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