u-boot/lib/efi_selftest/efi_selftest_load_file.c

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// SPDX-License-Identifier: GPL-2.0+
/*
* efi_selftest_load_file
*
* Copyright (c) 2020 Heinrich Schuchardt <xypron.glpk@gmx.de>
*
* This test checks the handling of the LOAD_FILE and the LOAD_FILE2 protocol
* by the LoadImage() service.
*/
#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
#define GUID_VENDOR \
EFI_GUID(0xdbca4c98, 0x6cb0, 0x694d, \
0x08, 0x72, 0x81, 0x9c, 0x65, 0xfc, 0xbb, 0xd1)
#define GUID_VENDOR2 \
EFI_GUID(0xdbca4c98, 0x6cb0, 0x694d, \
0x08, 0x72, 0x81, 0x9c, 0x65, 0xfc, 0xbb, 0xd2)
#define FILE_NAME_SIZE 16
static const efi_guid_t efi_st_guid_load_file_protocol =
EFI_LOAD_FILE_PROTOCOL_GUID;
static const efi_guid_t efi_st_guid_load_file2_protocol =
EFI_LOAD_FILE2_PROTOCOL_GUID;
static const efi_guid_t efi_st_guid_device_path =
EFI_DEVICE_PATH_PROTOCOL_GUID;
static efi_handle_t image_handle;
static struct efi_boot_services *boottime;
static efi_handle_t handle_lf;
static efi_handle_t handle_lf2;
/* 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;
static int load_file_call_count;
static int load_file2_call_count;
/* Decompressed file image */
static u8 *image;
static struct {
struct efi_device_path_vendor v;
struct efi_device_path d;
} dp_lf_prot = {
{
{
DEVICE_PATH_TYPE_HARDWARE_DEVICE,
DEVICE_PATH_SUB_TYPE_VENDOR,
sizeof(struct efi_device_path_vendor),
},
GUID_VENDOR,
},
{
DEVICE_PATH_TYPE_END,
DEVICE_PATH_SUB_TYPE_END,
sizeof(struct efi_device_path),
},
};
static struct {
struct efi_device_path_vendor v;
struct efi_device_path_file_path f;
u16 file_name[FILE_NAME_SIZE];
struct efi_device_path e;
} dp_lf_file = {
{
{
DEVICE_PATH_TYPE_HARDWARE_DEVICE,
DEVICE_PATH_SUB_TYPE_VENDOR,
sizeof(struct efi_device_path_vendor),
},
GUID_VENDOR,
},
{
{
DEVICE_PATH_TYPE_MEDIA_DEVICE,
DEVICE_PATH_SUB_TYPE_FILE_PATH,
sizeof(struct efi_device_path_file_path) +
FILE_NAME_SIZE * sizeof(u16),
}
},
u"\\lf.efi",
{
DEVICE_PATH_TYPE_END,
DEVICE_PATH_SUB_TYPE_END,
sizeof(struct efi_device_path),
},
};
struct efi_device_path *dp_lf_file_remainder = &dp_lf_file.f.dp;
static struct {
struct efi_device_path_vendor v;
struct efi_device_path d;
} dp_lf2_prot = {
{
{
DEVICE_PATH_TYPE_HARDWARE_DEVICE,
DEVICE_PATH_SUB_TYPE_VENDOR,
sizeof(struct efi_device_path_vendor),
},
GUID_VENDOR2,
},
{
DEVICE_PATH_TYPE_END,
DEVICE_PATH_SUB_TYPE_END,
sizeof(struct efi_device_path),
},
};
static struct {
struct efi_device_path_vendor v;
struct efi_device_path_file_path f;
u16 file_name[FILE_NAME_SIZE];
struct efi_device_path e;
} dp_lf2_file = {
{
{
DEVICE_PATH_TYPE_HARDWARE_DEVICE,
DEVICE_PATH_SUB_TYPE_VENDOR,
sizeof(struct efi_device_path_vendor),
},
GUID_VENDOR2,
},
{
{
DEVICE_PATH_TYPE_MEDIA_DEVICE,
DEVICE_PATH_SUB_TYPE_FILE_PATH,
sizeof(struct efi_device_path_file_path) +
FILE_NAME_SIZE * sizeof(u16),
}
},
u"\\lf2.efi",
{
DEVICE_PATH_TYPE_END,
DEVICE_PATH_SUB_TYPE_END,
sizeof(struct efi_device_path),
},
};
struct efi_device_path *dp_lf2_file_remainder = &dp_lf2_file.f.dp;
/*
* 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;
}
/*
* load_file() - LoadFile() service of a EFI_LOAD_FILE_PROTOCOL
*
* @this: instance of EFI_LOAD_FILE_PROTOCOL
* @file_path: remaining device path
* @boot_policy: true if called by boot manager
* @buffer_size: (required) buffer size
* @buffer: buffer to which the file is to be loaded
*/
efi_status_t EFIAPI load_file(struct efi_load_file_protocol *this,
struct efi_device_path *file_path,
bool boot_policy,
efi_uintn_t *buffer_size,
void *buffer)
{
++load_file_call_count;
if (memcmp(file_path, dp_lf_file_remainder,
sizeof(struct efi_device_path_file_path) +
FILE_NAME_SIZE * sizeof(u16) +
sizeof(struct efi_device_path))) {
efi_st_error("Wrong remaining device path\n");
return EFI_NOT_FOUND;
}
if (this->load_file != load_file) {
efi_st_error("wrong this\n");
return EFI_INVALID_PARAMETER;
}
if (*buffer_size < img.length) {
*buffer_size = img.length;
return EFI_BUFFER_TOO_SMALL;
}
memcpy(buffer, image, img.length);
*buffer_size = img.length;
return EFI_SUCCESS;
}
/*
* load_file2() - LoadFile() service of a EFI_LOAD_FILE2_PROTOCOL
*
* @this: instance of EFI_LOAD_FILE2_PROTOCOL
* @file_path: remaining device path
* @boot_policy: true if called by boot manager
* @buffer_size: (required) buffer size
* @buffer: buffer to which the file is to be loaded
*/
efi_status_t EFIAPI load_file2(struct efi_load_file_protocol *this,
struct efi_device_path *file_path,
bool boot_policy,
efi_uintn_t *buffer_size,
void *buffer)
{
++load_file2_call_count;
if (memcmp(file_path, dp_lf2_file_remainder,
sizeof(struct efi_device_path_file_path) +
FILE_NAME_SIZE * sizeof(u16) +
sizeof(struct efi_device_path))) {
efi_st_error("Wrong remaining device path\n");
return EFI_NOT_FOUND;
}
if (this->load_file != load_file2) {
efi_st_error("wrong this\n");
return EFI_INVALID_PARAMETER;
}
if (boot_policy) {
efi_st_error("LOAD_FILE2 called with boot_policy = true");
return EFI_INVALID_PARAMETER;
}
if (*buffer_size < img.length) {
*buffer_size = img.length;
return EFI_BUFFER_TOO_SMALL;
}
memcpy(buffer, image, img.length);
*buffer_size = img.length;
return EFI_SUCCESS;
}
static struct efi_load_file_protocol lf_prot = {load_file};
static struct efi_load_file_protocol lf2_prot = {load_file2};
/*
* Setup unit test.
*
* Install an EFI_LOAD_FILE_PROTOCOL and an EFI_LOAD_FILE2_PROTOCOL.
*
* @handle: handle of the loaded image
* @systable: system table
* Return: EFI_ST_SUCCESS for success
*/
static int efi_st_load_file_setup(const efi_handle_t handle,
const struct efi_system_table *systable)
{
efi_status_t ret;
image_handle = handle;
boottime = systable->boottime;
/* Load the application image into memory */
decompress(&image);
ret = boottime->install_multiple_protocol_interfaces(
&handle_lf,
&efi_st_guid_device_path,
&dp_lf_prot,
&efi_st_guid_load_file_protocol,
&lf_prot,
NULL);
if (ret != EFI_SUCCESS) {
efi_st_error("InstallMultipleProtocolInterfaces failed\n");
return EFI_ST_FAILURE;
}
ret = boottime->install_multiple_protocol_interfaces(
&handle_lf2,
&efi_st_guid_device_path,
&dp_lf2_prot,
&efi_st_guid_load_file2_protocol,
&lf2_prot,
NULL);
if (ret != EFI_SUCCESS) {
efi_st_error("InstallMultipleProtocolInterfaces failed\n");
return EFI_ST_FAILURE;
}
return EFI_ST_SUCCESS;
}
/*
* Tear down unit test.
*
* Return: EFI_ST_SUCCESS for success
*/
static int efi_st_load_file_teardown(void)
{
efi_status_t ret = EFI_ST_SUCCESS;
if (handle_lf) {
ret = boottime->uninstall_multiple_protocol_interfaces(
handle_lf,
&efi_st_guid_device_path,
&dp_lf_prot,
&efi_st_guid_load_file_protocol,
&lf_prot,
NULL);
if (ret != EFI_SUCCESS) {
efi_st_error(
"UninstallMultipleProtocolInterfaces failed\n");
return EFI_ST_FAILURE;
}
}
if (handle_lf2) {
ret = boottime->uninstall_multiple_protocol_interfaces(
handle_lf2,
&efi_st_guid_device_path,
&dp_lf2_prot,
&efi_st_guid_load_file2_protocol,
&lf2_prot,
NULL);
if (ret != EFI_SUCCESS) {
efi_st_error(
"UninstallMultipleProtocolInterfaces failed\n");
return EFI_ST_FAILURE;
}
}
if (image) {
ret = boottime->free_pool(image);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to free image\n");
return EFI_ST_FAILURE;
}
}
return ret;
}
/*
* Execute unit test.
*
* Try loading an image via the EFI_LOAD_FILE_PROTOCOL and the
* EFI_LOAD_FILE2_PROTOCOL. Finally execute the image.
*
* Return: EFI_ST_SUCCESS for success
*/
static int efi_st_load_file_execute(void)
{
efi_status_t ret;
efi_handle_t handle;
efi_uintn_t exit_data_size = 0;
u16 *exit_data = NULL;
u16 expected_text[] = EFI_ST_SUCCESS_STR;
load_file_call_count = 0;
load_file2_call_count = 0;
handle = NULL;
ret = boottime->load_image(true, image_handle, &dp_lf_file.v.dp, NULL,
0, &handle);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to load image\n");
return EFI_ST_FAILURE;
}
if (load_file2_call_count || !load_file_call_count) {
efi_st_error("Wrong image loaded\n");
return EFI_ST_FAILURE;
}
ret = boottime->unload_image(handle);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to unload image\n");
return EFI_ST_FAILURE;
}
load_file_call_count = 0;
load_file2_call_count = 0;
handle = NULL;
ret = boottime->load_image(false, image_handle, &dp_lf_file.v.dp, NULL,
0, &handle);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to load image\n");
return EFI_ST_FAILURE;
}
if (load_file2_call_count || !load_file_call_count) {
efi_st_error("Wrong image loaded\n");
return EFI_ST_FAILURE;
}
ret = boottime->unload_image(handle);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to unload image\n");
return EFI_ST_FAILURE;
}
ret = boottime->load_image(true, image_handle, &dp_lf2_file.v.dp, NULL,
0, &handle);
if (ret != EFI_NOT_FOUND) {
efi_st_error(
"Boot manager should not use LOAD_FILE2_PROTOCOL\n");
return EFI_ST_FAILURE;
}
load_file_call_count = 0;
load_file2_call_count = 0;
handle = NULL;
ret = boottime->load_image(false, image_handle, &dp_lf2_file.v.dp, NULL,
0, &handle);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to load image\n");
return EFI_ST_FAILURE;
}
if (!load_file2_call_count || load_file_call_count) {
efi_st_error("Wrong image loaded\n");
return EFI_ST_FAILURE;
}
ret = boottime->start_image(handle, &exit_data_size, &exit_data);
if (ret != EFI_UNSUPPORTED) {
efi_st_error("Wrong return value from application\n");
return EFI_ST_FAILURE;
}
if (!exit_data || exit_data_size != sizeof(expected_text) ||
memcmp(exit_data, expected_text, sizeof(expected_text))) {
efi_st_error("Incorrect exit data\n");
return EFI_ST_FAILURE;
}
ret = boottime->free_pool(exit_data);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to free exit data\n");
return EFI_ST_FAILURE;
}
return EFI_ST_SUCCESS;
}
EFI_UNIT_TEST(load_file_protocol) = {
.name = "load file protocol",
.phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
.setup = efi_st_load_file_setup,
.execute = efi_st_load_file_execute,
.teardown = efi_st_load_file_teardown,
};