Merge branch 'master' of git://git.denx.de/u-boot-onenand
[kernel/u-boot.git] / common / cmd_bootm.c
1 /*
2  * (C) Copyright 2000-2009
3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4  *
5  * See file CREDITS for list of people who contributed to this
6  * project.
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License as
10  * published by the Free Software Foundation; either version 2 of
11  * the License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21  * MA 02111-1307 USA
22  */
23
24
25 /*
26  * Boot support
27  */
28 #include <common.h>
29 #include <watchdog.h>
30 #include <command.h>
31 #include <image.h>
32 #include <malloc.h>
33 #include <u-boot/zlib.h>
34 #include <bzlib.h>
35 #include <environment.h>
36 #include <lmb.h>
37 #include <linux/ctype.h>
38 #include <asm/byteorder.h>
39 #include <linux/compiler.h>
40
41 #if defined(CONFIG_CMD_USB)
42 #include <usb.h>
43 #endif
44
45 #ifdef CONFIG_SYS_HUSH_PARSER
46 #include <hush.h>
47 #endif
48
49 #if defined(CONFIG_OF_LIBFDT)
50 #include <fdt.h>
51 #include <libfdt.h>
52 #include <fdt_support.h>
53 #endif
54
55 #ifdef CONFIG_LZMA
56 #include <lzma/LzmaTypes.h>
57 #include <lzma/LzmaDec.h>
58 #include <lzma/LzmaTools.h>
59 #endif /* CONFIG_LZMA */
60
61 #ifdef CONFIG_LZO
62 #include <linux/lzo.h>
63 #endif /* CONFIG_LZO */
64
65 DECLARE_GLOBAL_DATA_PTR;
66
67 #ifndef CONFIG_SYS_BOOTM_LEN
68 #define CONFIG_SYS_BOOTM_LEN    0x800000        /* use 8MByte as default max gunzip size */
69 #endif
70
71 #ifdef CONFIG_BZIP2
72 extern void bz_internal_error(int);
73 #endif
74
75 #if defined(CONFIG_CMD_IMI)
76 static int image_info(unsigned long addr);
77 #endif
78
79 #if defined(CONFIG_CMD_IMLS)
80 #include <flash.h>
81 #include <mtd/cfi_flash.h>
82 extern flash_info_t flash_info[]; /* info for FLASH chips */
83 static int do_imls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
84 #endif
85
86 #ifdef CONFIG_SILENT_CONSOLE
87 static void fixup_silent_linux(void);
88 #endif
89
90 static image_header_t *image_get_kernel(ulong img_addr, int verify);
91 #if defined(CONFIG_FIT)
92 static int fit_check_kernel(const void *fit, int os_noffset, int verify);
93 #endif
94
95 static void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
96                                 char * const argv[], bootm_headers_t *images,
97                                 ulong *os_data, ulong *os_len);
98
99 /*
100  *  Continue booting an OS image; caller already has:
101  *  - copied image header to global variable `header'
102  *  - checked header magic number, checksums (both header & image),
103  *  - verified image architecture (PPC) and type (KERNEL or MULTI),
104  *  - loaded (first part of) image to header load address,
105  *  - disabled interrupts.
106  */
107 typedef int boot_os_fn(int flag, int argc, char * const argv[],
108                         bootm_headers_t *images); /* pointers to os/initrd/fdt */
109
110 #ifdef CONFIG_BOOTM_LINUX
111 extern boot_os_fn do_bootm_linux;
112 #endif
113 #ifdef CONFIG_BOOTM_NETBSD
114 static boot_os_fn do_bootm_netbsd;
115 #endif
116 #if defined(CONFIG_LYNXKDI)
117 static boot_os_fn do_bootm_lynxkdi;
118 extern void lynxkdi_boot(image_header_t *);
119 #endif
120 #ifdef CONFIG_BOOTM_RTEMS
121 static boot_os_fn do_bootm_rtems;
122 #endif
123 #if defined(CONFIG_BOOTM_OSE)
124 static boot_os_fn do_bootm_ose;
125 #endif
126 #if defined(CONFIG_CMD_ELF)
127 static boot_os_fn do_bootm_vxworks;
128 static boot_os_fn do_bootm_qnxelf;
129 int do_bootvx(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
130 int do_bootelf(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
131 #endif
132 #if defined(CONFIG_INTEGRITY)
133 static boot_os_fn do_bootm_integrity;
134 #endif
135
136 static boot_os_fn *boot_os[] = {
137 #ifdef CONFIG_BOOTM_LINUX
138         [IH_OS_LINUX] = do_bootm_linux,
139 #endif
140 #ifdef CONFIG_BOOTM_NETBSD
141         [IH_OS_NETBSD] = do_bootm_netbsd,
142 #endif
143 #ifdef CONFIG_LYNXKDI
144         [IH_OS_LYNXOS] = do_bootm_lynxkdi,
145 #endif
146 #ifdef CONFIG_BOOTM_RTEMS
147         [IH_OS_RTEMS] = do_bootm_rtems,
148 #endif
149 #if defined(CONFIG_BOOTM_OSE)
150         [IH_OS_OSE] = do_bootm_ose,
151 #endif
152 #if defined(CONFIG_CMD_ELF)
153         [IH_OS_VXWORKS] = do_bootm_vxworks,
154         [IH_OS_QNX] = do_bootm_qnxelf,
155 #endif
156 #ifdef CONFIG_INTEGRITY
157         [IH_OS_INTEGRITY] = do_bootm_integrity,
158 #endif
159 };
160
161 bootm_headers_t images;         /* pointers to os/initrd/fdt images */
162
163 /* Allow for arch specific config before we boot */
164 void __arch_preboot_os(void)
165 {
166         /* please define platform specific arch_preboot_os() */
167 }
168 void arch_preboot_os(void) __attribute__((weak, alias("__arch_preboot_os")));
169
170 #define IH_INITRD_ARCH IH_ARCH_DEFAULT
171
172 #ifdef CONFIG_LMB
173 static void boot_start_lmb(bootm_headers_t *images)
174 {
175         ulong           mem_start;
176         phys_size_t     mem_size;
177
178         lmb_init(&images->lmb);
179
180         mem_start = getenv_bootm_low();
181         mem_size = getenv_bootm_size();
182
183         lmb_add(&images->lmb, (phys_addr_t)mem_start, mem_size);
184
185         arch_lmb_reserve(&images->lmb);
186         board_lmb_reserve(&images->lmb);
187 }
188 #else
189 #define lmb_reserve(lmb, base, size)
190 static inline void boot_start_lmb(bootm_headers_t *images) { }
191 #endif
192
193 static int bootm_start(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
194 {
195         void            *os_hdr;
196         int             ret;
197
198         memset((void *)&images, 0, sizeof(images));
199         images.verify = getenv_yesno("verify");
200
201         boot_start_lmb(&images);
202
203         bootstage_mark_name(BOOTSTAGE_ID_BOOTM_START, "bootm_start");
204
205         /* get kernel image header, start address and length */
206         os_hdr = boot_get_kernel(cmdtp, flag, argc, argv,
207                         &images, &images.os.image_start, &images.os.image_len);
208         if (images.os.image_len == 0) {
209                 puts("ERROR: can't get kernel image!\n");
210                 return 1;
211         }
212
213         /* get image parameters */
214         switch (genimg_get_format(os_hdr)) {
215         case IMAGE_FORMAT_LEGACY:
216                 images.os.type = image_get_type(os_hdr);
217                 images.os.comp = image_get_comp(os_hdr);
218                 images.os.os = image_get_os(os_hdr);
219
220                 images.os.end = image_get_image_end(os_hdr);
221                 images.os.load = image_get_load(os_hdr);
222                 break;
223 #if defined(CONFIG_FIT)
224         case IMAGE_FORMAT_FIT:
225                 if (fit_image_get_type(images.fit_hdr_os,
226                                         images.fit_noffset_os, &images.os.type)) {
227                         puts("Can't get image type!\n");
228                         bootstage_error(BOOTSTAGE_ID_FIT_TYPE);
229                         return 1;
230                 }
231
232                 if (fit_image_get_comp(images.fit_hdr_os,
233                                         images.fit_noffset_os, &images.os.comp)) {
234                         puts("Can't get image compression!\n");
235                         bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION);
236                         return 1;
237                 }
238
239                 if (fit_image_get_os(images.fit_hdr_os,
240                                         images.fit_noffset_os, &images.os.os)) {
241                         puts("Can't get image OS!\n");
242                         bootstage_error(BOOTSTAGE_ID_FIT_OS);
243                         return 1;
244                 }
245
246                 images.os.end = fit_get_end(images.fit_hdr_os);
247
248                 if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os,
249                                         &images.os.load)) {
250                         puts("Can't get image load address!\n");
251                         bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR);
252                         return 1;
253                 }
254                 break;
255 #endif
256         default:
257                 puts("ERROR: unknown image format type!\n");
258                 return 1;
259         }
260
261         /* find kernel entry point */
262         if (images.legacy_hdr_valid) {
263                 images.ep = image_get_ep(&images.legacy_hdr_os_copy);
264 #if defined(CONFIG_FIT)
265         } else if (images.fit_uname_os) {
266                 ret = fit_image_get_entry(images.fit_hdr_os,
267                                 images.fit_noffset_os, &images.ep);
268                 if (ret) {
269                         puts("Can't get entry point property!\n");
270                         return 1;
271                 }
272 #endif
273         } else {
274                 puts("Could not find kernel entry point!\n");
275                 return 1;
276         }
277
278         if (images.os.type == IH_TYPE_KERNEL_NOLOAD) {
279                 images.os.load = images.os.image_start;
280                 images.ep += images.os.load;
281         }
282
283         if (((images.os.type == IH_TYPE_KERNEL) ||
284              (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
285              (images.os.type == IH_TYPE_MULTI)) &&
286             (images.os.os == IH_OS_LINUX)) {
287                 /* find ramdisk */
288                 ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
289                                 &images.rd_start, &images.rd_end);
290                 if (ret) {
291                         puts("Ramdisk image is corrupt or invalid\n");
292                         return 1;
293                 }
294
295 #if defined(CONFIG_OF_LIBFDT)
296                 /* find flattened device tree */
297                 ret = boot_get_fdt(flag, argc, argv, &images,
298                                    &images.ft_addr, &images.ft_len);
299                 if (ret) {
300                         puts("Could not find a valid device tree\n");
301                         return 1;
302                 }
303
304                 set_working_fdt_addr(images.ft_addr);
305 #endif
306         }
307
308         images.os.start = (ulong)os_hdr;
309         images.state = BOOTM_STATE_START;
310
311         return 0;
312 }
313
314 #define BOOTM_ERR_RESET         -1
315 #define BOOTM_ERR_OVERLAP       -2
316 #define BOOTM_ERR_UNIMPLEMENTED -3
317 static int bootm_load_os(image_info_t os, ulong *load_end, int boot_progress)
318 {
319         uint8_t comp = os.comp;
320         ulong load = os.load;
321         ulong blob_start = os.start;
322         ulong blob_end = os.end;
323         ulong image_start = os.image_start;
324         ulong image_len = os.image_len;
325         __maybe_unused uint unc_len = CONFIG_SYS_BOOTM_LEN;
326         int no_overlap = 0;
327 #if defined(CONFIG_LZMA) || defined(CONFIG_LZO)
328         int ret;
329 #endif /* defined(CONFIG_LZMA) || defined(CONFIG_LZO) */
330
331         const char *type_name = genimg_get_type_name(os.type);
332
333         switch (comp) {
334         case IH_COMP_NONE:
335                 if (load == blob_start || load == image_start) {
336                         printf("   XIP %s ... ", type_name);
337                         no_overlap = 1;
338                 } else {
339                         printf("   Loading %s ... ", type_name);
340                         memmove_wd((void *)load, (void *)image_start,
341                                         image_len, CHUNKSZ);
342                 }
343                 *load_end = load + image_len;
344                 puts("OK\n");
345                 break;
346 #ifdef CONFIG_GZIP
347         case IH_COMP_GZIP:
348                 printf("   Uncompressing %s ... ", type_name);
349                 if (gunzip((void *)load, unc_len,
350                                 (uchar *)image_start, &image_len) != 0) {
351                         puts("GUNZIP: uncompress, out-of-mem or overwrite "
352                                 "error - must RESET board to recover\n");
353                         if (boot_progress)
354                                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
355                         return BOOTM_ERR_RESET;
356                 }
357
358                 *load_end = load + image_len;
359                 break;
360 #endif /* CONFIG_GZIP */
361 #ifdef CONFIG_BZIP2
362         case IH_COMP_BZIP2:
363                 printf("   Uncompressing %s ... ", type_name);
364                 /*
365                  * If we've got less than 4 MB of malloc() space,
366                  * use slower decompression algorithm which requires
367                  * at most 2300 KB of memory.
368                  */
369                 int i = BZ2_bzBuffToBuffDecompress((char *)load,
370                                         &unc_len, (char *)image_start, image_len,
371                                         CONFIG_SYS_MALLOC_LEN < (4096 * 1024), 0);
372                 if (i != BZ_OK) {
373                         printf("BUNZIP2: uncompress or overwrite error %d "
374                                 "- must RESET board to recover\n", i);
375                         if (boot_progress)
376                                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
377                         return BOOTM_ERR_RESET;
378                 }
379
380                 *load_end = load + unc_len;
381                 break;
382 #endif /* CONFIG_BZIP2 */
383 #ifdef CONFIG_LZMA
384         case IH_COMP_LZMA: {
385                 SizeT lzma_len = unc_len;
386                 printf("   Uncompressing %s ... ", type_name);
387
388                 ret = lzmaBuffToBuffDecompress(
389                         (unsigned char *)load, &lzma_len,
390                         (unsigned char *)image_start, image_len);
391                 unc_len = lzma_len;
392                 if (ret != SZ_OK) {
393                         printf("LZMA: uncompress or overwrite error %d "
394                                 "- must RESET board to recover\n", ret);
395                         bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
396                         return BOOTM_ERR_RESET;
397                 }
398                 *load_end = load + unc_len;
399                 break;
400         }
401 #endif /* CONFIG_LZMA */
402 #ifdef CONFIG_LZO
403         case IH_COMP_LZO:
404                 printf("   Uncompressing %s ... ", type_name);
405
406                 ret = lzop_decompress((const unsigned char *)image_start,
407                                           image_len, (unsigned char *)load,
408                                           &unc_len);
409                 if (ret != LZO_E_OK) {
410                         printf("LZO: uncompress or overwrite error %d "
411                               "- must RESET board to recover\n", ret);
412                         if (boot_progress)
413                                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
414                         return BOOTM_ERR_RESET;
415                 }
416
417                 *load_end = load + unc_len;
418                 break;
419 #endif /* CONFIG_LZO */
420         default:
421                 printf("Unimplemented compression type %d\n", comp);
422                 return BOOTM_ERR_UNIMPLEMENTED;
423         }
424
425         flush_cache(load, (*load_end - load) * sizeof(ulong));
426
427         puts("OK\n");
428         debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, *load_end);
429         bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
430
431         if (!no_overlap && (load < blob_end) && (*load_end > blob_start)) {
432                 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
433                         blob_start, blob_end);
434                 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
435                         *load_end);
436
437                 return BOOTM_ERR_OVERLAP;
438         }
439
440         return 0;
441 }
442
443 static int bootm_start_standalone(ulong iflag, int argc, char * const argv[])
444 {
445         char  *s;
446         int   (*appl)(int, char * const []);
447
448         /* Don't start if "autostart" is set to "no" */
449         if (((s = getenv("autostart")) != NULL) && (strcmp(s, "no") == 0)) {
450                 char buf[32];
451                 sprintf(buf, "%lX", images.os.image_len);
452                 setenv("filesize", buf);
453                 return 0;
454         }
455         appl = (int (*)(int, char * const []))(ulong)ntohl(images.ep);
456         (*appl)(argc-1, &argv[1]);
457         return 0;
458 }
459
460 /* we overload the cmd field with our state machine info instead of a
461  * function pointer */
462 static cmd_tbl_t cmd_bootm_sub[] = {
463         U_BOOT_CMD_MKENT(start, 0, 1, (void *)BOOTM_STATE_START, "", ""),
464         U_BOOT_CMD_MKENT(loados, 0, 1, (void *)BOOTM_STATE_LOADOS, "", ""),
465 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
466         U_BOOT_CMD_MKENT(ramdisk, 0, 1, (void *)BOOTM_STATE_RAMDISK, "", ""),
467 #endif
468 #ifdef CONFIG_OF_LIBFDT
469         U_BOOT_CMD_MKENT(fdt, 0, 1, (void *)BOOTM_STATE_FDT, "", ""),
470 #endif
471         U_BOOT_CMD_MKENT(cmdline, 0, 1, (void *)BOOTM_STATE_OS_CMDLINE, "", ""),
472         U_BOOT_CMD_MKENT(bdt, 0, 1, (void *)BOOTM_STATE_OS_BD_T, "", ""),
473         U_BOOT_CMD_MKENT(prep, 0, 1, (void *)BOOTM_STATE_OS_PREP, "", ""),
474         U_BOOT_CMD_MKENT(go, 0, 1, (void *)BOOTM_STATE_OS_GO, "", ""),
475 };
476
477 int do_bootm_subcommand(cmd_tbl_t *cmdtp, int flag, int argc,
478                         char * const argv[])
479 {
480         int ret = 0;
481         long state;
482         cmd_tbl_t *c;
483         boot_os_fn *boot_fn;
484
485         c = find_cmd_tbl(argv[1], &cmd_bootm_sub[0], ARRAY_SIZE(cmd_bootm_sub));
486
487         if (c) {
488                 state = (long)c->cmd;
489
490                 /* treat start special since it resets the state machine */
491                 if (state == BOOTM_STATE_START) {
492                         argc--;
493                         argv++;
494                         return bootm_start(cmdtp, flag, argc, argv);
495                 }
496         } else {
497                 /* Unrecognized command */
498                 return CMD_RET_USAGE;
499         }
500
501         if (images.state >= state) {
502                 printf("Trying to execute a command out of order\n");
503                 return CMD_RET_USAGE;
504         }
505
506         images.state |= state;
507         boot_fn = boot_os[images.os.os];
508
509         switch (state) {
510                 ulong load_end;
511                 case BOOTM_STATE_START:
512                         /* should never occur */
513                         break;
514                 case BOOTM_STATE_LOADOS:
515                         ret = bootm_load_os(images.os, &load_end, 0);
516                         if (ret)
517                                 return ret;
518
519                         lmb_reserve(&images.lmb, images.os.load,
520                                         (load_end - images.os.load));
521                         break;
522 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
523                 case BOOTM_STATE_RAMDISK:
524                 {
525                         ulong rd_len = images.rd_end - images.rd_start;
526                         char str[17];
527
528                         ret = boot_ramdisk_high(&images.lmb, images.rd_start,
529                                 rd_len, &images.initrd_start, &images.initrd_end);
530                         if (ret)
531                                 return ret;
532
533                         sprintf(str, "%lx", images.initrd_start);
534                         setenv("initrd_start", str);
535                         sprintf(str, "%lx", images.initrd_end);
536                         setenv("initrd_end", str);
537                 }
538                         break;
539 #endif
540 #if defined(CONFIG_OF_LIBFDT)
541                 case BOOTM_STATE_FDT:
542                 {
543                         boot_fdt_add_mem_rsv_regions(&images.lmb,
544                                                      images.ft_addr);
545                         ret = boot_relocate_fdt(&images.lmb,
546                                 &images.ft_addr, &images.ft_len);
547                         break;
548                 }
549 #endif
550                 case BOOTM_STATE_OS_CMDLINE:
551                         ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, &images);
552                         if (ret)
553                                 printf("cmdline subcommand not supported\n");
554                         break;
555                 case BOOTM_STATE_OS_BD_T:
556                         ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, &images);
557                         if (ret)
558                                 printf("bdt subcommand not supported\n");
559                         break;
560                 case BOOTM_STATE_OS_PREP:
561                         ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, &images);
562                         if (ret)
563                                 printf("prep subcommand not supported\n");
564                         break;
565                 case BOOTM_STATE_OS_GO:
566                         disable_interrupts();
567                         arch_preboot_os();
568                         boot_fn(BOOTM_STATE_OS_GO, argc, argv, &images);
569                         break;
570         }
571
572         return ret;
573 }
574
575 /*******************************************************************/
576 /* bootm - boot application image from image in memory */
577 /*******************************************************************/
578
579 int do_bootm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
580 {
581         ulong           iflag;
582         ulong           load_end = 0;
583         int             ret;
584         boot_os_fn      *boot_fn;
585 #ifdef CONFIG_NEEDS_MANUAL_RELOC
586         static int relocated = 0;
587
588         /* relocate boot function table */
589         if (!relocated) {
590                 int i;
591                 for (i = 0; i < ARRAY_SIZE(boot_os); i++)
592                         if (boot_os[i] != NULL)
593                                 boot_os[i] += gd->reloc_off;
594                 relocated = 1;
595         }
596 #endif
597
598         /* determine if we have a sub command */
599         if (argc > 1) {
600                 char *endp;
601
602                 simple_strtoul(argv[1], &endp, 16);
603                 /* endp pointing to NULL means that argv[1] was just a
604                  * valid number, pass it along to the normal bootm processing
605                  *
606                  * If endp is ':' or '#' assume a FIT identifier so pass
607                  * along for normal processing.
608                  *
609                  * Right now we assume the first arg should never be '-'
610                  */
611                 if ((*endp != 0) && (*endp != ':') && (*endp != '#'))
612                         return do_bootm_subcommand(cmdtp, flag, argc, argv);
613         }
614
615         if (bootm_start(cmdtp, flag, argc, argv))
616                 return 1;
617
618         /*
619          * We have reached the point of no return: we are going to
620          * overwrite all exception vector code, so we cannot easily
621          * recover from any failures any more...
622          */
623         iflag = disable_interrupts();
624
625 #if defined(CONFIG_CMD_USB)
626         /*
627          * turn off USB to prevent the host controller from writing to the
628          * SDRAM while Linux is booting. This could happen (at least for OHCI
629          * controller), because the HCCA (Host Controller Communication Area)
630          * lies within the SDRAM and the host controller writes continously to
631          * this area (as busmaster!). The HccaFrameNumber is for example
632          * updated every 1 ms within the HCCA structure in SDRAM! For more
633          * details see the OpenHCI specification.
634          */
635         usb_stop();
636 #endif
637
638         ret = bootm_load_os(images.os, &load_end, 1);
639
640         if (ret < 0) {
641                 if (ret == BOOTM_ERR_RESET)
642                         do_reset(cmdtp, flag, argc, argv);
643                 if (ret == BOOTM_ERR_OVERLAP) {
644                         if (images.legacy_hdr_valid) {
645                                 image_header_t *hdr;
646                                 hdr = &images.legacy_hdr_os_copy;
647                                 if (image_get_type(hdr) == IH_TYPE_MULTI)
648                                         puts("WARNING: legacy format multi "
649                                                 "component image "
650                                                 "overwritten\n");
651                         } else {
652                                 puts("ERROR: new format image overwritten - "
653                                         "must RESET the board to recover\n");
654                                 bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
655                                 do_reset(cmdtp, flag, argc, argv);
656                         }
657                 }
658                 if (ret == BOOTM_ERR_UNIMPLEMENTED) {
659                         if (iflag)
660                                 enable_interrupts();
661                         bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
662                         return 1;
663                 }
664         }
665
666         lmb_reserve(&images.lmb, images.os.load, (load_end - images.os.load));
667
668         if (images.os.type == IH_TYPE_STANDALONE) {
669                 if (iflag)
670                         enable_interrupts();
671                 /* This may return when 'autostart' is 'no' */
672                 bootm_start_standalone(iflag, argc, argv);
673                 return 0;
674         }
675
676         bootstage_mark(BOOTSTAGE_ID_CHECK_BOOT_OS);
677
678 #ifdef CONFIG_SILENT_CONSOLE
679         if (images.os.os == IH_OS_LINUX)
680                 fixup_silent_linux();
681 #endif
682
683         boot_fn = boot_os[images.os.os];
684
685         if (boot_fn == NULL) {
686                 if (iflag)
687                         enable_interrupts();
688                 printf("ERROR: booting os '%s' (%d) is not supported\n",
689                         genimg_get_os_name(images.os.os), images.os.os);
690                 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
691                 return 1;
692         }
693
694         arch_preboot_os();
695
696         boot_fn(0, argc, argv, &images);
697
698         bootstage_error(BOOTSTAGE_ID_BOOT_OS_RETURNED);
699 #ifdef DEBUG
700         puts("\n## Control returned to monitor - resetting...\n");
701 #endif
702         do_reset(cmdtp, flag, argc, argv);
703
704         return 1;
705 }
706
707 int bootm_maybe_autostart(cmd_tbl_t *cmdtp, const char *cmd)
708 {
709         const char *ep = getenv("autostart");
710
711         if (ep && !strcmp(ep, "yes")) {
712                 char *local_args[2];
713                 local_args[0] = (char *)cmd;
714                 local_args[1] = NULL;
715                 printf("Automatic boot of image at addr 0x%08lX ...\n", load_addr);
716                 return do_bootm(cmdtp, 0, 1, local_args);
717         }
718
719         return 0;
720 }
721
722 /**
723  * image_get_kernel - verify legacy format kernel image
724  * @img_addr: in RAM address of the legacy format image to be verified
725  * @verify: data CRC verification flag
726  *
727  * image_get_kernel() verifies legacy image integrity and returns pointer to
728  * legacy image header if image verification was completed successfully.
729  *
730  * returns:
731  *     pointer to a legacy image header if valid image was found
732  *     otherwise return NULL
733  */
734 static image_header_t *image_get_kernel(ulong img_addr, int verify)
735 {
736         image_header_t *hdr = (image_header_t *)img_addr;
737
738         if (!image_check_magic(hdr)) {
739                 puts("Bad Magic Number\n");
740                 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
741                 return NULL;
742         }
743         bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
744
745         if (!image_check_hcrc(hdr)) {
746                 puts("Bad Header Checksum\n");
747                 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
748                 return NULL;
749         }
750
751         bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
752         image_print_contents(hdr);
753
754         if (verify) {
755                 puts("   Verifying Checksum ... ");
756                 if (!image_check_dcrc(hdr)) {
757                         printf("Bad Data CRC\n");
758                         bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
759                         return NULL;
760                 }
761                 puts("OK\n");
762         }
763         bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
764
765         if (!image_check_target_arch(hdr)) {
766                 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
767                 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
768                 return NULL;
769         }
770         return hdr;
771 }
772
773 /**
774  * fit_check_kernel - verify FIT format kernel subimage
775  * @fit_hdr: pointer to the FIT image header
776  * os_noffset: kernel subimage node offset within FIT image
777  * @verify: data CRC verification flag
778  *
779  * fit_check_kernel() verifies integrity of the kernel subimage and from
780  * specified FIT image.
781  *
782  * returns:
783  *     1, on success
784  *     0, on failure
785  */
786 #if defined(CONFIG_FIT)
787 static int fit_check_kernel(const void *fit, int os_noffset, int verify)
788 {
789         fit_image_print(fit, os_noffset, "   ");
790
791         if (verify) {
792                 puts("   Verifying Hash Integrity ... ");
793                 if (!fit_image_check_hashes(fit, os_noffset)) {
794                         puts("Bad Data Hash\n");
795                         bootstage_error(BOOTSTAGE_ID_FIT_CHECK_HASH);
796                         return 0;
797                 }
798                 puts("OK\n");
799         }
800         bootstage_mark(BOOTSTAGE_ID_FIT_CHECK_ARCH);
801
802         if (!fit_image_check_target_arch(fit, os_noffset)) {
803                 puts("Unsupported Architecture\n");
804                 bootstage_error(BOOTSTAGE_ID_FIT_CHECK_ARCH);
805                 return 0;
806         }
807
808         bootstage_mark(BOOTSTAGE_ID_FIT_CHECK_KERNEL);
809         if (!fit_image_check_type(fit, os_noffset, IH_TYPE_KERNEL) &&
810             !fit_image_check_type(fit, os_noffset, IH_TYPE_KERNEL_NOLOAD)) {
811                 puts("Not a kernel image\n");
812                 bootstage_error(BOOTSTAGE_ID_FIT_CHECK_KERNEL);
813                 return 0;
814         }
815
816         bootstage_mark(BOOTSTAGE_ID_FIT_CHECKED);
817         return 1;
818 }
819 #endif /* CONFIG_FIT */
820
821 /**
822  * boot_get_kernel - find kernel image
823  * @os_data: pointer to a ulong variable, will hold os data start address
824  * @os_len: pointer to a ulong variable, will hold os data length
825  *
826  * boot_get_kernel() tries to find a kernel image, verifies its integrity
827  * and locates kernel data.
828  *
829  * returns:
830  *     pointer to image header if valid image was found, plus kernel start
831  *     address and length, otherwise NULL
832  */
833 static void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
834                 char * const argv[], bootm_headers_t *images, ulong *os_data,
835                 ulong *os_len)
836 {
837         image_header_t  *hdr;
838         ulong           img_addr;
839 #if defined(CONFIG_FIT)
840         void            *fit_hdr;
841         const char      *fit_uname_config = NULL;
842         const char      *fit_uname_kernel = NULL;
843         const void      *data;
844         size_t          len;
845         int             cfg_noffset;
846         int             os_noffset;
847 #endif
848
849         /* find out kernel image address */
850         if (argc < 2) {
851                 img_addr = load_addr;
852                 debug("*  kernel: default image load address = 0x%08lx\n",
853                                 load_addr);
854 #if defined(CONFIG_FIT)
855         } else if (fit_parse_conf(argv[1], load_addr, &img_addr,
856                                                         &fit_uname_config)) {
857                 debug("*  kernel: config '%s' from image at 0x%08lx\n",
858                                 fit_uname_config, img_addr);
859         } else if (fit_parse_subimage(argv[1], load_addr, &img_addr,
860                                                         &fit_uname_kernel)) {
861                 debug("*  kernel: subimage '%s' from image at 0x%08lx\n",
862                                 fit_uname_kernel, img_addr);
863 #endif
864         } else {
865                 img_addr = simple_strtoul(argv[1], NULL, 16);
866                 debug("*  kernel: cmdline image address = 0x%08lx\n", img_addr);
867         }
868
869         bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
870
871         /* copy from dataflash if needed */
872         img_addr = genimg_get_image(img_addr);
873
874         /* check image type, for FIT images get FIT kernel node */
875         *os_data = *os_len = 0;
876         switch (genimg_get_format((void *)img_addr)) {
877         case IMAGE_FORMAT_LEGACY:
878                 printf("## Booting kernel from Legacy Image at %08lx ...\n",
879                                 img_addr);
880                 hdr = image_get_kernel(img_addr, images->verify);
881                 if (!hdr)
882                         return NULL;
883                 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
884
885                 /* get os_data and os_len */
886                 switch (image_get_type(hdr)) {
887                 case IH_TYPE_KERNEL:
888                 case IH_TYPE_KERNEL_NOLOAD:
889                         *os_data = image_get_data(hdr);
890                         *os_len = image_get_data_size(hdr);
891                         break;
892                 case IH_TYPE_MULTI:
893                         image_multi_getimg(hdr, 0, os_data, os_len);
894                         break;
895                 case IH_TYPE_STANDALONE:
896                         *os_data = image_get_data(hdr);
897                         *os_len = image_get_data_size(hdr);
898                         break;
899                 default:
900                         printf("Wrong Image Type for %s command\n",
901                                 cmdtp->name);
902                         bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
903                         return NULL;
904                 }
905
906                 /*
907                  * copy image header to allow for image overwrites during
908                  * kernel decompression.
909                  */
910                 memmove(&images->legacy_hdr_os_copy, hdr,
911                         sizeof(image_header_t));
912
913                 /* save pointer to image header */
914                 images->legacy_hdr_os = hdr;
915
916                 images->legacy_hdr_valid = 1;
917                 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
918                 break;
919 #if defined(CONFIG_FIT)
920         case IMAGE_FORMAT_FIT:
921                 fit_hdr = (void *)img_addr;
922                 printf("## Booting kernel from FIT Image at %08lx ...\n",
923                                 img_addr);
924
925                 if (!fit_check_format(fit_hdr)) {
926                         puts("Bad FIT kernel image format!\n");
927                         bootstage_error(BOOTSTAGE_ID_FIT_FORMAT);
928                         return NULL;
929                 }
930                 bootstage_mark(BOOTSTAGE_ID_FIT_FORMAT);
931
932                 if (!fit_uname_kernel) {
933                         /*
934                          * no kernel image node unit name, try to get config
935                          * node first. If config unit node name is NULL
936                          * fit_conf_get_node() will try to find default config
937                          * node
938                          */
939                         bootstage_mark(BOOTSTAGE_ID_FIT_NO_UNIT_NAME);
940                         cfg_noffset = fit_conf_get_node(fit_hdr,
941                                                         fit_uname_config);
942                         if (cfg_noffset < 0) {
943                                 bootstage_error(BOOTSTAGE_ID_FIT_NO_UNIT_NAME);
944                                 return NULL;
945                         }
946                         /* save configuration uname provided in the first
947                          * bootm argument
948                          */
949                         images->fit_uname_cfg = fdt_get_name(fit_hdr,
950                                                                 cfg_noffset,
951                                                                 NULL);
952                         printf("   Using '%s' configuration\n",
953                                 images->fit_uname_cfg);
954                         bootstage_mark(BOOTSTAGE_ID_FIT_CONFIG);
955
956                         os_noffset = fit_conf_get_kernel_node(fit_hdr,
957                                                                 cfg_noffset);
958                         fit_uname_kernel = fit_get_name(fit_hdr, os_noffset,
959                                                         NULL);
960                 } else {
961                         /* get kernel component image node offset */
962                         bootstage_mark(BOOTSTAGE_ID_FIT_UNIT_NAME);
963                         os_noffset = fit_image_get_node(fit_hdr,
964                                                         fit_uname_kernel);
965                 }
966                 if (os_noffset < 0) {
967                         bootstage_error(BOOTSTAGE_ID_FIT_CONFIG);
968                         return NULL;
969                 }
970
971                 printf("   Trying '%s' kernel subimage\n", fit_uname_kernel);
972
973                 bootstage_mark(BOOTSTAGE_ID_FIT_CHECK_SUBIMAGE);
974                 if (!fit_check_kernel(fit_hdr, os_noffset, images->verify))
975                         return NULL;
976
977                 /* get kernel image data address and length */
978                 if (fit_image_get_data(fit_hdr, os_noffset, &data, &len)) {
979                         puts("Could not find kernel subimage data!\n");
980                         bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO_ERR);
981                         return NULL;
982                 }
983                 bootstage_mark(BOOTSTAGE_ID_FIT_KERNEL_INFO);
984
985                 *os_len = len;
986                 *os_data = (ulong)data;
987                 images->fit_hdr_os = fit_hdr;
988                 images->fit_uname_os = fit_uname_kernel;
989                 images->fit_noffset_os = os_noffset;
990                 break;
991 #endif
992         default:
993                 printf("Wrong Image Format for %s command\n", cmdtp->name);
994                 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
995                 return NULL;
996         }
997
998         debug("   kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
999                         *os_data, *os_len, *os_len);
1000
1001         return (void *)img_addr;
1002 }
1003
1004 U_BOOT_CMD(
1005         bootm,  CONFIG_SYS_MAXARGS,     1,      do_bootm,
1006         "boot application image from memory",
1007         "[addr [arg ...]]\n    - boot application image stored in memory\n"
1008         "\tpassing arguments 'arg ...'; when booting a Linux kernel,\n"
1009         "\t'arg' can be the address of an initrd image\n"
1010 #if defined(CONFIG_OF_LIBFDT)
1011         "\tWhen booting a Linux kernel which requires a flat device-tree\n"
1012         "\ta third argument is required which is the address of the\n"
1013         "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
1014         "\tuse a '-' for the second argument. If you do not pass a third\n"
1015         "\ta bd_info struct will be passed instead\n"
1016 #endif
1017 #if defined(CONFIG_FIT)
1018         "\t\nFor the new multi component uImage format (FIT) addresses\n"
1019         "\tmust be extened to include component or configuration unit name:\n"
1020         "\taddr:<subimg_uname> - direct component image specification\n"
1021         "\taddr#<conf_uname>   - configuration specification\n"
1022         "\tUse iminfo command to get the list of existing component\n"
1023         "\timages and configurations.\n"
1024 #endif
1025         "\nSub-commands to do part of the bootm sequence.  The sub-commands "
1026         "must be\n"
1027         "issued in the order below (it's ok to not issue all sub-commands):\n"
1028         "\tstart [addr [arg ...]]\n"
1029         "\tloados  - load OS image\n"
1030 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_SPARC)
1031         "\tramdisk - relocate initrd, set env initrd_start/initrd_end\n"
1032 #endif
1033 #if defined(CONFIG_OF_LIBFDT)
1034         "\tfdt     - relocate flat device tree\n"
1035 #endif
1036         "\tcmdline - OS specific command line processing/setup\n"
1037         "\tbdt     - OS specific bd_t processing\n"
1038         "\tprep    - OS specific prep before relocation or go\n"
1039         "\tgo      - start OS"
1040 );
1041
1042 /*******************************************************************/
1043 /* bootd - boot default image */
1044 /*******************************************************************/
1045 #if defined(CONFIG_CMD_BOOTD)
1046 int do_bootd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1047 {
1048         int rcode = 0;
1049
1050         if (run_command(getenv("bootcmd"), flag) < 0)
1051                 rcode = 1;
1052         return rcode;
1053 }
1054
1055 U_BOOT_CMD(
1056         boot,   1,      1,      do_bootd,
1057         "boot default, i.e., run 'bootcmd'",
1058         ""
1059 );
1060
1061 /* keep old command name "bootd" for backward compatibility */
1062 U_BOOT_CMD(
1063         bootd, 1,       1,      do_bootd,
1064         "boot default, i.e., run 'bootcmd'",
1065         ""
1066 );
1067
1068 #endif
1069
1070
1071 /*******************************************************************/
1072 /* iminfo - print header info for a requested image */
1073 /*******************************************************************/
1074 #if defined(CONFIG_CMD_IMI)
1075 int do_iminfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1076 {
1077         int     arg;
1078         ulong   addr;
1079         int     rcode = 0;
1080
1081         if (argc < 2) {
1082                 return image_info(load_addr);
1083         }
1084
1085         for (arg = 1; arg < argc; ++arg) {
1086                 addr = simple_strtoul(argv[arg], NULL, 16);
1087                 if (image_info(addr) != 0)
1088                         rcode = 1;
1089         }
1090         return rcode;
1091 }
1092
1093 static int image_info(ulong addr)
1094 {
1095         void *hdr = (void *)addr;
1096
1097         printf("\n## Checking Image at %08lx ...\n", addr);
1098
1099         switch (genimg_get_format(hdr)) {
1100         case IMAGE_FORMAT_LEGACY:
1101                 puts("   Legacy image found\n");
1102                 if (!image_check_magic(hdr)) {
1103                         puts("   Bad Magic Number\n");
1104                         return 1;
1105                 }
1106
1107                 if (!image_check_hcrc(hdr)) {
1108                         puts("   Bad Header Checksum\n");
1109                         return 1;
1110                 }
1111
1112                 image_print_contents(hdr);
1113
1114                 puts("   Verifying Checksum ... ");
1115                 if (!image_check_dcrc(hdr)) {
1116                         puts("   Bad Data CRC\n");
1117                         return 1;
1118                 }
1119                 puts("OK\n");
1120                 return 0;
1121 #if defined(CONFIG_FIT)
1122         case IMAGE_FORMAT_FIT:
1123                 puts("   FIT image found\n");
1124
1125                 if (!fit_check_format(hdr)) {
1126                         puts("Bad FIT image format!\n");
1127                         return 1;
1128                 }
1129
1130                 fit_print_contents(hdr);
1131
1132                 if (!fit_all_image_check_hashes(hdr)) {
1133                         puts("Bad hash in FIT image!\n");
1134                         return 1;
1135                 }
1136
1137                 return 0;
1138 #endif
1139         default:
1140                 puts("Unknown image format!\n");
1141                 break;
1142         }
1143
1144         return 1;
1145 }
1146
1147 U_BOOT_CMD(
1148         iminfo, CONFIG_SYS_MAXARGS,     1,      do_iminfo,
1149         "print header information for application image",
1150         "addr [addr ...]\n"
1151         "    - print header information for application image starting at\n"
1152         "      address 'addr' in memory; this includes verification of the\n"
1153         "      image contents (magic number, header and payload checksums)"
1154 );
1155 #endif
1156
1157
1158 /*******************************************************************/
1159 /* imls - list all images found in flash */
1160 /*******************************************************************/
1161 #if defined(CONFIG_CMD_IMLS)
1162 int do_imls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1163 {
1164         flash_info_t *info;
1165         int i, j;
1166         void *hdr;
1167
1168         for (i = 0, info = &flash_info[0];
1169                 i < CONFIG_SYS_MAX_FLASH_BANKS; ++i, ++info) {
1170
1171                 if (info->flash_id == FLASH_UNKNOWN)
1172                         goto next_bank;
1173                 for (j = 0; j < info->sector_count; ++j) {
1174
1175                         hdr = (void *)info->start[j];
1176                         if (!hdr)
1177                                 goto next_sector;
1178
1179                         switch (genimg_get_format(hdr)) {
1180                         case IMAGE_FORMAT_LEGACY:
1181                                 if (!image_check_hcrc(hdr))
1182                                         goto next_sector;
1183
1184                                 printf("Legacy Image at %08lX:\n", (ulong)hdr);
1185                                 image_print_contents(hdr);
1186
1187                                 puts("   Verifying Checksum ... ");
1188                                 if (!image_check_dcrc(hdr)) {
1189                                         puts("Bad Data CRC\n");
1190                                 } else {
1191                                         puts("OK\n");
1192                                 }
1193                                 break;
1194 #if defined(CONFIG_FIT)
1195                         case IMAGE_FORMAT_FIT:
1196                                 if (!fit_check_format(hdr))
1197                                         goto next_sector;
1198
1199                                 printf("FIT Image at %08lX:\n", (ulong)hdr);
1200                                 fit_print_contents(hdr);
1201                                 break;
1202 #endif
1203                         default:
1204                                 goto next_sector;
1205                         }
1206
1207 next_sector:            ;
1208                 }
1209 next_bank:      ;
1210         }
1211
1212         return (0);
1213 }
1214
1215 U_BOOT_CMD(
1216         imls,   1,              1,      do_imls,
1217         "list all images found in flash",
1218         "\n"
1219         "    - Prints information about all images found at sector\n"
1220         "      boundaries in flash."
1221 );
1222 #endif
1223
1224 /*******************************************************************/
1225 /* helper routines */
1226 /*******************************************************************/
1227 #ifdef CONFIG_SILENT_CONSOLE
1228 static void fixup_silent_linux(void)
1229 {
1230         char buf[256], *start, *end;
1231         char *cmdline = getenv("bootargs");
1232
1233         /* Only fix cmdline when requested */
1234         if (!(gd->flags & GD_FLG_SILENT))
1235                 return;
1236
1237         debug("before silent fix-up: %s\n", cmdline);
1238         if (cmdline) {
1239                 start = strstr(cmdline, "console=");
1240                 if (start) {
1241                         end = strchr(start, ' ');
1242                         strncpy(buf, cmdline, (start - cmdline + 8));
1243                         if (end)
1244                                 strcpy(buf + (start - cmdline + 8), end);
1245                         else
1246                                 buf[start - cmdline + 8] = '\0';
1247                 } else {
1248                         strcpy(buf, cmdline);
1249                         strcat(buf, " console=");
1250                 }
1251         } else {
1252                 strcpy(buf, "console=");
1253         }
1254
1255         setenv("bootargs", buf);
1256         debug("after silent fix-up: %s\n", buf);
1257 }
1258 #endif /* CONFIG_SILENT_CONSOLE */
1259
1260
1261 /*******************************************************************/
1262 /* OS booting routines */
1263 /*******************************************************************/
1264
1265 #ifdef CONFIG_BOOTM_NETBSD
1266 static int do_bootm_netbsd(int flag, int argc, char * const argv[],
1267                             bootm_headers_t *images)
1268 {
1269         void (*loader)(bd_t *, image_header_t *, char *, char *);
1270         image_header_t *os_hdr, *hdr;
1271         ulong kernel_data, kernel_len;
1272         char *consdev;
1273         char *cmdline;
1274
1275         if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
1276                 return 1;
1277
1278 #if defined(CONFIG_FIT)
1279         if (!images->legacy_hdr_valid) {
1280                 fit_unsupported_reset("NetBSD");
1281                 return 1;
1282         }
1283 #endif
1284         hdr = images->legacy_hdr_os;
1285
1286         /*
1287          * Booting a (NetBSD) kernel image
1288          *
1289          * This process is pretty similar to a standalone application:
1290          * The (first part of an multi-) image must be a stage-2 loader,
1291          * which in turn is responsible for loading & invoking the actual
1292          * kernel.  The only differences are the parameters being passed:
1293          * besides the board info strucure, the loader expects a command
1294          * line, the name of the console device, and (optionally) the
1295          * address of the original image header.
1296          */
1297         os_hdr = NULL;
1298         if (image_check_type(&images->legacy_hdr_os_copy, IH_TYPE_MULTI)) {
1299                 image_multi_getimg(hdr, 1, &kernel_data, &kernel_len);
1300                 if (kernel_len)
1301                         os_hdr = hdr;
1302         }
1303
1304         consdev = "";
1305 #if   defined(CONFIG_8xx_CONS_SMC1)
1306         consdev = "smc1";
1307 #elif defined(CONFIG_8xx_CONS_SMC2)
1308         consdev = "smc2";
1309 #elif defined(CONFIG_8xx_CONS_SCC2)
1310         consdev = "scc2";
1311 #elif defined(CONFIG_8xx_CONS_SCC3)
1312         consdev = "scc3";
1313 #endif
1314
1315         if (argc > 2) {
1316                 ulong len;
1317                 int   i;
1318
1319                 for (i = 2, len = 0; i < argc; i += 1)
1320                         len += strlen(argv[i]) + 1;
1321                 cmdline = malloc(len);
1322
1323                 for (i = 2, len = 0; i < argc; i += 1) {
1324                         if (i > 2)
1325                                 cmdline[len++] = ' ';
1326                         strcpy(&cmdline[len], argv[i]);
1327                         len += strlen(argv[i]);
1328                 }
1329         } else if ((cmdline = getenv("bootargs")) == NULL) {
1330                 cmdline = "";
1331         }
1332
1333         loader = (void (*)(bd_t *, image_header_t *, char *, char *))images->ep;
1334
1335         printf("## Transferring control to NetBSD stage-2 loader "
1336                 "(at address %08lx) ...\n",
1337                 (ulong)loader);
1338
1339         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
1340
1341         /*
1342          * NetBSD Stage-2 Loader Parameters:
1343          *   r3: ptr to board info data
1344          *   r4: image address
1345          *   r5: console device
1346          *   r6: boot args string
1347          */
1348         (*loader)(gd->bd, os_hdr, consdev, cmdline);
1349
1350         return 1;
1351 }
1352 #endif /* CONFIG_BOOTM_NETBSD*/
1353
1354 #ifdef CONFIG_LYNXKDI
1355 static int do_bootm_lynxkdi(int flag, int argc, char * const argv[],
1356                              bootm_headers_t *images)
1357 {
1358         image_header_t *hdr = &images->legacy_hdr_os_copy;
1359
1360         if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
1361                 return 1;
1362
1363 #if defined(CONFIG_FIT)
1364         if (!images->legacy_hdr_valid) {
1365                 fit_unsupported_reset("Lynx");
1366                 return 1;
1367         }
1368 #endif
1369
1370         lynxkdi_boot((image_header_t *)hdr);
1371
1372         return 1;
1373 }
1374 #endif /* CONFIG_LYNXKDI */
1375
1376 #ifdef CONFIG_BOOTM_RTEMS
1377 static int do_bootm_rtems(int flag, int argc, char * const argv[],
1378                            bootm_headers_t *images)
1379 {
1380         void (*entry_point)(bd_t *);
1381
1382         if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
1383                 return 1;
1384
1385 #if defined(CONFIG_FIT)
1386         if (!images->legacy_hdr_valid) {
1387                 fit_unsupported_reset("RTEMS");
1388                 return 1;
1389         }
1390 #endif
1391
1392         entry_point = (void (*)(bd_t *))images->ep;
1393
1394         printf("## Transferring control to RTEMS (at address %08lx) ...\n",
1395                 (ulong)entry_point);
1396
1397         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
1398
1399         /*
1400          * RTEMS Parameters:
1401          *   r3: ptr to board info data
1402          */
1403         (*entry_point)(gd->bd);
1404
1405         return 1;
1406 }
1407 #endif /* CONFIG_BOOTM_RTEMS */
1408
1409 #if defined(CONFIG_BOOTM_OSE)
1410 static int do_bootm_ose(int flag, int argc, char * const argv[],
1411                            bootm_headers_t *images)
1412 {
1413         void (*entry_point)(void);
1414
1415         if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
1416                 return 1;
1417
1418 #if defined(CONFIG_FIT)
1419         if (!images->legacy_hdr_valid) {
1420                 fit_unsupported_reset("OSE");
1421                 return 1;
1422         }
1423 #endif
1424
1425         entry_point = (void (*)(void))images->ep;
1426
1427         printf("## Transferring control to OSE (at address %08lx) ...\n",
1428                 (ulong)entry_point);
1429
1430         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
1431
1432         /*
1433          * OSE Parameters:
1434          *   None
1435          */
1436         (*entry_point)();
1437
1438         return 1;
1439 }
1440 #endif /* CONFIG_BOOTM_OSE */
1441
1442 #if defined(CONFIG_CMD_ELF)
1443 static int do_bootm_vxworks(int flag, int argc, char * const argv[],
1444                              bootm_headers_t *images)
1445 {
1446         char str[80];
1447
1448         if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
1449                 return 1;
1450
1451 #if defined(CONFIG_FIT)
1452         if (!images->legacy_hdr_valid) {
1453                 fit_unsupported_reset("VxWorks");
1454                 return 1;
1455         }
1456 #endif
1457
1458         sprintf(str, "%lx", images->ep); /* write entry-point into string */
1459         setenv("loadaddr", str);
1460         do_bootvx(NULL, 0, 0, NULL);
1461
1462         return 1;
1463 }
1464
1465 static int do_bootm_qnxelf(int flag, int argc, char * const argv[],
1466                             bootm_headers_t *images)
1467 {
1468         char *local_args[2];
1469         char str[16];
1470
1471         if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
1472                 return 1;
1473
1474 #if defined(CONFIG_FIT)
1475         if (!images->legacy_hdr_valid) {
1476                 fit_unsupported_reset("QNX");
1477                 return 1;
1478         }
1479 #endif
1480
1481         sprintf(str, "%lx", images->ep); /* write entry-point into string */
1482         local_args[0] = argv[0];
1483         local_args[1] = str;    /* and provide it via the arguments */
1484         do_bootelf(NULL, 0, 2, local_args);
1485
1486         return 1;
1487 }
1488 #endif
1489
1490 #ifdef CONFIG_INTEGRITY
1491 static int do_bootm_integrity(int flag, int argc, char * const argv[],
1492                            bootm_headers_t *images)
1493 {
1494         void (*entry_point)(void);
1495
1496         if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
1497                 return 1;
1498
1499 #if defined(CONFIG_FIT)
1500         if (!images->legacy_hdr_valid) {
1501                 fit_unsupported_reset("INTEGRITY");
1502                 return 1;
1503         }
1504 #endif
1505
1506         entry_point = (void (*)(void))images->ep;
1507
1508         printf("## Transferring control to INTEGRITY (at address %08lx) ...\n",
1509                 (ulong)entry_point);
1510
1511         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
1512
1513         /*
1514          * INTEGRITY Parameters:
1515          *   None
1516          */
1517         (*entry_point)();
1518
1519         return 1;
1520 }
1521 #endif
1522
1523 #ifdef CONFIG_CMD_BOOTZ
1524
1525 static int __bootz_setup(void *image, void **start, void **end)
1526 {
1527         /* Please define bootz_setup() for your platform */
1528
1529         puts("Your platform's zImage format isn't supported yet!\n");
1530         return -1;
1531 }
1532 int bootz_setup(void *image, void **start, void **end)
1533         __attribute__((weak, alias("__bootz_setup")));
1534
1535 /*
1536  * zImage booting support
1537  */
1538 static int bootz_start(cmd_tbl_t *cmdtp, int flag, int argc,
1539                         char * const argv[], bootm_headers_t *images)
1540 {
1541         int ret;
1542         void *zi_start, *zi_end;
1543
1544         memset(images, 0, sizeof(bootm_headers_t));
1545
1546         boot_start_lmb(images);
1547
1548         /* Setup Linux kernel zImage entry point */
1549         if (argc < 2) {
1550                 images->ep = load_addr;
1551                 debug("*  kernel: default image load address = 0x%08lx\n",
1552                                 load_addr);
1553         } else {
1554                 images->ep = simple_strtoul(argv[1], NULL, 16);
1555                 debug("*  kernel: cmdline image address = 0x%08lx\n",
1556                         images->ep);
1557         }
1558
1559         ret = bootz_setup((void *)images->ep, &zi_start, &zi_end);
1560         if (ret != 0)
1561                 return 1;
1562
1563         lmb_reserve(&images->lmb, images->ep, zi_end - zi_start);
1564
1565         /* Find ramdisk */
1566         ret = boot_get_ramdisk(argc, argv, images, IH_INITRD_ARCH,
1567                         &images->rd_start, &images->rd_end);
1568         if (ret) {
1569                 puts("Ramdisk image is corrupt or invalid\n");
1570                 return 1;
1571         }
1572
1573 #if defined(CONFIG_OF_LIBFDT)
1574         /* find flattened device tree */
1575         ret = boot_get_fdt(flag, argc, argv, images,
1576                            &images->ft_addr, &images->ft_len);
1577         if (ret) {
1578                 puts("Could not find a valid device tree\n");
1579                 return 1;
1580         }
1581
1582         set_working_fdt_addr(images->ft_addr);
1583 #endif
1584
1585         return 0;
1586 }
1587
1588 static int do_bootz(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1589 {
1590         ulong           iflag;
1591         bootm_headers_t images;
1592
1593         if (bootz_start(cmdtp, flag, argc, argv, &images))
1594                 return 1;
1595
1596         /*
1597          * We have reached the point of no return: we are going to
1598          * overwrite all exception vector code, so we cannot easily
1599          * recover from any failures any more...
1600          */
1601         iflag = disable_interrupts();
1602
1603 #if defined(CONFIG_CMD_USB)
1604         /*
1605          * turn off USB to prevent the host controller from writing to the
1606          * SDRAM while Linux is booting. This could happen (at least for OHCI
1607          * controller), because the HCCA (Host Controller Communication Area)
1608          * lies within the SDRAM and the host controller writes continously to
1609          * this area (as busmaster!). The HccaFrameNumber is for example
1610          * updated every 1 ms within the HCCA structure in SDRAM! For more
1611          * details see the OpenHCI specification.
1612          */
1613         usb_stop();
1614 #endif
1615
1616 #ifdef CONFIG_SILENT_CONSOLE
1617         fixup_silent_linux();
1618 #endif
1619         arch_preboot_os();
1620
1621         do_bootm_linux(0, argc, argv, &images);
1622 #ifdef DEBUG
1623         puts("\n## Control returned to monitor - resetting...\n");
1624 #endif
1625         do_reset(cmdtp, flag, argc, argv);
1626
1627         return 1;
1628 }
1629
1630 U_BOOT_CMD(
1631         bootz,  CONFIG_SYS_MAXARGS,     1,      do_bootz,
1632         "boot Linux zImage image from memory",
1633         "[addr [initrd[:size]] [fdt]]\n"
1634         "    - boot Linux zImage stored in memory\n"
1635         "\tThe argument 'initrd' is optional and specifies the address\n"
1636         "\tof the initrd in memory. The optional argument ':size' allows\n"
1637         "\tspecifying the size of RAW initrd.\n"
1638 #if defined(CONFIG_OF_LIBFDT)
1639         "\tWhen booting a Linux kernel which requires a flat device-tree\n"
1640         "\ta third argument is required which is the address of the\n"
1641         "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
1642         "\tuse a '-' for the second argument. If you do not pass a third\n"
1643         "\ta bd_info struct will be passed instead\n"
1644 #endif
1645 );
1646 #endif  /* CONFIG_CMD_BOOTZ */