This pair of tests checks the StartImage boot service.

Each test loads an EFI application into memory and starts it. One returns by calling the Exit boot service. The other returns directly.

The tests are not built on x86_64 because the relocation code for the efi binary cannot be created.

Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- This patch was originally in a patch series. But the first patch was already accepted by Alex.

v4 Use EFI_ST_FAILURE if an error occurs (instead of EFI_INCOMPATIBLE_VERSION). v3 Supply two separate unit tests covering that the application either returns by calling the Exit service or with a simple return. v2 Do not build test on x86_64. --- arch/arm/lib/Makefile | 1 + lib/efi_selftest/.gitignore | 2 + lib/efi_selftest/Makefile | 35 +++++ lib/efi_selftest/efi_selftest_miniapp_exit.c | 37 ++++++ lib/efi_selftest/efi_selftest_miniapp_return.c | 32 +++++ lib/efi_selftest/efi_selftest_startimage_exit.c | 149 ++++++++++++++++++++++ lib/efi_selftest/efi_selftest_startimage_return.c | 149 ++++++++++++++++++++++ 7 files changed, 405 insertions(+) create mode 100644 lib/efi_selftest/.gitignore create mode 100644 lib/efi_selftest/efi_selftest_miniapp_exit.c create mode 100644 lib/efi_selftest/efi_selftest_miniapp_return.c create mode 100644 lib/efi_selftest/efi_selftest_startimage_exit.c create mode 100644 lib/efi_selftest/efi_selftest_startimage_return.c

diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile index abffa10c85..876024fc15 100644 --- a/arch/arm/lib/Makefile +++ b/arch/arm/lib/Makefile @@ -112,4 +112,5 @@ CFLAGS_$(EFI_RELOC) := $(CFLAGS_EFI) CFLAGS_REMOVE_$(EFI_RELOC) := $(CFLAGS_NON_EFI)

extra-$(CONFIG_CMD_BOOTEFI_HELLO_COMPILE) += $(EFI_CRT0) $(EFI_RELOC) +extra-$(CONFIG_CMD_BOOTEFI_SELFTEST) += $(EFI_CRT0) $(EFI_RELOC) extra-$(CONFIG_EFI) += $(EFI_CRT0) $(EFI_RELOC) diff --git a/lib/efi_selftest/.gitignore b/lib/efi_selftest/.gitignore new file mode 100644 index 0000000000..c527e464e5 --- /dev/null +++ b/lib/efi_selftest/.gitignore @@ -0,0 +1,2 @@ +efi_miniapp_file_image.h +*.efi diff --git a/lib/efi_selftest/Makefile b/lib/efi_selftest/Makefile index 20f614d6ba..90246f7827 100644 --- a/lib/efi_selftest/Makefile +++ b/lib/efi_selftest/Makefile @@ -7,6 +7,9 @@ # This file only gets included with CONFIG_EFI_LOADER set, so all # object inclusion implicitly depends on it

+CFLAGS_efi_selftest_miniapp.o := $(CFLAGS_EFI) -Os -ffreestanding +CFLAGS_REMOVE_efi_selftest_miniapp.o := $(CFLAGS_NON_EFI) -Os + obj-$(CONFIG_CMD_BOOTEFI_SELFTEST) += \ efi_selftest.o \ efi_selftest_controllers.o \ @@ -25,3 +28,35 @@ efi_selftest_watchdog.o ifeq ($(CONFIG_BLK)$(CONFIG_PARTITIONS),yy) obj-$(CONFIG_CMD_BOOTEFI_SELFTEST) += efi_selftest_block_device.o endif + +# TODO: As of v2018.01 the relocation code for the EFI application cannot +# be built on x86_64. +ifeq ($(CONFIG_X86_64),) + +ifneq ($(CONFIG_CMD_BOOTEFI_SELFTEST),) + +obj-y += \ +efi_selftest_startimage_exit.o \ +efi_selftest_startimage_return.o + +targets += \ +efi_miniapp_file_image_exit.h \ +efi_miniapp_file_image_return.h \ +efi_selftest_miniapp_exit.efi \ +efi_selftest_miniapp_return.efi + +$(obj)/efi_miniapp_file_image_exit.h: $(obj)/efi_selftest_miniapp_exit.efi + $(obj)/../../tools/file2include $(obj)/efi_selftest_miniapp_exit.efi > \ + $(obj)/efi_miniapp_file_image_exit.h + +$(obj)/efi_miniapp_file_image_return.h: $(obj)/efi_selftest_miniapp_return.efi + $(obj)/../../tools/file2include $(obj)/efi_selftest_miniapp_return.efi > \ + $(obj)/efi_miniapp_file_image_return.h + +$(obj)/efi_selftest_startimage_exit.o: $(obj)/efi_miniapp_file_image_exit.h + +$(obj)/efi_selftest_startimage_return.o: $(obj)/efi_miniapp_file_image_return.h + +endif + +endif diff --git a/lib/efi_selftest/efi_selftest_miniapp_exit.c b/lib/efi_selftest/efi_selftest_miniapp_exit.c new file mode 100644 index 0000000000..590c948a1c --- /dev/null +++ b/lib/efi_selftest/efi_selftest_miniapp_exit.c @@ -0,0 +1,37 @@ +/* + * efi_selftest_miniapp_exit + * + * Copyright (c) 2018 Heinrich Schuchardt + * + * SPDX-License-Identifier: GPL-2.0+ + * + * This EFI application is run by the StartImage selftest. + * It uses the Exit boot service to return. + */ + +#include <common.h> +#include <efi_api.h> + +/* + * Entry point of the EFI application. + * + * @handle handle of the loaded image + * @systable system table + * @return status code + */ +efi_status_t EFIAPI efi_main(efi_handle_t handle, + struct efi_system_table *systable) +{ + struct efi_simple_text_output_protocol *con_out = systable->con_out; + + con_out->output_string(con_out, L"EFI application calling Exit"); + + /* The return value is checked by the calling test */ + systable->boottime->exit(handle, EFI_UNSUPPORTED, 0, NULL); + + /* + * This statement should not be reached. + * To enable testing use a different return value. + */ + return EFI_SUCCESS; +} diff --git a/lib/efi_selftest/efi_selftest_miniapp_return.c b/lib/efi_selftest/efi_selftest_miniapp_return.c new file mode 100644 index 0000000000..e5d3979b03 --- /dev/null +++ b/lib/efi_selftest/efi_selftest_miniapp_return.c @@ -0,0 +1,32 @@ +/* + * efi_selftest_miniapp_return + * + * Copyright (c) 2018 Heinrich Schuchardt + * + * SPDX-License-Identifier: GPL-2.0+ + * + * This EFI application is run by the StartImage selftest. + * It returns directly without calling the Exit boot service. + */ + +#include <common.h> +#include <efi_api.h> + +/* + * Entry point of the EFI application. + * + * @handle handle of the loaded image + * @systable system table + * @return status code + */ +efi_status_t EFIAPI efi_main(efi_handle_t handle, + struct efi_system_table *systable) +{ + struct efi_simple_text_output_protocol *con_out = systable->con_out; + + con_out->output_string(con_out, + L"EFI application returning w/o calling Exit"); + + /* The return value is checked by the calling test */ + return EFI_INCOMPATIBLE_VERSION; +} diff --git a/lib/efi_selftest/efi_selftest_startimage_exit.c b/lib/efi_selftest/efi_selftest_startimage_exit.c new file mode 100644 index 0000000000..0809690e97 --- /dev/null +++ b/lib/efi_selftest/efi_selftest_startimage_exit.c @@ -0,0 +1,149 @@ +/* + * efi_selftest_start_image + * + * Copyright (c) 2018 Heinrich Schuchardt xypron.glpk@gmx.de + * + * SPDX-License-Identifier: GPL-2.0+ + * + * This test checks the StartImage boot service. + * The efi_selftest_miniapp_exit.efi application is loaded into memory + * and started. + */ + +#include <efi_selftest.h> +/* Include containing the miniapp.efi application */ +#include "efi_miniapp_file_image_exit.h" + +/* Block size of compressed disk image */ +#define COMPRESSED_DISK_IMAGE_BLOCK_SIZE 8 + +/* Binary logarithm of the block size */ +#define LB_BLOCK_SIZE 9 + +static efi_handle_t image_handle; +static struct efi_boot_services *boottime; + +/* One 8 byte block of the compressed disk image */ +struct line { + size_t addr; + char *line; +}; + +/* Compressed file image */ +struct compressed_file_image { + size_t length; + struct line lines[]; +}; + +static struct compressed_file_image img = EFI_ST_DISK_IMG; + +/* Decompressed file image */ +static u8 *image; + +/* + * Decompress the disk image. + * + * @image decompressed disk image + * @return status code + */ +static efi_status_t decompress(u8 **image) +{ + u8 *buf; + size_t i; + size_t addr; + size_t len; + efi_status_t ret; + + ret = boottime->allocate_pool(EFI_LOADER_DATA, img.length, + (void **)&buf); + if (ret != EFI_SUCCESS) { + efi_st_error("Out of memory\n"); + return ret; + } + boottime->set_mem(buf, img.length, 0); + + for (i = 0; ; ++i) { + if (!img.lines[i].line) + break; + addr = img.lines[i].addr; + len = COMPRESSED_DISK_IMAGE_BLOCK_SIZE; + if (addr + len > img.length) + len = img.length - addr; + boottime->copy_mem(buf + addr, img.lines[i].line, len); + } + *image = buf; + return ret; +} + +/* + * Setup unit test. + * + * @handle: handle of the loaded image + * @systable: system table + * @return: EFI_ST_SUCCESS for success + */ +static int setup(const efi_handle_t handle, + const struct efi_system_table *systable) +{ + image_handle = handle; + boottime = systable->boottime; + + /* Load the application image into memory */ + decompress(&image); + + return EFI_ST_SUCCESS; +} + +/* + * Tear down unit test. + * + * @return: EFI_ST_SUCCESS for success + */ +static int teardown(void) +{ + efi_status_t r = EFI_ST_SUCCESS; + + if (image) { + r = efi_free_pool(image); + if (r != EFI_SUCCESS) { + efi_st_error("Failed to free image\n"); + return EFI_ST_FAILURE; + } + } + return r; +} + +/* + * Execute unit test. + * + * Load and start the application image. + * + * @return: EFI_ST_SUCCESS for success + */ +static int execute(void) +{ + efi_status_t ret; + efi_handle_t handle; + + ret = boottime->load_image(false, image_handle, NULL, image, + img.length, &handle); + if (ret != EFI_SUCCESS) { + efi_st_error("Failed to load image\n"); + return EFI_ST_FAILURE; + } + ret = boottime->start_image(handle, NULL, NULL); + if (ret != EFI_UNSUPPORTED) { + efi_st_error("Wrong return value from application\n"); + return EFI_ST_FAILURE; + } + + return EFI_ST_SUCCESS; +} + +EFI_UNIT_TEST(startimage_exit) = { + .name = "start image exit", + .phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT, + .setup = setup, + .execute = execute, + .teardown = teardown, +}; diff --git a/lib/efi_selftest/efi_selftest_startimage_return.c b/lib/efi_selftest/efi_selftest_startimage_return.c new file mode 100644 index 0000000000..2209911457 --- /dev/null +++ b/lib/efi_selftest/efi_selftest_startimage_return.c @@ -0,0 +1,149 @@ +/* + * efi_selftest_start_image + * + * Copyright (c) 2018 Heinrich Schuchardt xypron.glpk@gmx.de + * + * SPDX-License-Identifier: GPL-2.0+ + * + * This test checks the StartImage boot service. + * The efi_selftest_miniapp_return.efi application is loaded into memory + * and started. + */ + +#include <efi_selftest.h> +/* Include containing the miniapp.efi application */ +#include "efi_miniapp_file_image_return.h" + +/* Block size of compressed disk image */ +#define COMPRESSED_DISK_IMAGE_BLOCK_SIZE 8 + +/* Binary logarithm of the block size */ +#define LB_BLOCK_SIZE 9 + +static efi_handle_t image_handle; +static struct efi_boot_services *boottime; + +/* One 8 byte block of the compressed disk image */ +struct line { + size_t addr; + char *line; +}; + +/* Compressed file image */ +struct compressed_file_image { + size_t length; + struct line lines[]; +}; + +static struct compressed_file_image img = EFI_ST_DISK_IMG; + +/* Decompressed file image */ +static u8 *image; + +/* + * Decompress the disk image. + * + * @image decompressed disk image + * @return status code + */ +static efi_status_t decompress(u8 **image) +{ + u8 *buf; + size_t i; + size_t addr; + size_t len; + efi_status_t ret; + + ret = boottime->allocate_pool(EFI_LOADER_DATA, img.length, + (void **)&buf); + if (ret != EFI_SUCCESS) { + efi_st_error("Out of memory\n"); + return ret; + } + boottime->set_mem(buf, img.length, 0); + + for (i = 0; ; ++i) { + if (!img.lines[i].line) + break; + addr = img.lines[i].addr; + len = COMPRESSED_DISK_IMAGE_BLOCK_SIZE; + if (addr + len > img.length) + len = img.length - addr; + boottime->copy_mem(buf + addr, img.lines[i].line, len); + } + *image = buf; + return ret; +} + +/* + * Setup unit test. + * + * @handle: handle of the loaded image + * @systable: system table + * @return: EFI_ST_SUCCESS for success + */ +static int setup(const efi_handle_t handle, + const struct efi_system_table *systable) +{ + image_handle = handle; + boottime = systable->boottime; + + /* Load the application image into memory */ + decompress(&image); + + return EFI_ST_SUCCESS; +} + +/* + * Tear down unit test. + * + * @return: EFI_ST_SUCCESS for success + */ +static int teardown(void) +{ + efi_status_t r = EFI_ST_SUCCESS; + + if (image) { + r = efi_free_pool(image); + if (r != EFI_SUCCESS) { + efi_st_error("Failed to free image\n"); + return EFI_ST_FAILURE; + } + } + return r; +} + +/* + * Execute unit test. + * + * Load and start the application image. + * + * @return: EFI_ST_SUCCESS for success + */ +static int execute(void) +{ + efi_status_t ret; + efi_handle_t handle; + + ret = boottime->load_image(false, image_handle, NULL, image, + img.length, &handle); + if (ret != EFI_SUCCESS) { + efi_st_error("Failed to load image\n"); + return EFI_ST_FAILURE; + } + ret = boottime->start_image(handle, NULL, NULL); + if (ret != EFI_INCOMPATIBLE_VERSION) { + efi_st_error("Wrong return value from application\n"); + return EFI_ST_FAILURE; + } + + return EFI_ST_SUCCESS; +} + +EFI_UNIT_TEST(startimage) = { + .name = "start image return", + .phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT, + .setup = setup, + .execute = execute, + .teardown = teardown, +};