]> git.ipfire.org Git - people/ms/u-boot.git/blobdiff - cmd/bootefi.c
Merge tag 'signed-efi-next' of git://github.com/agraf/u-boot
[people/ms/u-boot.git] / cmd / bootefi.c
index b7087e3da874e7f14745dc63dfbf62458bf80795..51213c0293c307b843b4a1da819d9141632b9d20 100644 (file)
@@ -6,10 +6,12 @@
  *  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>
@@ -30,6 +32,9 @@ 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();
@@ -43,12 +48,39 @@ static void efi_init_obj_list(void)
 #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);
@@ -74,11 +106,11 @@ 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(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_BOOT_SERVICES_DATA, fdt_pages,
+               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;
@@ -92,10 +124,10 @@ static void *copy_fdt(void *fdt)
        return new_fdt;
 }
 
-static ulong efi_do_enter(void *image_handle,
-                         struct efi_system_table *st,
-                         asmlinkage ulong (*entry)(void *image_handle,
-                               struct efi_system_table *st))
+static efi_status_t efi_do_enter(
+                       efi_handle_t image_handle, struct efi_system_table *st,
+                       asmlinkage ulong (*entry)(efi_handle_t image_handle,
+                                                 struct efi_system_table *st))
 {
        efi_status_t ret = EFI_LOAD_ERROR;
 
@@ -106,9 +138,9 @@ static ulong efi_do_enter(void *image_handle,
 }
 
 #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(asmlinkage ulong (*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();
@@ -121,20 +153,35 @@ static unsigned long efi_run_in_el2(asmlinkage ulong (*entry)(
  * 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, 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;
 
-       ulong (*entry)(void *image_handle, struct efi_system_table *st)
+       ulong (*entry)(efi_handle_t 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 };
 
+       /*
+        * 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();
@@ -174,6 +221,8 @@ static unsigned long do_bootefi_exec(void *efi, void *fdt,
                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) {
@@ -181,6 +230,14 @@ static unsigned long do_bootefi_exec(void *efi, void *fdt,
                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");
@@ -200,7 +257,8 @@ static unsigned long do_bootefi_exec(void *efi, void *fdt,
                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);
 
@@ -209,7 +267,7 @@ static unsigned long do_bootefi_exec(void *efi, void *fdt,
        }
 #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*: */
@@ -254,7 +312,7 @@ 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;
+       efi_status_t r;
 
        if (argc < 2)
                return CMD_RET_USAGE;
@@ -275,6 +333,12 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
                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);
@@ -287,7 +351,14 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
                /* 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")) {
@@ -333,6 +404,8 @@ static char bootefi_help_text[] =
 #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
        "bootmgr [fdt addr]\n"
        "  - load and boot EFI payload based on BootOrder/BootXXXX variables.\n"
@@ -367,6 +440,8 @@ void efi_set_bootdev(const char *dev, const char *devnr, const char *path)
                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);