Add a new bootefi_run_prepare() function which holds common code used to set up U-Boot to run EFI code. Make use of this from the existing bootefi_test_prepare() function, as well as do_bootefi_exec().
Also shorten a few variable names.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v6: None Changes in v5: - Drop call to efi_init_obj_list() which is now done in do_bootefi() - Introduce load_options_path to specifyc U-Boot env var for load_options_path
Changes in v4: - Rebase to master
Changes in v3: - Add patch to create a function to set up for running EFI code
Changes in v2: None
cmd/bootefi.c | 79 ++++++++++++++++++++++++++++----------------------- 1 file changed, 43 insertions(+), 36 deletions(-)
diff --git a/cmd/bootefi.c b/cmd/bootefi.c index ac80074bc4..b9eb04531b 100644 --- a/cmd/bootefi.c +++ b/cmd/bootefi.c @@ -253,6 +253,26 @@ static efi_status_t efi_install_fdt(void *fdt) return ret; }
+static efi_status_t bootefi_run_prepare(struct efi_loaded_image *image, + struct efi_object *obj, + const char *load_options_path, + struct efi_device_path *device_path, + struct efi_device_path *image_path) +{ + efi_setup_loaded_image(image, 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(); + + /* Transfer environment variable as load options */ + set_load_options(image, load_options_path); + + return 0; +} + /* * Load an EFI payload into a newly allocated piece of memory, register all * EFI objects it would want to access and jump to it. @@ -261,8 +281,8 @@ 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_loaded_image image; + struct efi_object obj; struct efi_device_path *memdp = NULL; efi_status_t ret;
@@ -283,19 +303,13 @@ static efi_status_t do_bootefi_exec(void *efi, assert(device_path && image_path); }
- efi_setup_loaded_image(&loaded_image_info, &loaded_image_info_obj, - device_path, image_path); + ret = bootefi_run_prepare(&image, &obj, "bootargs", device_path, + image_path); + if (ret) + return ret;
- /* - * 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(); - - /* 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); + entry = efi_load_pe(efi, &image); if (!entry) { ret = EFI_LOAD_ERROR; goto exit; @@ -303,10 +317,10 @@ static efi_status_t do_bootefi_exec(void *efi,
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->memory_type = image.image_code_type; + mdp->start_address = (uintptr_t)image.image_base; mdp->end_address = mdp->start_address + - loaded_image_info.image_size; + image.image_size; }
/* we don't support much: */ @@ -316,8 +330,8 @@ static efi_status_t do_bootefi_exec(void *efi, /* 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; + if (setjmp(&image.exit_jmp)) { + ret = image.exit_status; goto exit; }
@@ -329,7 +343,7 @@ static efi_status_t do_bootefi_exec(void *efi,
/* Move into EL2 and keep running there */ armv8_switch_to_el2((ulong)entry, - (ulong)&loaded_image_info_obj.handle, + (ulong)&obj.handle, (ulong)&systab, 0, (ulong)efi_run_in_el2, ES_TO_AARCH64);
@@ -338,11 +352,11 @@ static efi_status_t do_bootefi_exec(void *efi, } #endif
- ret = efi_do_enter(loaded_image_info_obj.handle, &systab, entry); + ret = efi_do_enter(obj.handle, &systab, entry);
exit: /* image has returned, loaded-image obj goes *poof*: */ - list_del(&loaded_image_info_obj.link); + list_del(&obj.link);
return ret; } @@ -358,11 +372,13 @@ exit: * @path: File path to the test being run (often just the test name with a * backslash before it * @test_func: Address of the test function that is being run + * @load_options_path: U-Boot environment variable to use as load options * @return 0 if OK, -ve on error */ static efi_status_t bootefi_test_prepare(struct efi_loaded_image *image, struct efi_object *obj, - const char *path, ulong test_func) + const char *path, ulong test_func, + const char *load_options_path) { memset(image, '\0', sizeof(*image)); memset(obj, '\0', sizeof(*obj)); @@ -371,18 +387,8 @@ static efi_status_t bootefi_test_prepare(struct efi_loaded_image *image, (uintptr_t)test_func, (uintptr_t)test_func); bootefi_image_path = efi_dp_from_file(NULL, 0, path); - efi_setup_loaded_image(image, 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(); - - /* Transfer environment variable efi_selftest as load options */ - set_load_options(image, "efi_selftest"); - - return 0; + return bootefi_run_prepare(image, obj, load_options_path, + bootefi_device_path, bootefi_image_path); }
/** @@ -481,7 +487,7 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) int ret;
if (bootefi_test_prepare(&image, &obj, "\test", - (ulong)&efi_test)) + (ulong)&efi_test, "efi_test")) return CMD_RET_FAILURE;
ret = efi_test(&image, &systab); @@ -497,7 +503,8 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) #ifdef CONFIG_CMD_BOOTEFI_SELFTEST if (!strcmp(argv[1], "selftest")) { if (bootefi_test_prepare(&image, &obj, "\selftest", - (uintptr_t)&efi_selftest)) + (uintptr_t)&efi_selftest, + "efi_selftest")) return CMD_RET_FAILURE;
/* Execute the test */