+// SPDX-License-Identifier: GPL-2.0+
/*
* 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 <libfdt.h>
-#include <libfdt_env.h>
+#include <linux/libfdt.h>
+#include <linux/libfdt_env.h>
#include <memalign.h>
#include <asm/global_data.h>
#include <asm-generic/sections.h>
+#include <asm-generic/unaligned.h>
#include <linux/linkage.h>
DECLARE_GLOBAL_DATA_PTR;
-static uint8_t efi_obj_list_initalized;
+#define OBJ_LIST_NOT_INITIALIZED 1
+
+static efi_status_t efi_obj_list_initialized = OBJ_LIST_NOT_INITIALIZED;
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_status_t efi_init_obj_list(void)
{
- efi_obj_list_initalized = 1;
+ efi_status_t ret = EFI_SUCCESS;
+
+ /* Initialize once only */
+ if (efi_obj_list_initialized != OBJ_LIST_NOT_INITIALIZED)
+ return efi_obj_list_initialized;
- efi_console_register();
+ /* Initialize EFI driver uclass */
+ ret = efi_driver_init();
+ if (ret != EFI_SUCCESS)
+ goto out;
+
+ ret = efi_console_register();
+ if (ret != EFI_SUCCESS)
+ goto out;
#ifdef CONFIG_PARTITIONS
- efi_disk_register();
+ ret = efi_disk_register();
+ if (ret != EFI_SUCCESS)
+ goto out;
#endif
#if defined(CONFIG_LCD) || defined(CONFIG_DM_VIDEO)
- efi_gop_register();
+ ret = efi_gop_register();
+ if (ret != EFI_SUCCESS)
+ goto out;
#endif
#ifdef CONFIG_NET
- efi_net_register();
+ ret = efi_net_register();
+ if (ret != EFI_SUCCESS)
+ goto out;
+#endif
+#ifdef CONFIG_GENERATE_ACPI_TABLE
+ ret = efi_acpi_register();
+ if (ret != EFI_SUCCESS)
+ goto out;
#endif
#ifdef CONFIG_GENERATE_SMBIOS_TABLE
- efi_smbios_register();
+ ret = efi_smbios_register();
+ if (ret != EFI_SUCCESS)
+ goto out;
#endif
- efi_watchdog_register();
+ ret = efi_watchdog_register();
+ if (ret != EFI_SUCCESS)
+ goto out;
/* Initialize EFI runtime services */
- efi_reset_system_init();
- efi_get_time_init();
+ ret = efi_reset_system_init();
+ if (ret != EFI_SUCCESS)
+ goto out;
+ ret = efi_get_time_init();
+ if (ret != EFI_SUCCESS)
+ goto out;
+
+out:
+ efi_obj_list_initialized = ret;
+ return ret;
+}
+
+/*
+ * Allow unaligned memory access.
+ *
+ * This routine is overridden by architectures providing this feature.
+ */
+void __weak allow_unaligned(void)
+{
+}
+
+/*
+ * 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)
/* 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(EFI_ALLOCATE_MAX_ADDRESS,
+ 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_BOOT_SERVICES_DATA, fdt_pages,
+ if (efi_allocate_pages(EFI_ALLOCATE_MAX_ADDRESS,
+ EFI_RUNTIME_SERVICES_DATA, fdt_pages,
&new_fdt_addr) != EFI_SUCCESS) {
printf("ERROR: Failed to reserve space for FDT\n");
return NULL;
return new_fdt;
}
-static ulong efi_do_enter(void *image_handle,
- struct efi_system_table *st,
- asmlinkage ulong (*entry)(void *image_handle,
+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;
}
#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)
+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();
}
#endif
+/* Carve out DT reserved memory ranges */
+static efi_status_t efi_carve_out_dt_rsv(void *fdt)
+{
+ int nr_rsv, i;
+ uint64_t addr, size, pages;
+
+ 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;
+
+ pages = ALIGN(size, EFI_PAGE_SIZE) >> EFI_PAGE_SHIFT;
+ efi_add_memory_map(addr, pages, EFI_RESERVED_MEMORY_TYPE,
+ false);
+ }
+
+ return EFI_SUCCESS;
+}
+
+static efi_status_t efi_install_fdt(void *fdt)
+{
+ bootm_headers_t img = { 0 };
+ ulong fdt_pages, fdt_size, fdt_start, fdt_end;
+ efi_status_t ret;
+
+ if (fdt_check_header(fdt)) {
+ printf("ERROR: invalid device tree\n");
+ return EFI_INVALID_PARAMETER;
+ }
+
+ /* Prepare fdt for payload */
+ fdt = copy_fdt(fdt);
+ if (!fdt)
+ return EFI_OUT_OF_RESOURCES;
+
+ if (image_setup_libfdt(&img, fdt, 0, NULL)) {
+ printf("ERROR: failed to process device tree\n");
+ return EFI_LOAD_ERROR;
+ }
+
+ if (efi_carve_out_dt_rsv(fdt) != EFI_SUCCESS) {
+ printf("ERROR: failed to carve out memory\n");
+ return EFI_LOAD_ERROR;
+ }
+
+ /* Link to it in the efi tables */
+ ret = efi_install_configuration_table(&efi_guid_fdt, fdt);
+ if (ret != EFI_SUCCESS)
+ return EFI_OUT_OF_RESOURCES;
+
+ /* 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;
+ ret = efi_add_memory_map(fdt_start, fdt_pages,
+ EFI_BOOT_SERVICES_DATA, true);
+ return ret;
+}
+
/*
* 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,
- struct efi_device_path *device_path,
- struct efi_device_path *image_path)
+static efi_status_t do_bootefi_exec(void *efi,
+ 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_object mem_obj = {};
struct efi_device_path *memdp = NULL;
- ulong ret;
+ efi_status_t ret;
- 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 };
+ EFIAPI efi_status_t (*entry)(efi_handle_t image_handle,
+ struct efi_system_table *st);
/*
* Special case for efi payload not loaded from disk, such as
/* actual addresses filled in after efi_load_pe() */
memdp = efi_dp_from_mem(0, 0, 0);
device_path = image_path = memdp;
+ efi_add_handle(&mem_obj);
+
+ ret = efi_add_protocol(mem_obj.handle, &efi_guid_device_path,
+ device_path);
+ if (ret != EFI_SUCCESS)
+ goto exit;
} 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);
*/
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;
+ ret = EFI_LOAD_ERROR;
goto exit;
}
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,
+ armv8_switch_to_el2((ulong)entry,
+ (ulong)&loaded_image_info_obj.handle,
(ulong)&systab, 0, (ulong)efi_run_in_el2,
ES_TO_AARCH64);
}
#endif
- ret = efi_do_enter(&loaded_image_info, &systab, entry);
+ 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);
+ if (mem_obj.handle)
+ list_del(&mem_obj.link);
return ret;
}
-static int do_bootefi_bootmgr_exec(unsigned long fdt_addr)
+static int do_bootefi_bootmgr_exec(void)
{
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
return 1;
printf("## Starting EFI application at %p ...\n", addr);
- r = do_bootefi_exec(addr, (void *)fdt_addr, device_path, file_path);
+ r = do_bootefi_exec(addr, device_path, file_path);
printf("## Application terminated, r = %lu\n",
r & ~EFI_ERROR_MASK);
/* 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;
- unsigned long r;
+ unsigned long addr;
+ char *saddr;
+ efi_status_t r;
+ void *fdt_addr;
+
+ /* Allow unaligned memory access */
+ allow_unaligned();
+
+ /* Initialize EFI drivers */
+ r = efi_init_obj_list();
+ if (r != EFI_SUCCESS) {
+ printf("Error: Cannot set up EFI drivers, r = %lu\n",
+ r & ~EFI_ERROR_MASK);
+ return CMD_RET_FAILURE;
+ }
if (argc < 2)
return CMD_RET_USAGE;
+
+ if (argc > 2) {
+ fdt_addr = (void *)simple_strtoul(argv[2], NULL, 16);
+ if (!fdt_addr && *argv[2] != '0')
+ return CMD_RET_USAGE;
+ /* Install device tree */
+ r = efi_install_fdt(fdt_addr);
+ if (r != EFI_SUCCESS) {
+ printf("ERROR: failed to install device tree\n");
+ return CMD_RET_FAILURE;
+ }
+ } else {
+ /* Remove device tree. EFI_NOT_FOUND can be ignored here */
+ efi_install_configuration_table(&efi_guid_fdt, NULL);
+ printf("WARNING: booting without device tree\n");
+ }
#ifdef CONFIG_CMD_BOOTEFI_HELLO
if (!strcmp(argv[1], "hello")) {
ulong size = __efi_helloworld_end - __efi_helloworld_begin;
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);
* callback entry
*/
efi_save_gd();
- /* Initialize and populate EFI object list */
- if (!efi_obj_list_initalized)
- efi_init_obj_list();
- return efi_selftest(&loaded_image_info, &systab);
+ /* 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);
+ return do_bootefi_bootmgr_exec();
} 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);
+ r = do_bootefi_exec((void *)addr, bootefi_device_path,
+ bootefi_image_path);
printf("## Application terminated, r = %lu\n",
r & ~EFI_ERROR_MASK);
" - boot a sample Hello World application stored within U-Boot\n"
#endif
#ifdef CONFIG_CMD_BOOTEFI_SELFTEST
- "bootefi selftest\n"
+ "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
- "bootmgr [fdt addr]\n"
+ "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"
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 */
if (strcmp(dev, "Net")) {
struct blk_desc *desc;
+ disk_partition_t fs_partition;
int part;
- desc = blk_get_dev(dev, simple_strtol(devnr, NULL, 10));
- part = parse_partnum(devnr);
+ part = blk_get_device_part_str(dev, devnr, &desc, &fs_partition,
+ 1);
+ if (part < 0)
+ return;
bootefi_device_path = efi_dp_from_part(desc, part);
} else {
projects / u-boot / blobdiff