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efi_loader: add firmware management protocol for raw image

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In this commit, a very simple firmware management protocol driver
is implemented. It will take a binary image in a capsule file and
apply the data using dfu backend storage drivers via dfu_write_by_alt()
interface.

So "dfu_alt_info" variable should be properly set to specify a device
and location to be updated. Please read README.dfu.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
This commit is contained in:
AKASHI Takahiro 2020-11-17 09:28:00 +09:00 committed by Heinrich Schuchardt
parent f27c201485
commit bb7e71d33c
6 changed files with 213 additions and 72 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/efi_api.h
View File

@ -1857,6 +1857,10 @@ struct efi_signature_list {
EFI_GUID(0xae13ff2d, 0x9ad4, 0x4e25, 0x9a, 0xc8, \
0x6d, 0x80, 0xb3, 0xb2, 0x21, 0x47)
#define EFI_FIRMWARE_IMAGE_TYPE_UBOOT_RAW_GUID \
EFI_GUID(0xe2bb9c06, 0x70e9, 0x4b14, 0x97, 0xa3, \
0x5a, 0x79, 0x13, 0x17, 0x6e, 0x3f)
#define IMAGE_ATTRIBUTE_IMAGE_UPDATABLE 0x0000000000000001
#define IMAGE_ATTRIBUTE_RESET_REQUIRED 0x0000000000000002
#define IMAGE_ATTRIBUTE_AUTHENTICATION_REQUIRED 0x0000000000000004

1
include/efi_loader.h
View File

@ -817,6 +817,7 @@ void efi_memcpy_runtime(void *dest, const void *src, size_t n);
u16 *efi_create_indexed_name(u16 *buffer, const char *name, unsigned int index);
extern const struct efi_firmware_management_protocol efi_fmp_fit;
extern const struct efi_firmware_management_protocol efi_fmp_raw;
/* Capsule update */
efi_status_t EFIAPI efi_update_capsule(

16
lib/efi_loader/Kconfig
View File

@ -127,6 +127,10 @@ config EFI_CAPSULE_ON_DISK_EARLY
executed as part of U-Boot initialisation so that they will
surely take place whatever is set to distro_bootcmd.
config EFI_CAPSULE_FIRMWARE
bool
default n
config EFI_CAPSULE_FIRMWARE_MANAGEMENT
bool "Capsule: Firmware Management Protocol"
depends on EFI_HAVE_CAPSULE_SUPPORT
@ -141,11 +145,23 @@ config EFI_CAPSULE_FIRMWARE_FIT
depends on FIT
select UPDATE_FIT
select DFU
select EFI_CAPSULE_FIRMWARE
default n
help
Select this option if you want to enable firmware management protocol
driver for FIT image
config EFI_CAPSULE_FIRMWARE_RAW
bool "FMP driver for raw image"
depends on EFI_CAPSULE_FIRMWARE_MANAGEMENT
select DFU
select DFU_WRITE_ALT
select EFI_CAPSULE_FIRMWARE
default n
help
Select this option if you want to enable firmware management protocol
driver for raw image
config EFI_DEVICE_PATH_TO_TEXT
bool "Device path to text protocol"
default y

2
lib/efi_loader/Makefile
View File

@ -24,7 +24,7 @@ obj-$(CONFIG_CMD_BOOTEFI_HELLO) += helloworld_efi.o
obj-y += efi_bootmgr.o
obj-y += efi_boottime.o
obj-$(CONFIG_EFI_HAVE_CAPSULE_SUPPORT) += efi_capsule.o
obj-$(CONFIG_EFI_CAPSULE_FIRMWARE_FIT) += efi_firmware.o
obj-$(CONFIG_EFI_CAPSULE_FIRMWARE) += efi_firmware.o
obj-y += efi_console.o
obj-y += efi_device_path.o
obj-$(CONFIG_EFI_DEVICE_PATH_TO_TEXT) += efi_device_path_to_text.o

8
lib/efi_loader/efi_capsule.c
View File

@ -807,6 +807,14 @@ efi_status_t __weak arch_efi_load_capsule_drivers(void)
&efi_fmp_fit, NULL));
}
if (IS_ENABLED(CONFIG_EFI_CAPSULE_FIRMWARE_RAW)) {
handle = NULL;
ret = EFI_CALL(efi_install_multiple_protocol_interfaces(
&efi_root,
&efi_guid_firmware_management_protocol,
&efi_fmp_raw, NULL));
}
return ret;
}

254
lib/efi_loader/efi_firmware.c
View File

@ -13,16 +13,66 @@
#include <image.h>
#include <linux/list.h>
/*
* This FIRMWARE_MANAGEMENT_PROTOCOL driver provides a firmware update
* method with existing FIT image format, and handles
* - multiple regions of firmware via DFU
* but doesn't support
* - versioning of firmware image
* - package information
*/
const efi_guid_t efi_firmware_image_type_uboot_fit =
EFI_FIRMWARE_IMAGE_TYPE_UBOOT_FIT_GUID;
/* Place holder; not supported */
static
efi_status_t EFIAPI efi_firmware_get_image_unsupported(
struct efi_firmware_management_protocol *this,
u8 image_index,
void *image,
efi_uintn_t *image_size)
{
EFI_ENTRY("%p %d %p %p\n", this, image_index, image, image_size);
return EFI_EXIT(EFI_UNSUPPORTED);
}
/* Place holder; not supported */
static
efi_status_t EFIAPI efi_firmware_check_image_unsupported(
struct efi_firmware_management_protocol *this,
u8 image_index,
const void *image,
efi_uintn_t *image_size,
u32 *image_updatable)
{
EFI_ENTRY("%p %d %p %p %p\n", this, image_index, image, image_size,
image_updatable);
return EFI_EXIT(EFI_UNSUPPORTED);
}
/* Place holder; not supported */
static
efi_status_t EFIAPI efi_firmware_get_package_info_unsupported(
struct efi_firmware_management_protocol *this,
u32 *package_version,
u16 **package_version_name,
u32 *package_version_name_maxlen,
u64 *attributes_supported,
u64 *attributes_setting)
{
EFI_ENTRY("%p %p %p %p %p %p\n", this, package_version,
package_version_name, package_version_name_maxlen,
attributes_supported, attributes_setting);
return EFI_EXIT(EFI_UNSUPPORTED);
}
/* Place holder; not supported */
static
efi_status_t EFIAPI efi_firmware_set_package_info_unsupported(
struct efi_firmware_management_protocol *this,
const void *image,
efi_uintn_t *image_size,
const void *vendor_code,
u32 package_version,
const u16 *package_version_name)
{
EFI_ENTRY("%p %p %p %p %x %p\n", this, image, image_size, vendor_code,
package_version, package_version_name);
return EFI_EXIT(EFI_UNSUPPORTED);
}
/**
* efi_get_dfu_info - return information about the current firmware image
@ -129,6 +179,18 @@ static efi_status_t efi_get_dfu_info(
return EFI_SUCCESS;
}
#ifdef CONFIG_EFI_CAPSULE_FIRMWARE_FIT
/*
* This FIRMWARE_MANAGEMENT_PROTOCOL driver provides a firmware update
* method with existing FIT image format, and handles
* - multiple regions of firmware via DFU
* but doesn't support
* - versioning of firmware image
* - package information
*/
const efi_guid_t efi_firmware_image_type_uboot_fit =
EFI_FIRMWARE_IMAGE_TYPE_UBOOT_FIT_GUID;
/**
* efi_firmware_fit_get_image_info - return information about the current
* firmware image
@ -182,19 +244,6 @@ efi_status_t EFIAPI efi_firmware_fit_get_image_info(
return EFI_EXIT(ret);
}
/* Place holder; not supported */
static
efi_status_t EFIAPI efi_firmware_get_image_unsupported(
struct efi_firmware_management_protocol *this,
u8 image_index,
void *image,
efi_uintn_t *image_size)
{
EFI_ENTRY("%p %d %p %p\n", this, image_index, image, image_size);
return EFI_EXIT(EFI_UNSUPPORTED);
}
/**
* efi_firmware_fit_set_image - update the firmware image
* @this: Protocol instance
@ -233,54 +282,6 @@ efi_status_t EFIAPI efi_firmware_fit_set_image(
return EFI_EXIT(EFI_SUCCESS);
}
/* Place holder; not supported */
static
efi_status_t EFIAPI efi_firmware_check_image_unsupported(
struct efi_firmware_management_protocol *this,
u8 image_index,
const void *image,
efi_uintn_t *image_size,
u32 *image_updatable)
{
EFI_ENTRY("%p %d %p %p %p\n", this, image_index, image, image_size,
image_updatable);
return EFI_EXIT(EFI_UNSUPPORTED);
}
/* Place holder; not supported */
static
efi_status_t EFIAPI efi_firmware_get_package_info_unsupported(
struct efi_firmware_management_protocol *this,
u32 *package_version,
u16 **package_version_name,
u32 *package_version_name_maxlen,
u64 *attributes_supported,
u64 *attributes_setting)
{
EFI_ENTRY("%p %p %p %p %p %p\n", this, package_version,
package_version_name, package_version_name_maxlen,
attributes_supported, attributes_setting);
return EFI_EXIT(EFI_UNSUPPORTED);
}
/* Place holder; not supported */
static
efi_status_t EFIAPI efi_firmware_set_package_info_unsupported(
struct efi_firmware_management_protocol *this,
const void *image,
efi_uintn_t *image_size,
const void *vendor_code,
u32 package_version,
const u16 *package_version_name)
{
EFI_ENTRY("%p %p %p %p %x %p\n", this, image, image_size, vendor_code,
package_version, package_version_name);
return EFI_EXIT(EFI_UNSUPPORTED);
}
const struct efi_firmware_management_protocol efi_fmp_fit = {
.get_image_info = efi_firmware_fit_get_image_info,
.get_image = efi_firmware_get_image_unsupported,
@ -289,3 +290,114 @@ const struct efi_firmware_management_protocol efi_fmp_fit = {
.get_package_info = efi_firmware_get_package_info_unsupported,
.set_package_info = efi_firmware_set_package_info_unsupported,
};
#endif /* CONFIG_EFI_CAPSULE_FIRMWARE_FIT */
#ifdef CONFIG_EFI_CAPSULE_FIRMWARE_RAW
/*
* This FIRMWARE_MANAGEMENT_PROTOCOL driver provides a firmware update
* method with raw data.
*/
const efi_guid_t efi_firmware_image_type_uboot_raw =
EFI_FIRMWARE_IMAGE_TYPE_UBOOT_RAW_GUID;
/**
* efi_firmware_raw_get_image_info - return information about the current
firmware image
* @this: Protocol instance
* @image_info_size: Size of @image_info
* @image_info: Image information
* @descriptor_version: Pointer to version number
* @descriptor_count: Pointer to number of descriptors
* @descriptor_size: Pointer to descriptor size
* package_version: Package version
* package_version_name: Package version's name
*
* Return information bout the current firmware image in @image_info.
* @image_info will consist of a number of descriptors.
* Each descriptor will be created based on "dfu_alt_info" variable.
*
* Return status code
*/
static
efi_status_t EFIAPI efi_firmware_raw_get_image_info(
struct efi_firmware_management_protocol *this,
efi_uintn_t *image_info_size,
struct efi_firmware_image_descriptor *image_info,
u32 *descriptor_version,
u8 *descriptor_count,
efi_uintn_t *descriptor_size,
u32 *package_version,
u16 **package_version_name)
{
efi_status_t ret = EFI_SUCCESS;
EFI_ENTRY("%p %p %p %p %p %p %p %p\n", this,
image_info_size, image_info,
descriptor_version, descriptor_count, descriptor_size,
package_version, package_version_name);
if (!image_info_size)
return EFI_EXIT(EFI_INVALID_PARAMETER);
if (*image_info_size &&
(!image_info || !descriptor_version || !descriptor_count ||
!descriptor_size || !package_version || !package_version_name))
return EFI_EXIT(EFI_INVALID_PARAMETER);
ret = efi_get_dfu_info(image_info_size, image_info,
descriptor_version, descriptor_count,
descriptor_size,
package_version, package_version_name,
&efi_firmware_image_type_uboot_raw);
return EFI_EXIT(ret);
}
/**
* efi_firmware_raw_set_image - update the firmware image
* @this: Protocol instance
* @image_index: Image index number
* @image: New image
* @image_size: Size of new image
* @vendor_code: Vendor-specific update policy
* @progress: Function to report the progress of update
* @abort_reason: Pointer to string of abort reason
*
* Update the firmware to new image, using dfu. The new image should
* be a single raw image.
* @vendor_code, @progress and @abort_reason are not supported.
*
* Return: status code
*/
static
efi_status_t EFIAPI efi_firmware_raw_set_image(
struct efi_firmware_management_protocol *this,
u8 image_index,
const void *image,
efi_uintn_t image_size,
const void *vendor_code,
efi_status_t (*progress)(efi_uintn_t completion),
u16 **abort_reason)
{
EFI_ENTRY("%p %d %p %ld %p %p %p\n", this, image_index, image,
image_size, vendor_code, progress, abort_reason);
if (!image)
return EFI_EXIT(EFI_INVALID_PARAMETER);
if (dfu_write_by_alt(image_index - 1, (void *)image, image_size,
NULL, NULL))
return EFI_EXIT(EFI_DEVICE_ERROR);
return EFI_EXIT(EFI_SUCCESS);
}
const struct efi_firmware_management_protocol efi_fmp_raw = {
.get_image_info = efi_firmware_raw_get_image_info,
.get_image = efi_firmware_get_image_unsupported,
.set_image = efi_firmware_raw_set_image,
.check_image = efi_firmware_check_image_unsupported,
.get_package_info = efi_firmware_get_package_info_unsupported,
.set_package_info = efi_firmware_set_package_info_unsupported,
};
#endif /* CONFIG_EFI_CAPSULE_FIRMWARE_RAW */