266 (ulong)images.rd_end <= start + size) ||
267 ((ulong)images.rd_start < start &&
268 (ulong)images.rd_end >= start + size))) {
269 printf("ERROR: RD image overlaps OS image (OS=0x%lx..0x%lx)\n",
270 start, start + size);
271 return 1;
272 }
273
274 #if CONFIG_IS_ENABLED(OF_LIBFDT)
275 /* find flattened device tree */
276 ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images,
277 &images.ft_addr, &images.ft_len);
278 if (ret) {
279 puts("Could not find a valid device tree\n");
280 return 1;
281 }
282
283 /* check if FDT overlaps OS image */
284 if (images.ft_addr &&
285 (((ulong)images.ft_addr >= start &&
286 (ulong)images.ft_addr <= start + size) ||
287 ((ulong)images.ft_addr + images.ft_len >= start &&
288 (ulong)images.ft_addr + images.ft_len <= start + size))) {
289 printf("ERROR: FDT image overlaps OS image (OS=0x%lx..0x%lx)\n",
290 start, start + size);
291 return 1;
292 }
293
294 if (CONFIG_IS_ENABLED(CMD_FDT))
295 set_working_fdt_addr(map_to_sysmem(images.ft_addr));
296 #endif
297
298 #if CONFIG_IS_ENABLED(FIT)
299 if (IS_ENABLED(CONFIG_FPGA)) {
300 /* find bitstreams */
301 ret = boot_get_fpga(argc, argv, &images, IH_ARCH_DEFAULT,
302 NULL, NULL);
303 if (ret) {
304 printf("FPGA image is corrupted or invalid\n");
305 return 1;
306 }
307 }
308
309 /* find all of the loadables */
310 ret = boot_get_loadable(argc, argv, &images, IH_ARCH_DEFAULT,
311 NULL, NULL);
312 if (ret) {
313 printf("Loadable(s) is corrupt or invalid\n");
314 return 1;
315 }
316 #endif
317
318 return 0;
319 }
320
bootm_find_other(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])321 static int bootm_find_other(struct cmd_tbl *cmdtp, int flag, int argc,
322 char *const argv[])
323 {
324 if (((images.os.type == IH_TYPE_KERNEL) ||
325 (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
326 (images.os.type == IH_TYPE_MULTI)) &&
327 (images.os.os == IH_OS_LINUX ||
328 images.os.os == IH_OS_VXWORKS))
329 return bootm_find_images(flag, argc, argv, 0, 0);
330
331 return 0;
332 }
333 #endif /* USE_HOSTC */
334
335 #if !defined(USE_HOSTCC) || defined(CONFIG_FIT_SIGNATURE)
336 /**
337 * handle_decomp_error() - display a decompression error
338 *
339 * This function tries to produce a useful message. In the case where the
340 * uncompressed size is the same as the available space, we can assume that
341 * the image is too large for the buffer.
342 *
343 * @comp_type: Compression type being used (IH_COMP_...)
344 * @uncomp_size: Number of bytes uncompressed
345 * @ret: errno error code received from compression library
346 * @return Appropriate BOOTM_ERR_ error code
347 */
handle_decomp_error(int comp_type,size_t uncomp_size,int ret)348 static int handle_decomp_error(int comp_type, size_t uncomp_size, int ret)
349 {
350 const char *name = genimg_get_comp_name(comp_type);
351
352 /* ENOSYS means unimplemented compression type, don't reset. */
353 if (ret == -ENOSYS)
354 return BOOTM_ERR_UNIMPLEMENTED;
355
356 if (uncomp_size >= CONFIG_SYS_BOOTM_LEN)
357 printf("Image too large: increase CONFIG_SYS_BOOTM_LEN\n");
358 else
359 printf("%s: uncompress error %d\n", name, ret);
360
361 /*
362 * The decompression routines are now safe, so will not write beyond
363 * their bounds. Probably it is not necessary to reset, but maintain
364 * the current behaviour for now.
365 */
366 printf("Must RESET board to recover\n");
367 #ifndef USE_HOSTCC
368 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
369 #endif
370
371 return BOOTM_ERR_RESET;
372 }
373 #endif
374
375 #ifndef USE_HOSTCC
bootm_load_os(bootm_headers_t * images,int boot_progress)376 static int bootm_load_os(bootm_headers_t *images, int boot_progress)
377 {
378 image_info_t os = images->os;
379 ulong load = os.load;
380 ulong load_end;
381 ulong blob_start = os.start;
382 ulong blob_end = os.end;
383 ulong image_start = os.image_start;
384 ulong image_len = os.image_len;
385 ulong flush_start = ALIGN_DOWN(load, ARCH_DMA_MINALIGN);
386 bool no_overlap;
387 void *load_buf, *image_buf;
388 int err;
389
390 load_buf = map_sysmem(load, 0);
391 image_buf = map_sysmem(os.image_start, image_len);
392 err = image_decomp(os.comp, load, os.image_start, os.type,
393 load_buf, image_buf, image_len,
394 CONFIG_SYS_BOOTM_LEN, &load_end);
395 if (err) {
396 err = handle_decomp_error(os.comp, load_end - load, err);
397 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
398 return err;
399 }
400 /* We need the decompressed image size in the next steps */
401 images->os.image_len = load_end - load;
402
403 flush_cache(flush_start, ALIGN(load_end, ARCH_DMA_MINALIGN) - flush_start);
404
405 debug(" kernel loaded at 0x%08lx, end = 0x%08lx\n", load, load_end);
406 bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
407
408 no_overlap = (os.comp == IH_COMP_NONE && load == image_start);
409
410 if (!no_overlap && load < blob_end && load_end > blob_start) {
411 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
412 blob_start, blob_end);
413 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
414 load_end);
415
416 /* Check what type of image this is. */
417 if (images->legacy_hdr_valid) {
418 if (image_get_type(&images->legacy_hdr_os_copy)
419 == IH_TYPE_MULTI)
420 puts("WARNING: legacy format multi component image overwritten\n");
421 return BOOTM_ERR_OVERLAP;
422 } else {
423 puts("ERROR: new format image overwritten - must RESET the board to recover\n");
424 bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
425 return BOOTM_ERR_RESET;
426 }
427 }
428
429 lmb_reserve(&images->lmb, images->os.load, (load_end -
430 images->os.load));
431 return 0;
432 }
433
434 /**
435 * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot
436 *
437 * @return interrupt flag (0 if interrupts were disabled, non-zero if they were
438 * enabled)
439 */
bootm_disable_interrupts(void)440 ulong bootm_disable_interrupts(void)
441 {
442 ulong iflag;
443
444 /*
445 * We have reached the point of no return: we are going to
446 * overwrite all exception vector code, so we cannot easily
447 * recover from any failures any more...
448 */
449 iflag = disable_interrupts();
450 #ifdef CONFIG_NETCONSOLE
451 /* Stop the ethernet stack if NetConsole could have left it up */
452 eth_halt();
453 # ifndef CONFIG_DM_ETH
454 eth_unregister(eth_get_dev());
455 # endif
456 #endif
457
458 #if defined(CONFIG_CMD_USB)
459 /*
460 * turn off USB to prevent the host controller from writing to the
461 * SDRAM while Linux is booting. This could happen (at least for OHCI
462 * controller), because the HCCA (Host Controller Communication Area)
463 * lies within the SDRAM and the host controller writes continously to
464 * this area (as busmaster!). The HccaFrameNumber is for example
465 * updated every 1 ms within the HCCA structure in SDRAM! For more
466 * details see the OpenHCI specification.
467 */
468 usb_stop();
469 #endif
470 return iflag;
471 }
472
473 #define CONSOLE_ARG "console="
474 #define CONSOLE_ARG_SIZE sizeof(CONSOLE_ARG)
475
476 /**
477 * fixup_silent_linux() - Handle silencing the linux boot if required
478 *
479 * This uses the silent_linux envvar to control whether to add/set a "console="
480 * parameter to the command line
481 *
482 * @buf: Buffer containing the string to process
483 * @maxlen: Maximum length of buffer
484 * @return 0 if OK, -ENOSPC if @maxlen is too small
485 */
fixup_silent_linux(char * buf,int maxlen)486 static int fixup_silent_linux(char *buf, int maxlen)
487 {
488 int want_silent;
489 char *cmdline;
490 int size;
491
492 /*
493 * Move the input string to the end of buffer. The output string will be
494 * built up at the start.
495 */
496 size = strlen(buf) + 1;
497 if (size * 2 > maxlen)
498 return -ENOSPC;
499 cmdline = buf + maxlen - size;
500 memmove(cmdline, buf, size);
501 /*
502 * Only fix cmdline when requested. The environment variable can be:
503 *
504 * no - we never fixup
505 * yes - we always fixup
506 * unset - we rely on the console silent flag
507 */
508 want_silent = env_get_yesno("silent_linux");
509 if (want_silent == 0)
510 return 0;
511 else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT))
512 return 0;
513
514 debug("before silent fix-up: %s\n", cmdline);
515 if (*cmdline) {
516 char *start = strstr(cmdline, CONSOLE_ARG);
517
518 /* Check space for maximum possible new command line */
519 if (size + CONSOLE_ARG_SIZE > maxlen)
520 return -ENOSPC;
521
522 if (start) {
523 char *end = strchr(start, ' ');
524 int start_bytes;
525
526 start_bytes = start - cmdline + CONSOLE_ARG_SIZE - 1;
527 strncpy(buf, cmdline, start_bytes);
528 if (end)
529 strcpy(buf + start_bytes, end);
530 else
531 buf[start_bytes] = '\0';
532 } else {
533 sprintf(buf, "%s %s", cmdline, CONSOLE_ARG);
534 }
535 if (buf + strlen(buf) >= cmdline)
536 return -ENOSPC;
537 } else {
538 if (maxlen < sizeof(CONSOLE_ARG))
539 return -ENOSPC;
540 strcpy(buf, CONSOLE_ARG);
541 }
542 debug("after silent fix-up: %s\n", buf);
543
544 return 0;
545 }
546
547 /**
548 * process_subst() - Handle substitution of ${...} fields in the environment
549 *
550 * Handle variable substitution in the provided buffer
551 *
552 * @buf: Buffer containing the string to process
553 * @maxlen: Maximum length of buffer
554 * @return 0 if OK, -ENOSPC if @maxlen is too small
555 */
process_subst(char * buf,int maxlen)556 static int process_subst(char *buf, int maxlen)
557 {
558 char *cmdline;
559 int size;
560 int ret;
561
562 /* Move to end of buffer */
563 size = strlen(buf) + 1;
564 cmdline = buf + maxlen - size;
565 if (buf + size > cmdline)
566 return -ENOSPC;
567 memmove(cmdline, buf, size);
568
569 ret = cli_simple_process_macros(cmdline, buf, cmdline - buf);
570
571 return ret;
572 }
573
bootm_process_cmdline(char * buf,int maxlen,int flags)574 int bootm_process_cmdline(char *buf, int maxlen, int flags)
575 {
576 int ret;
577
578 /* Check config first to enable compiler to eliminate code */
579 if (IS_ENABLED(CONFIG_SILENT_CONSOLE) &&
580 !IS_ENABLED(CONFIG_SILENT_U_BOOT_ONLY) &&
581 (flags & BOOTM_CL_SILENT)) {
582 ret = fixup_silent_linux(buf, maxlen);
583 if (ret)
584 return log_msg_ret("silent", ret);
585 }
586 if (IS_ENABLED(CONFIG_BOOTARGS_SUBST) && IS_ENABLED(CONFIG_CMDLINE) &&
587 (flags & BOOTM_CL_SUBST)) {
588 ret = process_subst(buf, maxlen);
589 if (ret)
590 return log_msg_ret("subst", ret);
591 }
592
593 return 0;
594 }
595
bootm_process_cmdline_env(int flags)596 int bootm_process_cmdline_env(int flags)
597 {
598 const int maxlen = MAX_CMDLINE_SIZE;
599 bool do_silent;
600 const char *env;
601 char *buf;
602 int ret;
603
604 /* First check if any action is needed */
605 do_silent = IS_ENABLED(CONFIG_SILENT_CONSOLE) &&
606 !IS_ENABLED(CONFIG_SILENT_U_BOOT_ONLY) && (flags & BOOTM_CL_SILENT);
607 if (!do_silent && !IS_ENABLED(CONFIG_BOOTARGS_SUBST))
608 return 0;
609
610 env = env_get("bootargs");
611 if (env && strlen(env) >= maxlen)
612 return -E2BIG;
613 buf = malloc(maxlen);
614 if (!buf)
615 return -ENOMEM;
616 if (env)
617 strcpy(buf, env);
618 else
619 *buf = '\0';
620 ret = bootm_process_cmdline(buf, maxlen, flags);
621 if (!ret) {
622 ret = env_set("bootargs", buf);
623
624 /*
625 * If buf is "" and bootargs does not exist, this will produce
626 * an error trying to delete bootargs. Ignore it
627 */
628 if (ret == -ENOENT)
629 ret = 0;
630 }
631 free(buf);
632 if (ret)
633 return log_msg_ret("env", ret);
634
635 return 0;
636 }
637
638 /**
639 * Execute selected states of the bootm command.
640 *
641 * Note the arguments to this state must be the first argument, Any 'bootm'
642 * or sub-command arguments must have already been taken.
643 *
644 * Note that if states contains more than one flag it MUST contain
645 * BOOTM_STATE_START, since this handles and consumes the command line args.
646 *
647 * Also note that aside from boot_os_fn functions and bootm_load_os no other
648 * functions we store the return value of in 'ret' may use a negative return
649 * value, without special handling.
650 *
651 * @param cmdtp Pointer to bootm command table entry
652 * @param flag Command flags (CMD_FLAG_...)
653 * @param argc Number of subcommand arguments (0 = no arguments)
654 * @param argv Arguments
655 * @param states Mask containing states to run (BOOTM_STATE_...)
656 * @param images Image header information
657 * @param boot_progress 1 to show boot progress, 0 to not do this
658 * @return 0 if ok, something else on error. Some errors will cause this
659 * function to perform a reboot! If states contains BOOTM_STATE_OS_GO
660 * then the intent is to boot an OS, so this function will not return
661 * unless the image type is standalone.
662 */
do_bootm_states(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[],int states,bootm_headers_t * images,int boot_progress)663 int do_bootm_states(struct cmd_tbl *cmdtp, int flag, int argc,
664 char *const argv[], int states, bootm_headers_t *images,
665 int boot_progress)
666 {
667 boot_os_fn *boot_fn;
668 ulong iflag = 0;
669 int ret = 0, need_boot_fn;
670
671 images->state |= states;
672
673 /*
674 * Work through the states and see how far we get. We stop on
675 * any error.
676 */
677 if (states & BOOTM_STATE_START)
678 ret = bootm_start(cmdtp, flag, argc, argv);
679
680 if (!ret && (states & BOOTM_STATE_FINDOS))
681 ret = bootm_find_os(cmdtp, flag, argc, argv);
682
683 if (!ret && (states & BOOTM_STATE_FINDOTHER))
684 ret = bootm_find_other(cmdtp, flag, argc, argv);
685
686 /* Load the OS */
687 if (!ret && (states & BOOTM_STATE_LOADOS)) {
688 iflag = bootm_disable_interrupts();
689 ret = bootm_load_os(images, 0);
690 if (ret && ret != BOOTM_ERR_OVERLAP)
691 goto err;
692 else if (ret == BOOTM_ERR_OVERLAP)
693 ret = 0;
694 }
695
696 /* Relocate the ramdisk */
697 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
698 if (!ret && (states & BOOTM_STATE_RAMDISK)) {
699 ulong rd_len = images->rd_end - images->rd_start;
700
701 ret = boot_ramdisk_high(&images->lmb, images->rd_start,
702 rd_len, &images->initrd_start, &images->initrd_end);
703 if (!ret) {
704 env_set_hex("initrd_start", images->initrd_start);
705 env_set_hex("initrd_end", images->initrd_end);
706 }
707 }
708 #endif
709 #if CONFIG_IS_ENABLED(OF_LIBFDT) && defined(CONFIG_LMB)
710 if (!ret && (states & BOOTM_STATE_FDT)) {
711 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
712 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
713 &images->ft_len);
714 }
715 #endif
716
717 /* From now on, we need the OS boot function */
718 if (ret)
719 return ret;
720 boot_fn = bootm_os_get_boot_func(images->os.os);
721 need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE |
722 BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP |
723 BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO);
724 if (boot_fn == NULL && need_boot_fn) {
725 if (iflag)
726 enable_interrupts();
727 printf("ERROR: booting os '%s' (%d) is not supported\n",
728 genimg_get_os_name(images->os.os), images->os.os);
729 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
730 return 1;
731 }
732
733
734 /* Call various other states that are not generally used */
735 if (!ret && (states & BOOTM_STATE_OS_CMDLINE))
736 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images);
737 if (!ret && (states & BOOTM_STATE_OS_BD_T))
738 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
739 if (!ret && (states & BOOTM_STATE_OS_PREP)) {
740 ret = bootm_process_cmdline_env(images->os.os == IH_OS_LINUX);
741 if (ret) {
742 printf("Cmdline setup failed (err=%d)\n", ret);
743 ret = CMD_RET_FAILURE;
744 goto err;
745 }
746 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images);
747 }
748
749 #ifdef CONFIG_TRACE
750 /* Pretend to run the OS, then run a user command */
751 if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) {
752 char *cmd_list = env_get("fakegocmd");
753
754 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO,
755 images, boot_fn);
756 if (!ret && cmd_list)
757 ret = run_command_list(cmd_list, -1, flag);
758 }
759 #endif
760
761 /* Check for unsupported subcommand. */
762 if (ret) {
763 puts("subcommand not supported\n");
764 return ret;
765 }
766
767 /* Now run the OS! We hope this doesn't return */
768 if (!ret && (states & BOOTM_STATE_OS_GO))
769 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO,
770 images, boot_fn);
771
772 /* Deal with any fallout */
773 err:
774 if (iflag)
775 enable_interrupts();
776
777 if (ret == BOOTM_ERR_UNIMPLEMENTED)
778 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
779 else if (ret == BOOTM_ERR_RESET)
780 do_reset(cmdtp, flag, argc, argv);
781
782 return ret;
783 }
784
785 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
786 /**
787 * image_get_kernel - verify legacy format kernel image
788 * @img_addr: in RAM address of the legacy format image to be verified
789 * @verify: data CRC verification flag
790 *
791 * image_get_kernel() verifies legacy image integrity and returns pointer to
792 * legacy image header if image verification was completed successfully.
793 *
794 * returns:
795 * pointer to a legacy image header if valid image was found
796 * otherwise return NULL
797 */
image_get_kernel(ulong img_addr,int verify)798 static image_header_t *image_get_kernel(ulong img_addr, int verify)
799 {
800 image_header_t *hdr = (image_header_t *)img_addr;
801
802 if (!image_check_magic(hdr)) {
803 puts("Bad Magic Number\n");
804 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
805 return NULL;
806 }
807 bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
808
809 if (!image_check_hcrc(hdr)) {
810 puts("Bad Header Checksum\n");
811 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
812 return NULL;
813 }
814
815 bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
816 image_print_contents(hdr);
817
818 if (verify) {
819 puts(" Verifying Checksum ... ");
820 if (!image_check_dcrc(hdr)) {
821 printf("Bad Data CRC\n");
822 bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
823 return NULL;
824 }
825 puts("OK\n");
826 }
827 bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
828
829 if (!image_check_target_arch(hdr)) {
830 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
831 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
832 return NULL;
833 }
834 return hdr;
835 }
836 #endif
837
838 /**
839 * boot_get_kernel - find kernel image
840 * @os_data: pointer to a ulong variable, will hold os data start address
841 * @os_len: pointer to a ulong variable, will hold os data length
842 *
843 * boot_get_kernel() tries to find a kernel image, verifies its integrity
844 * and locates kernel data.
845 *
846 * returns:
847 * pointer to image header if valid image was found, plus kernel start
848 * address and length, otherwise NULL
849 */
boot_get_kernel(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[],bootm_headers_t * images,ulong * os_data,ulong * os_len)850 static const void *boot_get_kernel(struct cmd_tbl *cmdtp, int flag, int argc,
851 char *const argv[], bootm_headers_t *images,
852 ulong *os_data, ulong *os_len)
853 {
854 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
855 image_header_t *hdr;
856 #endif
857 ulong img_addr;
858 const void *buf;
859 const char *fit_uname_config = NULL;
860 const char *fit_uname_kernel = NULL;
861 #if CONFIG_IS_ENABLED(FIT)
862 int os_noffset;
863 #endif
864
865 img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0],
866 &fit_uname_config,
867 &fit_uname_kernel);
868
869 bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
870
871 /* check image type, for FIT images get FIT kernel node */
872 *os_data = *os_len = 0;
873 buf = map_sysmem(img_addr, 0);
874 switch (genimg_get_format(buf)) {
875 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
876 case IMAGE_FORMAT_LEGACY:
877 printf("## Booting kernel from Legacy Image at %08lx ...\n",
878 img_addr);
879 hdr = image_get_kernel(img_addr, images->verify);
880 if (!hdr)
881 return NULL;
882 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
883
884 /* get os_data and os_len */
885 switch (image_get_type(hdr)) {
886 case IH_TYPE_KERNEL:
887 case IH_TYPE_KERNEL_NOLOAD:
888 *os_data = image_get_data(hdr);
889 *os_len = image_get_data_size(hdr);
890 break;
891 case IH_TYPE_MULTI:
892 image_multi_getimg(hdr, 0, os_data, os_len);
893 break;
894 case IH_TYPE_STANDALONE:
895 *os_data = image_get_data(hdr);
896 *os_len = image_get_data_size(hdr);
897 break;
898 default:
899 printf("Wrong Image Type for %s command\n",
900 cmdtp->name);
901 bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
902 return NULL;
903 }
904
905 /*
906 * copy image header to allow for image overwrites during
907 * kernel decompression.
908 */
909 memmove(&images->legacy_hdr_os_copy, hdr,
910 sizeof(image_header_t));
911
912 /* save pointer to image header */
913 images->legacy_hdr_os = hdr;
914
915 images->legacy_hdr_valid = 1;
916 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
917 break;
918 #endif
919 #if CONFIG_IS_ENABLED(FIT)
920 case IMAGE_FORMAT_FIT:
921 os_noffset = fit_image_load(images, img_addr,
922 &fit_uname_kernel, &fit_uname_config,
923 IH_ARCH_DEFAULT, IH_TYPE_KERNEL,
924 BOOTSTAGE_ID_FIT_KERNEL_START,
925 FIT_LOAD_IGNORED, os_data, os_len);
926 if (os_noffset < 0)
927 return NULL;
928
929 images->fit_hdr_os = map_sysmem(img_addr, 0);
930 images->fit_uname_os = fit_uname_kernel;
931 images->fit_uname_cfg = fit_uname_config;
932 images->fit_noffset_os = os_noffset;
933 break;
934 #endif
935 #ifdef CONFIG_ANDROID_BOOT_IMAGE
936 case IMAGE_FORMAT_ANDROID:
937 printf("## Booting Android Image at 0x%08lx ...\n", img_addr);
938 if (android_image_get_kernel(buf, images->verify,
939 os_data, os_len))
940 return NULL;
941 break;
942 #endif
943 default:
944 printf("Wrong Image Format for %s command\n", cmdtp->name);
945 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
946 return NULL;
947 }
948
949 debug(" kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
950 *os_data, *os_len, *os_len);
951
952 return buf;
953 }
954
955 /**
956 * switch_to_non_secure_mode() - switch to non-secure mode
957 *
958 * This routine is overridden by architectures requiring this feature.
959 */
switch_to_non_secure_mode(void)960 void __weak switch_to_non_secure_mode(void)
961 {
962 }
963
964 #else /* USE_HOSTCC */
965
966 #if defined(CONFIG_FIT_SIGNATURE)
bootm_host_load_image(const void * fit,int req_image_type,int cfg_noffset)967 static int bootm_host_load_image(const void *fit, int req_image_type,
968 int cfg_noffset)
969 {
970 const char *fit_uname_config = NULL;
971 ulong data, len;
972 bootm_headers_t images;
973 int noffset;
974 ulong load_end;
975 uint8_t image_type;
976 uint8_t imape_comp;
977 void *load_buf;
978 int ret;
979
980 fit_uname_config = fdt_get_name(fit, cfg_noffset, NULL);
981 memset(&images, '\0', sizeof(images));
982 images.verify = 1;
983 noffset = fit_image_load(&images, (ulong)fit,
984 NULL, &fit_uname_config,
985 IH_ARCH_DEFAULT, req_image_type, -1,
986 FIT_LOAD_IGNORED, &data, &len);
987 if (noffset < 0)
988 return noffset;
989 if (fit_image_get_type(fit, noffset, &image_type)) {
990 puts("Can't get image type!\n");
991 return -EINVAL;
992 }
993
994 if (fit_image_get_comp(fit, noffset, &imape_comp)) {
995 puts("Can't get image compression!\n");
996 return -EINVAL;
997 }
998
999 /* Allow the image to expand by a factor of 4, should be safe */
1000 load_buf = malloc((1 << 20) + len * 4);
1001 ret = image_decomp(imape_comp, 0, data, image_type, load_buf,
1002 (void *)data, len, CONFIG_SYS_BOOTM_LEN,
1003 &load_end);
1004 free(load_buf);
1005
1006 if (ret) {
1007 ret = handle_decomp_error(imape_comp, load_end - 0, ret);
1008 if (ret != BOOTM_ERR_UNIMPLEMENTED)
1009 return ret;
1010 }
1011
1012 return 0;
1013 }
1014
bootm_host_load_images(const void * fit,int cfg_noffset)1015 int bootm_host_load_images(const void *fit, int cfg_noffset)
1016 {
1017 static uint8_t image_types[] = {
1018 IH_TYPE_KERNEL,
1019 IH_TYPE_FLATDT,
1020 IH_TYPE_RAMDISK,
1021 };
1022 int err = 0;
1023 int i;
1024
1025 for (i = 0; i < ARRAY_SIZE(image_types); i++) {
1026 int ret;
1027
1028 ret = bootm_host_load_image(fit, image_types[i], cfg_noffset);
1029 if (!err && ret && ret != -ENOENT)
1030 err = ret;
1031 }
1032
1033 /* Return the first error we found */
1034 return err;
1035 }
1036 #endif
1037
1038 #endif /* ndef USE_HOSTCC */
1039