Merge branch 'rmobile' of git://www.denx.de/git/u-boot-sh
[platform/kernel/u-boot.git] / common / bootm.c
1 /*
2  * (C) Copyright 2000-2009
3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4  *
5  * SPDX-License-Identifier:     GPL-2.0+
6  */
7
8 #ifndef USE_HOSTCC
9 #include <common.h>
10 #include <bootstage.h>
11 #include <bzlib.h>
12 #include <errno.h>
13 #include <fdt_support.h>
14 #include <lmb.h>
15 #include <malloc.h>
16 #include <asm/io.h>
17 #include <linux/lzo.h>
18 #include <lzma/LzmaTypes.h>
19 #include <lzma/LzmaDec.h>
20 #include <lzma/LzmaTools.h>
21 #if defined(CONFIG_CMD_USB)
22 #include <usb.h>
23 #endif
24 #else
25 #include "mkimage.h"
26 #endif
27
28 #include <command.h>
29 #include <bootm.h>
30 #include <image.h>
31
32 #ifndef CONFIG_SYS_BOOTM_LEN
33 /* use 8MByte as default max gunzip size */
34 #define CONFIG_SYS_BOOTM_LEN    0x800000
35 #endif
36
37 #define IH_INITRD_ARCH IH_ARCH_DEFAULT
38
39 #ifndef USE_HOSTCC
40
41 DECLARE_GLOBAL_DATA_PTR;
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
47 #ifdef CONFIG_LMB
48 static void boot_start_lmb(bootm_headers_t *images)
49 {
50         ulong           mem_start;
51         phys_size_t     mem_size;
52
53         lmb_init(&images->lmb);
54
55         mem_start = getenv_bootm_low();
56         mem_size = getenv_bootm_size();
57
58         lmb_add(&images->lmb, (phys_addr_t)mem_start, mem_size);
59
60         arch_lmb_reserve(&images->lmb);
61         board_lmb_reserve(&images->lmb);
62 }
63 #else
64 #define lmb_reserve(lmb, base, size)
65 static inline void boot_start_lmb(bootm_headers_t *images) { }
66 #endif
67
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 = getenv_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
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 defined(CONFIG_IMAGE_FORMAT_LEGACY)
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 defined(CONFIG_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 = IH_COMP_NONE;
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 defined(CONFIG_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                 images.os.load = images.os.image_start;
200                 images.ep += images.os.load;
201         }
202
203         images.os.start = (ulong)os_hdr;
204
205         return 0;
206 }
207
208 static int bootm_find_ramdisk(int flag, int argc, char * const argv[])
209 {
210         int ret;
211
212         /* find ramdisk */
213         ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
214                                &images.rd_start, &images.rd_end);
215         if (ret) {
216                 puts("Ramdisk image is corrupt or invalid\n");
217                 return 1;
218         }
219
220         return 0;
221 }
222
223 #if defined(CONFIG_OF_LIBFDT)
224 static int bootm_find_fdt(int flag, int argc, char * const argv[])
225 {
226         int ret;
227
228         /* find flattened device tree */
229         ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images,
230                            &images.ft_addr, &images.ft_len);
231         if (ret) {
232                 puts("Could not find a valid device tree\n");
233                 return 1;
234         }
235
236         set_working_fdt_addr(images.ft_addr);
237
238         return 0;
239 }
240 #endif
241
242 int bootm_find_ramdisk_fdt(int flag, int argc, char * const argv[])
243 {
244         if (bootm_find_ramdisk(flag, argc, argv))
245                 return 1;
246
247 #if defined(CONFIG_OF_LIBFDT)
248         if (bootm_find_fdt(flag, argc, argv))
249                 return 1;
250 #endif
251
252         return 0;
253 }
254
255 static int bootm_find_other(cmd_tbl_t *cmdtp, int flag, int argc,
256                             char * const argv[])
257 {
258         if (((images.os.type == IH_TYPE_KERNEL) ||
259              (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
260              (images.os.type == IH_TYPE_MULTI)) &&
261             (images.os.os == IH_OS_LINUX ||
262                  images.os.os == IH_OS_VXWORKS))
263                 return bootm_find_ramdisk_fdt(flag, argc, argv);
264
265         return 0;
266 }
267 #endif /* USE_HOSTCC */
268
269 /**
270  * decomp_image() - decompress the operating system
271  *
272  * @comp:       Compression algorithm that is used (IH_COMP_...)
273  * @load:       Destination load address in U-Boot memory
274  * @image_start Image start address (where we are decompressing from)
275  * @type:       OS type (IH_OS_...)
276  * @load_bug:   Place to decompress to
277  * @image_buf:  Address to decompress from
278  * @return 0 if OK, -ve on error (BOOTM_ERR_...)
279  */
280 static int decomp_image(int comp, ulong load, ulong image_start, int type,
281                         void *load_buf, void *image_buf, ulong image_len,
282                         ulong *load_end)
283 {
284         const char *type_name = genimg_get_type_name(type);
285         __attribute__((unused)) uint unc_len = CONFIG_SYS_BOOTM_LEN;
286
287         *load_end = load;
288         switch (comp) {
289         case IH_COMP_NONE:
290                 if (load == image_start) {
291                         printf("   XIP %s ... ", type_name);
292                 } else {
293                         printf("   Loading %s ... ", type_name);
294                         memmove_wd(load_buf, image_buf, image_len, CHUNKSZ);
295                 }
296                 *load_end = load + image_len;
297                 break;
298 #ifdef CONFIG_GZIP
299         case IH_COMP_GZIP:
300                 printf("   Uncompressing %s ... ", type_name);
301                 if (gunzip(load_buf, unc_len, image_buf, &image_len) != 0) {
302                         puts("GUNZIP: uncompress, out-of-mem or overwrite error - must RESET board to recover\n");
303                         return BOOTM_ERR_RESET;
304                 }
305
306                 *load_end = load + image_len;
307                 break;
308 #endif /* CONFIG_GZIP */
309 #ifdef CONFIG_BZIP2
310         case IH_COMP_BZIP2:
311                 printf("   Uncompressing %s ... ", type_name);
312                 /*
313                  * If we've got less than 4 MB of malloc() space,
314                  * use slower decompression algorithm which requires
315                  * at most 2300 KB of memory.
316                  */
317                 int i = BZ2_bzBuffToBuffDecompress(load_buf, &unc_len,
318                         image_buf, image_len,
319                         CONFIG_SYS_MALLOC_LEN < (4096 * 1024), 0);
320                 if (i != BZ_OK) {
321                         printf("BUNZIP2: uncompress or overwrite error %d - must RESET board to recover\n",
322                                i);
323                         return BOOTM_ERR_RESET;
324                 }
325
326                 *load_end = load + unc_len;
327                 break;
328 #endif /* CONFIG_BZIP2 */
329 #ifdef CONFIG_LZMA
330         case IH_COMP_LZMA: {
331                 SizeT lzma_len = unc_len;
332                 int ret;
333
334                 printf("   Uncompressing %s ... ", type_name);
335
336                 ret = lzmaBuffToBuffDecompress(load_buf, &lzma_len,
337                                                image_buf, image_len);
338                 unc_len = lzma_len;
339                 if (ret != SZ_OK) {
340                         printf("LZMA: uncompress or overwrite error %d - must RESET board to recover\n",
341                                ret);
342                         bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
343                         return BOOTM_ERR_RESET;
344                 }
345                 *load_end = load + unc_len;
346                 break;
347         }
348 #endif /* CONFIG_LZMA */
349 #ifdef CONFIG_LZO
350         case IH_COMP_LZO: {
351                 size_t size = unc_len;
352                 int ret;
353
354                 printf("   Uncompressing %s ... ", type_name);
355
356                 ret = lzop_decompress(image_buf, image_len, load_buf, &size);
357                 if (ret != LZO_E_OK) {
358                         printf("LZO: uncompress or overwrite error %d - must RESET board to recover\n",
359                                ret);
360                         return BOOTM_ERR_RESET;
361                 }
362
363                 *load_end = load + size;
364                 break;
365         }
366 #endif /* CONFIG_LZO */
367         default:
368                 printf("Unimplemented compression type %d\n", comp);
369                 return BOOTM_ERR_UNIMPLEMENTED;
370         }
371
372         puts("OK\n");
373
374         return 0;
375 }
376
377 #ifndef USE_HOSTCC
378 static int bootm_load_os(bootm_headers_t *images, unsigned long *load_end,
379                          int boot_progress)
380 {
381         image_info_t os = images->os;
382         ulong load = os.load;
383         ulong blob_start = os.start;
384         ulong blob_end = os.end;
385         ulong image_start = os.image_start;
386         ulong image_len = os.image_len;
387         bool no_overlap;
388         void *load_buf, *image_buf;
389         int err;
390
391         load_buf = map_sysmem(load, 0);
392         image_buf = map_sysmem(os.image_start, image_len);
393         err = decomp_image(os.comp, load, os.image_start, os.type, load_buf,
394                            image_buf, image_len, load_end);
395         if (err) {
396                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
397                 return err;
398         }
399         flush_cache(load, (*load_end - load) * sizeof(ulong));
400
401         debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, *load_end);
402         bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
403
404         no_overlap = (os.comp == IH_COMP_NONE && load == image_start);
405
406         if (!no_overlap && (load < blob_end) && (*load_end > blob_start)) {
407                 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
408                       blob_start, blob_end);
409                 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
410                       *load_end);
411
412                 /* Check what type of image this is. */
413                 if (images->legacy_hdr_valid) {
414                         if (image_get_type(&images->legacy_hdr_os_copy)
415                                         == IH_TYPE_MULTI)
416                                 puts("WARNING: legacy format multi component image overwritten\n");
417                         return BOOTM_ERR_OVERLAP;
418                 } else {
419                         puts("ERROR: new format image overwritten - must RESET the board to recover\n");
420                         bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
421                         return BOOTM_ERR_RESET;
422                 }
423         }
424
425         return 0;
426 }
427
428 /**
429  * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot
430  *
431  * @return interrupt flag (0 if interrupts were disabled, non-zero if they were
432  *      enabled)
433  */
434 ulong bootm_disable_interrupts(void)
435 {
436         ulong iflag;
437
438         /*
439          * We have reached the point of no return: we are going to
440          * overwrite all exception vector code, so we cannot easily
441          * recover from any failures any more...
442          */
443         iflag = disable_interrupts();
444 #ifdef CONFIG_NETCONSOLE
445         /* Stop the ethernet stack if NetConsole could have left it up */
446         eth_halt();
447         eth_unregister(eth_get_dev());
448 #endif
449
450 #if defined(CONFIG_CMD_USB)
451         /*
452          * turn off USB to prevent the host controller from writing to the
453          * SDRAM while Linux is booting. This could happen (at least for OHCI
454          * controller), because the HCCA (Host Controller Communication Area)
455          * lies within the SDRAM and the host controller writes continously to
456          * this area (as busmaster!). The HccaFrameNumber is for example
457          * updated every 1 ms within the HCCA structure in SDRAM! For more
458          * details see the OpenHCI specification.
459          */
460         usb_stop();
461 #endif
462         return iflag;
463 }
464
465 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
466
467 #define CONSOLE_ARG     "console="
468 #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1)
469
470 static void fixup_silent_linux(void)
471 {
472         char *buf;
473         const char *env_val;
474         char *cmdline = getenv("bootargs");
475         int want_silent;
476
477         /*
478          * Only fix cmdline when requested. The environment variable can be:
479          *
480          *      no - we never fixup
481          *      yes - we always fixup
482          *      unset - we rely on the console silent flag
483          */
484         want_silent = getenv_yesno("silent_linux");
485         if (want_silent == 0)
486                 return;
487         else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT))
488                 return;
489
490         debug("before silent fix-up: %s\n", cmdline);
491         if (cmdline && (cmdline[0] != '\0')) {
492                 char *start = strstr(cmdline, CONSOLE_ARG);
493
494                 /* Allocate space for maximum possible new command line */
495                 buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1);
496                 if (!buf) {
497                         debug("%s: out of memory\n", __func__);
498                         return;
499                 }
500
501                 if (start) {
502                         char *end = strchr(start, ' ');
503                         int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN;
504
505                         strncpy(buf, cmdline, num_start_bytes);
506                         if (end)
507                                 strcpy(buf + num_start_bytes, end);
508                         else
509                                 buf[num_start_bytes] = '\0';
510                 } else {
511                         sprintf(buf, "%s %s", cmdline, CONSOLE_ARG);
512                 }
513                 env_val = buf;
514         } else {
515                 buf = NULL;
516                 env_val = CONSOLE_ARG;
517         }
518
519         setenv("bootargs", env_val);
520         debug("after silent fix-up: %s\n", env_val);
521         free(buf);
522 }
523 #endif /* CONFIG_SILENT_CONSOLE */
524
525 /**
526  * Execute selected states of the bootm command.
527  *
528  * Note the arguments to this state must be the first argument, Any 'bootm'
529  * or sub-command arguments must have already been taken.
530  *
531  * Note that if states contains more than one flag it MUST contain
532  * BOOTM_STATE_START, since this handles and consumes the command line args.
533  *
534  * Also note that aside from boot_os_fn functions and bootm_load_os no other
535  * functions we store the return value of in 'ret' may use a negative return
536  * value, without special handling.
537  *
538  * @param cmdtp         Pointer to bootm command table entry
539  * @param flag          Command flags (CMD_FLAG_...)
540  * @param argc          Number of subcommand arguments (0 = no arguments)
541  * @param argv          Arguments
542  * @param states        Mask containing states to run (BOOTM_STATE_...)
543  * @param images        Image header information
544  * @param boot_progress 1 to show boot progress, 0 to not do this
545  * @return 0 if ok, something else on error. Some errors will cause this
546  *      function to perform a reboot! If states contains BOOTM_STATE_OS_GO
547  *      then the intent is to boot an OS, so this function will not return
548  *      unless the image type is standalone.
549  */
550 int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
551                     int states, bootm_headers_t *images, int boot_progress)
552 {
553         boot_os_fn *boot_fn;
554         ulong iflag = 0;
555         int ret = 0, need_boot_fn;
556
557         images->state |= states;
558
559         /*
560          * Work through the states and see how far we get. We stop on
561          * any error.
562          */
563         if (states & BOOTM_STATE_START)
564                 ret = bootm_start(cmdtp, flag, argc, argv);
565
566         if (!ret && (states & BOOTM_STATE_FINDOS))
567                 ret = bootm_find_os(cmdtp, flag, argc, argv);
568
569         if (!ret && (states & BOOTM_STATE_FINDOTHER)) {
570                 ret = bootm_find_other(cmdtp, flag, argc, argv);
571                 argc = 0;       /* consume the args */
572         }
573
574         /* Load the OS */
575         if (!ret && (states & BOOTM_STATE_LOADOS)) {
576                 ulong load_end;
577
578                 iflag = bootm_disable_interrupts();
579                 ret = bootm_load_os(images, &load_end, 0);
580                 if (ret == 0)
581                         lmb_reserve(&images->lmb, images->os.load,
582                                     (load_end - images->os.load));
583                 else if (ret && ret != BOOTM_ERR_OVERLAP)
584                         goto err;
585                 else if (ret == BOOTM_ERR_OVERLAP)
586                         ret = 0;
587 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
588                 if (images->os.os == IH_OS_LINUX)
589                         fixup_silent_linux();
590 #endif
591         }
592
593         /* Relocate the ramdisk */
594 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
595         if (!ret && (states & BOOTM_STATE_RAMDISK)) {
596                 ulong rd_len = images->rd_end - images->rd_start;
597
598                 ret = boot_ramdisk_high(&images->lmb, images->rd_start,
599                         rd_len, &images->initrd_start, &images->initrd_end);
600                 if (!ret) {
601                         setenv_hex("initrd_start", images->initrd_start);
602                         setenv_hex("initrd_end", images->initrd_end);
603                 }
604         }
605 #endif
606 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_LMB)
607         if (!ret && (states & BOOTM_STATE_FDT)) {
608                 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
609                 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
610                                         &images->ft_len);
611         }
612 #endif
613
614         /* From now on, we need the OS boot function */
615         if (ret)
616                 return ret;
617         boot_fn = bootm_os_get_boot_func(images->os.os);
618         need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE |
619                         BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP |
620                         BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO);
621         if (boot_fn == NULL && need_boot_fn) {
622                 if (iflag)
623                         enable_interrupts();
624                 printf("ERROR: booting os '%s' (%d) is not supported\n",
625                        genimg_get_os_name(images->os.os), images->os.os);
626                 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
627                 return 1;
628         }
629
630         /* Call various other states that are not generally used */
631         if (!ret && (states & BOOTM_STATE_OS_CMDLINE))
632                 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images);
633         if (!ret && (states & BOOTM_STATE_OS_BD_T))
634                 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
635         if (!ret && (states & BOOTM_STATE_OS_PREP))
636                 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images);
637
638 #ifdef CONFIG_TRACE
639         /* Pretend to run the OS, then run a user command */
640         if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) {
641                 char *cmd_list = getenv("fakegocmd");
642
643                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO,
644                                 images, boot_fn);
645                 if (!ret && cmd_list)
646                         ret = run_command_list(cmd_list, -1, flag);
647         }
648 #endif
649
650         /* Check for unsupported subcommand. */
651         if (ret) {
652                 puts("subcommand not supported\n");
653                 return ret;
654         }
655
656         /* Now run the OS! We hope this doesn't return */
657         if (!ret && (states & BOOTM_STATE_OS_GO))
658                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO,
659                                 images, boot_fn);
660
661         /* Deal with any fallout */
662 err:
663         if (iflag)
664                 enable_interrupts();
665
666         if (ret == BOOTM_ERR_UNIMPLEMENTED)
667                 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
668         else if (ret == BOOTM_ERR_RESET)
669                 do_reset(cmdtp, flag, argc, argv);
670
671         return ret;
672 }
673
674 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
675 /**
676  * image_get_kernel - verify legacy format kernel image
677  * @img_addr: in RAM address of the legacy format image to be verified
678  * @verify: data CRC verification flag
679  *
680  * image_get_kernel() verifies legacy image integrity and returns pointer to
681  * legacy image header if image verification was completed successfully.
682  *
683  * returns:
684  *     pointer to a legacy image header if valid image was found
685  *     otherwise return NULL
686  */
687 static image_header_t *image_get_kernel(ulong img_addr, int verify)
688 {
689         image_header_t *hdr = (image_header_t *)img_addr;
690
691         if (!image_check_magic(hdr)) {
692                 puts("Bad Magic Number\n");
693                 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
694                 return NULL;
695         }
696         bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
697
698         if (!image_check_hcrc(hdr)) {
699                 puts("Bad Header Checksum\n");
700                 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
701                 return NULL;
702         }
703
704         bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
705         image_print_contents(hdr);
706
707         if (verify) {
708                 puts("   Verifying Checksum ... ");
709                 if (!image_check_dcrc(hdr)) {
710                         printf("Bad Data CRC\n");
711                         bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
712                         return NULL;
713                 }
714                 puts("OK\n");
715         }
716         bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
717
718         if (!image_check_target_arch(hdr)) {
719                 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
720                 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
721                 return NULL;
722         }
723         return hdr;
724 }
725 #endif
726
727 /**
728  * boot_get_kernel - find kernel image
729  * @os_data: pointer to a ulong variable, will hold os data start address
730  * @os_len: pointer to a ulong variable, will hold os data length
731  *
732  * boot_get_kernel() tries to find a kernel image, verifies its integrity
733  * and locates kernel data.
734  *
735  * returns:
736  *     pointer to image header if valid image was found, plus kernel start
737  *     address and length, otherwise NULL
738  */
739 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
740                                    char * const argv[], bootm_headers_t *images,
741                                    ulong *os_data, ulong *os_len)
742 {
743 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
744         image_header_t  *hdr;
745 #endif
746         ulong           img_addr;
747         const void *buf;
748         const char      *fit_uname_config = NULL;
749         const char      *fit_uname_kernel = NULL;
750 #if defined(CONFIG_FIT)
751         int             os_noffset;
752 #endif
753
754         img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0],
755                                               &fit_uname_config,
756                                               &fit_uname_kernel);
757
758         bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
759
760         /* copy from dataflash if needed */
761         img_addr = genimg_get_image(img_addr);
762
763         /* check image type, for FIT images get FIT kernel node */
764         *os_data = *os_len = 0;
765         buf = map_sysmem(img_addr, 0);
766         switch (genimg_get_format(buf)) {
767 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
768         case IMAGE_FORMAT_LEGACY:
769                 printf("## Booting kernel from Legacy Image at %08lx ...\n",
770                        img_addr);
771                 hdr = image_get_kernel(img_addr, images->verify);
772                 if (!hdr)
773                         return NULL;
774                 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
775
776                 /* get os_data and os_len */
777                 switch (image_get_type(hdr)) {
778                 case IH_TYPE_KERNEL:
779                 case IH_TYPE_KERNEL_NOLOAD:
780                         *os_data = image_get_data(hdr);
781                         *os_len = image_get_data_size(hdr);
782                         break;
783                 case IH_TYPE_MULTI:
784                         image_multi_getimg(hdr, 0, os_data, os_len);
785                         break;
786                 case IH_TYPE_STANDALONE:
787                         *os_data = image_get_data(hdr);
788                         *os_len = image_get_data_size(hdr);
789                         break;
790                 default:
791                         printf("Wrong Image Type for %s command\n",
792                                cmdtp->name);
793                         bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
794                         return NULL;
795                 }
796
797                 /*
798                  * copy image header to allow for image overwrites during
799                  * kernel decompression.
800                  */
801                 memmove(&images->legacy_hdr_os_copy, hdr,
802                         sizeof(image_header_t));
803
804                 /* save pointer to image header */
805                 images->legacy_hdr_os = hdr;
806
807                 images->legacy_hdr_valid = 1;
808                 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
809                 break;
810 #endif
811 #if defined(CONFIG_FIT)
812         case IMAGE_FORMAT_FIT:
813                 os_noffset = fit_image_load(images, img_addr,
814                                 &fit_uname_kernel, &fit_uname_config,
815                                 IH_ARCH_DEFAULT, IH_TYPE_KERNEL,
816                                 BOOTSTAGE_ID_FIT_KERNEL_START,
817                                 FIT_LOAD_IGNORED, os_data, os_len);
818                 if (os_noffset < 0)
819                         return NULL;
820
821                 images->fit_hdr_os = map_sysmem(img_addr, 0);
822                 images->fit_uname_os = fit_uname_kernel;
823                 images->fit_uname_cfg = fit_uname_config;
824                 images->fit_noffset_os = os_noffset;
825                 break;
826 #endif
827 #ifdef CONFIG_ANDROID_BOOT_IMAGE
828         case IMAGE_FORMAT_ANDROID:
829                 printf("## Booting Android Image at 0x%08lx ...\n", img_addr);
830                 if (android_image_get_kernel(buf, images->verify,
831                                              os_data, os_len))
832                         return NULL;
833                 break;
834 #endif
835         default:
836                 printf("Wrong Image Format for %s command\n", cmdtp->name);
837                 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
838                 return NULL;
839         }
840
841         debug("   kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
842               *os_data, *os_len, *os_len);
843
844         return buf;
845 }
846 #else /* USE_HOSTCC */
847
848 void memmove_wd(void *to, void *from, size_t len, ulong chunksz)
849 {
850         memmove(to, from, len);
851 }
852
853 static int bootm_host_load_image(const void *fit, int req_image_type)
854 {
855         const char *fit_uname_config = NULL;
856         ulong data, len;
857         bootm_headers_t images;
858         int noffset;
859         ulong load_end;
860         uint8_t image_type;
861         uint8_t imape_comp;
862         void *load_buf;
863         int ret;
864
865         memset(&images, '\0', sizeof(images));
866         images.verify = 1;
867         noffset = fit_image_load(&images, (ulong)fit,
868                 NULL, &fit_uname_config,
869                 IH_ARCH_DEFAULT, req_image_type, -1,
870                 FIT_LOAD_IGNORED, &data, &len);
871         if (noffset < 0)
872                 return noffset;
873         if (fit_image_get_type(fit, noffset, &image_type)) {
874                 puts("Can't get image type!\n");
875                 return -EINVAL;
876         }
877
878         if (fit_image_get_comp(fit, noffset, &imape_comp)) {
879                 puts("Can't get image compression!\n");
880                 return -EINVAL;
881         }
882
883         /* Allow the image to expand by a factor of 4, should be safe */
884         load_buf = malloc((1 << 20) + len * 4);
885         ret = decomp_image(imape_comp, 0, data, image_type, load_buf,
886                            (void *)data, len, &load_end);
887         free(load_buf);
888         if (ret && ret != BOOTM_ERR_UNIMPLEMENTED)
889                 return ret;
890
891         return 0;
892 }
893
894 int bootm_host_load_images(const void *fit, int cfg_noffset)
895 {
896         static uint8_t image_types[] = {
897                 IH_TYPE_KERNEL,
898                 IH_TYPE_FLATDT,
899                 IH_TYPE_RAMDISK,
900         };
901         int err = 0;
902         int i;
903
904         for (i = 0; i < ARRAY_SIZE(image_types); i++) {
905                 int ret;
906
907                 ret = bootm_host_load_image(fit, image_types[i]);
908                 if (!err && ret && ret != -ENOENT)
909                         err = ret;
910         }
911
912         /* Return the first error we found */
913         return err;
914 }
915
916 #endif /* ndef USE_HOSTCC */