* SPDX-License-Identifier: GPL-2.0+
*/
+#include <charset.h>
#include <common.h>
#include <command.h>
-#include <dm/device.h>
+#include <dm.h>
#include <efi_loader.h>
+#include <efi_selftest.h>
#include <errno.h>
#include <libfdt.h>
#include <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_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();
+}
+
/*
- * 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.
+ * @loaded_image_info: the image
+ * @env_var: name of the environment variable
*/
-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]),
- }
-};
-
-static efi_status_t bootefi_open_dp(void *handle, efi_guid_t *protocol,
- void **protocol_interface, void *agent_handle,
- void *controller_handle, uint32_t attributes)
+static void set_load_options(struct efi_loaded_image *loaded_image_info,
+ const char *env_var)
{
- *protocol_interface = bootefi_device_path;
- return EFI_SUCCESS;
+ 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;
}
-/* 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,
- .open = &efi_return_handle,
- },
- {
- /*
- * When asking for the device path interface, return
- * bootefi_device_path
- */
- .guid = &efi_guid_device_path,
- .open = &bootefi_open_dp,
- },
- },
-};
-
-/* 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,
- .open = &bootefi_open_dp,
- }
- },
-};
-
static void *copy_fdt(void *fdt)
{
u64 fdt_size = fdt_totalsize(fdt);
}
/* Give us at least 4kb breathing room */
- fdt_size = ALIGN(fdt_size + 4096, 4096);
+ 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_BOOT_SERVICES_DATA, fdt_pages,
+ 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(4096, fdt_size);
+ 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 unsigned long do_bootefi_exec(void *efi, void *fdt)
+static efi_status_t do_bootefi_exec(void *efi, void *fdt,
+ struct efi_device_path *device_path,
+ struct efi_device_path *image_path)
{
- ulong (*entry)(void *image_handle, struct efi_system_table *st);
+ 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
}
/* Link to it in the efi tables */
- systab.tables[0].guid = EFI_FDT_GUID;
- systab.tables[0].table = fdt;
- systab.nr_tables = 1;
+ efi_install_configuration_table(&fdt_guid, fdt);
/* And reserve the space in the memory map */
fdt_start = ((ulong)fdt) & ~EFI_PAGE_MASK;
EFI_BOOT_SERVICES_DATA, true);
} else {
printf("WARNING: Invalid device tree, expect boot to fail\n");
- systab.nr_tables = 0;
+ 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)
- return -ENOENT;
-
- /* Initialize and populate EFI object list */
- INIT_LIST_HEAD(&efi_obj_list);
- list_add_tail(&loaded_image_info_obj.link, &efi_obj_list);
- list_add_tail(&bootefi_device_obj.link, &efi_obj_list);
-#ifdef CONFIG_PARTITIONS
- efi_disk_register();
-#endif
-#ifdef CONFIG_LCD
- efi_gop_register();
-#endif
-#ifdef CONFIG_NET
- void *nethandle = loaded_image_info.device_handle;
- efi_net_register(&nethandle);
+ if (!entry) {
+ ret = -ENOENT;
+ goto exit;
+ }
- if (!memcmp(bootefi_device_path[0].str, "N\0e\0t", 6))
- loaded_image_info.device_handle = nethandle;
-#endif
+ 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;
+ }
- /* Initialize EFI runtime services */
- efi_reset_system_init();
- efi_get_time_init();
+ /* 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)) {
- efi_status_t status = loaded_image_info.exit_status;
- return status == EFI_SUCCESS ? 0 : -EINVAL;
+ 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 entry(&loaded_image_info, &systab);
+ 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;
- int r = 0;
+ efi_status_t r;
if (argc < 2)
return CMD_RET_USAGE;
- saddr = argv[1];
+#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;
- addr = simple_strtoul(saddr, NULL, 16);
+ if (argc > 2)
+ fdt_addr = simple_strtoul(argv[2], NULL, 16);
- if (argc > 2) {
- sfdt = argv[2];
- fdt_addr = simple_strtoul(sfdt, NULL, 16);
- }
+ return do_bootefi_bootmgr_exec(fdt_addr);
+ } else {
+ saddr = argv[1];
- printf("## Starting EFI application at 0x%08lx ...\n", addr);
- r = do_bootefi_exec((void *)addr, (void*)fdt_addr);
- printf("## Application terminated, r = %d\n", r);
+ 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);
+ }
+ }
- if (r != 0)
- r = 1;
+ 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);
- return r;
+ if (r != EFI_SUCCESS)
+ return 1;
+ else
+ return 0;
}
#ifdef CONFIG_SYS_LONGHELP
"<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
bootefi_help_text
);
-void efi_set_bootdev(const char *dev, const char *devnr, const char *path)
+static int parse_partnum(const char *devnr)
{
- __maybe_unused struct blk_desc *desc;
- char devname[32] = { 0 }; /* dp->str is u16[32] long */
- char *colon;
-
-#if defined(CONFIG_BLK) || defined(CONFIG_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);
+ const char *str = strchr(devnr, ':');
+ if (str) {
+ str++;
+ return simple_strtoul(str, NULL, 16);
}
+ return 0;
+}
- colon = strchr(devname, ':');
+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;
-#ifdef CONFIG_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);
+ if (strcmp(dev, "Net")) {
+ struct blk_desc *desc;
+ int part;
- colon = NULL;
- }
-#endif
+ desc = blk_get_dev(dev, simple_strtol(devnr, NULL, 10));
+ if (!desc)
+ return;
+ part = parse_partnum(devnr);
- if (colon)
- *colon = '\0';
+ bootefi_device_path = efi_dp_from_part(desc, part);
+ } else {
+#ifdef CONFIG_NET
+ bootefi_device_path = efi_dp_from_eth();
+#endif
+ }
- /* 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);
+ if (!path)
+ return;
- /* 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);
+ snprintf(filename, sizeof(filename), "/%s", path);
} else {
- snprintf(devname, sizeof(devname), "%s", path);
+ snprintf(filename, sizeof(filename), "%s", path);
}
- ascii2unicode(bootefi_image_path[0].str, devname);
+ /* DOS style file path: */
+ s = filename;
+ while ((s = strchr(s, '/')))
+ *s++ = '\\';
+ bootefi_image_path = efi_dp_from_file(NULL, 0, filename);
}
projects / people / ms / u-boot.git / blobdiff