cmd_bootm.c

U_BOOT_CMD(
	bootm,	CONFIG_SYS_MAXARGS,	1,	do_bootm,
	"boot application image from memory",
	"[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 extened 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"
	"\tloados  - load OS image\n"
#if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_SPARC)
	"\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_t processing\n"
	"\tprep    - OS specific prep before relocation or go\n"
	"\tgo      - start OS"
);

/*******************************************************************/
/* bootd - boot default image */
/*******************************************************************/
#if defined(CONFIG_CMD_BOOTD)
int do_bootd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	int rcode = 0;

#ifndef CONFIG_SYS_HUSH_PARSER
	if (builtin_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 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)
int do_iminfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	int	arg;
	ulong	addr;
	int	rcode = 0;

	if (argc < 2) {
		return image_info(load_addr);
	}

	for (arg = 1; arg < argc; ++arg) {
		addr = simple_strtoul(argv[arg], NULL, 16);
		if (image_info(addr) != 0)
			rcode = 1;
	}
	return rcode;
}

static int image_info(ulong addr)
{
	void *hdr = (void *)addr;

	printf("\n## Checking Image at %08lx ...\n", addr);

	switch (genimg_get_format(hdr)) {
	case IMAGE_FORMAT_LEGACY:
		puts("   Legacy image found\n");
		if (!image_check_magic(hdr)) {
			puts("   Bad Magic Number\n");
			return 1;
		}

		if (!image_check_hcrc(hdr)) {
			puts("   Bad Header Checksum\n");
			return 1;
		}

		image_print_contents(hdr);

		puts("   Verifying Checksum ... ");
		if (!image_check_dcrc(hdr)) {
			puts("   Bad Data CRC\n");
			return 1;
		}
		puts("OK\n");
		return 0;
#if defined(CONFIG_FIT)
	case IMAGE_FORMAT_FIT:
		puts("   FIT image found\n");

		if (!fit_check_format(hdr)) {
			puts("Bad FIT image format!\n");
			return 1;
		}

		fit_print_contents(hdr);

		if (!fit_all_image_check_hashes(hdr)) {
			puts("Bad hash in FIT image!\n");
			return 1;
		}

		return 0;
#endif
	default:
		puts("Unknown image format!\n");
		break;
	}

	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)
int do_imls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	flash_info_t *info;
	int i, j;
	void *hdr;

	for (i = 0, info = &flash_info[0];
		i < CONFIG_SYS_MAX_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)) {
			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;
#if defined(CONFIG_FIT)
			case IMAGE_FORMAT_FIT:
				if (!fit_check_format(hdr))
					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);
}

U_BOOT_CMD(
	imls,	1,		1,	do_imls,
	"list all images found in flash",
	"\n"
	"    - Prints information about all images found at sector\n"
	"      boundaries in flash."
);
#endif

/*******************************************************************/
/* helper routines */
/*******************************************************************/
#ifdef CONFIG_SILENT_CONSOLE
static void fixup_silent_linux(void)
{
	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) {
		start = strstr(cmdline, "console=");
		if (start) {
			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 */


/*******************************************************************/
/* OS booting routines */
/*******************************************************************/

#ifdef CONFIG_BOOTM_NETBSD
static int do_bootm_netbsd(int flag, int argc, char * const argv[],
			    bootm_headers_t *images)
{
	void (*loader)(bd_t *, image_header_t *, char *, char *);
	image_header_t *os_hdr, *hdr;
	ulong kernel_data, kernel_len;
	char *consdev;
	char *cmdline;

	if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
		return 1;

#if defined(CONFIG_FIT)
	if (!images->legacy_hdr_valid) {
		fit_unsupported_reset("NetBSD");
		return 1;
	}
#endif
	hdr = images->legacy_hdr_os;

	/*
	 * 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.
	 */
	os_hdr = NULL;
	if (image_check_type(&images->legacy_hdr_os_copy, IH_TYPE_MULTI)) {
		image_multi_getimg(hdr, 1, &kernel_data, &kernel_len);
		if (kernel_len)
			os_hdr = hdr;
	}

	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 < argc; i += 1)
			len += strlen(argv[i]) + 1;
		cmdline = malloc(len);

		for (i = 2, len = 0; i < argc; i += 1) {
			if (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 *))images->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, os_hdr, consdev, cmdline);

	return 1;
}
#endif /* CONFIG_BOOTM_NETBSD*/

#ifdef CONFIG_LYNXKDI
static int do_bootm_lynxkdi(int flag, int argc, char * const argv[],
			     bootm_headers_t *images)
{
	image_header_t *hdr = &images->legacy_hdr_os_copy;

	if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
		return 1;

#if defined(CONFIG_FIT)
	if (!images->legacy_hdr_valid) {
		fit_unsupported_reset("Lynx");
		return 1;
	}
#endif

	lynxkdi_boot((image_header_t *)hdr);

	return 1;
}
#endif /* CONFIG_LYNXKDI */

#ifdef CONFIG_BOOTM_RTEMS
static int do_bootm_rtems(int flag, int argc, char * const argv[],
			   bootm_headers_t *images)
{
	void (*entry_point)(bd_t *);

	if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
		return 1;

#if defined(CONFIG_FIT)
	if (!images->legacy_hdr_valid) {
		fit_unsupported_reset("RTEMS");
		return 1;
	}
#endif

	entry_point = (void (*)(bd_t *))images->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);

	return 1;
}
#endif /* CONFIG_BOOTM_RTEMS */

#if defined(CONFIG_BOOTM_OSE)
static int do_bootm_ose(int flag, int argc, char * const argv[],
			   bootm_headers_t *images)
{
	void (*entry_point)(void);

	if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
		return 1;

#if defined(CONFIG_FIT)
	if (!images->legacy_hdr_valid) {
		fit_unsupported_reset("OSE");
		return 1;
	}
#endif

	entry_point = (void (*)(void))images->ep;

	printf("## Transferring control to OSE (at address %08lx) ...\n",
		(ulong)entry_point);

	show_boot_progress(15);

	/*
	 * OSE Parameters:
	 *   None
	 */
	(*entry_point)();

	return 1;
}
#endif /* CONFIG_BOOTM_OSE */

#if defined(CONFIG_CMD_ELF)
static int do_bootm_vxworks(int flag, int argc, char * const argv[],
			     bootm_headers_t *images)
{
	char str[80];

	if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
		return 1;

#if defined(CONFIG_FIT)
	if (!images->legacy_hdr_valid) {
		fit_unsupported_reset("VxWorks");
		return 1;
	}
#endif

	sprintf(str, "%lx", images->ep); /* write entry-point into string */
	setenv("loadaddr", str);
	do_bootvx(NULL, 0, 0, NULL);

	return 1;
}

static int do_bootm_qnxelf(int flag, int argc, char * const argv[],
			    bootm_headers_t *images)
{
	char *local_args[2];
	char str[16];

	if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
		return 1;

#if defined(CONFIG_FIT)
	if (!images->legacy_hdr_valid) {
		fit_unsupported_reset("QNX");
		return 1;
	}
#endif

	sprintf(str, "%lx", images->ep); /* write entry-point into string */
	local_args[0] = argv[0];
	local_args[1] = str;	/* and provide it via the arguments */
	do_bootelf(NULL, 0, 2, local_args);

	return 1;
}
#endif

#ifdef CONFIG_INTEGRITY
static int do_bootm_integrity(int flag, int argc, char * const argv[],
			   bootm_headers_t *images)
{
	void (*entry_point)(void);

	if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
		return 1;

#if defined(CONFIG_FIT)
	if (!images->legacy_hdr_valid) {
		fit_unsupported_reset("INTEGRITY");
		return 1;
	}
#endif

	entry_point = (void (*)(void))images->ep;

	printf("## Transferring control to INTEGRITY (at address %08lx) ...\n",
		(ulong)entry_point);

	show_boot_progress(15);

	/*
	 * INTEGRITY Parameters:
	 *   None
	 */
	(*entry_point)();

	return 1;
}
#endif