+// SPDX-License-Identifier: GPL-2.0+
/*
* EFI application loader
*
* Copyright (c) 2016 Alexander Graf
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
+#include <charset.h>
#include <command.h>
#include <dm.h>
#include <efi_loader.h>
+#include <efi_selftest.h>
#include <errno.h>
-#include <libfdt.h>
-#include <libfdt_env.h>
+#include <linux/libfdt.h>
+#include <linux/libfdt_env.h>
+#include <mapmem.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;
-/*
- * When booting using the "bootefi" command, we don't know which
- * physical device the file came from. So we create a pseudo-device
- * called "bootefi" with the device path /bootefi.
+/**
+ * Set the load options of an image from an environment variable.
*
- * In addition to the originating device we also declare the file path
- * of "bootefi" based loads to be /bootefi.
+ * @handle: the image handle
+ * @env_var: name of the environment variable
+ * Return: status code
*/
-static struct efi_device_path_file_path bootefi_image_path[] = {
- {
- .dp.type = DEVICE_PATH_TYPE_MEDIA_DEVICE,
- .dp.sub_type = DEVICE_PATH_SUB_TYPE_FILE_PATH,
- .dp.length = sizeof(bootefi_image_path[0]),
- .str = { 'b','o','o','t','e','f','i' },
- }, {
- .dp.type = DEVICE_PATH_TYPE_END,
- .dp.sub_type = DEVICE_PATH_SUB_TYPE_END,
- .dp.length = sizeof(bootefi_image_path[0]),
- }
-};
-
-static struct efi_device_path_file_path bootefi_device_path[] = {
- {
- .dp.type = DEVICE_PATH_TYPE_MEDIA_DEVICE,
- .dp.sub_type = DEVICE_PATH_SUB_TYPE_FILE_PATH,
- .dp.length = sizeof(bootefi_image_path[0]),
- .str = { 'b','o','o','t','e','f','i' },
- }, {
- .dp.type = DEVICE_PATH_TYPE_END,
- .dp.sub_type = DEVICE_PATH_SUB_TYPE_END,
- .dp.length = sizeof(bootefi_image_path[0]),
- }
-};
-
-/* The EFI loaded_image interface for the image executed via "bootefi" */
-static struct efi_loaded_image loaded_image_info = {
- .device_handle = bootefi_device_path,
- .file_path = bootefi_image_path,
-};
-
-/* The EFI object struct for the image executed via "bootefi" */
-static struct efi_object loaded_image_info_obj = {
- .handle = &loaded_image_info,
- .protocols = {
- {
- /*
- * When asking for the loaded_image interface, just
- * return handle which points to loaded_image_info
- */
- .guid = &efi_guid_loaded_image,
- .protocol_interface = &loaded_image_info,
- },
- {
- /*
- * When asking for the device path interface, return
- * bootefi_device_path
- */
- .guid = &efi_guid_device_path,
- .protocol_interface = bootefi_device_path,
- },
- {
- .guid = &efi_guid_console_control,
- .protocol_interface = (void *) &efi_console_control
- },
- {
- .guid = &efi_guid_device_path_to_text_protocol,
- .protocol_interface = (void *) &efi_device_path_to_text
- },
- },
-};
-
-/* The EFI object struct for the device the "bootefi" image was loaded from */
-static struct efi_object bootefi_device_obj = {
- .handle = bootefi_device_path,
- .protocols = {
- {
- /* When asking for the device path interface, return
- * bootefi_device_path */
- .guid = &efi_guid_device_path,
- .protocol_interface = bootefi_device_path
- }
- },
-};
-
-/* Initialize and populate EFI object list */
-static void efi_init_obj_list(void)
+static efi_status_t set_load_options(efi_handle_t handle, const char *env_var)
{
- efi_obj_list_initalized = 1;
-
- list_add_tail(&loaded_image_info_obj.link, &efi_obj_list);
- list_add_tail(&bootefi_device_obj.link, &efi_obj_list);
- efi_console_register();
-#ifdef CONFIG_PARTITIONS
- efi_disk_register();
-#endif
-#if defined(CONFIG_LCD) || defined(CONFIG_DM_VIDEO)
- efi_gop_register();
-#endif
-#ifdef CONFIG_NET
- void *nethandle = loaded_image_info.device_handle;
- efi_net_register(&nethandle);
-
- if (!memcmp(bootefi_device_path[0].str, "N\0e\0t", 6))
- loaded_image_info.device_handle = nethandle;
- else
- loaded_image_info.device_handle = bootefi_device_path;
-#endif
-#ifdef CONFIG_GENERATE_SMBIOS_TABLE
- efi_smbios_register();
-#endif
-
- /* Initialize EFI runtime services */
- efi_reset_system_init();
- efi_get_time_init();
+ struct efi_loaded_image *loaded_image_info;
+ size_t size;
+ const char *env = env_get(env_var);
+ u16 *pos;
+ efi_status_t ret;
+
+ ret = EFI_CALL(systab.boottime->open_protocol(
+ handle,
+ &efi_guid_loaded_image,
+ (void **)&loaded_image_info,
+ efi_root, NULL,
+ EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL));
+ if (ret != EFI_SUCCESS)
+ return EFI_INVALID_PARAMETER;
+
+ loaded_image_info->load_options = NULL;
+ loaded_image_info->load_options_size = 0;
+ if (!env)
+ goto out;
+
+ size = utf8_utf16_strlen(env) + 1;
+ loaded_image_info->load_options = calloc(size, sizeof(u16));
+ if (!loaded_image_info->load_options) {
+ printf("ERROR: Out of memory\n");
+ EFI_CALL(systab.boottime->close_protocol(handle,
+ &efi_guid_loaded_image,
+ efi_root, NULL));
+ return EFI_OUT_OF_RESOURCES;
+ }
+ pos = loaded_image_info->load_options;
+ utf8_utf16_strcpy(&pos, env);
+ loaded_image_info->load_options_size = size * 2;
+
+out:
+ return EFI_CALL(systab.boottime->close_protocol(handle,
+ &efi_guid_loaded_image,
+ efi_root, NULL));
}
-static void *copy_fdt(void *fdt)
+#if !CONFIG_IS_ENABLED(GENERATE_ACPI_TABLE)
+
+/**
+ * copy_fdt() - Copy the device tree to a new location available to EFI
+ *
+ * The FDT is copied to a suitable location within the EFI memory map.
+ * Additional 12 KiB are added to the space in case the device tree needs to be
+ * expanded later with fdt_open_into().
+ *
+ * @fdtp: On entry a pointer to the flattened device tree.
+ * On exit a pointer to the copy of the flattened device tree.
+ * FDT start
+ * Return: status code
+ */
+static efi_status_t copy_fdt(void **fdtp)
{
- u64 fdt_size = fdt_totalsize(fdt);
unsigned long fdt_ram_start = -1L, fdt_pages;
+ efi_status_t ret = 0;
+ void *fdt, *new_fdt;
u64 new_fdt_addr;
- void *new_fdt;
+ uint fdt_size;
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;
+ 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;
fdt_ram_start = ram_start;
}
- /* Give us at least 4kb breathing room */
- fdt_size = ALIGN(fdt_size + 4096, 4096);
- fdt_pages = fdt_size >> EFI_PAGE_SHIFT;
+ /*
+ * Give us at least 12 KiB of breathing room in case the device tree
+ * needs to be expanded later.
+ */
+ fdt = *fdtp;
+ fdt_pages = efi_size_in_pages(fdt_totalsize(fdt) + 0x3000);
+ fdt_size = fdt_pages << 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_BOOT_SERVICES_DATA, fdt_pages,
- &new_fdt_addr) != EFI_SUCCESS) {
+ /*
+ * Safe fdt location is at 127 MiB.
+ * On the sandbox convert from the sandbox address space.
+ */
+ new_fdt_addr = (uintptr_t)map_sysmem(fdt_ram_start + 0x7f00000 +
+ fdt_size, 0);
+ ret = efi_allocate_pages(EFI_ALLOCATE_MAX_ADDRESS,
+ EFI_BOOT_SERVICES_DATA, fdt_pages,
+ &new_fdt_addr);
+ if (ret != EFI_SUCCESS) {
/* If we can't put it there, put it somewhere */
- new_fdt_addr = (ulong)memalign(4096, fdt_size);
- if (efi_allocate_pages(1, EFI_BOOT_SERVICES_DATA, fdt_pages,
- &new_fdt_addr) != EFI_SUCCESS) {
+ new_fdt_addr = (ulong)memalign(EFI_PAGE_SIZE, fdt_size);
+ ret = efi_allocate_pages(EFI_ALLOCATE_MAX_ADDRESS,
+ EFI_BOOT_SERVICES_DATA, fdt_pages,
+ &new_fdt_addr);
+ if (ret != EFI_SUCCESS) {
printf("ERROR: Failed to reserve space for FDT\n");
- return NULL;
+ goto done;
}
}
-
- new_fdt = (void*)(ulong)new_fdt_addr;
+ new_fdt = (void *)(uintptr_t)new_fdt_addr;
memcpy(new_fdt, fdt, fdt_totalsize(fdt));
fdt_set_totalsize(new_fdt, fdt_size);
- return new_fdt;
+ *fdtp = (void *)(uintptr_t)new_fdt_addr;
+done:
+ return ret;
}
-static ulong efi_do_enter(void *image_handle,
- struct efi_system_table *st,
- asmlinkage ulong (*entry)(void *image_handle,
- struct efi_system_table *st))
+/**
+ * efi_carve_out_dt_rsv() - Carve out DT reserved memory ranges
+ *
+ * The mem_rsv entries of the FDT are added to the memory map. Any failures are
+ * ignored because this is not critical and we would rather continue to try to
+ * boot.
+ *
+ * @fdt: Pointer to device tree
+ */
+static void efi_carve_out_dt_rsv(void *fdt)
{
- efi_status_t ret = EFI_LOAD_ERROR;
+ int nr_rsv, i;
+ uint64_t addr, size, pages;
- if (entry)
- ret = entry(image_handle, st);
- st->boottime->exit(image_handle, ret, 0, NULL);
- return ret;
+ nr_rsv = fdt_num_mem_rsv(fdt);
+
+ /* Look for an existing entry and add it to the efi mem map. */
+ for (i = 0; i < nr_rsv; i++) {
+ if (fdt_get_mem_rsv(fdt, i, &addr, &size) != 0)
+ continue;
+
+ /* Convert from sandbox address space. */
+ addr = (uintptr_t)map_sysmem(addr, 0);
+
+ pages = efi_size_in_pages(size + (addr & EFI_PAGE_MASK));
+ addr &= ~EFI_PAGE_MASK;
+ if (efi_add_memory_map(addr, pages, EFI_RESERVED_MEMORY_TYPE,
+ false) != EFI_SUCCESS)
+ printf("FDT memrsv map %d: Failed to add to map\n", i);
+ }
}
-#ifdef CONFIG_ARM64
-static unsigned long efi_run_in_el2(asmlinkage ulong (*entry)(
- void *image_handle, struct efi_system_table *st),
- void *image_handle, struct efi_system_table *st)
+/**
+ * get_config_table() - get configuration table
+ *
+ * @guid: GUID of the configuration table
+ * Return: pointer to configuration table or NULL
+ */
+static void *get_config_table(const efi_guid_t *guid)
{
- /* Enable caches again */
- dcache_enable();
+ size_t i;
- return efi_do_enter(image_handle, st, entry);
+ for (i = 0; i < systab.nr_tables; i++) {
+ if (!guidcmp(guid, &systab.tables[i].guid))
+ return systab.tables[i].table;
+ }
+ return NULL;
}
-#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.
+#endif /* !CONFIG_IS_ENABLED(GENERATE_ACPI_TABLE) */
+
+/**
+ * efi_install_fdt() - install fdt passed by a command argument
+ *
+ * If fdt_opt is available, the device tree located at that memory address will
+ * will be installed as configuration table, otherwise the device tree located
+ * at the address indicated by environment variable fdtcontroladdr will be used.
+ *
+ * On architectures (x86) using ACPI tables device trees shall not be installed
+ * as configuration table.
+ *
+ * @fdt_opt: pointer to argument
+ * Return: status code
*/
-static unsigned long do_bootefi_exec(void *efi, void *fdt)
+static efi_status_t efi_install_fdt(const char *fdt_opt)
{
- ulong (*entry)(void *image_handle, struct efi_system_table *st)
- asmlinkage;
- ulong fdt_pages, fdt_size, fdt_start, fdt_end;
- const efi_guid_t fdt_guid = EFI_FDT_GUID;
- bootm_headers_t img = { 0 };
-
/*
- * 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
+ * The EBBR spec requires that we have either an FDT or an ACPI table
+ * but not both.
*/
- efi_save_gd();
-
- if (fdt && !fdt_check_header(fdt)) {
- /* Prepare fdt for payload */
- fdt = copy_fdt(fdt);
+#if CONFIG_IS_ENABLED(GENERATE_ACPI_TABLE)
+ if (fdt_opt) {
+ printf("ERROR: can't have ACPI table and device tree.\n");
+ return EFI_LOAD_ERROR;
+ }
+#else
+ unsigned long fdt_addr;
+ void *fdt;
+ bootm_headers_t img = { 0 };
+ efi_status_t ret;
- if (image_setup_libfdt(&img, fdt, 0, NULL)) {
- printf("ERROR: Failed to process device tree\n");
- return -EINVAL;
+ if (fdt_opt) {
+ fdt_addr = simple_strtoul(fdt_opt, NULL, 16);
+ if (!fdt_addr)
+ return EFI_INVALID_PARAMETER;
+ } else {
+ /* Look for device tree that is already installed */
+ if (get_config_table(&efi_guid_fdt))
+ return EFI_SUCCESS;
+ /* Use our own device tree as default */
+ fdt_opt = env_get("fdtcontroladdr");
+ if (!fdt_opt) {
+ printf("ERROR: need device tree\n");
+ return EFI_NOT_FOUND;
+ }
+ fdt_addr = simple_strtoul(fdt_opt, NULL, 16);
+ if (!fdt_addr) {
+ printf("ERROR: invalid $fdtcontroladdr\n");
+ return EFI_LOAD_ERROR;
}
+ }
- /* 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);
+ /* Install device tree */
+ fdt = map_sysmem(fdt_addr, 0);
+ if (fdt_check_header(fdt)) {
+ printf("ERROR: invalid device tree\n");
+ return EFI_LOAD_ERROR;
}
- /* Load the EFI payload */
- entry = efi_load_pe(efi, &loaded_image_info);
- if (!entry)
- return -ENOENT;
+ /* Create memory reservations as indicated by the device tree */
+ efi_carve_out_dt_rsv(fdt);
- /* Initialize and populate EFI object list */
- if (!efi_obj_list_initalized)
- efi_init_obj_list();
+ /* Prepare device tree for payload */
+ ret = copy_fdt(&fdt);
+ if (ret) {
+ printf("ERROR: out of memory\n");
+ return EFI_OUT_OF_RESOURCES;
+ }
- /* Call our payload! */
- debug("%s:%d Jumping to 0x%lx\n", __func__, __LINE__, (long)entry);
+ if (image_setup_libfdt(&img, fdt, 0, NULL)) {
+ printf("ERROR: failed to process device tree\n");
+ return EFI_LOAD_ERROR;
+ }
- if (setjmp(&loaded_image_info.exit_jmp)) {
- return loaded_image_info.exit_status;
+ /* Install device tree as UEFI table */
+ ret = efi_install_configuration_table(&efi_guid_fdt, fdt);
+ if (ret != EFI_SUCCESS) {
+ printf("ERROR: failed to install device tree\n");
+ return ret;
}
+#endif /* GENERATE_ACPI_TABLE */
-#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 */
+ return EFI_SUCCESS;
+}
+
+/**
+ * do_bootefi_exec() - execute EFI binary
+ *
+ * @handle: handle of loaded image
+ * Return: status code
+ *
+ * Load the EFI binary into a newly assigned memory unwinding the relocation
+ * information, install the loaded image protocol, and call the binary.
+ */
+static efi_status_t do_bootefi_exec(efi_handle_t handle)
+{
+ efi_status_t ret;
+ efi_uintn_t exit_data_size = 0;
+ u16 *exit_data = NULL;
- /* Move into EL2 and keep running there */
- armv8_switch_to_el2((ulong)entry, (ulong)&loaded_image_info,
- (ulong)&systab, 0, (ulong)efi_run_in_el2,
- ES_TO_AARCH64);
+ /* Transfer environment variable as load options */
+ ret = set_load_options(handle, "bootargs");
+ if (ret != EFI_SUCCESS)
+ return ret;
- /* Should never reach here, efi exits with longjmp */
- while (1) { }
+ /* Call our payload! */
+ ret = EFI_CALL(efi_start_image(handle, &exit_data_size, &exit_data));
+ printf("## Application terminated, r = %lu\n", ret & ~EFI_ERROR_MASK);
+ if (ret && exit_data) {
+ printf("## %ls\n", exit_data);
+ efi_free_pool(exit_data);
}
-#endif
- return efi_do_enter(&loaded_image_info, &systab, entry);
+ efi_restore_gd();
+
+ /*
+ * FIXME: Who is responsible for
+ * free(loaded_image_info->load_options);
+ * Once efi_exit() is implemented correctly,
+ * handle itself doesn't exist here.
+ */
+
+ return ret;
}
+/**
+ * do_efibootmgr() - execute EFI boot manager
+ *
+ * Return: status code
+ */
+static int do_efibootmgr(void)
+{
+ efi_handle_t handle;
+ efi_status_t ret;
+
+ ret = efi_bootmgr_load(&handle);
+ if (ret != EFI_SUCCESS) {
+ printf("EFI boot manager: Cannot load any image\n");
+ return CMD_RET_FAILURE;
+ }
-/* 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[])
+ ret = do_bootefi_exec(handle);
+
+ if (ret != EFI_SUCCESS)
+ return CMD_RET_FAILURE;
+
+ return CMD_RET_SUCCESS;
+}
+
+/**
+ * do_bootefi_image() - execute EFI binary
+ *
+ * Set up memory image for the binary to be loaded, prepare device path, and
+ * then call do_bootefi_exec() to execute it.
+ *
+ * @image_opt: string of image start address
+ * Return: status code
+ */
+static int do_bootefi_image(const char *image_opt)
{
- char *saddr, *sfdt;
- unsigned long addr, fdt_addr = 0;
- unsigned long r;
+ void *image_buf;
+ struct efi_device_path *device_path, *image_path;
+ struct efi_device_path *file_path = NULL;
+ unsigned long addr, size;
+ const char *size_str;
+ efi_handle_t mem_handle = NULL, handle;
+ efi_status_t ret;
- if (argc < 2)
- return CMD_RET_USAGE;
#ifdef CONFIG_CMD_BOOTEFI_HELLO
- if (!strcmp(argv[1], "hello")) {
- ulong size = __efi_hello_world_end - __efi_hello_world_begin;
+ if (!strcmp(image_opt, "hello")) {
+ char *saddr;
+
+ saddr = env_get("loadaddr");
+ size = __efi_helloworld_end - __efi_helloworld_begin;
+
+ if (saddr)
+ addr = simple_strtoul(saddr, NULL, 16);
+ else
+ addr = CONFIG_SYS_LOAD_ADDR;
- addr = CONFIG_SYS_LOAD_ADDR;
- memcpy((char *)addr, __efi_hello_world_begin, size);
+ image_buf = map_sysmem(addr, size);
+ memcpy(image_buf, __efi_helloworld_begin, size);
+
+ device_path = NULL;
+ image_path = NULL;
} else
#endif
{
- saddr = argv[1];
+ size_str = env_get("filesize");
+ if (size_str)
+ size = simple_strtoul(size_str, NULL, 16);
+ else
+ size = 0;
- addr = simple_strtoul(saddr, NULL, 16);
+ addr = simple_strtoul(image_opt, NULL, 16);
+ /* Check that a numeric value was passed */
+ if (!addr && *image_opt != '0')
+ return CMD_RET_USAGE;
- if (argc > 2) {
- sfdt = argv[2];
- fdt_addr = simple_strtoul(sfdt, NULL, 16);
- }
+ image_buf = map_sysmem(addr, size);
+
+ device_path = bootefi_device_path;
+ image_path = bootefi_image_path;
+ }
+
+ if (!device_path && !image_path) {
+ /*
+ * Special case for efi payload not loaded from disk,
+ * such as 'bootefi hello' or for example payload
+ * loaded directly into memory via JTAG, etc:
+ */
+ file_path = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE,
+ (uintptr_t)image_buf, size);
+ /*
+ * Make sure that device for device_path exist
+ * in load_image(). Otherwise, shell and grub will fail.
+ */
+ ret = efi_create_handle(&mem_handle);
+ if (ret != EFI_SUCCESS)
+ goto out;
+
+ ret = efi_add_protocol(mem_handle, &efi_guid_device_path,
+ file_path);
+ if (ret != EFI_SUCCESS)
+ goto out;
+ } else {
+ assert(device_path && image_path);
+ file_path = efi_dp_append(device_path, image_path);
+ }
+
+ ret = EFI_CALL(efi_load_image(false, efi_root,
+ file_path, image_buf, size, &handle));
+ if (ret != EFI_SUCCESS)
+ goto out;
+
+ ret = do_bootefi_exec(handle);
+
+out:
+ if (mem_handle)
+ efi_delete_handle(mem_handle);
+ if (file_path)
+ efi_free_pool(file_path);
+
+ if (ret != EFI_SUCCESS)
+ return CMD_RET_FAILURE;
+
+ return CMD_RET_SUCCESS;
+}
+
+#ifdef CONFIG_CMD_BOOTEFI_SELFTEST
+static efi_status_t bootefi_run_prepare(const char *load_options_path,
+ struct efi_device_path *device_path,
+ struct efi_device_path *image_path,
+ struct efi_loaded_image_obj **image_objp,
+ struct efi_loaded_image **loaded_image_infop)
+{
+ efi_status_t ret;
+
+ ret = efi_setup_loaded_image(device_path, image_path, image_objp,
+ loaded_image_infop);
+ if (ret != EFI_SUCCESS)
+ return ret;
+
+ /* Transfer environment variable as load options */
+ return set_load_options((efi_handle_t)*image_objp, load_options_path);
+}
+
+/**
+ * bootefi_test_prepare() - prepare to run an EFI test
+ *
+ * Prepare to run a test as if it were provided by a loaded image.
+ *
+ * @image_objp: pointer to be set to the loaded image handle
+ * @loaded_image_infop: pointer to be set to the loaded image protocol
+ * @path: dummy file path used to construct the device path
+ * set in the loaded image protocol
+ * @load_options_path: name of a U-Boot environment variable. Its value is
+ * set as load options in the loaded image protocol.
+ * Return: status code
+ */
+static efi_status_t bootefi_test_prepare
+ (struct efi_loaded_image_obj **image_objp,
+ struct efi_loaded_image **loaded_image_infop, const char *path,
+ const char *load_options_path)
+{
+ efi_status_t ret;
+
+ /* Construct a dummy device path */
+ bootefi_device_path = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE, 0, 0);
+ if (!bootefi_device_path)
+ return EFI_OUT_OF_RESOURCES;
+
+ bootefi_image_path = efi_dp_from_file(NULL, 0, path);
+ if (!bootefi_image_path) {
+ ret = EFI_OUT_OF_RESOURCES;
+ goto failure;
+ }
+
+ ret = bootefi_run_prepare(load_options_path, bootefi_device_path,
+ bootefi_image_path, image_objp,
+ loaded_image_infop);
+ if (ret == EFI_SUCCESS)
+ return ret;
+
+ efi_free_pool(bootefi_image_path);
+ bootefi_image_path = NULL;
+failure:
+ efi_free_pool(bootefi_device_path);
+ bootefi_device_path = NULL;
+ return ret;
+}
+
+/**
+ * bootefi_run_finish() - finish up after running an EFI test
+ *
+ * @loaded_image_info: Pointer to a struct which holds the loaded image info
+ * @image_obj: Pointer to a struct which holds the loaded image object
+ */
+static void bootefi_run_finish(struct efi_loaded_image_obj *image_obj,
+ struct efi_loaded_image *loaded_image_info)
+{
+ efi_restore_gd();
+ free(loaded_image_info->load_options);
+ efi_delete_handle(&image_obj->header);
+}
+
+/**
+ * do_efi_selftest() - execute EFI selftest
+ *
+ * Return: status code
+ */
+static int do_efi_selftest(void)
+{
+ struct efi_loaded_image_obj *image_obj;
+ struct efi_loaded_image *loaded_image_info;
+ efi_status_t ret;
+
+ ret = bootefi_test_prepare(&image_obj, &loaded_image_info,
+ "\\selftest", "efi_selftest");
+ if (ret != EFI_SUCCESS)
+ return CMD_RET_FAILURE;
+
+ /* Execute the test */
+ ret = EFI_CALL(efi_selftest(&image_obj->header, &systab));
+ bootefi_run_finish(image_obj, loaded_image_info);
+
+ return ret != EFI_SUCCESS;
+}
+#endif /* CONFIG_CMD_BOOTEFI_SELFTEST */
+
+/**
+ * do_bootefi() - execute `bootefi` command
+ *
+ * @cmdtp: table entry describing command
+ * @flag: bitmap indicating how the command was invoked
+ * @argc: number of arguments
+ * @argv: command line arguments
+ * Return: status code
+ */
+static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ efi_status_t ret;
+
+ if (argc < 2)
+ return CMD_RET_USAGE;
+
+ /* Initialize EFI drivers */
+ ret = efi_init_obj_list();
+ if (ret != EFI_SUCCESS) {
+ printf("Error: Cannot initialize UEFI sub-system, r = %lu\n",
+ ret & ~EFI_ERROR_MASK);
+ return CMD_RET_FAILURE;
}
- printf("## Starting EFI application at %08lx ...\n", addr);
- r = do_bootefi_exec((void *)addr, (void*)fdt_addr);
- printf("## Application terminated, r = %lu\n",
- r & ~EFI_ERROR_MASK);
+ ret = efi_install_fdt(argc > 2 ? argv[2] : NULL);
+ if (ret == EFI_INVALID_PARAMETER)
+ return CMD_RET_USAGE;
+ else if (ret != EFI_SUCCESS)
+ return CMD_RET_FAILURE;
+
+ if (!strcmp(argv[1], "bootmgr"))
+ return do_efibootmgr();
+#ifdef CONFIG_CMD_BOOTEFI_SELFTEST
+ else if (!strcmp(argv[1], "selftest"))
+ return do_efi_selftest();
+#endif
- if (r != EFI_SUCCESS)
- return 1;
- else
- return 0;
+ return do_bootefi_image(argv[1]);
}
#ifdef CONFIG_SYS_LONGHELP
" If specified, the device tree located at <fdt address> gets\n"
" exposed as EFI configuration table.\n"
#ifdef CONFIG_CMD_BOOTEFI_HELLO
- "hello\n"
- " - boot a sample Hello World application stored within U-Boot"
+ "bootefi hello\n"
+ " - boot a sample Hello World application stored within U-Boot\n"
#endif
- ;
+#ifdef CONFIG_CMD_BOOTEFI_SELFTEST
+ "bootefi selftest [fdt address]\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 address]\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_help_text
);
+/**
+ * efi_set_bootdev() - set boot device
+ *
+ * This function is called when a file is loaded, e.g. via the 'load' command.
+ * We use the path to this file to inform the UEFI binary about the boot device.
+ *
+ * @dev: device, e.g. "MMC"
+ * @devnr: number of the device, e.g. "1:2"
+ * @path: path to file loaded
+ */
void efi_set_bootdev(const char *dev, const char *devnr, const char *path)
{
- __maybe_unused struct blk_desc *desc;
- char devname[32] = { 0 }; /* dp->str is u16[32] long */
- char *colon, *s;
-
-#if defined(CONFIG_BLK) || CONFIG_IS_ENABLED(ISO_PARTITION)
- desc = blk_get_dev(dev, simple_strtol(devnr, NULL, 10));
-#endif
-
-#ifdef CONFIG_BLK
- if (desc) {
- snprintf(devname, sizeof(devname), "%s", desc->bdev->name);
- } else
-#endif
-
- {
- /* Assemble the condensed device name we use in efi_disk.c */
- snprintf(devname, sizeof(devname), "%s%s", dev, devnr);
- }
-
- colon = strchr(devname, ':');
-
-#if CONFIG_IS_ENABLED(ISO_PARTITION)
- /* For ISOs we create partition block devices */
- if (desc && (desc->type != DEV_TYPE_UNKNOWN) &&
- (desc->part_type == PART_TYPE_ISO)) {
- if (!colon)
- snprintf(devname, sizeof(devname), "%s:1", devname);
-
- colon = NULL;
- }
-#endif
-
- if (colon)
- *colon = '\0';
-
- /* Patch bootefi_device_path to the target device */
- memset(bootefi_device_path[0].str, 0, sizeof(bootefi_device_path[0].str));
- ascii2unicode(bootefi_device_path[0].str, devname);
-
- /* Patch bootefi_image_path to the target file path */
- memset(bootefi_image_path[0].str, 0, sizeof(bootefi_image_path[0].str));
- if (strcmp(dev, "Net")) {
- /* Add leading / to fs paths, because they're absolute */
- snprintf(devname, sizeof(devname), "/%s", path);
+ struct efi_device_path *device, *image;
+ efi_status_t ret;
+
+ /* efi_set_bootdev is typically called repeatedly, recover memory */
+ efi_free_pool(bootefi_device_path);
+ efi_free_pool(bootefi_image_path);
+
+ ret = efi_dp_from_name(dev, devnr, path, &device, &image);
+ if (ret == EFI_SUCCESS) {
+ bootefi_device_path = device;
+ if (image) {
+ /* FIXME: image should not contain device */
+ struct efi_device_path *image_tmp = image;
+
+ efi_dp_split_file_path(image, &device, &image);
+ efi_free_pool(image_tmp);
+ }
+ bootefi_image_path = image;
} else {
- snprintf(devname, sizeof(devname), "%s", path);
+ bootefi_device_path = NULL;
+ bootefi_image_path = NULL;
}
- /* DOS style file path: */
- s = devname;
- while ((s = strchr(s, '/')))
- *s++ = '\\';
- ascii2unicode(bootefi_image_path[0].str, devname);
}