[U-Boot] [PATCH v2 1/1] efi_selftest: LoadImage from file device path
Heinrich Schuchardt
xypron.glpk at gmx.de
Thu Feb 7 20:39:00 UTC 2019
Provide a unit test that calls LoadImage() with a file device path and
executes the application via StartImage().
Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
---
v2
correct a comment
---
lib/efi_selftest/Makefile | 3 +
lib/efi_selftest/efi_selftest_loadimage.c | 529 ++++++++++++++++++++++
2 files changed, 532 insertions(+)
create mode 100644 lib/efi_selftest/efi_selftest_loadimage.c
diff --git a/lib/efi_selftest/Makefile b/lib/efi_selftest/Makefile
index 779f549940..2194dc7e33 100644
--- a/lib/efi_selftest/Makefile
+++ b/lib/efi_selftest/Makefile
@@ -51,6 +51,7 @@ endif
ifeq ($(CONFIG_SANDBOX)$(CONFIG_CPU_V7M)$(CONFIG_X86_64),)
obj-y += \
+efi_selftest_loadimage.o \
efi_selftest_startimage_exit.o \
efi_selftest_startimage_return.o
@@ -68,6 +69,8 @@ $(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_loadimage.o: $(obj)/efi_miniapp_file_image_exit.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
diff --git a/lib/efi_selftest/efi_selftest_loadimage.c b/lib/efi_selftest/efi_selftest_loadimage.c
new file mode 100644
index 0000000000..7369714281
--- /dev/null
+++ b/lib/efi_selftest/efi_selftest_loadimage.c
@@ -0,0 +1,529 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * efi_selftest_loadimage
+ *
+ * Copyright (c) 2019 Heinrich Schuchardt <xypron.glpk at gmx.de>
+ *
+ * This test checks the LoadImage and StartImage boot service.
+ *
+ * The efi_selftest_miniapp_exit.efi application is loaded via a file device
+ * path 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
+
+#define FILE_NAME L"app.efi"
+#define VOLUME_NAME L"EfiDisk"
+
+static struct efi_boot_services *boottime;
+static efi_handle_t handle_image;
+static efi_handle_t handle_volume;
+
+static const efi_guid_t guid_device_path = DEVICE_PATH_GUID;
+static const efi_guid_t guid_simple_file_system_protocol =
+ EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID;
+static const efi_guid_t guid_file_info = EFI_FILE_INFO_GUID;
+static const efi_guid_t guid_file_system_info = EFI_FILE_SYSTEM_INFO_GUID;
+
+/* 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[];
+};
+
+/* File info including file name */
+struct file_info {
+ struct efi_file_info info;
+ u16 file_name[sizeof(FILE_NAME)];
+};
+
+/* File system info including volume name */
+struct file_system_info {
+ struct efi_file_system_info info;
+ u16 file_name[sizeof(VOLUME_NAME)];
+};
+
+/* Compressed file image */
+static struct compressed_file_image img = EFI_ST_DISK_IMG;
+
+/* Pointer to decompressed file image */
+static u8 *image;
+
+/* File info */
+static struct file_info priv_file_info = {
+ {
+ .size = sizeof(struct file_info),
+ .attribute = EFI_FILE_READ_ONLY,
+ },
+ FILE_NAME,
+};
+
+/* Pointer to file info */
+struct efi_file_info *file_info = &priv_file_info.info;
+
+/* Volume device path */
+static struct {
+ struct efi_device_path_vendor vendor;
+ struct efi_device_path end;
+} __packed dp_volume = {
+ .vendor = {
+ .dp = {
+ .type = DEVICE_PATH_TYPE_HARDWARE_DEVICE,
+ .sub_type = DEVICE_PATH_SUB_TYPE_VENDOR,
+ .length = sizeof(struct efi_device_path_vendor),
+ },
+ .guid = EFI_GUID(0x4f9a0ebf, 0xa179, 0x88a6, 0x25, 0x68,
+ 0x10, 0x72, 0xb1, 0x93, 0x51, 0x71),
+ },
+ .end = {
+ .type = DEVICE_PATH_TYPE_END,
+ .sub_type = DEVICE_PATH_SUB_TYPE_END,
+ .length = sizeof(struct efi_device_path),
+ }
+};
+
+/* File device path */
+static struct {
+ struct efi_device_path_vendor vendor;
+ struct efi_device_path path;
+ u16 file[sizeof(FILE_NAME)];
+ struct efi_device_path end;
+} __packed dp_file = {
+ .vendor = {
+ .dp = {
+ .type = DEVICE_PATH_TYPE_HARDWARE_DEVICE,
+ .sub_type = DEVICE_PATH_SUB_TYPE_VENDOR,
+ .length = sizeof(struct efi_device_path_vendor),
+ },
+ .guid = EFI_GUID(0x4f9a0ebf, 0xa179, 0x88a6, 0x25, 0x68,
+ 0x10, 0x72, 0xb1, 0x93, 0x51, 0x71),
+ },
+ .path = {
+ .type = DEVICE_PATH_TYPE_MEDIA_DEVICE,
+ .sub_type = DEVICE_PATH_SUB_TYPE_FILE_PATH,
+ .length = sizeof(struct efi_device_path) + sizeof(dp_file.file),
+ },
+ .file = FILE_NAME,
+ .end = {
+ .type = DEVICE_PATH_TYPE_END,
+ .sub_type = DEVICE_PATH_SUB_TYPE_END,
+ .length = sizeof(struct efi_device_path),
+ }
+};
+
+/* File system info */
+static struct file_system_info priv_file_system_info = {
+ {
+ .size = sizeof(struct file_system_info),
+ .read_only = true,
+ .volume_size = 0x100000,
+ .free_space = 0x0,
+ .block_size = 0x200,
+ },
+ VOLUME_NAME
+};
+
+/* Pointer to file system info */
+static struct efi_file_system_info *file_system_info =
+ &priv_file_system_info.info;
+
+/* Forward definitions of file and file system functions */
+static efi_status_t EFIAPI open_volume
+ (struct efi_simple_file_system_protocol *this,
+ struct efi_file_handle **root);
+
+static efi_status_t EFIAPI open
+ (struct efi_file_handle *this,
+ struct efi_file_handle **new_handle,
+ u16 *file_name, u64 open_mode, u64 attributes);
+
+static efi_status_t EFIAPI close(struct efi_file_handle *this);
+
+static efi_status_t EFIAPI delete(struct efi_file_handle *this);
+
+static efi_status_t EFIAPI read
+ (struct efi_file_handle *this, efi_uintn_t *buffer_size, void *buffer);
+
+static efi_status_t EFIAPI write
+ (struct efi_file_handle *this, efi_uintn_t *buffer_size, void *buffer);
+
+static efi_status_t EFIAPI getpos(struct efi_file_handle *this, u64 *pos);
+
+static efi_status_t EFIAPI setpos(struct efi_file_handle *this, u64 pos);
+
+static efi_status_t EFIAPI getinfo
+ (struct efi_file_handle *this, const efi_guid_t *info_type,
+ efi_uintn_t *buffer_size, void *buffer);
+
+static efi_status_t EFIAPI setinfo
+ (struct efi_file_handle *this, const efi_guid_t *info_type,
+ efi_uintn_t buffer_size, void *buffer);
+
+static efi_status_t EFIAPI flush(struct efi_file_handle *this);
+
+/* Internal information about status of file system */
+static struct {
+ /* Difference of volume open count minus volume close count */
+ int volume_open_count;
+ /* Difference of file open count minus file close count */
+ int file_open_count;
+ /* File size */
+ u64 file_size;
+ /* Current position in file */
+ u64 file_pos;
+} priv;
+
+/* EFI_FILE_PROTOCOL for file */
+static struct efi_file_handle file = {
+ .rev = 0x00010000,
+ .open = open,
+ .close = close,
+ .delete = delete,
+ .read = read,
+ .write = write,
+ .getpos = getpos,
+ .setpos = setpos,
+ .getinfo = getinfo,
+ .setinfo = setinfo,
+ .flush = flush,
+};
+
+/* EFI_FILE_PROTOCOL for root directory */
+static struct efi_file_handle volume = {
+ .rev = 0x00010000,
+ .open = open,
+ .close = close,
+ .delete = delete,
+ .read = read,
+ .write = write,
+ .getpos = getpos,
+ .setpos = setpos,
+ .getinfo = getinfo,
+ .setinfo = setinfo,
+ .flush = flush,
+};
+
+/* EFI_SIMPLE_FILE_SYSTEM_PROTOCOL of the block device */
+struct efi_simple_file_system_protocol file_system = {
+ .rev = 0x00010000,
+ .open_volume = open_volume,
+};
+
+static efi_status_t EFIAPI open_volume
+ (struct efi_simple_file_system_protocol *this,
+ struct efi_file_handle **root)
+{
+ if (this != &file_system || !root)
+ return EFI_INVALID_PARAMETER;
+
+ *root = &volume;
+ priv.volume_open_count++;
+
+ return EFI_SUCCESS;
+}
+
+static efi_status_t EFIAPI open
+ (struct efi_file_handle *this,
+ struct efi_file_handle **new_handle,
+ u16 *file_name, u64 open_mode, u64 attributes)
+{
+ if (this != &volume)
+ return EFI_INVALID_PARAMETER;
+
+ *new_handle = &file;
+ priv.file_pos = 0;
+ priv.file_open_count++;
+
+ return EFI_SUCCESS;
+}
+
+static efi_status_t EFIAPI close(struct efi_file_handle *this)
+{
+ if (this == &file)
+ priv.file_open_count--;
+ else if (this == &volume)
+ priv.volume_open_count--;
+ else
+ return EFI_INVALID_PARAMETER;
+
+ return EFI_SUCCESS;
+}
+
+static efi_status_t EFIAPI delete(struct efi_file_handle *this)
+{
+ if (this != &file)
+ return EFI_INVALID_PARAMETER;
+
+ return EFI_UNSUPPORTED;
+}
+
+static efi_status_t EFIAPI read
+ (struct efi_file_handle *this, efi_uintn_t *buffer_size, void *buffer)
+{
+ if (this != &file)
+ return EFI_INVALID_PARAMETER;
+
+ if (priv.file_pos >= img.length)
+ *buffer_size = 0;
+ else if (priv.file_pos + *buffer_size > img.length)
+ *buffer_size = img.length - priv.file_pos;
+
+ boottime->copy_mem(buffer, &image[priv.file_pos], *buffer_size);
+ priv.file_pos += *buffer_size;
+
+ return EFI_SUCCESS;
+}
+
+static efi_status_t EFIAPI write
+ (struct efi_file_handle *this, efi_uintn_t *buffer_size, void *buffer)
+{
+ if (this != &file)
+ return EFI_INVALID_PARAMETER;
+
+ return EFI_UNSUPPORTED;
+}
+
+static efi_status_t EFIAPI getpos(struct efi_file_handle *this, u64 *pos)
+{
+ if (this != &file)
+ return EFI_INVALID_PARAMETER;
+
+ *pos = priv.file_pos;
+
+ return EFI_SUCCESS;
+}
+
+static efi_status_t EFIAPI setpos(struct efi_file_handle *this, u64 pos)
+{
+ if (this != &file)
+ return EFI_INVALID_PARAMETER;
+
+ priv.file_pos = pos;
+
+ return EFI_SUCCESS;
+}
+
+static efi_status_t EFIAPI getinfo
+ (struct efi_file_handle *this, const efi_guid_t *info_type,
+ efi_uintn_t *buffer_size, void *buffer)
+{
+ if (this == &file) {
+ if (efi_st_memcmp(info_type, &guid_file_info,
+ sizeof(efi_guid_t)))
+ return EFI_INVALID_PARAMETER;
+ if (*buffer_size >= sizeof(struct file_info)) {
+ boottime->copy_mem(buffer, file_info,
+ sizeof(struct file_info));
+ } else {
+ *buffer_size = sizeof(struct file_info);
+ return EFI_BUFFER_TOO_SMALL;
+ }
+ } else if (this == &volume) {
+ if (efi_st_memcmp(info_type, &guid_file_system_info,
+ sizeof(efi_guid_t)))
+ return EFI_INVALID_PARAMETER;
+ if (*buffer_size >= sizeof(struct file_system_info)) {
+ boottime->copy_mem(buffer, file_system_info,
+ sizeof(struct file_system_info));
+ } else {
+ *buffer_size = sizeof(struct file_system_info);
+ return EFI_BUFFER_TOO_SMALL;
+ }
+ } else {
+ return EFI_INVALID_PARAMETER;
+ }
+ return EFI_SUCCESS;
+}
+
+static efi_status_t EFIAPI setinfo
+ (struct efi_file_handle *this, const efi_guid_t *info_type,
+ efi_uintn_t buffer_size, void *buffer)
+{
+ if (this != &file)
+ return EFI_INVALID_PARAMETER;
+
+ return EFI_UNSUPPORTED;
+}
+
+static efi_status_t EFIAPI flush(struct efi_file_handle *this)
+{
+ if (this != &file)
+ return EFI_INVALID_PARAMETER;
+
+ return EFI_UNSUPPORTED;
+}
+
+/*
+ * 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;
+ priv.file_size = img.length;
+ file_info->file_size = img.length;
+ return ret;
+}
+
+/*
+ * Setup unit test.
+ *
+ * Decompress application image and provide a handle for the in memory block
+ * device.
+ *
+ * @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)
+{
+ efi_status_t ret;
+
+ handle_image = handle;
+ boottime = systable->boottime;
+
+ /* Load the application image into memory */
+ decompress(&image);
+
+ ret = boottime->install_protocol_interface
+ (&handle_volume, &guid_device_path, EFI_NATIVE_INTERFACE,
+ &dp_volume);
+ if (ret != EFI_SUCCESS) {
+ efi_st_error("Failed to install device path\n");
+ return EFI_ST_FAILURE;
+ }
+ ret = boottime->install_protocol_interface
+ (&handle_volume, &guid_simple_file_system_protocol,
+ EFI_NATIVE_INTERFACE, &file_system);
+ if (ret != EFI_SUCCESS) {
+ efi_st_error("Failed to install simple file system protocol\n");
+ return EFI_ST_FAILURE;
+ }
+
+ return EFI_ST_SUCCESS;
+}
+
+/*
+ * Tear down unit test.
+ *
+ * Uninstall protocols and free memory.
+ *
+ * @return: EFI_ST_SUCCESS for success
+ */
+static int teardown(void)
+{
+ efi_status_t ret = EFI_ST_SUCCESS;
+
+ if (handle_volume) {
+ ret = boottime->uninstall_protocol_interface
+ (handle_volume, &guid_simple_file_system_protocol,
+ &file_system);
+ if (ret != EFI_SUCCESS) {
+ efi_st_error
+ ("Failed to uninstall simple file system protocol\n");
+ return EFI_ST_FAILURE;
+ }
+ ret = boottime->uninstall_protocol_interface
+ (handle_volume, &guid_device_path, &dp_volume);
+ if (ret != EFI_SUCCESS) {
+ efi_st_error
+ ("Failed to uninstall device path protocol\n");
+ return EFI_ST_FAILURE;
+ }
+ }
+
+ if (image) {
+ ret = efi_free_pool(image);
+ if (ret != EFI_SUCCESS) {
+ efi_st_error("Failed to free image\n");
+ return EFI_ST_FAILURE;
+ }
+ }
+ return ret;
+}
+
+/*
+ * 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, handle_image, &dp_file.vendor.dp,
+ NULL, 0, &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;
+ }
+
+ if (priv.file_open_count != 0) {
+ efi_st_error("File open count = %d, expected 0\n",
+ priv.file_open_count);
+ return EFI_ST_FAILURE;
+ }
+ if (priv.volume_open_count != 0) {
+ efi_st_error("Volume open count = %d, expected 0\n",
+ priv.volume_open_count);
+ return EFI_ST_FAILURE;
+ }
+
+ return EFI_ST_SUCCESS;
+}
+
+EFI_UNIT_TEST(loadimage) = {
+ .name = "load image from file",
+ .phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
+ .setup = setup,
+ .execute = execute,
+ .teardown = teardown,
+};
--
2.20.1
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