U-Boot. Исходные тексты команд: bootm.c // SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2000-2009
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*/
/*
* Boot support
*/
#include <common.h>
#include <bootm.h>
#include <command.h>
#include <env.h>
#include <errno.h>
#include <image.h>
#include <malloc.h>
#include <nand.h>
#include <asm/byteorder.h>
#include <asm/global_data.h>
#include <linux/ctype.h>
#include <linux/err.h>
#include <u-boot/zlib.h>
#include <mapmem.h>
DECLARE_GLOBAL_DATA_PTR;
#if defined(CONFIG_CMD_IMI)
static int image_info(unsigned long addr);
#endif
#if defined(CONFIG_CMD_IMLS)
#include <flash.h>
#include <mtd/cfi_flash.h>
#endif
#if defined(CONFIG_CMD_IMLS) || defined(CONFIG_CMD_IMLS_NAND)
static int do_imls(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[]);
#endif
/* we overload the cmd field with our state machine info instead of a
* function pointer */
static struct cmd_tbl cmd_bootm_sub[] = {
U_BOOT_CMD_MKENT(start, 0, 1, (void *)BOOTM_STATE_START, "", ""),
U_BOOT_CMD_MKENT(loados, 0, 1, (void *)BOOTM_STATE_LOADOS, "", ""),
#ifdef CONFIG_CMD_BOOTM_PRE_LOAD
U_BOOT_CMD_MKENT(preload, 0, 1, (void *)BOOTM_STATE_PRE_LOAD, "", ""),
#endif
#ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
U_BOOT_CMD_MKENT(ramdisk, 0, 1, (void *)BOOTM_STATE_RAMDISK, "", ""),
#endif
#ifdef CONFIG_OF_LIBFDT
U_BOOT_CMD_MKENT(fdt, 0, 1, (void *)BOOTM_STATE_FDT, "", ""),
#endif
U_BOOT_CMD_MKENT(cmdline, 0, 1, (void *)BOOTM_STATE_OS_CMDLINE, "", ""),
U_BOOT_CMD_MKENT(bdt, 0, 1, (void *)BOOTM_STATE_OS_BD_T, "", ""),
U_BOOT_CMD_MKENT(prep, 0, 1, (void *)BOOTM_STATE_OS_PREP, "", ""),
U_BOOT_CMD_MKENT(fake, 0, 1, (void *)BOOTM_STATE_OS_FAKE_GO, "", ""),
U_BOOT_CMD_MKENT(go, 0, 1, (void *)BOOTM_STATE_OS_GO, "", ""),
};
#if defined(CONFIG_CMD_BOOTM_PRE_LOAD)
static ulong bootm_get_addr(int argc, char *const argv[])
{
ulong addr;
if (argc > 0)
addr = hextoul(argv[0], NULL);
else
addr = image_load_addr;
return addr;
}
#endif
static int do_bootm_subcommand(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
int ret = 0;
long state;
struct cmd_tbl *c;
c = find_cmd_tbl(argv[0], &cmd_bootm_sub[0], ARRAY_SIZE(cmd_bootm_sub));
argc--; argv++;
if (c) {
state = (long)c->cmd;
if (state == BOOTM_STATE_START)
state |= BOOTM_STATE_PRE_LOAD | BOOTM_STATE_FINDOS |
BOOTM_STATE_FINDOTHER;
#if defined(CONFIG_CMD_BOOTM_PRE_LOAD)
if (state == BOOTM_STATE_PRE_LOAD)
state |= BOOTM_STATE_START;
#endif
} else {
/* Unrecognized command */
return CMD_RET_USAGE;
}
if (((state & BOOTM_STATE_START) != BOOTM_STATE_START) &&
images.state >= state) {
printf("Trying to execute a command out of order\n");
return CMD_RET_USAGE;
}
ret = do_bootm_states(cmdtp, flag, argc, argv, state, &images, 0);
#if defined(CONFIG_CMD_BOOTM_PRE_LOAD)
if (!ret && (state & BOOTM_STATE_PRE_LOAD))
env_set_hex("loadaddr_verified",
bootm_get_addr(argc, argv) + image_load_offset);
#endif
return ret ? CMD_RET_FAILURE : 0;
}
/*******************************************************************/
/* bootm - boot application image from image in memory */
/*******************************************************************/
int do_bootm(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
int states;
int ret;
/* determine if we have a sub command */
argc--; argv++;
if (argc > 0) {
char *endp;
hextoul(argv[0], &endp);
/* endp pointing to NULL means that argv[0] was just a
* valid number, pass it along to the normal bootm processing
*
* If endp is ':' or '#' assume a FIT identifier so pass
* along for normal processing.
*
* Right now we assume the first arg should never be '-'
*/
if ((*endp != 0) && (*endp != ':') && (*endp != '#'))
return do_bootm_subcommand(cmdtp, flag, argc, argv);
}
states = BOOTM_STATE_START | BOOTM_STATE_FINDOS | BOOTM_STATE_PRE_LOAD |
BOOTM_STATE_FINDOTHER | BOOTM_STATE_LOADOS |
BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
BOOTM_STATE_OS_GO;
if (IS_ENABLED(CONFIG_SYS_BOOT_RAMDISK_HIGH))
states |= BOOTM_STATE_RAMDISK;
if (IS_ENABLED(CONFIG_MEASURED_BOOT))
states |= BOOTM_STATE_MEASURE;
if (IS_ENABLED(CONFIG_PPC) || IS_ENABLED(CONFIG_MIPS))
states |= BOOTM_STATE_OS_CMDLINE;
ret = do_bootm_states(cmdtp, flag, argc, argv, states, &images, 1);
return ret ? CMD_RET_FAILURE : 0;
}
int bootm_maybe_autostart(struct cmd_tbl *cmdtp, const char *cmd)
{
if (env_get_autostart()) {
char *local_args[2];
local_args[0] = (char *)cmd;
local_args[1] = NULL;
printf("Automatic boot of image at addr 0x%08lX ...\n",
image_load_addr);
return do_bootm(cmdtp, 0, 1, local_args);
}
return 0;
}
U_BOOT_LONGHELP(bootm,
"[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_LIBFDT)
"\tWhen booting a Linux kernel which requires a flat device-tree\n"
"\ta third argument is required which is the address 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
#if defined(CONFIG_FIT)
"\t\nFor the new multi component uImage format (FIT) addresses\n"
"\tmust be extended to include component or configuration unit name:\n"
"\taddr:<subimg_uname> - direct component image specification\n"
"\taddr#<conf_uname> - configuration specification\n"
"\tUse iminfo command to get the list of existing component\n"
"\timages and configurations.\n"
#endif
"\nSub-commands to do part of the bootm sequence. The sub-commands "
"must be\n"
"issued in the order below (it's ok to not issue all sub-commands):\n"
"\tstart [addr [arg ...]]\n"
#if defined(CONFIG_CMD_BOOTM_PRE_LOAD)
"\tpreload [addr [arg ..]] - run only the preload stage\n"
#endif
"\tloados - load OS image\n"
#if defined(CONFIG_SYS_BOOT_RAMDISK_HIGH)
"\tramdisk - relocate initrd, set env initrd_start/initrd_end\n"
#endif
#if defined(CONFIG_OF_LIBFDT)
"\tfdt - relocate flat device tree\n"
#endif
"\tcmdline - OS specific command line processing/setup\n"
"\tbdt - OS specific bd_info processing\n"
"\tprep - OS specific prep before relocation or go\n"
#if defined(CONFIG_TRACE)
"\tfake - OS specific fake start without go\n"
#endif
"\tgo - start OS");
U_BOOT_CMD(
bootm, CONFIG_SYS_MAXARGS, 1, do_bootm,
"boot application image from memory", bootm_help_text
);
/*******************************************************************/
/* bootd - boot default image */
/*******************************************************************/
#if defined(CONFIG_CMD_BOOTD)
int do_bootd(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
return run_command(env_get("bootcmd"), flag);
}
U_BOOT_CMD(
boot, 1, 1, do_bootd,
"boot default, i.e., run 'bootcmd'",
""
);
/* keep old command name "bootd" for backward compatibility */
U_BOOT_CMD(
bootd, 1, 1, do_bootd,
"boot default, i.e., run 'bootcmd'",
""
);
#endif
/*******************************************************************/
/* iminfo - print header info for a requested image */
/*******************************************************************/
#if defined(CONFIG_CMD_IMI)
static int do_iminfo(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
int arg;
ulong addr;
int rcode = 0;
if (argc < 2) {
return image_info(image_load_addr);
}
for (arg = 1; arg < argc; ++arg) {
addr = hextoul(argv[arg], NULL);
if (image_info(addr) != 0)
rcode = 1;
}
return rcode;
}
static int image_info(ulong addr)
{
void *hdr = (void *)map_sysmem(addr, 0);
printf("\n## Checking Image at %08lx ...\n", addr);
switch (genimg_get_format(hdr)) {
#if defined(CONFIG_LEGACY_IMAGE_FORMAT)
case IMAGE_FORMAT_LEGACY:
puts(" Legacy image found\n");
if (!image_check_magic(hdr)) {
puts(" Bad Magic Number\n");
unmap_sysmem(hdr);
return 1;
}
if (!image_check_hcrc(hdr)) {
puts(" Bad Header Checksum\n");
unmap_sysmem(hdr);
return 1;
}
image_print_contents(hdr);
puts(" Verifying Checksum ... ");
if (!image_check_dcrc(hdr)) {
puts(" Bad Data CRC\n");
unmap_sysmem(hdr);
return 1;
}
puts("OK\n");
unmap_sysmem(hdr);
return 0;
#endif
#if defined(CONFIG_ANDROID_BOOT_IMAGE)
case IMAGE_FORMAT_ANDROID:
puts(" Android image found\n");
android_print_contents(hdr);
unmap_sysmem(hdr);
return 0;
#endif
#if defined(CONFIG_FIT)
case IMAGE_FORMAT_FIT:
puts(" FIT image found\n");
if (fit_check_format(hdr, IMAGE_SIZE_INVAL)) {
puts("Bad FIT image format!\n");
unmap_sysmem(hdr);
return 1;
}
fit_print_contents(hdr);
if (!fit_all_image_verify(hdr)) {
puts("Bad hash in FIT image!\n");
unmap_sysmem(hdr);
return 1;
}
unmap_sysmem(hdr);
return 0;
#endif
default:
puts("Unknown image format!\n");
break;
}
unmap_sysmem(hdr);
return 1;
}
U_BOOT_CMD(
iminfo, CONFIG_SYS_MAXARGS, 1, do_iminfo,
"print header information for application image",
"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)"
);
#endif
/*******************************************************************/
/* imls - list all images found in flash */
/*******************************************************************/
#if defined(CONFIG_CMD_IMLS)
static int do_imls_nor(void)
{
flash_info_t *info;
int i, j;
void *hdr;
for (i = 0, info = &flash_info[0];
i < CFI_FLASH_BANKS; ++i, ++info) {
if (info->flash_id == FLASH_UNKNOWN)
goto next_bank;
for (j = 0; j < info->sector_count; ++j) {
hdr = (void *)info->start[j];
if (!hdr)
goto next_sector;
switch (genimg_get_format(hdr)) {
#if defined(CONFIG_LEGACY_IMAGE_FORMAT)
case IMAGE_FORMAT_LEGACY:
if (!image_check_hcrc(hdr))
goto next_sector;
printf("Legacy Image at %08lX:\n", (ulong)hdr);
image_print_contents(hdr);
puts(" Verifying Checksum ... ");
if (!image_check_dcrc(hdr)) {
puts("Bad Data CRC\n");
} else {
puts("OK\n");
}
break;
#endif
#if defined(CONFIG_FIT)
case IMAGE_FORMAT_FIT:
if (fit_check_format(hdr, IMAGE_SIZE_INVAL))
goto next_sector;
printf("FIT Image at %08lX:\n", (ulong)hdr);
fit_print_contents(hdr);
break;
#endif
default:
goto next_sector;
}
next_sector: ;
}
next_bank: ;
}
return 0;
}
#endif
#if defined(CONFIG_CMD_IMLS_NAND)
static int nand_imls_legacyimage(struct mtd_info *mtd, int nand_dev,
loff_t off, size_t len)
{
void *imgdata;
int ret;
imgdata = malloc(len);
if (!imgdata) {
printf("May be a Legacy Image at NAND device %d offset %08llX:\n",
nand_dev, off);
printf(" Low memory(cannot allocate memory for image)\n");
return -ENOMEM;
}
ret = nand_read_skip_bad(mtd, off, &len, NULL, mtd->size, imgdata);
if (ret < 0 && ret != -EUCLEAN) {
free(imgdata);
return ret;
}
if (!image_check_hcrc(imgdata)) {
free(imgdata);
return 0;
}
printf("Legacy Image at NAND device %d offset %08llX:\n",
nand_dev, off);
image_print_contents(imgdata);
puts(" Verifying Checksum ... ");
if (!image_check_dcrc(imgdata))
puts("Bad Data CRC\n");
else
puts("OK\n");
free(imgdata);
return 0;
}
static int nand_imls_fitimage(struct mtd_info *mtd, int nand_dev, loff_t off,
size_t len)
{
void *imgdata;
int ret;
imgdata = malloc(len);
if (!imgdata) {
printf("May be a FIT Image at NAND device %d offset %08llX:\n",
nand_dev, off);
printf(" Low memory(cannot allocate memory for image)\n");
return -ENOMEM;
}
ret = nand_read_skip_bad(mtd, off, &len, NULL, mtd->size, imgdata);
if (ret < 0 && ret != -EUCLEAN) {
free(imgdata);
return ret;
}
if (fit_check_format(imgdata, IMAGE_SIZE_INVAL)) {
free(imgdata);
return 0;
}
printf("FIT Image at NAND device %d offset %08llX:\n", nand_dev, off);
fit_print_contents(imgdata);
free(imgdata);
return 0;
}
static int do_imls_nand(void)
{
struct mtd_info *mtd;
int nand_dev = nand_curr_device;
size_t len;
loff_t off;
u32 buffer[16];
if (nand_dev < 0 || nand_dev >= CONFIG_SYS_MAX_NAND_DEVICE) {
puts("\nNo NAND devices available\n");
return -ENODEV;
}
printf("\n");
for (nand_dev = 0; nand_dev < CONFIG_SYS_MAX_NAND_DEVICE; nand_dev++) {
mtd = get_nand_dev_by_index(nand_dev);
if (!mtd->name || !mtd->size)
continue;
for (off = 0; off < mtd->size; off += mtd->erasesize) {
const struct legacy_img_hdr *header;
int ret;
if (nand_block_isbad(mtd, off))
continue;
len = sizeof(buffer);
ret = nand_read(mtd, off, &len, (u8 *)buffer);
if (ret < 0 && ret != -EUCLEAN) {
printf("NAND read error %d at offset %08llX\n",
ret, off);
continue;
}
switch (genimg_get_format(buffer)) {
#if defined(CONFIG_LEGACY_IMAGE_FORMAT)
case IMAGE_FORMAT_LEGACY:
header = (const struct legacy_img_hdr *)buffer;
len = image_get_image_size(header);
nand_imls_legacyimage(mtd, nand_dev, off, len);
break;
#endif
#if defined(CONFIG_FIT)
case IMAGE_FORMAT_FIT:
len = fit_get_size(buffer);
nand_imls_fitimage(mtd, nand_dev, off, len);
break;
#endif
}
}
}
return 0;
}
#endif
#if defined(CONFIG_CMD_IMLS) || defined(CONFIG_CMD_IMLS_NAND)
static int do_imls(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
int ret_nor = 0, ret_nand = 0;
#if defined(CONFIG_CMD_IMLS)
ret_nor = do_imls_nor();
#endif
#if defined(CONFIG_CMD_IMLS_NAND)
ret_nand = do_imls_nand();
#endif
if (ret_nor)
return ret_nor;
if (ret_nand)
return ret_nand;
return (0);
}
U_BOOT_CMD(
imls, 1, 1, do_imls,
"list all images found in flash",
"\n"
" - Prints information about all images found at sector/block\n"
" boundaries in nor/nand flash."
);
#endif
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