示例#1
0
static int do_bootm_subcommand(cmd_tbl_t *cmdtp, int flag, int argc,
			char * const argv[])
{
	int ret = 0;
	long state;
	cmd_tbl_t *c;
	boot_os_fn *boot_fn;

	c = find_cmd_tbl(argv[1], &cmd_bootm_sub[0], ARRAY_SIZE(cmd_bootm_sub));

	if (c) {
		state = (long)c->cmd;

		/* treat start special since it resets the state machine */
		if (state == BOOTM_STATE_START) {
			argc--;
			argv++;
			return bootm_start(cmdtp, flag, argc, argv);
		}
	} else {
		/* Unrecognized command */
		return CMD_RET_USAGE;
	}

	if (images.state < BOOTM_STATE_START ||
	    images.state >= state) {
		printf("Trying to execute a command out of order\n");
		return CMD_RET_USAGE;
	}

	images.state |= state;
	boot_fn = boot_os[images.os.os];

	switch (state) {
		ulong load_end;
		case BOOTM_STATE_START:
			/* should never occur */
			break;
		case BOOTM_STATE_LOADOS:
			ret = bootm_load_os(images.os, &load_end, 0);
			if (ret)
				return ret;

			lmb_reserve(&images.lmb, images.os.load,
					(load_end - images.os.load));
			break;
#ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
		case BOOTM_STATE_RAMDISK:
		{
			ulong rd_len = images.rd_end - images.rd_start;

			ret = boot_ramdisk_high(&images.lmb, images.rd_start,
				rd_len, &images.initrd_start, &images.initrd_end);
			if (ret)
				return ret;

			setenv_hex("initrd_start", images.initrd_start);
			setenv_hex("initrd_end", images.initrd_end);
		}
			break;
#endif
#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_LMB)
		case BOOTM_STATE_FDT:
		{
			boot_fdt_add_mem_rsv_regions(&images.lmb,
						     images.ft_addr);
			ret = boot_relocate_fdt(&images.lmb,
				&images.ft_addr, &images.ft_len);
			break;
		}
#endif
		case BOOTM_STATE_OS_CMDLINE:
			ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, &images);
			if (ret)
				printf("cmdline subcommand not supported\n");
			break;
		case BOOTM_STATE_OS_BD_T:
			ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, &images);
			if (ret)
				printf("bdt subcommand not supported\n");
			break;
		case BOOTM_STATE_OS_PREP:
			ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, &images);
			if (ret)
				printf("prep subcommand not supported\n");
			break;
		case BOOTM_STATE_OS_GO:
			disable_interrupts();
#ifdef CONFIG_NETCONSOLE
			/*
			 * Stop the ethernet stack if NetConsole could have
			 * left it up
			 */
			eth_halt();
#endif
			arch_preboot_os();
			boot_fn(BOOTM_STATE_OS_GO, argc, argv, &images);
			break;
	}

	return ret;
}
示例#2
0
int do_bootm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	ulong		iflag;
	ulong		load_end = 0;
	int		ret;
	boot_os_fn	*boot_fn;

	/* relocate boot function table */
	if (!relocated) {
		int i;
		for (i = 0; i < ARRAY_SIZE(boot_os); i++)
			if (boot_os[i] != NULL)
				boot_os[i] += gd->reloc_off;
		relocated = 1;
	}

	/* determine if we have a sub command */
	if (argc > 1) {
		char *endp;

		simple_strtoul(argv[1], &endp, 16);
		/* endp pointing to NULL means that argv[1] 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);
	}

#ifdef CONFIG_SECURE_BOOT
	extern uint32_t authenticate_image(
			uint32_t ddr_start, uint32_t image_size);
	if (authenticate_image(load_addr,
			image_get_image_size((image_header_t *)load_addr)) == 0) {
		printf("Authenticate UImage Fail, Please check\n");
		return 1;
	}

#endif

	if (bootm_start(cmdtp, flag, argc, argv))
		return 1;

	/*
	 * 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();

#if defined(CONFIG_CMD_USB)
	/*
	 * turn off USB to prevent the host controller from writing to the
	 * SDRAM while Linux is booting. This could happen (at least for OHCI
	 * controller), because the HCCA (Host Controller Communication Area)
	 * lies within the SDRAM and the host controller writes continously to
	 * this area (as busmaster!). The HccaFrameNumber is for example
	 * updated every 1 ms within the HCCA structure in SDRAM! For more
	 * details see the OpenHCI specification.
	 */
	usb_stop();
#endif

#ifdef CONFIG_AMIGAONEG3SE
	/*
	 * We've possible left the caches enabled during
	 * bios emulation, so turn them off again
	 */
	icache_disable();
	dcache_disable();
#endif

	ret = bootm_load_os(images.os, &load_end, 1);

	if (ret < 0) {
		if (ret == BOOTM_ERR_RESET)
			do_reset (cmdtp, flag, argc, argv);
		if (ret == BOOTM_ERR_OVERLAP) {
			if (images.legacy_hdr_valid) {
				if (image_get_type (&images.legacy_hdr_os_copy) == IH_TYPE_MULTI)
					puts ("WARNING: legacy format multi component "
						"image overwritten\n");
			} else {
				puts ("ERROR: new format image overwritten - "
					"must RESET the board to recover\n");
				show_boot_progress (-113);
				do_reset (cmdtp, flag, argc, argv);
			}
		}
		if (ret == BOOTM_ERR_UNIMPLEMENTED) {
			if (iflag)
				enable_interrupts();
			show_boot_progress (-7);
			return 1;
		}
	}

	lmb_reserve(&images.lmb, images.os.load, (load_end - images.os.load));

	if (images.os.type == IH_TYPE_STANDALONE) {
		if (iflag)
			enable_interrupts();
		/* This may return when 'autostart' is 'no' */
		bootm_start_standalone(iflag, argc, argv);
		return 0;
	}

	show_boot_progress (8);

#ifdef CONFIG_SILENT_CONSOLE
	if (images.os.os == IH_OS_LINUX)
		fixup_silent_linux();
#endif

	boot_fn = boot_os[images.os.os];

	if (boot_fn == NULL) {
		if (iflag)
			enable_interrupts();
		printf ("ERROR: booting os '%s' (%d) is not supported\n",
			genimg_get_os_name(images.os.os), images.os.os);
		show_boot_progress (-8);
		return 1;
	}

	boot_fn(0, argc, argv, &images);

	show_boot_progress (-9);
#ifdef DEBUG
	puts ("\n## Control returned to monitor - resetting...\n");
#endif
	do_reset (cmdtp, flag, argc, argv);

	return 1;
}
示例#3
0
int do_bootm_subcommand (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	int ret = 0;
	int state;
	cmd_tbl_t *c;
	boot_os_fn *boot_fn;

	c = find_cmd_tbl(argv[1], &cmd_bootm_sub[0], ARRAY_SIZE(cmd_bootm_sub));

	if (c) {
		state = (int)c->cmd;

		/* treat start special since it resets the state machine */
		if (state == BOOTM_STATE_START) {
			argc--;
			argv++;
			return bootm_start(cmdtp, flag, argc, argv);
		}
	}
	/* Unrecognized command */
	else {
		cmd_usage(cmdtp);
		return 1;
	}

	if (images.state >= state) {
		printf ("Trying to execute a command out of order\n");
		cmd_usage(cmdtp);
		return 1;
	}

	images.state |= state;
	boot_fn = boot_os[images.os.os];

	switch (state) {
		ulong load_end;
		case BOOTM_STATE_START:
			/* should never occur */
			break;
		case BOOTM_STATE_LOADOS:
			ret = bootm_load_os(images.os, &load_end, 0);
			if (ret)
				return ret;

			lmb_reserve(&images.lmb, images.os.load,
					(load_end - images.os.load));
			break;
#if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_SPARC)
		case BOOTM_STATE_RAMDISK:
		{
			ulong rd_len = images.rd_end - images.rd_start;
			char str[17];

			ret = boot_ramdisk_high(&images.lmb, images.rd_start,
				rd_len, &images.initrd_start, &images.initrd_end);
			if (ret)
				return ret;

			sprintf(str, "%lx", images.initrd_start);
			setenv("initrd_start", str);
			sprintf(str, "%lx", images.initrd_end);
			setenv("initrd_end", str);
		}
			break;
#endif
#ifdef CONFIG_OF_LIBFDT
		case BOOTM_STATE_FDT:
		{
			ulong bootmap_base = getenv_bootm_low();
			ret = boot_relocate_fdt(&images.lmb, bootmap_base,
				&images.ft_addr, &images.ft_len);
			break;
		}
#endif
		case BOOTM_STATE_OS_CMDLINE:
			ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, &images);
			if (ret)
				printf ("cmdline subcommand not supported\n");
			break;
		case BOOTM_STATE_OS_BD_T:
			ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, &images);
			if (ret)
				printf ("bdt subcommand not supported\n");
			break;
		case BOOTM_STATE_OS_PREP:
			ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, &images);
			if (ret)
				printf ("prep subcommand not supported\n");
			break;
		case BOOTM_STATE_OS_GO:
			disable_interrupts();
			boot_fn(BOOTM_STATE_OS_GO, argc, argv, &images);
			break;
	}

	return ret;
}
示例#4
0
int do_bootm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	ulong		iflag;
	ulong		load_end = 0;
	int		ret;
	boot_os_fn	*boot_fn;

#ifdef CONFIG_SECURE_BOOT
#ifndef CONFIG_SECURE_BL1_ONLY
	security_check();
#endif
#endif

#ifdef CONFIG_ZIMAGE_BOOT
#define LINUX_ZIMAGE_MAGIC	0x016f2818
	image_header_t	*hdr;
	ulong		addr;

	/* find out kernel image address */
	if (argc < 2) {
		addr = load_addr;
		debug ("*  kernel: default image load address = 0x%08lx\n",
				load_addr);
	} else {
		addr = simple_strtoul(argv[1], NULL, 16);
	}

	if (*(ulong *)(addr + 9*4) == LINUX_ZIMAGE_MAGIC) {
		u32 val;
		printf("Boot with zImage\n");

		//addr = virt_to_phys(addr);
		hdr = (image_header_t *)addr;
		hdr->ih_os = IH_OS_LINUX;
		hdr->ih_ep = ntohl(addr);
		
		memmove (&images.legacy_hdr_os_copy, hdr, sizeof(image_header_t));

		/* save pointer to image header */
		images.legacy_hdr_os = hdr;

		images.legacy_hdr_valid = 1;

		goto after_header_check;
	}
#endif

#ifndef CONFIG_RELOC_FIXUP_WORKS
	static int relocated = 0;

	/* relocate boot function table */
	if (!relocated) {
		int i;
		for (i = 0; i < ARRAY_SIZE(boot_os); i++)
			if (boot_os[i] != NULL)
				boot_os[i] += gd->reloc_off;
		relocated = 1;
	}
#endif

	/* determine if we have a sub command */
	if (argc > 1) {
		char *endp;

		simple_strtoul(argv[1], &endp, 16);
		/* endp pointing to NULL means that argv[1] 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);
	}

	if (bootm_start(cmdtp, flag, argc, argv))
		return 1;

	/*
	 * 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();

#if defined(CONFIG_CMD_USB)
	/*
	 * turn off USB to prevent the host controller from writing to the
	 * SDRAM while Linux is booting. This could happen (at least for OHCI
	 * controller), because the HCCA (Host Controller Communication Area)
	 * lies within the SDRAM and the host controller writes continously to
	 * this area (as busmaster!). The HccaFrameNumber is for example
	 * updated every 1 ms within the HCCA structure in SDRAM! For more
	 * details see the OpenHCI specification.
	 */
	usb_stop();
#endif

#ifdef CONFIG_AMIGAONEG3SE
	/*
	 * We've possible left the caches enabled during
	 * bios emulation, so turn them off again
	 */
	icache_disable();
	dcache_disable();
#endif

	ret = bootm_load_os(images.os, &load_end, 1);

	if (ret < 0) {
		if (ret == BOOTM_ERR_RESET)
			do_reset (cmdtp, flag, argc, argv);
		if (ret == BOOTM_ERR_OVERLAP) {
			if (images.legacy_hdr_valid) {
				if (image_get_type (&images.legacy_hdr_os_copy) == IH_TYPE_MULTI)
					puts ("WARNING: legacy format multi component "
						"image overwritten\n");
			} else {
				puts ("ERROR: new format image overwritten - "
					"must RESET the board to recover\n");
				show_boot_progress (-113);
				do_reset (cmdtp, flag, argc, argv);
			}
		}
		if (ret == BOOTM_ERR_UNIMPLEMENTED) {
			if (iflag)
				enable_interrupts();
			show_boot_progress (-7);
			return 1;
		}
	}

	lmb_reserve(&images.lmb, images.os.load, (load_end - images.os.load));

	if (images.os.type == IH_TYPE_STANDALONE) {
		if (iflag)
			enable_interrupts();
		/* This may return when 'autostart' is 'no' */
		bootm_start_standalone(iflag, argc, argv);
		return 0;
	}

	show_boot_progress (8);

#if defined(CONFIG_ZIMAGE_BOOT)
after_header_check:
	images.os.os = hdr->ih_os;
	images.ep = image_get_ep (&images.legacy_hdr_os_copy);
#endif

#ifdef CONFIG_SILENT_CONSOLE
	if (images.os.os == IH_OS_LINUX)
		fixup_silent_linux();
#endif

	boot_fn = boot_os[images.os.os];

	if (boot_fn == NULL) {
		if (iflag)
			enable_interrupts();
		printf ("ERROR: booting os '%s' (%d) is not supported\n",
			genimg_get_os_name(images.os.os), images.os.os);
		show_boot_progress (-8);
		return 1;
	}

	arch_preboot_os();

	boot_fn(0, argc, argv, &images);

	show_boot_progress (-9);
#ifdef DEBUG
	puts ("\n## Control returned to monitor - resetting...\n");
#endif
	do_reset (cmdtp, flag, argc, argv);

	return 1;
}
示例#5
0
/**
 * Execute selected states of the bootm command.
 *
 * Note the arguments to this state must be the first argument, Any 'bootm'
 * or sub-command arguments must have already been taken.
 *
 * Note that if states contains more than one flag it MUST contain
 * BOOTM_STATE_START, since this handles and consumes the command line args.
 *
 * Also note that aside from boot_os_fn functions and bootm_load_os no other
 * functions we store the return value of in 'ret' may use a negative return
 * value, without special handling.
 *
 * @param cmdtp		Pointer to bootm command table entry
 * @param flag		Command flags (CMD_FLAG_...)
 * @param argc		Number of subcommand arguments (0 = no arguments)
 * @param argv		Arguments
 * @param states	Mask containing states to run (BOOTM_STATE_...)
 * @param images	Image header information
 * @param boot_progress 1 to show boot progress, 0 to not do this
 * @return 0 if ok, something else on error. Some errors will cause this
 *	function to perform a reboot! If states contains BOOTM_STATE_OS_GO
 *	then the intent is to boot an OS, so this function will not return
 *	unless the image type is standalone.
 */
static int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc,
		char * const argv[], int states, bootm_headers_t *images,
		int boot_progress)
{
	boot_os_fn *boot_fn;
	ulong iflag = 0;
	int ret = 0, need_boot_fn;

	images->state |= states;

	/*
	 * Work through the states and see how far we get. We stop on
	 * any error.
	 */
	if (states & BOOTM_STATE_START)
		ret = bootm_start(cmdtp, flag, argc, argv);

	if (!ret && (states & BOOTM_STATE_FINDOS))
		ret = bootm_find_os(cmdtp, flag, argc, argv);

	if (!ret && (states & BOOTM_STATE_FINDOTHER)) {
		ret = bootm_find_other(cmdtp, flag, argc, argv);
		argc = 0;	/* consume the args */
	}

	/* Load the OS */
	if (!ret && (states & BOOTM_STATE_LOADOS)) {
		ulong load_end;

		iflag = bootm_disable_interrupts();
		ret = bootm_load_os(images, &load_end, 0);
		if (ret == 0)
			lmb_reserve(&images->lmb, images->os.load,
				    (load_end - images->os.load));
		else if (ret && ret != BOOTM_ERR_OVERLAP)
			goto err;
		else if (ret == BOOTM_ERR_OVERLAP)
			ret = 0;
#if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
		if (images->os.os == IH_OS_LINUX)
			fixup_silent_linux();
#endif
	}

	/* Relocate the ramdisk */
#ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
	if (!ret && (states & BOOTM_STATE_RAMDISK)) {
		ulong rd_len = images->rd_end - images->rd_start;

		ret = boot_ramdisk_high(&images->lmb, images->rd_start,
			rd_len, &images->initrd_start, &images->initrd_end);
		if (!ret) {
			setenv_hex("initrd_start", images->initrd_start);
			setenv_hex("initrd_end", images->initrd_end);
		}
	}
#endif
#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_LMB)
	if (!ret && (states & BOOTM_STATE_FDT)) {
		boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
		ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
					&images->ft_len);
	}
#endif

	/* From now on, we need the OS boot function */
	if (ret)
		return ret;
	boot_fn = boot_os[images->os.os];
	need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE |
			BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP |
			BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO);
	if (boot_fn == NULL && need_boot_fn) {
		if (iflag)
			enable_interrupts();
		printf("ERROR: booting os '%s' (%d) is not supported\n",
		       genimg_get_os_name(images->os.os), images->os.os);
		bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
		return 1;
	}

	/* Call various other states that are not generally used */
	if (!ret && (states & BOOTM_STATE_OS_CMDLINE))
		ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images);
	if (!ret && (states & BOOTM_STATE_OS_BD_T))
		ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
	if (!ret && (states & BOOTM_STATE_OS_PREP))
		ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images);

#ifdef CONFIG_TRACE
	/* Pretend to run the OS, then run a user command */
	if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) {
		char *cmd_list = getenv("fakegocmd");

		ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO,
				images, boot_fn);
		if (!ret && cmd_list)
			ret = run_command_list(cmd_list, -1, flag);
	}
#endif

	/* Check for unsupported subcommand. */
	if (ret) {
		puts("subcommand not supported\n");
		return ret;
	}

	/* Now run the OS! We hope this doesn't return */
	if (!ret && (states & BOOTM_STATE_OS_GO))
		ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO,
				images, boot_fn);

	/* Deal with any fallout */
err:
	if (iflag)
		enable_interrupts();

	if (ret == BOOTM_ERR_UNIMPLEMENTED)
		bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
	else if (ret == BOOTM_ERR_RESET)
		do_reset(cmdtp, flag, argc, argv);

	return ret;
}
示例#6
0
int do_bootm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	ulong		iflag;
	ulong		load_end = 0;
	int		ret;
	boot_os_fn	*boot_fn;

	/* determine if we have a sub command */
	if (argc > 1) {
		char *endp;

		simple_strtoul(argv[1], &endp, 16);
		/* endp pointing to NULL means that argv[1] 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);
	}

	if (bootm_start(cmdtp, flag, argc, argv))
		return 1;

	/*
	 * 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_NETCONSOLE
	/* Stop the ethernet stack if NetConsole could have left it up */
	eth_halt();
#endif

#if defined(CONFIG_CMD_USB)
	/*
	 * turn off USB to prevent the host controller from writing to the
	 * SDRAM while Linux is booting. This could happen (at least for OHCI
	 * controller), because the HCCA (Host Controller Communication Area)
	 * lies within the SDRAM and the host controller writes continously to
	 * this area (as busmaster!). The HccaFrameNumber is for example
	 * updated every 1 ms within the HCCA structure in SDRAM! For more
	 * details see the OpenHCI specification.
	 */
	usb_stop();
#endif

	ret = bootm_load_os(images.os, &load_end, 1);

	if (ret < 0) {
		if (ret == BOOTM_ERR_RESET)
			do_reset(cmdtp, flag, argc, argv);
		if (ret == BOOTM_ERR_OVERLAP) {
			if (images.legacy_hdr_valid) {
				image_header_t *hdr;
				hdr = &images.legacy_hdr_os_copy;
				if (image_get_type(hdr) == IH_TYPE_MULTI)
					puts("WARNING: legacy format multi "
						"component image "
						"overwritten\n");
			} else {
				puts("ERROR: new format image overwritten - "
					"must RESET the board to recover\n");
				bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
				do_reset(cmdtp, flag, argc, argv);
			}
		}
		if (ret == BOOTM_ERR_UNIMPLEMENTED) {
			if (iflag)
				enable_interrupts();
			bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
			return 1;
		}
	}

	lmb_reserve(&images.lmb, images.os.load, (load_end - images.os.load));

	if (images.os.type == IH_TYPE_STANDALONE) {
		if (iflag)
			enable_interrupts();
		/* This may return when 'autostart' is 'no' */
		bootm_start_standalone(iflag, argc, argv);
		return 0;
	}

	bootstage_mark(BOOTSTAGE_ID_CHECK_BOOT_OS);

	boot_fn = boot_os[images.os.os];

	if (boot_fn == NULL) {
		if (iflag)
			enable_interrupts();
		printf("ERROR: booting os '%s' (%d) is not supported\n",
			genimg_get_os_name(images.os.os), images.os.os);
		bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
		return 1;
	}

	arch_preboot_os();

	boot_fn(0, argc, argv, &images);

	bootstage_error(BOOTSTAGE_ID_BOOT_OS_RETURNED);
#ifdef DEBUG
	puts("\n## Control returned to monitor - resetting...\n");
#endif
	do_reset(cmdtp, flag, argc, argv);

	return 1;
}