[u-boot.git] / cmd / bootefi.c

/*
 *  EFI application loader
 *
 *  Copyright (c) 2016 Alexander Graf
 *
 *  SPDX-License-Identifier:     GPL-2.0+
 */

#include <charset.h>
#include <common.h>
#include <command.h>
#include <dm.h>
#include <efi_loader.h>
#include <efi_selftest.h>
#include <errno.h>
#include <linux/libfdt.h>
#include <linux/libfdt_env.h>
#include <memalign.h>
#include <asm/global_data.h>
#include <asm-generic/sections.h>
#include <linux/linkage.h>

DECLARE_GLOBAL_DATA_PTR;

static uint8_t efi_obj_list_initalized;

static struct efi_device_path *bootefi_image_path;
static struct efi_device_path *bootefi_device_path;

/* Initialize and populate EFI object list */
static void efi_init_obj_list(void)
{
	efi_obj_list_initalized = 1;

	/* Initialize EFI driver uclass */
	efi_driver_init();

	efi_console_register();
#ifdef CONFIG_PARTITIONS
	efi_disk_register();
#endif
#if defined(CONFIG_LCD) || defined(CONFIG_DM_VIDEO)
	efi_gop_register();
#endif
#ifdef CONFIG_CMD_NET
	efi_net_register();
#endif
#ifdef CONFIG_GENERATE_SMBIOS_TABLE
	efi_smbios_register();
#endif
	efi_watchdog_register();

	/* Initialize EFI runtime services */
	efi_reset_system_init();
	efi_get_time_init();
}

/*
 * Set the load options of an image from an environment variable.
 *
 * @loaded_image_info:	the image
 * @env_var:		name of the environment variable
 */
static void set_load_options(struct efi_loaded_image *loaded_image_info,
			     const char *env_var)
{
	size_t size;
	const char *env = env_get(env_var);

	loaded_image_info->load_options = NULL;
	loaded_image_info->load_options_size = 0;
	if (!env)
		return;
	size = strlen(env) + 1;
	loaded_image_info->load_options = calloc(size, sizeof(u16));
	if (!loaded_image_info->load_options) {
		printf("ERROR: Out of memory\n");
		return;
	}
	utf8_to_utf16(loaded_image_info->load_options, (u8 *)env, size);
	loaded_image_info->load_options_size = size * 2;
}

static void *copy_fdt(void *fdt)
{
	u64 fdt_size = fdt_totalsize(fdt);
	unsigned long fdt_ram_start = -1L, fdt_pages;
	u64 new_fdt_addr;
	void *new_fdt;
	int i;

        for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
                u64 ram_start = gd->bd->bi_dram[i].start;
                u64 ram_size = gd->bd->bi_dram[i].size;

		if (!ram_size)
			continue;

		if (ram_start < fdt_ram_start)
			fdt_ram_start = ram_start;
	}

	/* Give us at least 4kb breathing room */
	fdt_size = ALIGN(fdt_size + 4096, EFI_PAGE_SIZE);
	fdt_pages = fdt_size >> EFI_PAGE_SHIFT;

	/* Safe fdt location is at 128MB */
	new_fdt_addr = fdt_ram_start + (128 * 1024 * 1024) + fdt_size;
	if (efi_allocate_pages(1, EFI_RUNTIME_SERVICES_DATA, fdt_pages,
			       &new_fdt_addr) != EFI_SUCCESS) {
		/* If we can't put it there, put it somewhere */
		new_fdt_addr = (ulong)memalign(EFI_PAGE_SIZE, fdt_size);
		if (efi_allocate_pages(1, EFI_RUNTIME_SERVICES_DATA, fdt_pages,
				       &new_fdt_addr) != EFI_SUCCESS) {
			printf("ERROR: Failed to reserve space for FDT\n");
			return NULL;
		}
	}

	new_fdt = (void*)(ulong)new_fdt_addr;
	memcpy(new_fdt, fdt, fdt_totalsize(fdt));
	fdt_set_totalsize(new_fdt, fdt_size);

	return new_fdt;
}

static efi_status_t efi_do_enter(
			efi_handle_t image_handle, struct efi_system_table *st,
			EFIAPI efi_status_t (*entry)(
				efi_handle_t image_handle,
				struct efi_system_table *st))
{
	efi_status_t ret = EFI_LOAD_ERROR;

	if (entry)
		ret = entry(image_handle, st);
	st->boottime->exit(image_handle, ret, 0, NULL);
	return ret;
}

#ifdef CONFIG_ARM64
static efi_status_t efi_run_in_el2(EFIAPI efi_status_t (*entry)(
			efi_handle_t image_handle, struct efi_system_table *st),
			efi_handle_t image_handle, struct efi_system_table *st)
{
	/* Enable caches again */
	dcache_enable();

	return efi_do_enter(image_handle, st, entry);
}
#endif

/*
 * Load an EFI payload into a newly allocated piece of memory, register all
 * EFI objects it would want to access and jump to it.
 */
static efi_status_t do_bootefi_exec(void *efi, void *fdt,
				    struct efi_device_path *device_path,
				    struct efi_device_path *image_path)
{
	struct efi_loaded_image loaded_image_info = {};
	struct efi_object loaded_image_info_obj = {};
	struct efi_device_path *memdp = NULL;
	ulong ret;

	EFIAPI efi_status_t (*entry)(efi_handle_t image_handle,
				     struct efi_system_table *st);
	ulong fdt_pages, fdt_size, fdt_start, fdt_end;
	const efi_guid_t fdt_guid = EFI_FDT_GUID;
	bootm_headers_t img = { 0 };

	/*
	 * Special case for efi payload not loaded from disk, such as
	 * 'bootefi hello' or for example payload loaded directly into
	 * memory via jtag/etc:
	 */
	if (!device_path && !image_path) {
		printf("WARNING: using memory device/image path, this may confuse some payloads!\n");
		/* actual addresses filled in after efi_load_pe() */
		memdp = efi_dp_from_mem(0, 0, 0);
		device_path = image_path = memdp;
	} else {
		assert(device_path && image_path);
	}

	/* Initialize and populate EFI object list */
	if (!efi_obj_list_initalized)
		efi_init_obj_list();

	efi_setup_loaded_image(&loaded_image_info, &loaded_image_info_obj,
			       device_path, image_path);

	/*
	 * gd lives in a fixed register which may get clobbered while we execute
	 * the payload. So save it here and restore it on every callback entry
	 */
	efi_save_gd();

	if (fdt && !fdt_check_header(fdt)) {
		/* Prepare fdt for payload */
		fdt = copy_fdt(fdt);

		if (image_setup_libfdt(&img, fdt, 0, NULL)) {
			printf("ERROR: Failed to process device tree\n");
			return -EINVAL;
		}

		/* Link to it in the efi tables */
		efi_install_configuration_table(&fdt_guid, fdt);

		/* And reserve the space in the memory map */
		fdt_start = ((ulong)fdt) & ~EFI_PAGE_MASK;
		fdt_end = ((ulong)fdt) + fdt_totalsize(fdt);
		fdt_size = (fdt_end - fdt_start) + EFI_PAGE_MASK;
		fdt_pages = fdt_size >> EFI_PAGE_SHIFT;
		/* Give a bootloader the chance to modify the device tree */
		fdt_pages += 2;
		efi_add_memory_map(fdt_start, fdt_pages,
				   EFI_BOOT_SERVICES_DATA, true);
	} else {
		printf("WARNING: Invalid device tree, expect boot to fail\n");
		efi_install_configuration_table(&fdt_guid, NULL);
	}

	/* Transfer environment variable bootargs as load options */
	set_load_options(&loaded_image_info, "bootargs");
	/* Load the EFI payload */
	entry = efi_load_pe(efi, &loaded_image_info);
	if (!entry) {
		ret = -ENOENT;
		goto exit;
	}

	if (memdp) {
		struct efi_device_path_memory *mdp = (void *)memdp;
		mdp->memory_type = loaded_image_info.image_code_type;
		mdp->start_address = (uintptr_t)loaded_image_info.image_base;
		mdp->end_address = mdp->start_address +
				loaded_image_info.image_size;
	}

	/* we don't support much: */
	env_set("efi_8be4df61-93ca-11d2-aa0d-00e098032b8c_OsIndicationsSupported",
		"{ro,boot}(blob)0000000000000000");

	/* Call our payload! */
	debug("%s:%d Jumping to 0x%lx\n", __func__, __LINE__, (long)entry);

	if (setjmp(&loaded_image_info.exit_jmp)) {
		ret = loaded_image_info.exit_status;
		goto exit;
	}

#ifdef CONFIG_ARM64
	/* On AArch64 we need to make sure we call our payload in < EL3 */
	if (current_el() == 3) {
		smp_kick_all_cpus();
		dcache_disable();	/* flush cache before switch to EL2 */

		/* Move into EL2 and keep running there */
		armv8_switch_to_el2((ulong)entry,
				    (ulong)&loaded_image_info_obj.handle,
				    (ulong)&systab, 0, (ulong)efi_run_in_el2,
				    ES_TO_AARCH64);

		/* Should never reach here, efi exits with longjmp */
		while (1) { }
	}
#endif

	ret = efi_do_enter(loaded_image_info_obj.handle, &systab, entry);

exit:
	/* image has returned, loaded-image obj goes *poof*: */
	list_del(&loaded_image_info_obj.link);

	return ret;
}

static int do_bootefi_bootmgr_exec(unsigned long fdt_addr)
{
	struct efi_device_path *device_path, *file_path;
	void *addr;
	efi_status_t r;

	/* Initialize and populate EFI object list */
	if (!efi_obj_list_initalized)
		efi_init_obj_list();

	/*
	 * gd lives in a fixed register which may get clobbered while we execute
	 * the payload. So save it here and restore it on every callback entry
	 */
	efi_save_gd();

	addr = efi_bootmgr_load(&device_path, &file_path);
	if (!addr)
		return 1;

	printf("## Starting EFI application at %p ...\n", addr);
	r = do_bootefi_exec(addr, (void *)fdt_addr, device_path, file_path);
	printf("## Application terminated, r = %lu\n",
	       r & ~EFI_ERROR_MASK);

	if (r != EFI_SUCCESS)
		return 1;

	return 0;
}

/* Interpreter command to boot an arbitrary EFI image from memory */
static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	char *saddr, *sfdt;
	unsigned long addr, fdt_addr = 0;
	efi_status_t r;

	if (argc < 2)
		return CMD_RET_USAGE;
#ifdef CONFIG_CMD_BOOTEFI_HELLO
	if (!strcmp(argv[1], "hello")) {
		ulong size = __efi_helloworld_end - __efi_helloworld_begin;

		saddr = env_get("loadaddr");
		if (saddr)
			addr = simple_strtoul(saddr, NULL, 16);
		else
			addr = CONFIG_SYS_LOAD_ADDR;
		memcpy((char *)addr, __efi_helloworld_begin, size);
	} else
#endif
#ifdef CONFIG_CMD_BOOTEFI_SELFTEST
	if (!strcmp(argv[1], "selftest")) {
		struct efi_loaded_image loaded_image_info = {};
		struct efi_object loaded_image_info_obj = {};

		/* Construct a dummy device path. */
		bootefi_device_path = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE,
						      (uintptr_t)&efi_selftest,
						      (uintptr_t)&efi_selftest);
		bootefi_image_path = efi_dp_from_file(NULL, 0, "\\selftest");

		efi_setup_loaded_image(&loaded_image_info,
				       &loaded_image_info_obj,
				       bootefi_device_path, bootefi_image_path);
		/*
		 * gd lives in a fixed register which may get clobbered while we
		 * execute the payload. So save it here and restore it on every
		 * callback entry
		 */
		efi_save_gd();
		/* Initialize and populate EFI object list */
		if (!efi_obj_list_initalized)
			efi_init_obj_list();
		/* Transfer environment variable efi_selftest as load options */
		set_load_options(&loaded_image_info, "efi_selftest");
		/* Execute the test */
		r = efi_selftest(loaded_image_info_obj.handle, &systab);
		efi_restore_gd();
		free(loaded_image_info.load_options);
		list_del(&loaded_image_info_obj.link);
		return r != EFI_SUCCESS;
	} else
#endif
	if (!strcmp(argv[1], "bootmgr")) {
		unsigned long fdt_addr = 0;

		if (argc > 2)
			fdt_addr = simple_strtoul(argv[2], NULL, 16);

		return do_bootefi_bootmgr_exec(fdt_addr);
	} else {
		saddr = argv[1];

		addr = simple_strtoul(saddr, NULL, 16);
		/* Check that a numeric value was passed */
		if (!addr && *saddr != '0')
			return CMD_RET_USAGE;

		if (argc > 2) {
			sfdt = argv[2];
			fdt_addr = simple_strtoul(sfdt, NULL, 16);
		}
	}

	printf("## Starting EFI application at %08lx ...\n", addr);
	r = do_bootefi_exec((void *)addr, (void *)fdt_addr,
			    bootefi_device_path, bootefi_image_path);
	printf("## Application terminated, r = %lu\n",
	       r & ~EFI_ERROR_MASK);

	if (r != EFI_SUCCESS)
		return 1;
	else
		return 0;
}

#ifdef CONFIG_SYS_LONGHELP
static char bootefi_help_text[] =
	"<image address> [fdt address]\n"
	"  - boot EFI payload stored at address <image address>.\n"
	"    If specified, the device tree located at <fdt address> gets\n"
	"    exposed as EFI configuration table.\n"
#ifdef CONFIG_CMD_BOOTEFI_HELLO
	"bootefi hello\n"
	"  - boot a sample Hello World application stored within U-Boot\n"
#endif
#ifdef CONFIG_CMD_BOOTEFI_SELFTEST
	"bootefi selftest\n"
	"  - boot an EFI selftest application stored within U-Boot\n"
	"    Use environment variable efi_selftest to select a single test.\n"
	"    Use 'setenv efi_selftest list' to enumerate all tests.\n"
#endif
	"bootefi bootmgr [fdt addr]\n"
	"  - load and boot EFI payload based on BootOrder/BootXXXX variables.\n"
	"\n"
	"    If specified, the device tree located at <fdt address> gets\n"
	"    exposed as EFI configuration table.\n";
#endif

U_BOOT_CMD(
	bootefi, 3, 0, do_bootefi,
	"Boots an EFI payload from memory",
	bootefi_help_text
);

static int parse_partnum(const char *devnr)
{
	const char *str = strchr(devnr, ':');
	if (str) {
		str++;
		return simple_strtoul(str, NULL, 16);
	}
	return 0;
}

void efi_set_bootdev(const char *dev, const char *devnr, const char *path)
{
	char filename[32] = { 0 }; /* dp->str is u16[32] long */
	char *s;

	if (strcmp(dev, "Net")) {
		struct blk_desc *desc;
		int part;

		desc = blk_get_dev(dev, simple_strtol(devnr, NULL, 10));
		if (!desc)
			return;
		part = parse_partnum(devnr);

		bootefi_device_path = efi_dp_from_part(desc, part);
	} else {
#ifdef CONFIG_CMD_NET
		bootefi_device_path = efi_dp_from_eth();
#endif
	}

	if (!path)
		return;

	if (strcmp(dev, "Net")) {
		/* Add leading / to fs paths, because they're absolute */
		snprintf(filename, sizeof(filename), "/%s", path);
	} else {
		snprintf(filename, sizeof(filename), "%s", path);
	}
	/* DOS style file path: */
	s = filename;
	while ((s = strchr(s, '/')))
		*s++ = '\\';
	bootefi_image_path = efi_dp_from_file(NULL, 0, filename);
}
Commit	Line	Data
b9939336 AG	1	/*
	2	* EFI application loader
	3	*
	4	* Copyright (c) 2016 Alexander Graf
	5	*
	6	* SPDX-License-Identifier: GPL-2.0+
	7	*/
	8
d78e40d6	9	#include <charset.h>
b9939336 AG	10	#include <common.h>
b9939336 AG	11	#include <command.h>
9d922450	12	#include <dm.h>
b9939336	13	#include <efi_loader.h>
d78e40d6	14	#include <efi_selftest.h>
b9939336	15	#include <errno.h>
b08c8c48 MY	16	#include <linux/libfdt.h>
b08c8c48 MY	17	#include <linux/libfdt_env.h>
ad0c1a3d	18	#include <memalign.h>
0d9d501f	19	#include <asm/global_data.h>
e275458c SG	20	#include <asm-generic/sections.h>
e275458c SG	21	#include <linux/linkage.h>
0d9d501f AG	22
0d9d501f AG	23	DECLARE_GLOBAL_DATA_PTR;
b9939336	24
7cbc1241 HS	25	static uint8_t efi_obj_list_initalized;
7cbc1241 HS	26
95c5553e RC	27	static struct efi_device_path *bootefi_image_path;
95c5553e RC	28	static struct efi_device_path *bootefi_device_path;
b9939336	29
7cbc1241 HS	30	/* Initialize and populate EFI object list */
	31	static void efi_init_obj_list(void)
	32	{
	33	efi_obj_list_initalized = 1;
	34
05ef48a2 HS	35	/* Initialize EFI driver uclass */
	36	efi_driver_init();
	37
7cbc1241 HS	38	efi_console_register();
	39	#ifdef CONFIG_PARTITIONS
	40	efi_disk_register();
	41	#endif
	42	#if defined(CONFIG_LCD) \|\| defined(CONFIG_DM_VIDEO)
	43	efi_gop_register();
	44	#endif
3b3ea2c5	45	#ifdef CONFIG_CMD_NET
95c5553e	46	efi_net_register();
7cbc1241 HS	47	#endif
	48	#ifdef CONFIG_GENERATE_SMBIOS_TABLE
	49	efi_smbios_register();
	50	#endif
b3d60900	51	efi_watchdog_register();
7cbc1241 HS	52
	53	/* Initialize EFI runtime services */
	54	efi_reset_system_init();
	55	efi_get_time_init();
	56	}
	57
d78e40d6 HS	58	/*
	59	* Set the load options of an image from an environment variable.
	60	*
	61	* @loaded_image_info: the image
	62	* @env_var: name of the environment variable
	63	*/
	64	static void set_load_options(struct efi_loaded_image *loaded_image_info,
	65	const char *env_var)
	66	{
	67	size_t size;
	68	const char *env = env_get(env_var);
	69
	70	loaded_image_info->load_options = NULL;
	71	loaded_image_info->load_options_size = 0;
	72	if (!env)
	73	return;
	74	size = strlen(env) + 1;
	75	loaded_image_info->load_options = calloc(size, sizeof(u16));
	76	if (!loaded_image_info->load_options) {
	77	printf("ERROR: Out of memory\n");
	78	return;
	79	}
	80	utf8_to_utf16(loaded_image_info->load_options, (u8 *)env, size);
	81	loaded_image_info->load_options_size = size * 2;
	82	}
	83
0d9d501f AG	84	static void copy_fdt(void fdt)
	85	{
	86	u64 fdt_size = fdt_totalsize(fdt);
ad0c1a3d AG	87	unsigned long fdt_ram_start = -1L, fdt_pages;
ad0c1a3d AG	88	u64 new_fdt_addr;
0d9d501f	89	void *new_fdt;
ad0c1a3d	90	int i;
0d9d501f	91
ad0c1a3d AG	92	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
	93	u64 ram_start = gd->bd->bi_dram[i].start;
	94	u64 ram_size = gd->bd->bi_dram[i].size;
0d9d501f	95
ad0c1a3d AG	96	if (!ram_size)
	97	continue;
	98
	99	if (ram_start < fdt_ram_start)
	100	fdt_ram_start = ram_start;
	101	}
	102
	103	/* Give us at least 4kb breathing room */
a44bffcc	104	fdt_size = ALIGN(fdt_size + 4096, EFI_PAGE_SIZE);
ad0c1a3d AG	105	fdt_pages = fdt_size >> EFI_PAGE_SHIFT;
	106
	107	/* Safe fdt location is at 128MB */
	108	new_fdt_addr = fdt_ram_start + (128 * 1024 * 1024) + fdt_size;
17ff6f02	109	if (efi_allocate_pages(1, EFI_RUNTIME_SERVICES_DATA, fdt_pages,
ad0c1a3d AG	110	&new_fdt_addr) != EFI_SUCCESS) {
ad0c1a3d AG	111	/* If we can't put it there, put it somewhere */
a44bffcc	112	new_fdt_addr = (ulong)memalign(EFI_PAGE_SIZE, fdt_size);
17ff6f02	113	if (efi_allocate_pages(1, EFI_RUNTIME_SERVICES_DATA, fdt_pages,
85a6e9b3 AG	114	&new_fdt_addr) != EFI_SUCCESS) {
	115	printf("ERROR: Failed to reserve space for FDT\n");
	116	return NULL;
	117	}
ad0c1a3d	118	}
85a6e9b3	119
ad0c1a3d	120	new_fdt = (void*)(ulong)new_fdt_addr;
0d9d501f AG	121	memcpy(new_fdt, fdt, fdt_totalsize(fdt));
	122	fdt_set_totalsize(new_fdt, fdt_size);
	123
	124	return new_fdt;
	125	}
	126
3eb0841b	127	static efi_status_t efi_do_enter(
2074f700	128	efi_handle_t image_handle, struct efi_system_table *st,
c6fa5df6 AG	129	EFIAPI efi_status_t (*entry)(
	130	efi_handle_t image_handle,
	131	struct efi_system_table *st))
b06d8ac3 HS	132	{
	133	efi_status_t ret = EFI_LOAD_ERROR;
	134
	135	if (entry)
	136	ret = entry(image_handle, st);
	137	st->boottime->exit(image_handle, ret, 0, NULL);
	138	return ret;
	139	}
	140
ec6617c3	141	#ifdef CONFIG_ARM64
c6fa5df6	142	static efi_status_t efi_run_in_el2(EFIAPI efi_status_t (*entry)(
2074f700 HS	143	efi_handle_t image_handle, struct efi_system_table *st),
2074f700 HS	144	efi_handle_t image_handle, struct efi_system_table *st)
ec6617c3 AW	145	{
	146	/* Enable caches again */
	147	dcache_enable();
	148
b06d8ac3	149	return efi_do_enter(image_handle, st, entry);
ec6617c3 AW	150	}
	151	#endif
	152
b9939336 AG	153	/*
	154	* Load an EFI payload into a newly allocated piece of memory, register all
	155	* EFI objects it would want to access and jump to it.
	156	*/
3eb0841b HS	157	static efi_status_t do_bootefi_exec(void efi, void fdt,
	158	struct efi_device_path *device_path,
	159	struct efi_device_path *image_path)
b9939336	160	{
95c5553e RC	161	struct efi_loaded_image loaded_image_info = {};
95c5553e RC	162	struct efi_object loaded_image_info_obj = {};
bf19273e	163	struct efi_device_path *memdp = NULL;
95c5553e RC	164	ulong ret;
95c5553e RC	165
c6fa5df6 AG	166	EFIAPI efi_status_t (*entry)(efi_handle_t image_handle,
c6fa5df6 AG	167	struct efi_system_table *st);
b9939336	168	ulong fdt_pages, fdt_size, fdt_start, fdt_end;
f4f9993f	169	const efi_guid_t fdt_guid = EFI_FDT_GUID;
dea2174d	170	bootm_headers_t img = { 0 };
b9939336	171
bf19273e RC	172	/*
	173	* Special case for efi payload not loaded from disk, such as
	174	* 'bootefi hello' or for example payload loaded directly into
	175	* memory via jtag/etc:
	176	*/
	177	if (!device_path && !image_path) {
	178	printf("WARNING: using memory device/image path, this may confuse some payloads!\n");
	179	/* actual addresses filled in after efi_load_pe() */
	180	memdp = efi_dp_from_mem(0, 0, 0);
	181	device_path = image_path = memdp;
	182	} else {
	183	assert(device_path && image_path);
	184	}
	185
95c5553e RC	186	/* Initialize and populate EFI object list */
	187	if (!efi_obj_list_initalized)
	188	efi_init_obj_list();
	189
	190	efi_setup_loaded_image(&loaded_image_info, &loaded_image_info_obj,
	191	device_path, image_path);
	192
b9939336 AG	193	/*
	194	* gd lives in a fixed register which may get clobbered while we execute
	195	* the payload. So save it here and restore it on every callback entry
	196	*/
	197	efi_save_gd();
	198
1c39809b	199	if (fdt && !fdt_check_header(fdt)) {
dea2174d	200	/* Prepare fdt for payload */
0d9d501f AG	201	fdt = copy_fdt(fdt);
	202
	203	if (image_setup_libfdt(&img, fdt, 0, NULL)) {
dea2174d AG	204	printf("ERROR: Failed to process device tree\n");
	205	return -EINVAL;
	206	}
	207
	208	/* Link to it in the efi tables */
f4f9993f	209	efi_install_configuration_table(&fdt_guid, fdt);
b9939336 AG	210
b9939336 AG	211	/* And reserve the space in the memory map */
0d9d501f AG	212	fdt_start = ((ulong)fdt) & ~EFI_PAGE_MASK;
0d9d501f AG	213	fdt_end = ((ulong)fdt) + fdt_totalsize(fdt);
b9939336 AG	214	fdt_size = (fdt_end - fdt_start) + EFI_PAGE_MASK;
	215	fdt_pages = fdt_size >> EFI_PAGE_SHIFT;
	216	/* Give a bootloader the chance to modify the device tree */
	217	fdt_pages += 2;
	218	efi_add_memory_map(fdt_start, fdt_pages,
	219	EFI_BOOT_SERVICES_DATA, true);
b9939336	220	} else {
1c39809b	221	printf("WARNING: Invalid device tree, expect boot to fail\n");
f4f9993f	222	efi_install_configuration_table(&fdt_guid, NULL);
b9939336 AG	223	}
b9939336 AG	224
b57f48a8 HS	225	/* Transfer environment variable bootargs as load options */
b57f48a8 HS	226	set_load_options(&loaded_image_info, "bootargs");
b9939336 AG	227	/* Load the EFI payload */
b9939336 AG	228	entry = efi_load_pe(efi, &loaded_image_info);
95c5553e RC	229	if (!entry) {
	230	ret = -ENOENT;
	231	goto exit;
	232	}
80a4800e	233
bf19273e RC	234	if (memdp) {
	235	struct efi_device_path_memory mdp = (void )memdp;
	236	mdp->memory_type = loaded_image_info.image_code_type;
	237	mdp->start_address = (uintptr_t)loaded_image_info.image_base;
	238	mdp->end_address = mdp->start_address +
	239	loaded_image_info.image_size;
	240	}
	241
ad644e7c RC	242	/* we don't support much: */
	243	env_set("efi_8be4df61-93ca-11d2-aa0d-00e098032b8c_OsIndicationsSupported",
	244	"{ro,boot}(blob)0000000000000000");
	245
b9939336	246	/* Call our payload! */
edcef3ba	247	debug("%s:%d Jumping to 0x%lx\n", __func__, __LINE__, (long)entry);
a86aeaf2 AG	248
a86aeaf2 AG	249	if (setjmp(&loaded_image_info.exit_jmp)) {
95c5553e	250	ret = loaded_image_info.exit_status;
95c5553e	251	goto exit;
a86aeaf2 AG	252	}
a86aeaf2 AG	253
69bd459d AG	254	#ifdef CONFIG_ARM64
	255	/* On AArch64 we need to make sure we call our payload in < EL3 */
	256	if (current_el() == 3) {
	257	smp_kick_all_cpus();
	258	dcache_disable(); /* flush cache before switch to EL2 */
ec6617c3 AW	259
ec6617c3 AW	260	/* Move into EL2 and keep running there */
ea54ad59 HS	261	armv8_switch_to_el2((ulong)entry,
ea54ad59 HS	262	(ulong)&loaded_image_info_obj.handle,
7c5e1feb	263	(ulong)&systab, 0, (ulong)efi_run_in_el2,
ec6617c3 AW	264	ES_TO_AARCH64);
	265
	266	/* Should never reach here, efi exits with longjmp */
	267	while (1) { }
69bd459d AG	268	}
	269	#endif
	270
ea54ad59	271	ret = efi_do_enter(loaded_image_info_obj.handle, &systab, entry);
95c5553e RC	272
	273	exit:
	274	/* image has returned, loaded-image obj goes poof: */
	275	list_del(&loaded_image_info_obj.link);
	276
	277	return ret;
b9939336 AG	278	}
b9939336 AG	279
9975fe96 RC	280	static int do_bootefi_bootmgr_exec(unsigned long fdt_addr)
	281	{
	282	struct efi_device_path device_path, file_path;
	283	void *addr;
	284	efi_status_t r;
	285
	286	/* Initialize and populate EFI object list */
	287	if (!efi_obj_list_initalized)
	288	efi_init_obj_list();
	289
	290	/*
	291	* gd lives in a fixed register which may get clobbered while we execute
	292	* the payload. So save it here and restore it on every callback entry
	293	*/
	294	efi_save_gd();
	295
	296	addr = efi_bootmgr_load(&device_path, &file_path);
	297	if (!addr)
	298	return 1;
	299
	300	printf("## Starting EFI application at %p ...\n", addr);
	301	r = do_bootefi_exec(addr, (void *)fdt_addr, device_path, file_path);
	302	printf("## Application terminated, r = %lu\n",
	303	r & ~EFI_ERROR_MASK);
	304
	305	if (r != EFI_SUCCESS)
	306	return 1;
	307
	308	return 0;
	309	}
	310
b9939336 AG	311	/* Interpreter command to boot an arbitrary EFI image from memory */
	312	static int do_bootefi(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	313	{
1c39809b AG	314	char saddr, sfdt;
1c39809b AG	315	unsigned long addr, fdt_addr = 0;
3eb0841b	316	efi_status_t r;
b9939336 AG	317
b9939336 AG	318	if (argc < 2)
3c1dcef6	319	return CMD_RET_USAGE;
c7ae3dfd SG	320	#ifdef CONFIG_CMD_BOOTEFI_HELLO
c7ae3dfd SG	321	if (!strcmp(argv[1], "hello")) {
5e44489b	322	ulong size = __efi_helloworld_end - __efi_helloworld_begin;
b9939336	323
51c533fd HS	324	saddr = env_get("loadaddr");
	325	if (saddr)
	326	addr = simple_strtoul(saddr, NULL, 16);
	327	else
	328	addr = CONFIG_SYS_LOAD_ADDR;
5e44489b	329	memcpy((char *)addr, __efi_helloworld_begin, size);
c7ae3dfd	330	} else
623b3a57 HS	331	#endif
	332	#ifdef CONFIG_CMD_BOOTEFI_SELFTEST
	333	if (!strcmp(argv[1], "selftest")) {
7aca68ca HS	334	struct efi_loaded_image loaded_image_info = {};
	335	struct efi_object loaded_image_info_obj = {};
	336
f972dc14 HS	337	/* Construct a dummy device path. */
	338	bootefi_device_path = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE,
	339	(uintptr_t)&efi_selftest,
	340	(uintptr_t)&efi_selftest);
	341	bootefi_image_path = efi_dp_from_file(NULL, 0, "\\selftest");
	342
7aca68ca HS	343	efi_setup_loaded_image(&loaded_image_info,
	344	&loaded_image_info_obj,
	345	bootefi_device_path, bootefi_image_path);
623b3a57 HS	346	/*
	347	* gd lives in a fixed register which may get clobbered while we
	348	* execute the payload. So save it here and restore it on every
	349	* callback entry
	350	*/
	351	efi_save_gd();
	352	/* Initialize and populate EFI object list */
	353	if (!efi_obj_list_initalized)
	354	efi_init_obj_list();
d78e40d6 HS	355	/* Transfer environment variable efi_selftest as load options */
	356	set_load_options(&loaded_image_info, "efi_selftest");
	357	/* Execute the test */
ea54ad59	358	r = efi_selftest(loaded_image_info_obj.handle, &systab);
c2b53902	359	efi_restore_gd();
d78e40d6	360	free(loaded_image_info.load_options);
c2b53902 HS	361	list_del(&loaded_image_info_obj.link);
c2b53902 HS	362	return r != EFI_SUCCESS;
623b3a57	363	} else
c7ae3dfd	364	#endif
9975fe96 RC	365	if (!strcmp(argv[1], "bootmgr")) {
	366	unsigned long fdt_addr = 0;
	367
	368	if (argc > 2)
	369	fdt_addr = simple_strtoul(argv[2], NULL, 16);
	370
	371	return do_bootefi_bootmgr_exec(fdt_addr);
	372	} else {
c7ae3dfd	373	saddr = argv[1];
b9939336	374
c7ae3dfd	375	addr = simple_strtoul(saddr, NULL, 16);
49db1cb8 HS	376	/* Check that a numeric value was passed */
	377	if (!addr && *saddr != '0')
	378	return CMD_RET_USAGE;
c7ae3dfd SG	379
	380	if (argc > 2) {
	381	sfdt = argv[2];
	382	fdt_addr = simple_strtoul(sfdt, NULL, 16);
	383	}
1c39809b AG	384	}
1c39809b AG	385
5ee31baf	386	printf("## Starting EFI application at %08lx ...\n", addr);
95c5553e RC	387	r = do_bootefi_exec((void )addr, (void )fdt_addr,
95c5553e RC	388	bootefi_device_path, bootefi_image_path);
1da1bac4 HS	389	printf("## Application terminated, r = %lu\n",
1da1bac4 HS	390	r & ~EFI_ERROR_MASK);
b9939336	391
1da1bac4 HS	392	if (r != EFI_SUCCESS)
	393	return 1;
	394	else
	395	return 0;
b9939336 AG	396	}
	397
	398	#ifdef CONFIG_SYS_LONGHELP
	399	static char bootefi_help_text[] =
1c39809b AG	400	"<image address> [fdt address]\n"
	401	" - boot EFI payload stored at address <image address>.\n"
	402	" If specified, the device tree located at <fdt address> gets\n"
c7ae3dfd SG	403	" exposed as EFI configuration table.\n"
c7ae3dfd SG	404	#ifdef CONFIG_CMD_BOOTEFI_HELLO
623b3a57 HS	405	"bootefi hello\n"
	406	" - boot a sample Hello World application stored within U-Boot\n"
	407	#endif
	408	#ifdef CONFIG_CMD_BOOTEFI_SELFTEST
	409	"bootefi selftest\n"
	410	" - boot an EFI selftest application stored within U-Boot\n"
d78e40d6 HS	411	" Use environment variable efi_selftest to select a single test.\n"
d78e40d6 HS	412	" Use 'setenv efi_selftest list' to enumerate all tests.\n"
c7ae3dfd	413	#endif
f623e07f	414	"bootefi bootmgr [fdt addr]\n"
9975fe96 RC	415	" - load and boot EFI payload based on BootOrder/BootXXXX variables.\n"
	416	"\n"
	417	" If specified, the device tree located at <fdt address> gets\n"
	418	" exposed as EFI configuration table.\n";
b9939336 AG	419	#endif
	420
	421	U_BOOT_CMD(
1c39809b	422	bootefi, 3, 0, do_bootefi,
92dfd922	423	"Boots an EFI payload from memory",
b9939336 AG	424	bootefi_help_text
b9939336 AG	425	);
0f4060eb	426
95c5553e	427	static int parse_partnum(const char *devnr)
0f4060eb	428	{
95c5553e RC	429	const char *str = strchr(devnr, ':');
	430	if (str) {
	431	str++;
	432	return simple_strtoul(str, NULL, 16);
f9d334bd	433	}
95c5553e RC	434	return 0;
95c5553e RC	435	}
f9d334bd	436
95c5553e RC	437	void efi_set_bootdev(const char dev, const char devnr, const char *path)
	438	{
	439	char filename[32] = { 0 }; /* dp->str is u16[32] long */
	440	char *s;
f9d334bd	441
95c5553e RC	442	if (strcmp(dev, "Net")) {
	443	struct blk_desc *desc;
	444	int part;
8c3df0bf	445
95c5553e	446	desc = blk_get_dev(dev, simple_strtol(devnr, NULL, 10));
8300be61 SR	447	if (!desc)
8300be61 SR	448	return;
95c5553e	449	part = parse_partnum(devnr);
0f4060eb	450
95c5553e RC	451	bootefi_device_path = efi_dp_from_part(desc, part);
95c5553e RC	452	} else {
3b3ea2c5	453	#ifdef CONFIG_CMD_NET
95c5553e RC	454	bootefi_device_path = efi_dp_from_eth();
	455	#endif
	456	}
c07ad7c0	457
9975fe96 RC	458	if (!path)
	459	return;
	460
49271666 AG	461	if (strcmp(dev, "Net")) {
49271666 AG	462	/* Add leading / to fs paths, because they're absolute */
95c5553e	463	snprintf(filename, sizeof(filename), "/%s", path);
49271666	464	} else {
95c5553e	465	snprintf(filename, sizeof(filename), "%s", path);
49271666	466	}
3e433e96	467	/* DOS style file path: */
95c5553e	468	s = filename;
3e433e96 RC	469	while ((s = strchr(s, '/')))
3e433e96 RC	470	*s++ = '\\';
95c5553e	471	bootefi_image_path = efi_dp_from_file(NULL, 0, filename);
0f4060eb	472	}