The functions in bootefi are very long because they mix high-level code and control with the low-level implementation. To help with this, create functions which handle preparing for running the test and cleaning up afterwards.
Also shorten the awfully long variable names here.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v14: - Go back to the horrible long variable names
Changes in v13: - Rebase to efi/efi-next
Changes in v12: - Rename image to image_prot
Changes in v11: None Changes in v9: - Add comments to bootefi_test_prepare() about the memset()s
Changes in v7: None Changes in v5: - Drop call to efi_init_obj_list() which is now done in do_bootefi()
Changes in v4: None Changes in v3: - Add new patch to split out test init/uninit into functions
cmd/bootefi.c | 81 +++++++++++++++++++++++++++++++++++++++++---------- 1 file changed, 65 insertions(+), 16 deletions(-)
diff --git a/cmd/bootefi.c b/cmd/bootefi.c index 3e37805ea13..b633e956c23 100644 --- a/cmd/bootefi.c +++ b/cmd/bootefi.c @@ -453,6 +453,67 @@ exit: return ret; }
+#ifdef CONFIG_CMD_BOOTEFI_SELFTEST +/** + * bootefi_test_prepare() - prepare to run an EFI test + * + * This sets things up so we can call EFI functions. This involves preparing + * the 'gd' pointer and setting up the load ed image data structures. + * + * @image_objp: loaded_image_infop: Pointer to a struct which will hold the + * loaded image object. This struct will be inited by this function before + * use. + * @loaded_image_infop: Pointer to a struct which will hold the loaded image + * info. This struct will be inited by this function before use. + * @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 + * @return 0 if OK, -ve on error + */ +static efi_status_t bootefi_test_prepare( + struct efi_loaded_image_obj **image_objp, + struct efi_loaded_image **loaded_image_infop, + const char *path, + ulong test_func) +{ + efi_status_t r; + + /* Construct a dummy device path */ + bootefi_device_path = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE, + (uintptr_t)test_func, + (uintptr_t)test_func); + bootefi_image_path = efi_dp_from_file(NULL, 0, path); + r = efi_setup_loaded_image(bootefi_device_path, bootefi_image_path, + image_objp, loaded_image_infop); + if (r) + return r; + /* + * 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(*loaded_image_infop, "efi_selftest"); + + return 0; +} + +/** + * bootefi_test_finish() - finish up after running an EFI test + * + * @image_obj: Pointer to a struct which holds the loaded image object + * @loaded_image_info: Pointer to a struct which holds the loaded image info + */ +static void bootefi_test_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); +} +#endif /* CONFIG_CMD_BOOTEFI_SELFTEST */ + static int do_bootefi_bootmgr_exec(void) { struct efi_device_path *device_path, *file_path; @@ -528,26 +589,14 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) struct efi_loaded_image_obj *image_obj; struct efi_loaded_image *loaded_image_info;
- /* 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"); - - r = efi_setup_loaded_image(bootefi_device_path, - bootefi_image_path, &image_obj, - &loaded_image_info); - if (r != EFI_SUCCESS) + if (bootefi_test_prepare(&image_obj, &loaded_image_info, + "\selftest", + (uintptr_t)&efi_selftest)) return CMD_RET_FAILURE;
- efi_save_gd(); - /* Transfer environment variable efi_selftest as load options */ - set_load_options(loaded_image_info, "efi_selftest"); /* Execute the test */ r = efi_selftest(&image_obj->header, &systab); - efi_restore_gd(); - free(loaded_image_info->load_options); - efi_delete_handle(&image_obj->header); + bootefi_test_finish(image_obj, loaded_image_info); return r != EFI_SUCCESS; } else #endif