/* * (C) Copyright 2000-2006 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ /* * Boot support */ #include #include #include #include #include #include #include #include #include #if defined(CONFIG_OF_LIBFDT) #include #include #include #endif #if defined(CONFIG_OF_FLAT_TREE) #include #endif DECLARE_GLOBAL_DATA_PTR; /*cmd_boot.c*/ extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); #if (CONFIG_COMMANDS & CFG_CMD_DATE) || defined(CONFIG_TIMESTAMP) #include #endif #ifdef CFG_HUSH_PARSER #include #endif #ifdef CONFIG_SHOW_BOOT_PROGRESS # include # define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg) #else # define SHOW_BOOT_PROGRESS(arg) #endif #ifdef CFG_INIT_RAM_LOCK #include #endif #ifdef CONFIG_LOGBUFFER #include #endif #ifdef CONFIG_HAS_DATAFLASH #include #endif /* * Some systems (for example LWMON) have very short watchdog periods; * we must make sure to split long operations like memmove() or * crc32() into reasonable chunks. */ #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG) # define CHUNKSZ (64 * 1024) #endif int gunzip (void *, int, unsigned char *, unsigned long *); static void *zalloc(void *, unsigned, unsigned); static void zfree(void *, void *, unsigned); #if (CONFIG_COMMANDS & CFG_CMD_IMI) static int image_info (unsigned long addr); #endif #if (CONFIG_COMMANDS & CFG_CMD_IMLS) #include extern flash_info_t flash_info[]; /* info for FLASH chips */ static int do_imls (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); #endif static void print_type (image_header_t *hdr); #ifdef __I386__ image_header_t *fake_header(image_header_t *hdr, void *ptr, int size); #endif /* * Continue booting an OS image; caller already has: * - copied image header to global variable `header' * - checked header magic number, checksums (both header & image), * - verified image architecture (PPC) and type (KERNEL or MULTI), * - loaded (first part of) image to header load address, * - disabled interrupts. */ typedef void boot_os_Fcn (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], ulong addr, /* of image to boot */ ulong *len_ptr, /* multi-file image length table */ int verify); /* getenv("verify")[0] != 'n' */ #ifdef DEBUG extern int do_bdinfo ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); #endif #ifdef CONFIG_PPC static boot_os_Fcn do_bootm_linux; #else extern boot_os_Fcn do_bootm_linux; #endif #ifdef CONFIG_SILENT_CONSOLE static void fixup_silent_linux (void); #endif static boot_os_Fcn do_bootm_netbsd; static boot_os_Fcn do_bootm_rtems; #if (CONFIG_COMMANDS & CFG_CMD_ELF) static boot_os_Fcn do_bootm_vxworks; static boot_os_Fcn do_bootm_qnxelf; int do_bootvx ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[] ); int do_bootelf (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[] ); #endif /* CFG_CMD_ELF */ #if defined(CONFIG_ARTOS) && defined(CONFIG_PPC) static boot_os_Fcn do_bootm_artos; #endif #ifdef CONFIG_LYNXKDI static boot_os_Fcn do_bootm_lynxkdi; extern void lynxkdi_boot( image_header_t * ); #endif #ifndef CFG_BOOTM_LEN #define CFG_BOOTM_LEN 0x800000 /* use 8MByte as default max gunzip size */ #endif image_header_t header; ulong load_addr = CFG_LOAD_ADDR; /* Default Load Address */ int do_bootm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) { ulong iflag; ulong addr; ulong data, len, checksum; ulong *len_ptr; uint unc_len = CFG_BOOTM_LEN; int i, verify; char *name, *s; int (*appl)(int, char *[]); image_header_t *hdr = &header; s = getenv ("verify"); verify = (s && (*s == 'n')) ? 0 : 1; if (argc < 2) { addr = load_addr; } else { addr = simple_strtoul(argv[1], NULL, 16); } SHOW_BOOT_PROGRESS (1); printf ("## Booting image at %08lx ...\n", addr); /* Copy header so we can blank CRC field for re-calculation */ #ifdef CONFIG_HAS_DATAFLASH if (addr_dataflash(addr)){ read_dataflash(addr, sizeof(image_header_t), (char *)&header); } else #endif memmove (&header, (char *)addr, sizeof(image_header_t)); if (ntohl(hdr->ih_magic) != IH_MAGIC) { #ifdef __I386__ /* correct image format not implemented yet - fake it */ if (fake_header(hdr, (void*)addr, -1) != NULL) { /* to compensate for the addition below */ addr -= sizeof(image_header_t); /* turnof verify, * fake_header() does not fake the data crc */ verify = 0; } else #endif /* __I386__ */ { puts ("Bad Magic Number\n"); SHOW_BOOT_PROGRESS (-1); return 1; } } SHOW_BOOT_PROGRESS (2); data = (ulong)&header; len = sizeof(image_header_t); checksum = ntohl(hdr->ih_hcrc); hdr->ih_hcrc = 0; if (crc32 (0, (uchar *)data, len) != checksum) { puts ("Bad Header Checksum\n"); SHOW_BOOT_PROGRESS (-2); return 1; } SHOW_BOOT_PROGRESS (3); #ifdef CONFIG_HAS_DATAFLASH if (addr_dataflash(addr)){ len = ntohl(hdr->ih_size) + sizeof(image_header_t); read_dataflash(addr, len, (char *)CFG_LOAD_ADDR); addr = CFG_LOAD_ADDR; } #endif /* for multi-file images we need the data part, too */ print_image_hdr ((image_header_t *)addr); data = addr + sizeof(image_header_t); len = ntohl(hdr->ih_size); if (verify) { puts (" Verifying Checksum ... "); if (crc32 (0, (uchar *)data, len) != ntohl(hdr->ih_dcrc)) { printf ("Bad Data CRC\n"); SHOW_BOOT_PROGRESS (-3); return 1; } puts ("OK\n"); } SHOW_BOOT_PROGRESS (4); len_ptr = (ulong *)data; #if defined(__ARM__) if (hdr->ih_arch != IH_CPU_ARM) #elif defined(__avr32__) if (hdr->ih_arch != IH_CPU_AVR32) #elif defined(__bfin__) if (hdr->ih_arch != IH_CPU_BLACKFIN) #elif defined(__I386__) if (hdr->ih_arch != IH_CPU_I386) #elif defined(__M68K__) if (hdr->ih_arch != IH_CPU_M68K) #elif defined(__microblaze__) if (hdr->ih_arch != IH_CPU_MICROBLAZE) #elif defined(__mips__) if (hdr->ih_arch != IH_CPU_MIPS) #elif defined(__nios__) if (hdr->ih_arch != IH_CPU_NIOS) #elif defined(__nios2__) if (hdr->ih_arch != IH_CPU_NIOS2) #elif defined(__PPC__) if (hdr->ih_arch != IH_CPU_PPC) #else # error Unknown CPU type #endif { printf ("Unsupported Architecture 0x%x\n", hdr->ih_arch); SHOW_BOOT_PROGRESS (-4); return 1; } SHOW_BOOT_PROGRESS (5); switch (hdr->ih_type) { case IH_TYPE_STANDALONE: name = "Standalone Application"; /* A second argument overwrites the load address */ if (argc > 2) { hdr->ih_load = htonl(simple_strtoul(argv[2], NULL, 16)); } break; case IH_TYPE_KERNEL: name = "Kernel Image"; break; case IH_TYPE_MULTI: name = "Multi-File Image"; len = ntohl(len_ptr[0]); /* OS kernel is always the first image */ data += 8; /* kernel_len + terminator */ for (i=1; len_ptr[i]; ++i) data += 4; break; default: printf ("Wrong Image Type for %s command\n", cmdtp->name); SHOW_BOOT_PROGRESS (-5); return 1; } SHOW_BOOT_PROGRESS (6); /* * We have reached the point of no return: we are going to * overwrite all exception vector code, so we cannot easily * recover from any failures any more... */ iflag = disable_interrupts(); #ifdef CONFIG_AMIGAONEG3SE /* * We've possible left the caches enabled during * bios emulation, so turn them off again */ icache_disable(); invalidate_l1_instruction_cache(); flush_data_cache(); dcache_disable(); #endif switch (hdr->ih_comp) { case IH_COMP_NONE: if(ntohl(hdr->ih_load) == addr) { printf (" XIP %s ... ", name); } else { #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG) size_t l = len; void *to = (void *)ntohl(hdr->ih_load); void *from = (void *)data; printf (" Loading %s ... ", name); while (l > 0) { size_t tail = (l > CHUNKSZ) ? CHUNKSZ : l; WATCHDOG_RESET(); memmove (to, from, tail); to += tail; from += tail; l -= tail; } #else /* !(CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG) */ memmove ((void *) ntohl(hdr->ih_load), (uchar *)data, len); #endif /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */ } break; case IH_COMP_GZIP: printf (" Uncompressing %s ... ", name); if (gunzip ((void *)ntohl(hdr->ih_load), unc_len, (uchar *)data, &len) != 0) { puts ("GUNZIP ERROR - must RESET board to recover\n"); SHOW_BOOT_PROGRESS (-6); do_reset (cmdtp, flag, argc, argv); } break; #ifdef CONFIG_BZIP2 case IH_COMP_BZIP2: printf (" Uncompressing %s ... ", name); /* * If we've got less than 4 MB of malloc() space, * use slower decompression algorithm which requires * at most 2300 KB of memory. */ i = BZ2_bzBuffToBuffDecompress ((char*)ntohl(hdr->ih_load), &unc_len, (char *)data, len, CFG_MALLOC_LEN < (4096 * 1024), 0); if (i != BZ_OK) { printf ("BUNZIP2 ERROR %d - must RESET board to recover\n", i); SHOW_BOOT_PROGRESS (-6); udelay(100000); do_reset (cmdtp, flag, argc, argv); } break; #endif /* CONFIG_BZIP2 */ default: if (iflag) enable_interrupts(); printf ("Unimplemented compression type %d\n", hdr->ih_comp); SHOW_BOOT_PROGRESS (-7); return 1; } puts ("OK\n"); SHOW_BOOT_PROGRESS (7); switch (hdr->ih_type) { case IH_TYPE_STANDALONE: if (iflag) enable_interrupts(); /* load (and uncompress), but don't start if "autostart" * is set to "no" */ if (((s = getenv("autostart")) != NULL) && (strcmp(s,"no") == 0)) { char buf[32]; sprintf(buf, "%lX", len); setenv("filesize", buf); return 0; } appl = (int (*)(int, char *[]))ntohl(hdr->ih_ep); (*appl)(argc-1, &argv[1]); return 0; case IH_TYPE_KERNEL: case IH_TYPE_MULTI: /* handled below */ break; default: if (iflag) enable_interrupts(); printf ("Can't boot image type %d\n", hdr->ih_type); SHOW_BOOT_PROGRESS (-8); return 1; } SHOW_BOOT_PROGRESS (8); switch (hdr->ih_os) { default: /* handled by (original) Linux case */ case IH_OS_LINUX: #ifdef CONFIG_SILENT_CONSOLE fixup_silent_linux(); #endif do_bootm_linux (cmdtp, flag, argc, argv, addr, len_ptr, verify); break; case IH_OS_NETBSD: do_bootm_netbsd (cmdtp, flag, argc, argv, addr, len_ptr, verify); break; #ifdef CONFIG_LYNXKDI case IH_OS_LYNXOS: do_bootm_lynxkdi (cmdtp, flag, argc, argv, addr, len_ptr, verify); break; #endif case IH_OS_RTEMS: do_bootm_rtems (cmdtp, flag, argc, argv, addr, len_ptr, verify); break; #if (CONFIG_COMMANDS & CFG_CMD_ELF) case IH_OS_VXWORKS: do_bootm_vxworks (cmdtp, flag, argc, argv, addr, len_ptr, verify); break; case IH_OS_QNX: do_bootm_qnxelf (cmdtp, flag, argc, argv, addr, len_ptr, verify); break; #endif /* CFG_CMD_ELF */ #ifdef CONFIG_ARTOS case IH_OS_ARTOS: do_bootm_artos (cmdtp, flag, argc, argv, addr, len_ptr, verify); break; #endif } SHOW_BOOT_PROGRESS (-9); #ifdef DEBUG puts ("\n## Control returned to monitor - resetting...\n"); do_reset (cmdtp, flag, argc, argv); #endif return 1; } U_BOOT_CMD( bootm, CFG_MAXARGS, 1, do_bootm, "bootm - boot application image from memory\n", "[addr [arg ...]]\n - boot application image stored in memory\n" "\tpassing arguments 'arg ...'; when booting a Linux kernel,\n" "\t'arg' can be the address of an initrd image\n" #if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT) "\tWhen booting a Linux kernel which requires a flat device-tree\n" "\ta third argument is required which is the address of the of the\n" "\tdevice-tree blob. To boot that kernel without an initrd image,\n" "\tuse a '-' for the second argument. If you do not pass a third\n" "\ta bd_info struct will be passed instead\n" #endif ); #ifdef CONFIG_SILENT_CONSOLE static void fixup_silent_linux () { char buf[256], *start, *end; char *cmdline = getenv ("bootargs"); /* Only fix cmdline when requested */ if (!(gd->flags & GD_FLG_SILENT)) return; debug ("before silent fix-up: %s\n", cmdline); if (cmdline) { if ((start = strstr (cmdline, "console=")) != NULL) { end = strchr (start, ' '); strncpy (buf, cmdline, (start - cmdline + 8)); if (end) strcpy (buf + (start - cmdline + 8), end); else buf[start - cmdline + 8] = '\0'; } else { strcpy (buf, cmdline); strcat (buf, " console="); } } else { strcpy (buf, "console="); } setenv ("bootargs", buf); debug ("after silent fix-up: %s\n", buf); } #endif /* CONFIG_SILENT_CONSOLE */ #ifdef CONFIG_PPC static void __attribute__((noinline)) do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], ulong addr, ulong *len_ptr, int verify) { ulong sp; ulong len, checksum; ulong initrd_start, initrd_end; ulong cmd_start, cmd_end; ulong initrd_high; ulong data; int initrd_copy_to_ram = 1; char *cmdline; char *s; bd_t *kbd; void (*kernel)(bd_t *, ulong, ulong, ulong, ulong); image_header_t *hdr = &header; #if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT) char *of_flat_tree = NULL; ulong of_data = 0; #endif if ((s = getenv ("initrd_high")) != NULL) { /* a value of "no" or a similar string will act like 0, * turning the "load high" feature off. This is intentional. */ initrd_high = simple_strtoul(s, NULL, 16); if (initrd_high == ~0) initrd_copy_to_ram = 0; } else { /* not set, no restrictions to load high */ initrd_high = ~0; } #ifdef CONFIG_LOGBUFFER kbd=gd->bd; /* Prevent initrd from overwriting logbuffer */ if (initrd_high < (kbd->bi_memsize-LOGBUFF_LEN-LOGBUFF_OVERHEAD)) initrd_high = kbd->bi_memsize-LOGBUFF_LEN-LOGBUFF_OVERHEAD; debug ("## Logbuffer at 0x%08lX ", kbd->bi_memsize-LOGBUFF_LEN); #endif /* * Booting a (Linux) kernel image * * Allocate space for command line and board info - the * address should be as high as possible within the reach of * the kernel (see CFG_BOOTMAPSZ settings), but in unused * memory, which means far enough below the current stack * pointer. */ asm( "mr %0,1": "=r"(sp) : ); debug ("## Current stack ends at 0x%08lX ", sp); sp -= 2048; /* just to be sure */ if (sp > CFG_BOOTMAPSZ) sp = CFG_BOOTMAPSZ; sp &= ~0xF; debug ("=> set upper limit to 0x%08lX\n", sp); cmdline = (char *)((sp - CFG_BARGSIZE) & ~0xF); kbd = (bd_t *)(((ulong)cmdline - sizeof(bd_t)) & ~0xF); if ((s = getenv("bootargs")) == NULL) s = ""; strcpy (cmdline, s); cmd_start = (ulong)&cmdline[0]; cmd_end = cmd_start + strlen(cmdline); *kbd = *(gd->bd); #ifdef DEBUG printf ("## cmdline at 0x%08lX ... 0x%08lX\n", cmd_start, cmd_end); do_bdinfo (NULL, 0, 0, NULL); #endif if ((s = getenv ("clocks_in_mhz")) != NULL) { /* convert all clock information to MHz */ kbd->bi_intfreq /= 1000000L; kbd->bi_busfreq /= 1000000L; #if defined(CONFIG_MPC8220) kbd->bi_inpfreq /= 1000000L; kbd->bi_pcifreq /= 1000000L; kbd->bi_pevfreq /= 1000000L; kbd->bi_flbfreq /= 1000000L; kbd->bi_vcofreq /= 1000000L; #endif #if defined(CONFIG_CPM2) kbd->bi_cpmfreq /= 1000000L; kbd->bi_brgfreq /= 1000000L; kbd->bi_sccfreq /= 1000000L; kbd->bi_vco /= 1000000L; #endif #if defined(CONFIG_MPC5xxx) kbd->bi_ipbfreq /= 1000000L; kbd->bi_pcifreq /= 1000000L; #endif /* CONFIG_MPC5xxx */ } kernel = (void (*)(bd_t *, ulong, ulong, ulong, ulong)) ntohl(hdr->ih_ep); /* * Check if there is an initrd image */ #if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT) /* Look for a '-' which indicates to ignore the ramdisk argument */ if (argc >= 3 && strcmp(argv[2], "-") == 0) { debug ("Skipping initrd\n"); len = data = 0; } else #endif if (argc >= 3) { debug ("Not skipping initrd\n"); SHOW_BOOT_PROGRESS (9); addr = simple_strtoul(argv[2], NULL, 16); printf ("## Loading RAMDisk Image at %08lx ...\n", addr); /* Copy header so we can blank CRC field for re-calculation */ memmove (&header, (char *)addr, sizeof(image_header_t)); if (ntohl(hdr->ih_magic) != IH_MAGIC) { puts ("Bad Magic Number\n"); SHOW_BOOT_PROGRESS (-10); do_reset (cmdtp, flag, argc, argv); } data = (ulong)&header; len = sizeof(image_header_t); checksum = ntohl(hdr->ih_hcrc); hdr->ih_hcrc = 0; if (crc32 (0, (uchar *)data, len) != checksum) { puts ("Bad Header Checksum\n"); SHOW_BOOT_PROGRESS (-11); do_reset (cmdtp, flag, argc, argv); } SHOW_BOOT_PROGRESS (10); print_image_hdr (hdr); data = addr + sizeof(image_header_t); len = ntohl(hdr->ih_size); if (verify) { ulong csum = 0; #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG) ulong cdata = data, edata = cdata + len; #endif /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */ puts (" Verifying Checksum ... "); #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG) while (cdata < edata) { ulong chunk = edata - cdata; if (chunk > CHUNKSZ) chunk = CHUNKSZ; csum = crc32 (csum, (uchar *)cdata, chunk); cdata += chunk; WATCHDOG_RESET(); } #else /* !(CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG) */ csum = crc32 (0, (uchar *)data, len); #endif /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */ if (csum != ntohl(hdr->ih_dcrc)) { puts ("Bad Data CRC\n"); SHOW_BOOT_PROGRESS (-12); do_reset (cmdtp, flag, argc, argv); } puts ("OK\n"); } SHOW_BOOT_PROGRESS (11); if ((hdr->ih_os != IH_OS_LINUX) || (hdr->ih_arch != IH_CPU_PPC) || (hdr->ih_type != IH_TYPE_RAMDISK) ) { puts ("No Linux PPC Ramdisk Image\n"); SHOW_BOOT_PROGRESS (-13); do_reset (cmdtp, flag, argc, argv); } /* * Now check if we have a multifile image */ } else if ((hdr->ih_type==IH_TYPE_MULTI) && (len_ptr[1])) { u_long tail = ntohl(len_ptr[0]) % 4; int i; SHOW_BOOT_PROGRESS (13); /* skip kernel length and terminator */ data = (ulong)(&len_ptr[2]); /* skip any additional image length fields */ for (i=1; len_ptr[i]; ++i) data += 4; /* add kernel length, and align */ data += ntohl(len_ptr[0]); if (tail) { data += 4 - tail; } len = ntohl(len_ptr[1]); } else { /* * no initrd image */ SHOW_BOOT_PROGRESS (14); len = data = 0; } #if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT) if(argc > 3) { of_flat_tree = (char *) simple_strtoul(argv[3], NULL, 16); hdr = (image_header_t *)of_flat_tree; #if defined(CONFIG_OF_LIBFDT) if (fdt_check_header(of_flat_tree) == 0) { #else if (*(ulong *)of_flat_tree == OF_DT_HEADER) { #endif #ifndef CFG_NO_FLASH if (addr2info((ulong)of_flat_tree) != NULL) of_data = (ulong)of_flat_tree; #endif } else if (ntohl(hdr->ih_magic) == IH_MAGIC) { printf("## Flat Device Tree Image at %08lX\n", hdr); print_image_hdr(hdr); if ((ntohl(hdr->ih_load) < ((unsigned long)hdr + ntohl(hdr->ih_size) + sizeof(hdr))) && ((ntohl(hdr->ih_load) + ntohl(hdr->ih_size)) > (unsigned long)hdr)) { printf ("ERROR: Load address overwrites Flat Device Tree uImage\n"); return; } printf(" Verifying Checksum ... "); memmove (&header, (char *)hdr, sizeof(image_header_t)); checksum = ntohl(header.ih_hcrc); header.ih_hcrc = 0; if(checksum != crc32(0, (uchar *)&header, sizeof(image_header_t))) { printf("ERROR: Flat Device Tree header checksum is invalid\n"); return; } checksum = ntohl(hdr->ih_dcrc); addr = (ulong)((uchar *)(hdr) + sizeof(image_header_t)); if(checksum != crc32(0, (uchar *)addr, ntohl(hdr->ih_size))) { printf("ERROR: Flat Device Tree checksum is invalid\n"); return; } printf("OK\n"); if (ntohl(hdr->ih_type) != IH_TYPE_FLATDT) { printf ("ERROR: uImage not Flat Device Tree type\n"); return; } if (ntohl(hdr->ih_comp) != IH_COMP_NONE) { printf("ERROR: uImage is not uncompressed\n"); return; } #if defined(CONFIG_OF_LIBFDT) if (fdt_check_header(of_flat_tree + sizeof(image_header_t)) == 0) { #else if (*((ulong *)(of_flat_tree + sizeof(image_header_t))) != OF_DT_HEADER) { #endif printf ("ERROR: uImage data is not a flat device tree\n"); return; } memmove((void *)ntohl(hdr->ih_load), (void *)(of_flat_tree + sizeof(image_header_t)), ntohl(hdr->ih_size)); of_flat_tree = (char *)ntohl(hdr->ih_load); } else { printf ("Did not find a flat flat device tree at address %08lX\n", of_flat_tree); return; } printf (" Booting using flat device tree at 0x%x\n", of_flat_tree); } else if ((hdr->ih_type==IH_TYPE_MULTI) && (len_ptr[1]) && (len_ptr[2])) { u_long tail = ntohl(len_ptr[0]) % 4; int i; /* skip kernel length, initrd length, and terminator */ of_data = (ulong)(&len_ptr[3]); /* skip any additional image length fields */ for (i=2; len_ptr[i]; ++i) of_data += 4; /* add kernel length, and align */ of_data += ntohl(len_ptr[0]); if (tail) { of_data += 4 - tail; } /* add initrd length, and align */ tail = ntohl(len_ptr[1]) % 4; of_data += ntohl(len_ptr[1]); if (tail) { of_data += 4 - tail; } #if defined(CONFIG_OF_LIBFDT) if (fdt_check_header((void *)of_data) != 0) { #else if (((struct boot_param_header *)of_data)->magic != OF_DT_HEADER) { #endif printf ("ERROR: image is not a flat device tree\n"); return; } #if defined(CONFIG_OF_LIBFDT) if (be32_to_cpu(fdt_totalsize(of_data)) != ntohl(len_ptr[2])) { #else if (((struct boot_param_header *)of_data)->totalsize != ntohl(len_ptr[2])) { #endif printf ("ERROR: flat device tree size does not agree with image\n"); return; } } #endif if (!data) { debug ("No initrd\n"); } if (data) { if (!initrd_copy_to_ram) { /* zero-copy ramdisk support */ initrd_start = data; initrd_end = initrd_start + len; } else { initrd_start = (ulong)kbd - len; initrd_start &= ~(4096 - 1); /* align on page */ if (initrd_high) { ulong nsp; /* * the inital ramdisk does not need to be within * CFG_BOOTMAPSZ as it is not accessed until after * the mm system is initialised. * * do the stack bottom calculation again and see if * the initrd will fit just below the monitor stack * bottom without overwriting the area allocated * above for command line args and board info. */ asm( "mr %0,1": "=r"(nsp) : ); nsp -= 2048; /* just to be sure */ nsp &= ~0xF; if (nsp > initrd_high) /* limit as specified */ nsp = initrd_high; nsp -= len; nsp &= ~(4096 - 1); /* align on page */ if (nsp >= sp) initrd_start = nsp; } SHOW_BOOT_PROGRESS (12); debug ("## initrd at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n", data, data + len - 1, len, len); initrd_end = initrd_start + len; printf (" Loading Ramdisk to %08lx, end %08lx ... ", initrd_start, initrd_end); #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG) { size_t l = len; void *to = (void *)initrd_start; void *from = (void *)data; while (l > 0) { size_t tail = (l > CHUNKSZ) ? CHUNKSZ : l; WATCHDOG_RESET(); memmove (to, from, tail); to += tail; from += tail; l -= tail; } } #else /* !(CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG) */ memmove ((void *)initrd_start, (void *)data, len); #endif /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */ puts ("OK\n"); } } else { initrd_start = 0; initrd_end = 0; } debug ("## Transferring control to Linux (at address %08lx) ...\n", (ulong)kernel); SHOW_BOOT_PROGRESS (15); #if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500) unlock_ram_in_cache(); #endif #if defined(CONFIG_OF_LIBFDT) /* move of_flat_tree if needed */ if (of_data) { int err; ulong of_start, of_len; of_len = be32_to_cpu(fdt_totalsize(of_data)); /* position on a 4K boundary before the initrd/kbd */ if (initrd_start) of_start = initrd_start - of_len; else of_start = (ulong)kbd - of_len; of_start &= ~(4096 - 1); /* align on page */ debug ("## device tree at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n", of_data, of_data + of_len - 1, of_len, of_len); of_flat_tree = (char *)of_start; printf (" Loading Device Tree to %08lx, end %08lx ... ", of_start, of_start + of_len - 1); err = fdt_open_into((void *)of_start, (void *)of_data, of_len); if (err != 0) { printf ("libfdt: %s " __FILE__ " %d\n", fdt_strerror(err), __LINE__); } /* * Add the chosen node if it doesn't exist, add the env and bd_t * if the user wants it (the logic is in the subroutines). */ if (fdt_chosen(of_flat_tree, initrd_start, initrd_end, 0) < 0) { printf("Failed creating the /chosen node (0x%08X), aborting.\n", of_flat_tree); return; } #ifdef CONFIG_OF_HAS_UBOOT_ENV if (fdt_env(of_flat_tree) < 0) { printf("Failed creating the /u-boot-env node, aborting.\n"); return; } #endif #ifdef CONFIG_OF_HAS_BD_T if (fdt_bd_t(of_flat_tree) < 0) { printf("Failed creating the /bd_t node, aborting.\n"); return; } #endif } #endif #if defined(CONFIG_OF_FLAT_TREE) /* move of_flat_tree if needed */ if (of_data) { ulong of_start, of_len; of_len = ((struct boot_param_header *)of_data)->totalsize; /* provide extra 8k pad */ if (initrd_start) of_start = initrd_start - of_len - 8192; else of_start = (ulong)kbd - of_len - 8192; of_start &= ~(4096 - 1); /* align on page */ debug ("## device tree at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n", of_data, of_data + of_len - 1, of_len, of_len); of_flat_tree = (char *)of_start; printf (" Loading Device Tree to %08lx, end %08lx ... ", of_start, of_start + of_len - 1); memmove ((void *)of_start, (void *)of_data, of_len); } #endif /* * Linux Kernel Parameters (passing board info data): * r3: ptr to board info data * r4: initrd_start or 0 if no initrd * r5: initrd_end - unused if r4 is 0 * r6: Start of command line string * r7: End of command line string */ #if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT) if (!of_flat_tree) /* no device tree; boot old style */ #endif (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end); /* does not return */ #if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT) /* * Linux Kernel Parameters (passing device tree): * r3: ptr to OF flat tree, followed by the board info data * r4: physical pointer to the kernel itself * r5: NULL * r6: NULL * r7: NULL */ #if defined(CONFIG_OF_FLAT_TREE) ft_setup(of_flat_tree, kbd, initrd_start, initrd_end); /* ft_dump_blob(of_flat_tree); */ #endif #if defined(CONFIG_OF_LIBFDT) if (fdt_chosen(of_flat_tree, initrd_start, initrd_end, 0) < 0) { printf("Failed creating the /chosen node (0x%08X), aborting.\n", of_flat_tree); return; } #ifdef CONFIG_OF_HAS_UBOOT_ENV if (fdt_env(of_flat_tree) < 0) { printf("Failed creating the /u-boot-env node, aborting.\n"); return; } #endif #ifdef CONFIG_OF_HAS_BD_T if (fdt_bd_t(of_flat_tree) < 0) { printf("Failed creating the /bd_t node, aborting.\n"); return; } #endif #endif /* if defined(CONFIG_OF_LIBFDT) */ (*kernel) ((bd_t *)of_flat_tree, (ulong)kernel, 0, 0, 0); #endif } #endif /* CONFIG_PPC */ static void do_bootm_netbsd (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], ulong addr, ulong *len_ptr, int verify) { image_header_t *hdr = &header; void (*loader)(bd_t *, image_header_t *, char *, char *); image_header_t *img_addr; char *consdev; char *cmdline; /* * Booting a (NetBSD) kernel image * * This process is pretty similar to a standalone application: * The (first part of an multi-) image must be a stage-2 loader, * which in turn is responsible for loading & invoking the actual * kernel. The only differences are the parameters being passed: * besides the board info strucure, the loader expects a command * line, the name of the console device, and (optionally) the * address of the original image header. */ img_addr = 0; if ((hdr->ih_type==IH_TYPE_MULTI) && (len_ptr[1])) img_addr = (image_header_t *) addr; consdev = ""; #if defined (CONFIG_8xx_CONS_SMC1) consdev = "smc1"; #elif defined (CONFIG_8xx_CONS_SMC2) consdev = "smc2"; #elif defined (CONFIG_8xx_CONS_SCC2) consdev = "scc2"; #elif defined (CONFIG_8xx_CONS_SCC3) consdev = "scc3"; #endif if (argc > 2) { ulong len; int i; for (i=2, len=0 ; i 2) cmdline[len++] = ' '; strcpy (&cmdline[len], argv[i]); len += strlen (argv[i]); } } else if ((cmdline = getenv("bootargs")) == NULL) { cmdline = ""; } loader = (void (*)(bd_t *, image_header_t *, char *, char *)) ntohl(hdr->ih_ep); printf ("## Transferring control to NetBSD stage-2 loader (at address %08lx) ...\n", (ulong)loader); SHOW_BOOT_PROGRESS (15); /* * NetBSD Stage-2 Loader Parameters: * r3: ptr to board info data * r4: image address * r5: console device * r6: boot args string */ (*loader) (gd->bd, img_addr, consdev, cmdline); } #if defined(CONFIG_ARTOS) && defined(CONFIG_PPC) /* Function that returns a character from the environment */ extern uchar (*env_get_char)(int); static void do_bootm_artos (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], ulong addr, ulong *len_ptr, int verify) { ulong top; char *s, *cmdline; char **fwenv, **ss; int i, j, nxt, len, envno, envsz; bd_t *kbd; void (*entry)(bd_t *bd, char *cmdline, char **fwenv, ulong top); image_header_t *hdr = &header; /* * Booting an ARTOS kernel image + application */ /* this used to be the top of memory, but was wrong... */ #ifdef CONFIG_PPC /* get stack pointer */ asm volatile ("mr %0,1" : "=r"(top) ); #endif debug ("## Current stack ends at 0x%08lX ", top); top -= 2048; /* just to be sure */ if (top > CFG_BOOTMAPSZ) top = CFG_BOOTMAPSZ; top &= ~0xF; debug ("=> set upper limit to 0x%08lX\n", top); /* first check the artos specific boot args, then the linux args*/ if ((s = getenv("abootargs")) == NULL && (s = getenv("bootargs")) == NULL) s = ""; /* get length of cmdline, and place it */ len = strlen(s); top = (top - (len + 1)) & ~0xF; cmdline = (char *)top; debug ("## cmdline at 0x%08lX ", top); strcpy(cmdline, s); /* copy bdinfo */ top = (top - sizeof(bd_t)) & ~0xF; debug ("## bd at 0x%08lX ", top); kbd = (bd_t *)top; memcpy(kbd, gd->bd, sizeof(bd_t)); /* first find number of env entries, and their size */ envno = 0; envsz = 0; for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) { for (nxt = i; env_get_char(nxt) != '\0'; ++nxt) ; envno++; envsz += (nxt - i) + 1; /* plus trailing zero */ } envno++; /* plus the terminating zero */ debug ("## %u envvars total size %u ", envno, envsz); top = (top - sizeof(char **)*envno) & ~0xF; fwenv = (char **)top; debug ("## fwenv at 0x%08lX ", top); top = (top - envsz) & ~0xF; s = (char *)top; ss = fwenv; /* now copy them */ for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) { for (nxt = i; env_get_char(nxt) != '\0'; ++nxt) ; *ss++ = s; for (j = i; j < nxt; ++j) *s++ = env_get_char(j); *s++ = '\0'; } *ss++ = NULL; /* terminate */ entry = (void (*)(bd_t *, char *, char **, ulong))ntohl(hdr->ih_ep); (*entry)(kbd, cmdline, fwenv, top); } #endif #if (CONFIG_COMMANDS & CFG_CMD_BOOTD) int do_bootd (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) { int rcode = 0; #ifndef CFG_HUSH_PARSER if (run_command (getenv ("bootcmd"), flag) < 0) rcode = 1; #else if (parse_string_outer(getenv("bootcmd"), FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP) != 0 ) rcode = 1; #endif return rcode; } U_BOOT_CMD( boot, 1, 1, do_bootd, "boot - boot default, i.e., run 'bootcmd'\n", NULL ); /* keep old command name "bootd" for backward compatibility */ U_BOOT_CMD( bootd, 1, 1, do_bootd, "bootd - boot default, i.e., run 'bootcmd'\n", NULL ); #endif #if (CONFIG_COMMANDS & CFG_CMD_IMI) int do_iminfo ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) { int arg; ulong addr; int rcode=0; if (argc < 2) { return image_info (load_addr); } for (arg=1; arg ih_magic) != IH_MAGIC) { puts (" Bad Magic Number\n"); return 1; } data = (ulong)&header; len = sizeof(image_header_t); checksum = ntohl(hdr->ih_hcrc); hdr->ih_hcrc = 0; if (crc32 (0, (uchar *)data, len) != checksum) { puts (" Bad Header Checksum\n"); return 1; } /* for multi-file images we need the data part, too */ print_image_hdr ((image_header_t *)addr); data = addr + sizeof(image_header_t); len = ntohl(hdr->ih_size); puts (" Verifying Checksum ... "); if (crc32 (0, (uchar *)data, len) != ntohl(hdr->ih_dcrc)) { puts (" Bad Data CRC\n"); return 1; } puts ("OK\n"); return 0; } U_BOOT_CMD( iminfo, CFG_MAXARGS, 1, do_iminfo, "iminfo - print header information for application image\n", "addr [addr ...]\n" " - print header information for application image starting at\n" " address 'addr' in memory; this includes verification of the\n" " image contents (magic number, header and payload checksums)\n" ); #endif /* CFG_CMD_IMI */ #if (CONFIG_COMMANDS & CFG_CMD_IMLS) /*----------------------------------------------------------------------- * List all images found in flash. */ int do_imls (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) { flash_info_t *info; int i, j; image_header_t *hdr; ulong data, len, checksum; for (i=0, info=&flash_info[0]; iflash_id == FLASH_UNKNOWN) goto next_bank; for (j=0; jsector_count; ++j) { if (!(hdr=(image_header_t *)info->start[j]) || (ntohl(hdr->ih_magic) != IH_MAGIC)) goto next_sector; /* Copy header so we can blank CRC field for re-calculation */ memmove (&header, (char *)hdr, sizeof(image_header_t)); checksum = ntohl(header.ih_hcrc); header.ih_hcrc = 0; if (crc32 (0, (uchar *)&header, sizeof(image_header_t)) != checksum) goto next_sector; printf ("Image at %08lX:\n", (ulong)hdr); print_image_hdr( hdr ); data = (ulong)hdr + sizeof(image_header_t); len = ntohl(hdr->ih_size); puts (" Verifying Checksum ... "); if (crc32 (0, (uchar *)data, len) != ntohl(hdr->ih_dcrc)) { puts (" Bad Data CRC\n"); } puts ("OK\n"); next_sector: ; } next_bank: ; } return (0); } U_BOOT_CMD( imls, 1, 1, do_imls, "imls - list all images found in flash\n", "\n" " - Prints information about all images found at sector\n" " boundaries in flash.\n" ); #endif /* CFG_CMD_IMLS */ void print_image_hdr (image_header_t *hdr) { #if (CONFIG_COMMANDS & CFG_CMD_DATE) || defined(CONFIG_TIMESTAMP) time_t timestamp = (time_t)ntohl(hdr->ih_time); struct rtc_time tm; #endif printf (" Image Name: %.*s\n", IH_NMLEN, hdr->ih_name); #if (CONFIG_COMMANDS & CFG_CMD_DATE) || defined(CONFIG_TIMESTAMP) to_tm (timestamp, &tm); printf (" Created: %4d-%02d-%02d %2d:%02d:%02d UTC\n", tm.tm_year, tm.tm_mon, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec); #endif /* CFG_CMD_DATE, CONFIG_TIMESTAMP */ puts (" Image Type: "); print_type(hdr); printf ("\n Data Size: %d Bytes = ", ntohl(hdr->ih_size)); print_size (ntohl(hdr->ih_size), "\n"); printf (" Load Address: %08x\n" " Entry Point: %08x\n", ntohl(hdr->ih_load), ntohl(hdr->ih_ep)); if (hdr->ih_type == IH_TYPE_MULTI) { int i; ulong len; ulong *len_ptr = (ulong *)((ulong)hdr + sizeof(image_header_t)); puts (" Contents:\n"); for (i=0; (len = ntohl(*len_ptr)); ++i, ++len_ptr) { printf (" Image %d: %8ld Bytes = ", i, len); print_size (len, "\n"); } } } static void print_type (image_header_t *hdr) { char *os, *arch, *type, *comp; switch (hdr->ih_os) { case IH_OS_INVALID: os = "Invalid OS"; break; case IH_OS_NETBSD: os = "NetBSD"; break; case IH_OS_LINUX: os = "Linux"; break; case IH_OS_VXWORKS: os = "VxWorks"; break; case IH_OS_QNX: os = "QNX"; break; case IH_OS_U_BOOT: os = "U-Boot"; break; case IH_OS_RTEMS: os = "RTEMS"; break; #ifdef CONFIG_ARTOS case IH_OS_ARTOS: os = "ARTOS"; break; #endif #ifdef CONFIG_LYNXKDI case IH_OS_LYNXOS: os = "LynxOS"; break; #endif default: os = "Unknown OS"; break; } switch (hdr->ih_arch) { case IH_CPU_INVALID: arch = "Invalid CPU"; break; case IH_CPU_ALPHA: arch = "Alpha"; break; case IH_CPU_ARM: arch = "ARM"; break; case IH_CPU_AVR32: arch = "AVR32"; break; case IH_CPU_BLACKFIN: arch = "Blackfin"; break; case IH_CPU_I386: arch = "Intel x86"; break; case IH_CPU_IA64: arch = "IA64"; break; case IH_CPU_M68K: arch = "M68K"; break; case IH_CPU_MICROBLAZE: arch = "Microblaze"; break; case IH_CPU_MIPS64: arch = "MIPS 64 Bit"; break; case IH_CPU_MIPS: arch = "MIPS"; break; case IH_CPU_NIOS2: arch = "Nios-II"; break; case IH_CPU_NIOS: arch = "Nios"; break; case IH_CPU_PPC: arch = "PowerPC"; break; case IH_CPU_S390: arch = "IBM S390"; break; case IH_CPU_SH: arch = "SuperH"; break; case IH_CPU_SPARC64: arch = "SPARC 64 Bit"; break; case IH_CPU_SPARC: arch = "SPARC"; break; default: arch = "Unknown Architecture"; break; } switch (hdr->ih_type) { case IH_TYPE_INVALID: type = "Invalid Image"; break; case IH_TYPE_STANDALONE:type = "Standalone Program"; break; case IH_TYPE_KERNEL: type = "Kernel Image"; break; case IH_TYPE_RAMDISK: type = "RAMDisk Image"; break; case IH_TYPE_MULTI: type = "Multi-File Image"; break; case IH_TYPE_FIRMWARE: type = "Firmware"; break; case IH_TYPE_SCRIPT: type = "Script"; break; case IH_TYPE_FLATDT: type = "Flat Device Tree"; break; default: type = "Unknown Image"; break; } switch (hdr->ih_comp) { case IH_COMP_NONE: comp = "uncompressed"; break; case IH_COMP_GZIP: comp = "gzip compressed"; break; case IH_COMP_BZIP2: comp = "bzip2 compressed"; break; default: comp = "unknown compression"; break; } printf ("%s %s %s (%s)", arch, os, type, comp); } #define ZALLOC_ALIGNMENT 16 static void *zalloc(void *x, unsigned items, unsigned size) { void *p; size *= items; size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1); p = malloc (size); return (p); } static void zfree(void *x, void *addr, unsigned nb) { free (addr); } #define HEAD_CRC 2 #define EXTRA_FIELD 4 #define ORIG_NAME 8 #define COMMENT 0x10 #define RESERVED 0xe0 #define DEFLATED 8 int gunzip(void *dst, int dstlen, unsigned char *src, unsigned long *lenp) { z_stream s; int r, i, flags; /* skip header */ i = 10; flags = src[3]; if (src[2] != DEFLATED || (flags & RESERVED) != 0) { puts ("Error: Bad gzipped data\n"); return (-1); } if ((flags & EXTRA_FIELD) != 0) i = 12 + src[10] + (src[11] << 8); if ((flags & ORIG_NAME) != 0) while (src[i++] != 0) ; if ((flags & COMMENT) != 0) while (src[i++] != 0) ; if ((flags & HEAD_CRC) != 0) i += 2; if (i >= *lenp) { puts ("Error: gunzip out of data in header\n"); return (-1); } s.zalloc = zalloc; s.zfree = zfree; #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG) s.outcb = (cb_func)WATCHDOG_RESET; #else s.outcb = Z_NULL; #endif /* CONFIG_HW_WATCHDOG */ r = inflateInit2(&s, -MAX_WBITS); if (r != Z_OK) { printf ("Error: inflateInit2() returned %d\n", r); return (-1); } s.next_in = src + i; s.avail_in = *lenp - i; s.next_out = dst; s.avail_out = dstlen; r = inflate(&s, Z_FINISH); if (r != Z_OK && r != Z_STREAM_END) { printf ("Error: inflate() returned %d\n", r); return (-1); } *lenp = s.next_out - (unsigned char *) dst; inflateEnd(&s); return (0); } #ifdef CONFIG_BZIP2 void bz_internal_error(int errcode) { printf ("BZIP2 internal error %d\n", errcode); } #endif /* CONFIG_BZIP2 */ static void do_bootm_rtems (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], ulong addr, ulong *len_ptr, int verify) { image_header_t *hdr = &header; void (*entry_point)(bd_t *); entry_point = (void (*)(bd_t *)) ntohl(hdr->ih_ep); printf ("## Transferring control to RTEMS (at address %08lx) ...\n", (ulong)entry_point); SHOW_BOOT_PROGRESS (15); /* * RTEMS Parameters: * r3: ptr to board info data */ (*entry_point ) ( gd->bd ); } #if (CONFIG_COMMANDS & CFG_CMD_ELF) static void do_bootm_vxworks (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], ulong addr, ulong *len_ptr, int verify) { image_header_t *hdr = &header; char str[80]; sprintf(str, "%x", ntohl(hdr->ih_ep)); /* write entry-point into string */ setenv("loadaddr", str); do_bootvx(cmdtp, 0, 0, NULL); } static void do_bootm_qnxelf (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], ulong addr, ulong *len_ptr, int verify) { image_header_t *hdr = &header; char *local_args[2]; char str[16]; sprintf(str, "%x", ntohl(hdr->ih_ep)); /* write entry-point into string */ local_args[0] = argv[0]; local_args[1] = str; /* and provide it via the arguments */ do_bootelf(cmdtp, 0, 2, local_args); } #endif /* CFG_CMD_ELF */ #ifdef CONFIG_LYNXKDI static void do_bootm_lynxkdi (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], ulong addr, ulong *len_ptr, int verify) { lynxkdi_boot( &header ); } #endif /* CONFIG_LYNXKDI */