Merge git://git.denx.de/u-boot-video
[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 <mapmem.h>
17 #include <asm/io.h>
18 #include <linux/lzo.h>
19 #include <lzma/LzmaTypes.h>
20 #include <lzma/LzmaDec.h>
21 #include <lzma/LzmaTools.h>
22 #if defined(CONFIG_CMD_USB)
23 #include <usb.h>
24 #endif
25 #else
26 #include "mkimage.h"
27 #endif
28
29 #include <command.h>
30 #include <bootm.h>
31 #include <image.h>
32
33 #ifndef CONFIG_SYS_BOOTM_LEN
34 /* use 8MByte as default max gunzip size */
35 #define CONFIG_SYS_BOOTM_LEN    0x800000
36 #endif
37
38 #define IH_INITRD_ARCH IH_ARCH_DEFAULT
39
40 #ifndef USE_HOSTCC
41
42 DECLARE_GLOBAL_DATA_PTR;
43
44 bootm_headers_t images;         /* pointers to os/initrd/fdt images */
45
46 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
47                                    char * const argv[], bootm_headers_t *images,
48                                    ulong *os_data, ulong *os_len);
49
50 #ifdef CONFIG_LMB
51 static void boot_start_lmb(bootm_headers_t *images)
52 {
53         ulong           mem_start;
54         phys_size_t     mem_size;
55
56         lmb_init(&images->lmb);
57
58         mem_start = env_get_bootm_low();
59         mem_size = env_get_bootm_size();
60
61         lmb_add(&images->lmb, (phys_addr_t)mem_start, mem_size);
62
63         arch_lmb_reserve(&images->lmb);
64         board_lmb_reserve(&images->lmb);
65 }
66 #else
67 #define lmb_reserve(lmb, base, size)
68 static inline void boot_start_lmb(bootm_headers_t *images) { }
69 #endif
70
71 static int bootm_start(cmd_tbl_t *cmdtp, int flag, int argc,
72                        char * const argv[])
73 {
74         memset((void *)&images, 0, sizeof(images));
75         images.verify = env_get_yesno("verify");
76
77         boot_start_lmb(&images);
78
79         bootstage_mark_name(BOOTSTAGE_ID_BOOTM_START, "bootm_start");
80         images.state = BOOTM_STATE_START;
81
82         return 0;
83 }
84
85 static int bootm_find_os(cmd_tbl_t *cmdtp, int flag, int argc,
86                          char * const argv[])
87 {
88         const void *os_hdr;
89         bool ep_found = false;
90         int ret;
91
92         /* get kernel image header, start address and length */
93         os_hdr = boot_get_kernel(cmdtp, flag, argc, argv,
94                         &images, &images.os.image_start, &images.os.image_len);
95         if (images.os.image_len == 0) {
96                 puts("ERROR: can't get kernel image!\n");
97                 return 1;
98         }
99
100         /* get image parameters */
101         switch (genimg_get_format(os_hdr)) {
102 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
103         case IMAGE_FORMAT_LEGACY:
104                 images.os.type = image_get_type(os_hdr);
105                 images.os.comp = image_get_comp(os_hdr);
106                 images.os.os = image_get_os(os_hdr);
107
108                 images.os.end = image_get_image_end(os_hdr);
109                 images.os.load = image_get_load(os_hdr);
110                 images.os.arch = image_get_arch(os_hdr);
111                 break;
112 #endif
113 #if IMAGE_ENABLE_FIT
114         case IMAGE_FORMAT_FIT:
115                 if (fit_image_get_type(images.fit_hdr_os,
116                                        images.fit_noffset_os,
117                                        &images.os.type)) {
118                         puts("Can't get image type!\n");
119                         bootstage_error(BOOTSTAGE_ID_FIT_TYPE);
120                         return 1;
121                 }
122
123                 if (fit_image_get_comp(images.fit_hdr_os,
124                                        images.fit_noffset_os,
125                                        &images.os.comp)) {
126                         puts("Can't get image compression!\n");
127                         bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION);
128                         return 1;
129                 }
130
131                 if (fit_image_get_os(images.fit_hdr_os, images.fit_noffset_os,
132                                      &images.os.os)) {
133                         puts("Can't get image OS!\n");
134                         bootstage_error(BOOTSTAGE_ID_FIT_OS);
135                         return 1;
136                 }
137
138                 if (fit_image_get_arch(images.fit_hdr_os,
139                                        images.fit_noffset_os,
140                                        &images.os.arch)) {
141                         puts("Can't get image ARCH!\n");
142                         return 1;
143                 }
144
145                 images.os.end = fit_get_end(images.fit_hdr_os);
146
147                 if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os,
148                                        &images.os.load)) {
149                         puts("Can't get image load address!\n");
150                         bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR);
151                         return 1;
152                 }
153                 break;
154 #endif
155 #ifdef CONFIG_ANDROID_BOOT_IMAGE
156         case IMAGE_FORMAT_ANDROID:
157                 images.os.type = IH_TYPE_KERNEL;
158                 images.os.comp = IH_COMP_NONE;
159                 images.os.os = IH_OS_LINUX;
160
161                 images.os.end = android_image_get_end(os_hdr);
162                 images.os.load = android_image_get_kload(os_hdr);
163                 images.ep = images.os.load;
164                 ep_found = true;
165                 break;
166 #endif
167         default:
168                 puts("ERROR: unknown image format type!\n");
169                 return 1;
170         }
171
172         /* If we have a valid setup.bin, we will use that for entry (x86) */
173         if (images.os.arch == IH_ARCH_I386 ||
174             images.os.arch == IH_ARCH_X86_64) {
175                 ulong len;
176
177                 ret = boot_get_setup(&images, IH_ARCH_I386, &images.ep, &len);
178                 if (ret < 0 && ret != -ENOENT) {
179                         puts("Could not find a valid setup.bin for x86\n");
180                         return 1;
181                 }
182                 /* Kernel entry point is the setup.bin */
183         } else if (images.legacy_hdr_valid) {
184                 images.ep = image_get_ep(&images.legacy_hdr_os_copy);
185 #if IMAGE_ENABLE_FIT
186         } else if (images.fit_uname_os) {
187                 int ret;
188
189                 ret = fit_image_get_entry(images.fit_hdr_os,
190                                           images.fit_noffset_os, &images.ep);
191                 if (ret) {
192                         puts("Can't get entry point property!\n");
193                         return 1;
194                 }
195 #endif
196         } else if (!ep_found) {
197                 puts("Could not find kernel entry point!\n");
198                 return 1;
199         }
200
201         if (images.os.type == IH_TYPE_KERNEL_NOLOAD) {
202                 images.os.load = images.os.image_start;
203                 images.ep += images.os.load;
204         }
205
206         images.os.start = map_to_sysmem(os_hdr);
207
208         return 0;
209 }
210
211 /**
212  * bootm_find_images - wrapper to find and locate various images
213  * @flag: Ignored Argument
214  * @argc: command argument count
215  * @argv: command argument list
216  *
217  * boot_find_images() will attempt to load an available ramdisk,
218  * flattened device tree, as well as specifically marked
219  * "loadable" images (loadables are FIT only)
220  *
221  * Note: bootm_find_images will skip an image if it is not found
222  *
223  * @return:
224  *     0, if all existing images were loaded correctly
225  *     1, if an image is found but corrupted, or invalid
226  */
227 int bootm_find_images(int flag, int argc, char * const argv[])
228 {
229         int ret;
230
231         /* find ramdisk */
232         ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
233                                &images.rd_start, &images.rd_end);
234         if (ret) {
235                 puts("Ramdisk image is corrupt or invalid\n");
236                 return 1;
237         }
238
239 #if IMAGE_ENABLE_OF_LIBFDT
240         /* find flattened device tree */
241         ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images,
242                            &images.ft_addr, &images.ft_len);
243         if (ret) {
244                 puts("Could not find a valid device tree\n");
245                 return 1;
246         }
247         set_working_fdt_addr((ulong)images.ft_addr);
248 #endif
249
250 #if IMAGE_ENABLE_FIT
251 #if defined(CONFIG_FPGA)
252         /* find bitstreams */
253         ret = boot_get_fpga(argc, argv, &images, IH_ARCH_DEFAULT,
254                             NULL, NULL);
255         if (ret) {
256                 printf("FPGA image is corrupted or invalid\n");
257                 return 1;
258         }
259 #endif
260
261         /* find all of the loadables */
262         ret = boot_get_loadable(argc, argv, &images, IH_ARCH_DEFAULT,
263                                NULL, NULL);
264         if (ret) {
265                 printf("Loadable(s) is corrupt or invalid\n");
266                 return 1;
267         }
268 #endif
269
270         return 0;
271 }
272
273 static int bootm_find_other(cmd_tbl_t *cmdtp, int flag, int argc,
274                             char * const argv[])
275 {
276         if (((images.os.type == IH_TYPE_KERNEL) ||
277              (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
278              (images.os.type == IH_TYPE_MULTI)) &&
279             (images.os.os == IH_OS_LINUX ||
280                  images.os.os == IH_OS_VXWORKS))
281                 return bootm_find_images(flag, argc, argv);
282
283         return 0;
284 }
285 #endif /* USE_HOSTC */
286
287 /**
288  * print_decomp_msg() - Print a suitable decompression/loading message
289  *
290  * @type:       OS type (IH_OS_...)
291  * @comp_type:  Compression type being used (IH_COMP_...)
292  * @is_xip:     true if the load address matches the image start
293  */
294 static void print_decomp_msg(int comp_type, int type, bool is_xip)
295 {
296         const char *name = genimg_get_type_name(type);
297
298         if (comp_type == IH_COMP_NONE)
299                 printf("   %s %s ... ", is_xip ? "XIP" : "Loading", name);
300         else
301                 printf("   Uncompressing %s ... ", name);
302 }
303
304 /**
305  * handle_decomp_error() - display a decompression error
306  *
307  * This function tries to produce a useful message. In the case where the
308  * uncompressed size is the same as the available space, we can assume that
309  * the image is too large for the buffer.
310  *
311  * @comp_type:          Compression type being used (IH_COMP_...)
312  * @uncomp_size:        Number of bytes uncompressed
313  * @unc_len:            Amount of space available for decompression
314  * @ret:                Error code to report
315  * @return BOOTM_ERR_RESET, indicating that the board must be reset
316  */
317 static int handle_decomp_error(int comp_type, size_t uncomp_size,
318                                size_t unc_len, int ret)
319 {
320         const char *name = genimg_get_comp_name(comp_type);
321
322         if (uncomp_size >= unc_len)
323                 printf("Image too large: increase CONFIG_SYS_BOOTM_LEN\n");
324         else
325                 printf("%s: uncompress error %d\n", name, ret);
326
327         /*
328          * The decompression routines are now safe, so will not write beyond
329          * their bounds. Probably it is not necessary to reset, but maintain
330          * the current behaviour for now.
331          */
332         printf("Must RESET board to recover\n");
333 #ifndef USE_HOSTCC
334         bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
335 #endif
336
337         return BOOTM_ERR_RESET;
338 }
339
340 int bootm_decomp_image(int comp, ulong load, ulong image_start, int type,
341                        void *load_buf, void *image_buf, ulong image_len,
342                        uint unc_len, ulong *load_end)
343 {
344         int ret = 0;
345
346         *load_end = load;
347         print_decomp_msg(comp, type, load == image_start);
348
349         /*
350          * Load the image to the right place, decompressing if needed. After
351          * this, image_len will be set to the number of uncompressed bytes
352          * loaded, ret will be non-zero on error.
353          */
354         switch (comp) {
355         case IH_COMP_NONE:
356                 if (load == image_start)
357                         break;
358                 if (image_len <= unc_len)
359                         memmove_wd(load_buf, image_buf, image_len, CHUNKSZ);
360                 else
361                         ret = 1;
362                 break;
363 #ifdef CONFIG_GZIP
364         case IH_COMP_GZIP: {
365                 ret = gunzip(load_buf, unc_len, image_buf, &image_len);
366                 break;
367         }
368 #endif /* CONFIG_GZIP */
369 #ifdef CONFIG_BZIP2
370         case IH_COMP_BZIP2: {
371                 uint size = unc_len;
372
373                 /*
374                  * If we've got less than 4 MB of malloc() space,
375                  * use slower decompression algorithm which requires
376                  * at most 2300 KB of memory.
377                  */
378                 ret = BZ2_bzBuffToBuffDecompress(load_buf, &size,
379                         image_buf, image_len,
380                         CONFIG_SYS_MALLOC_LEN < (4096 * 1024), 0);
381                 image_len = size;
382                 break;
383         }
384 #endif /* CONFIG_BZIP2 */
385 #ifdef CONFIG_LZMA
386         case IH_COMP_LZMA: {
387                 SizeT lzma_len = unc_len;
388
389                 ret = lzmaBuffToBuffDecompress(load_buf, &lzma_len,
390                                                image_buf, image_len);
391                 image_len = lzma_len;
392                 break;
393         }
394 #endif /* CONFIG_LZMA */
395 #ifdef CONFIG_LZO
396         case IH_COMP_LZO: {
397                 size_t size = unc_len;
398
399                 ret = lzop_decompress(image_buf, image_len, load_buf, &size);
400                 image_len = size;
401                 break;
402         }
403 #endif /* CONFIG_LZO */
404 #ifdef CONFIG_LZ4
405         case IH_COMP_LZ4: {
406                 size_t size = unc_len;
407
408                 ret = ulz4fn(image_buf, image_len, load_buf, &size);
409                 image_len = size;
410                 break;
411         }
412 #endif /* CONFIG_LZ4 */
413         default:
414                 printf("Unimplemented compression type %d\n", comp);
415                 return BOOTM_ERR_UNIMPLEMENTED;
416         }
417
418         if (ret)
419                 return handle_decomp_error(comp, image_len, unc_len, ret);
420         *load_end = load + image_len;
421
422         puts("OK\n");
423
424         return 0;
425 }
426
427 #ifndef USE_HOSTCC
428 static int bootm_load_os(bootm_headers_t *images, unsigned long *load_end,
429                          int boot_progress)
430 {
431         image_info_t os = images->os;
432         ulong load = os.load;
433         ulong blob_start = os.start;
434         ulong blob_end = os.end;
435         ulong image_start = os.image_start;
436         ulong image_len = os.image_len;
437         ulong flush_start = ALIGN_DOWN(load, ARCH_DMA_MINALIGN);
438         ulong flush_len = *load_end - load;
439         bool no_overlap;
440         void *load_buf, *image_buf;
441         int err;
442
443         load_buf = map_sysmem(load, 0);
444         image_buf = map_sysmem(os.image_start, image_len);
445         err = bootm_decomp_image(os.comp, load, os.image_start, os.type,
446                                  load_buf, image_buf, image_len,
447                                  CONFIG_SYS_BOOTM_LEN, load_end);
448         if (err) {
449                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
450                 return err;
451         }
452
453         if (flush_start < load)
454                 flush_len += load - flush_start;
455
456         flush_cache(flush_start, ALIGN(flush_len, ARCH_DMA_MINALIGN));
457
458         debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, *load_end);
459         bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
460
461         no_overlap = (os.comp == IH_COMP_NONE && load == image_start);
462
463         if (!no_overlap && (load < blob_end) && (*load_end > blob_start)) {
464                 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
465                       blob_start, blob_end);
466                 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
467                       *load_end);
468
469                 /* Check what type of image this is. */
470                 if (images->legacy_hdr_valid) {
471                         if (image_get_type(&images->legacy_hdr_os_copy)
472                                         == IH_TYPE_MULTI)
473                                 puts("WARNING: legacy format multi component image overwritten\n");
474                         return BOOTM_ERR_OVERLAP;
475                 } else {
476                         puts("ERROR: new format image overwritten - must RESET the board to recover\n");
477                         bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
478                         return BOOTM_ERR_RESET;
479                 }
480         }
481
482         return 0;
483 }
484
485 /**
486  * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot
487  *
488  * @return interrupt flag (0 if interrupts were disabled, non-zero if they were
489  *      enabled)
490  */
491 ulong bootm_disable_interrupts(void)
492 {
493         ulong iflag;
494
495         /*
496          * We have reached the point of no return: we are going to
497          * overwrite all exception vector code, so we cannot easily
498          * recover from any failures any more...
499          */
500         iflag = disable_interrupts();
501 #ifdef CONFIG_NETCONSOLE
502         /* Stop the ethernet stack if NetConsole could have left it up */
503         eth_halt();
504 # ifndef CONFIG_DM_ETH
505         eth_unregister(eth_get_dev());
506 # endif
507 #endif
508
509 #if defined(CONFIG_CMD_USB)
510         /*
511          * turn off USB to prevent the host controller from writing to the
512          * SDRAM while Linux is booting. This could happen (at least for OHCI
513          * controller), because the HCCA (Host Controller Communication Area)
514          * lies within the SDRAM and the host controller writes continously to
515          * this area (as busmaster!). The HccaFrameNumber is for example
516          * updated every 1 ms within the HCCA structure in SDRAM! For more
517          * details see the OpenHCI specification.
518          */
519         usb_stop();
520 #endif
521         return iflag;
522 }
523
524 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
525
526 #define CONSOLE_ARG     "console="
527 #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1)
528
529 static void fixup_silent_linux(void)
530 {
531         char *buf;
532         const char *env_val;
533         char *cmdline = env_get("bootargs");
534         int want_silent;
535
536         /*
537          * Only fix cmdline when requested. The environment variable can be:
538          *
539          *      no - we never fixup
540          *      yes - we always fixup
541          *      unset - we rely on the console silent flag
542          */
543         want_silent = env_get_yesno("silent_linux");
544         if (want_silent == 0)
545                 return;
546         else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT))
547                 return;
548
549         debug("before silent fix-up: %s\n", cmdline);
550         if (cmdline && (cmdline[0] != '\0')) {
551                 char *start = strstr(cmdline, CONSOLE_ARG);
552
553                 /* Allocate space for maximum possible new command line */
554                 buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1);
555                 if (!buf) {
556                         debug("%s: out of memory\n", __func__);
557                         return;
558                 }
559
560                 if (start) {
561                         char *end = strchr(start, ' ');
562                         int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN;
563
564                         strncpy(buf, cmdline, num_start_bytes);
565                         if (end)
566                                 strcpy(buf + num_start_bytes, end);
567                         else
568                                 buf[num_start_bytes] = '\0';
569                 } else {
570                         sprintf(buf, "%s %s", cmdline, CONSOLE_ARG);
571                 }
572                 env_val = buf;
573         } else {
574                 buf = NULL;
575                 env_val = CONSOLE_ARG;
576         }
577
578         env_set("bootargs", env_val);
579         debug("after silent fix-up: %s\n", env_val);
580         free(buf);
581 }
582 #endif /* CONFIG_SILENT_CONSOLE */
583
584 /**
585  * Execute selected states of the bootm command.
586  *
587  * Note the arguments to this state must be the first argument, Any 'bootm'
588  * or sub-command arguments must have already been taken.
589  *
590  * Note that if states contains more than one flag it MUST contain
591  * BOOTM_STATE_START, since this handles and consumes the command line args.
592  *
593  * Also note that aside from boot_os_fn functions and bootm_load_os no other
594  * functions we store the return value of in 'ret' may use a negative return
595  * value, without special handling.
596  *
597  * @param cmdtp         Pointer to bootm command table entry
598  * @param flag          Command flags (CMD_FLAG_...)
599  * @param argc          Number of subcommand arguments (0 = no arguments)
600  * @param argv          Arguments
601  * @param states        Mask containing states to run (BOOTM_STATE_...)
602  * @param images        Image header information
603  * @param boot_progress 1 to show boot progress, 0 to not do this
604  * @return 0 if ok, something else on error. Some errors will cause this
605  *      function to perform a reboot! If states contains BOOTM_STATE_OS_GO
606  *      then the intent is to boot an OS, so this function will not return
607  *      unless the image type is standalone.
608  */
609 int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
610                     int states, bootm_headers_t *images, int boot_progress)
611 {
612         boot_os_fn *boot_fn;
613         ulong iflag = 0;
614         int ret = 0, need_boot_fn;
615
616         images->state |= states;
617
618         /*
619          * Work through the states and see how far we get. We stop on
620          * any error.
621          */
622         if (states & BOOTM_STATE_START)
623                 ret = bootm_start(cmdtp, flag, argc, argv);
624
625         if (!ret && (states & BOOTM_STATE_FINDOS))
626                 ret = bootm_find_os(cmdtp, flag, argc, argv);
627
628         if (!ret && (states & BOOTM_STATE_FINDOTHER))
629                 ret = bootm_find_other(cmdtp, flag, argc, argv);
630
631         /* Load the OS */
632         if (!ret && (states & BOOTM_STATE_LOADOS)) {
633                 ulong load_end;
634
635                 iflag = bootm_disable_interrupts();
636                 ret = bootm_load_os(images, &load_end, 0);
637                 if (ret == 0)
638                         lmb_reserve(&images->lmb, images->os.load,
639                                     (load_end - images->os.load));
640                 else if (ret && ret != BOOTM_ERR_OVERLAP)
641                         goto err;
642                 else if (ret == BOOTM_ERR_OVERLAP)
643                         ret = 0;
644         }
645
646         /* Relocate the ramdisk */
647 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
648         if (!ret && (states & BOOTM_STATE_RAMDISK)) {
649                 ulong rd_len = images->rd_end - images->rd_start;
650
651                 ret = boot_ramdisk_high(&images->lmb, images->rd_start,
652                         rd_len, &images->initrd_start, &images->initrd_end);
653                 if (!ret) {
654                         env_set_hex("initrd_start", images->initrd_start);
655                         env_set_hex("initrd_end", images->initrd_end);
656                 }
657         }
658 #endif
659 #if IMAGE_ENABLE_OF_LIBFDT && defined(CONFIG_LMB)
660         if (!ret && (states & BOOTM_STATE_FDT)) {
661                 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
662                 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
663                                         &images->ft_len);
664         }
665 #endif
666
667         /* From now on, we need the OS boot function */
668         if (ret)
669                 return ret;
670         boot_fn = bootm_os_get_boot_func(images->os.os);
671         need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE |
672                         BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP |
673                         BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO);
674         if (boot_fn == NULL && need_boot_fn) {
675                 if (iflag)
676                         enable_interrupts();
677                 printf("ERROR: booting os '%s' (%d) is not supported\n",
678                        genimg_get_os_name(images->os.os), images->os.os);
679                 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
680                 return 1;
681         }
682
683
684         /* Call various other states that are not generally used */
685         if (!ret && (states & BOOTM_STATE_OS_CMDLINE))
686                 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images);
687         if (!ret && (states & BOOTM_STATE_OS_BD_T))
688                 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
689         if (!ret && (states & BOOTM_STATE_OS_PREP)) {
690 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
691                 if (images->os.os == IH_OS_LINUX)
692                         fixup_silent_linux();
693 #endif
694                 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images);
695         }
696
697 #ifdef CONFIG_TRACE
698         /* Pretend to run the OS, then run a user command */
699         if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) {
700                 char *cmd_list = env_get("fakegocmd");
701
702                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO,
703                                 images, boot_fn);
704                 if (!ret && cmd_list)
705                         ret = run_command_list(cmd_list, -1, flag);
706         }
707 #endif
708
709         /* Check for unsupported subcommand. */
710         if (ret) {
711                 puts("subcommand not supported\n");
712                 return ret;
713         }
714
715         /* Now run the OS! We hope this doesn't return */
716         if (!ret && (states & BOOTM_STATE_OS_GO))
717                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO,
718                                 images, boot_fn);
719
720         /* Deal with any fallout */
721 err:
722         if (iflag)
723                 enable_interrupts();
724
725         if (ret == BOOTM_ERR_UNIMPLEMENTED)
726                 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
727         else if (ret == BOOTM_ERR_RESET)
728                 do_reset(cmdtp, flag, argc, argv);
729
730         return ret;
731 }
732
733 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
734 /**
735  * image_get_kernel - verify legacy format kernel image
736  * @img_addr: in RAM address of the legacy format image to be verified
737  * @verify: data CRC verification flag
738  *
739  * image_get_kernel() verifies legacy image integrity and returns pointer to
740  * legacy image header if image verification was completed successfully.
741  *
742  * returns:
743  *     pointer to a legacy image header if valid image was found
744  *     otherwise return NULL
745  */
746 static image_header_t *image_get_kernel(ulong img_addr, int verify)
747 {
748         image_header_t *hdr = (image_header_t *)img_addr;
749
750         if (!image_check_magic(hdr)) {
751                 puts("Bad Magic Number\n");
752                 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
753                 return NULL;
754         }
755         bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
756
757         if (!image_check_hcrc(hdr)) {
758                 puts("Bad Header Checksum\n");
759                 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
760                 return NULL;
761         }
762
763         bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
764         image_print_contents(hdr);
765
766         if (verify) {
767                 puts("   Verifying Checksum ... ");
768                 if (!image_check_dcrc(hdr)) {
769                         printf("Bad Data CRC\n");
770                         bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
771                         return NULL;
772                 }
773                 puts("OK\n");
774         }
775         bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
776
777         if (!image_check_target_arch(hdr)) {
778                 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
779                 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
780                 return NULL;
781         }
782         return hdr;
783 }
784 #endif
785
786 /**
787  * boot_get_kernel - find kernel image
788  * @os_data: pointer to a ulong variable, will hold os data start address
789  * @os_len: pointer to a ulong variable, will hold os data length
790  *
791  * boot_get_kernel() tries to find a kernel image, verifies its integrity
792  * and locates kernel data.
793  *
794  * returns:
795  *     pointer to image header if valid image was found, plus kernel start
796  *     address and length, otherwise NULL
797  */
798 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
799                                    char * const argv[], bootm_headers_t *images,
800                                    ulong *os_data, ulong *os_len)
801 {
802 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
803         image_header_t  *hdr;
804 #endif
805         ulong           img_addr;
806         const void *buf;
807         const char      *fit_uname_config = NULL;
808         const char      *fit_uname_kernel = NULL;
809 #if IMAGE_ENABLE_FIT
810         int             os_noffset;
811 #endif
812
813         img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0],
814                                               &fit_uname_config,
815                                               &fit_uname_kernel);
816
817         bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
818
819         /* check image type, for FIT images get FIT kernel node */
820         *os_data = *os_len = 0;
821         buf = map_sysmem(img_addr, 0);
822         switch (genimg_get_format(buf)) {
823 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
824         case IMAGE_FORMAT_LEGACY:
825                 printf("## Booting kernel from Legacy Image at %08lx ...\n",
826                        img_addr);
827                 hdr = image_get_kernel(img_addr, images->verify);
828                 if (!hdr)
829                         return NULL;
830                 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
831
832                 /* get os_data and os_len */
833                 switch (image_get_type(hdr)) {
834                 case IH_TYPE_KERNEL:
835                 case IH_TYPE_KERNEL_NOLOAD:
836                         *os_data = image_get_data(hdr);
837                         *os_len = image_get_data_size(hdr);
838                         break;
839                 case IH_TYPE_MULTI:
840                         image_multi_getimg(hdr, 0, os_data, os_len);
841                         break;
842                 case IH_TYPE_STANDALONE:
843                         *os_data = image_get_data(hdr);
844                         *os_len = image_get_data_size(hdr);
845                         break;
846                 default:
847                         printf("Wrong Image Type for %s command\n",
848                                cmdtp->name);
849                         bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
850                         return NULL;
851                 }
852
853                 /*
854                  * copy image header to allow for image overwrites during
855                  * kernel decompression.
856                  */
857                 memmove(&images->legacy_hdr_os_copy, hdr,
858                         sizeof(image_header_t));
859
860                 /* save pointer to image header */
861                 images->legacy_hdr_os = hdr;
862
863                 images->legacy_hdr_valid = 1;
864                 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
865                 break;
866 #endif
867 #if IMAGE_ENABLE_FIT
868         case IMAGE_FORMAT_FIT:
869                 os_noffset = fit_image_load(images, img_addr,
870                                 &fit_uname_kernel, &fit_uname_config,
871                                 IH_ARCH_DEFAULT, IH_TYPE_KERNEL,
872                                 BOOTSTAGE_ID_FIT_KERNEL_START,
873                                 FIT_LOAD_IGNORED, os_data, os_len);
874                 if (os_noffset < 0)
875                         return NULL;
876
877                 images->fit_hdr_os = map_sysmem(img_addr, 0);
878                 images->fit_uname_os = fit_uname_kernel;
879                 images->fit_uname_cfg = fit_uname_config;
880                 images->fit_noffset_os = os_noffset;
881                 break;
882 #endif
883 #ifdef CONFIG_ANDROID_BOOT_IMAGE
884         case IMAGE_FORMAT_ANDROID:
885                 printf("## Booting Android Image at 0x%08lx ...\n", img_addr);
886                 if (android_image_get_kernel(buf, images->verify,
887                                              os_data, os_len))
888                         return NULL;
889                 break;
890 #endif
891         default:
892                 printf("Wrong Image Format for %s command\n", cmdtp->name);
893                 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
894                 return NULL;
895         }
896
897         debug("   kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
898               *os_data, *os_len, *os_len);
899
900         return buf;
901 }
902 #else /* USE_HOSTCC */
903
904 void memmove_wd(void *to, void *from, size_t len, ulong chunksz)
905 {
906         memmove(to, from, len);
907 }
908
909 static int bootm_host_load_image(const void *fit, int req_image_type)
910 {
911         const char *fit_uname_config = NULL;
912         ulong data, len;
913         bootm_headers_t images;
914         int noffset;
915         ulong load_end;
916         uint8_t image_type;
917         uint8_t imape_comp;
918         void *load_buf;
919         int ret;
920
921         memset(&images, '\0', sizeof(images));
922         images.verify = 1;
923         noffset = fit_image_load(&images, (ulong)fit,
924                 NULL, &fit_uname_config,
925                 IH_ARCH_DEFAULT, req_image_type, -1,
926                 FIT_LOAD_IGNORED, &data, &len);
927         if (noffset < 0)
928                 return noffset;
929         if (fit_image_get_type(fit, noffset, &image_type)) {
930                 puts("Can't get image type!\n");
931                 return -EINVAL;
932         }
933
934         if (fit_image_get_comp(fit, noffset, &imape_comp)) {
935                 puts("Can't get image compression!\n");
936                 return -EINVAL;
937         }
938
939         /* Allow the image to expand by a factor of 4, should be safe */
940         load_buf = malloc((1 << 20) + len * 4);
941         ret = bootm_decomp_image(imape_comp, 0, data, image_type, load_buf,
942                                  (void *)data, len, CONFIG_SYS_BOOTM_LEN,
943                                  &load_end);
944         free(load_buf);
945
946         if (ret && ret != BOOTM_ERR_UNIMPLEMENTED)
947                 return ret;
948
949         return 0;
950 }
951
952 int bootm_host_load_images(const void *fit, int cfg_noffset)
953 {
954         static uint8_t image_types[] = {
955                 IH_TYPE_KERNEL,
956                 IH_TYPE_FLATDT,
957                 IH_TYPE_RAMDISK,
958         };
959         int err = 0;
960         int i;
961
962         for (i = 0; i < ARRAY_SIZE(image_types); i++) {
963                 int ret;
964
965                 ret = bootm_host_load_image(fit, image_types[i]);
966                 if (!err && ret && ret != -ENOENT)
967                         err = ret;
968         }
969
970         /* Return the first error we found */
971         return err;
972 }
973
974 #endif /* ndef USE_HOSTCC */