mirror of
https://github.com/AsahiLinux/u-boot
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1ea06bc929
Currently, the image descriptor array that has been passed to the GetImageInfo function of the Firmware Management Protocol(FMP) gets populated through the data stored with the dfu framework. The dfu data is not restricted to contain information only of the images updatable through the capsule update mechanism, but it also contains information on other images. The image descriptor array is also parsed by the ESRT generation code, and thus the ESRT table contains entries for other images that are not being handled by the FMP for the capsule updates. Fix this by populating the image descriptor array from the structure initialised in the board file. The other issue fixed is assignment of a separate GUID for all images in the image descriptor array. The UEFI specification mandates that all entries in the ESRT table should have a unique GUID value as part of the FwClass member of the EFI_SYSTEM_RESOURCE_ENTRY. Currently, all images are assigned a single GUID value, either an FIT GUID or a raw image GUID. This is fixed by obtaining the GUID values from the efi_fw_images array defined per platform. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Masami Hiramatsu <masami.hiramatsu@linaro.org>
440 lines
13 KiB
C
440 lines
13 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* EFI Firmware management protocol
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*
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* Copyright (c) 2020 Linaro Limited
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* Author: AKASHI Takahiro
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*/
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#include <common.h>
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#include <charset.h>
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#include <dfu.h>
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#include <efi_loader.h>
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#include <image.h>
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#include <signatures.h>
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#include <linux/list.h>
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#define FMP_PAYLOAD_HDR_SIGNATURE SIGNATURE_32('M', 'S', 'S', '1')
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/**
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* struct fmp_payload_header - EDK2 header for the FMP payload
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*
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* This structure describes the header which is preprended to the
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* FMP payload by the edk2 capsule generation scripts.
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*
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* @signature: Header signature used to identify the header
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* @header_size: Size of the structure
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* @fw_version: Firmware versions used
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* @lowest_supported_version: Lowest supported version
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*/
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struct fmp_payload_header {
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u32 signature;
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u32 header_size;
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u32 fw_version;
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u32 lowest_supported_version;
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};
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/* Place holder; not supported */
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static
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efi_status_t EFIAPI efi_firmware_get_image_unsupported(
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struct efi_firmware_management_protocol *this,
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u8 image_index,
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void *image,
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efi_uintn_t *image_size)
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{
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EFI_ENTRY("%p %d %p %p\n", this, image_index, image, image_size);
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return EFI_EXIT(EFI_UNSUPPORTED);
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}
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/* Place holder; not supported */
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static
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efi_status_t EFIAPI efi_firmware_check_image_unsupported(
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struct efi_firmware_management_protocol *this,
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u8 image_index,
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const void *image,
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efi_uintn_t *image_size,
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u32 *image_updatable)
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{
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EFI_ENTRY("%p %d %p %p %p\n", this, image_index, image, image_size,
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image_updatable);
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return EFI_EXIT(EFI_UNSUPPORTED);
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}
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/* Place holder; not supported */
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static
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efi_status_t EFIAPI efi_firmware_get_package_info_unsupported(
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struct efi_firmware_management_protocol *this,
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u32 *package_version,
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u16 **package_version_name,
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u32 *package_version_name_maxlen,
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u64 *attributes_supported,
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u64 *attributes_setting)
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{
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EFI_ENTRY("%p %p %p %p %p %p\n", this, package_version,
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package_version_name, package_version_name_maxlen,
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attributes_supported, attributes_setting);
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return EFI_EXIT(EFI_UNSUPPORTED);
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}
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/* Place holder; not supported */
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static
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efi_status_t EFIAPI efi_firmware_set_package_info_unsupported(
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struct efi_firmware_management_protocol *this,
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const void *image,
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efi_uintn_t *image_size,
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const void *vendor_code,
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u32 package_version,
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const u16 *package_version_name)
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{
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EFI_ENTRY("%p %p %p %p %x %p\n", this, image, image_size, vendor_code,
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package_version, package_version_name);
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return EFI_EXIT(EFI_UNSUPPORTED);
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}
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/**
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* efi_fill_image_desc_array - populate image descriptor array
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* @image_info_size: Size of @image_info
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* @image_info: Image information
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* @descriptor_version: Pointer to version number
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* @descriptor_count: Image count
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* @descriptor_size: Pointer to descriptor size
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* @package_version: Package version
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* @package_version_name: Package version's name
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*
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* Return information about the current firmware image in @image_info.
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* @image_info will consist of a number of descriptors.
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* Each descriptor will be created based on efi_fw_image array.
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*
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* Return status code
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*/
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static efi_status_t efi_fill_image_desc_array(
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efi_uintn_t *image_info_size,
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struct efi_firmware_image_descriptor *image_info,
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u32 *descriptor_version,
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u8 *descriptor_count,
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efi_uintn_t *descriptor_size,
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u32 *package_version,
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u16 **package_version_name)
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{
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size_t total_size;
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struct efi_fw_image *fw_array;
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int i;
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fw_array = update_info.images;
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*descriptor_count = num_image_type_guids;
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total_size = sizeof(*image_info) * num_image_type_guids;
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if (*image_info_size < total_size) {
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*image_info_size = total_size;
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return EFI_BUFFER_TOO_SMALL;
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}
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*image_info_size = total_size;
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*descriptor_version = EFI_FIRMWARE_IMAGE_DESCRIPTOR_VERSION;
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*descriptor_size = sizeof(*image_info);
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*package_version = 0xffffffff; /* not supported */
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*package_version_name = NULL; /* not supported */
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for (i = 0; i < num_image_type_guids; i++) {
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image_info[i].image_index = fw_array[i].image_index;
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image_info[i].image_type_id = fw_array[i].image_type_id;
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image_info[i].image_id = fw_array[i].image_index;
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image_info[i].image_id_name = fw_array[i].fw_name;
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image_info[i].version = 0; /* not supported */
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image_info[i].version_name = NULL; /* not supported */
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image_info[i].size = 0;
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image_info[i].attributes_supported =
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IMAGE_ATTRIBUTE_IMAGE_UPDATABLE |
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IMAGE_ATTRIBUTE_AUTHENTICATION_REQUIRED;
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image_info[i].attributes_setting =
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IMAGE_ATTRIBUTE_IMAGE_UPDATABLE;
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/* Check if the capsule authentication is enabled */
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if (IS_ENABLED(CONFIG_EFI_CAPSULE_AUTHENTICATE))
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image_info[0].attributes_setting |=
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IMAGE_ATTRIBUTE_AUTHENTICATION_REQUIRED;
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image_info[i].lowest_supported_image_version = 0;
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image_info[i].last_attempt_version = 0;
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image_info[i].last_attempt_status = LAST_ATTEMPT_STATUS_SUCCESS;
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image_info[i].hardware_instance = 1;
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image_info[i].dependencies = NULL;
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}
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return EFI_SUCCESS;
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}
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#ifdef CONFIG_EFI_CAPSULE_FIRMWARE_FIT
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/*
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* This FIRMWARE_MANAGEMENT_PROTOCOL driver provides a firmware update
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* method with existing FIT image format, and handles
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* - multiple regions of firmware via DFU
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* but doesn't support
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* - versioning of firmware image
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* - package information
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*/
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const efi_guid_t efi_firmware_image_type_uboot_fit =
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EFI_FIRMWARE_IMAGE_TYPE_UBOOT_FIT_GUID;
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/**
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* efi_firmware_fit_get_image_info - return information about the current
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* firmware image
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* @this: Protocol instance
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* @image_info_size: Size of @image_info
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* @image_info: Image information
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* @descriptor_version: Pointer to version number
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* @descriptor_count: Pointer to number of descriptors
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* @descriptor_size: Pointer to descriptor size
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* package_version: Package version
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* package_version_name: Package version's name
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*
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* Return information bout the current firmware image in @image_info.
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* @image_info will consist of a number of descriptors.
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* Each descriptor will be created based on "dfu_alt_info" variable.
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*
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* Return status code
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*/
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static
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efi_status_t EFIAPI efi_firmware_fit_get_image_info(
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struct efi_firmware_management_protocol *this,
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efi_uintn_t *image_info_size,
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struct efi_firmware_image_descriptor *image_info,
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u32 *descriptor_version,
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u8 *descriptor_count,
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efi_uintn_t *descriptor_size,
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u32 *package_version,
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u16 **package_version_name)
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{
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efi_status_t ret;
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EFI_ENTRY("%p %p %p %p %p %p %p %p\n", this,
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image_info_size, image_info,
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descriptor_version, descriptor_count, descriptor_size,
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package_version, package_version_name);
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if (!image_info_size)
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return EFI_EXIT(EFI_INVALID_PARAMETER);
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if (*image_info_size &&
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(!image_info || !descriptor_version || !descriptor_count ||
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!descriptor_size || !package_version || !package_version_name))
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return EFI_EXIT(EFI_INVALID_PARAMETER);
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ret = efi_fill_image_desc_array(image_info_size, image_info,
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descriptor_version, descriptor_count,
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descriptor_size, package_version,
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package_version_name);
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return EFI_EXIT(ret);
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}
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/**
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* efi_firmware_fit_set_image - update the firmware image
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* @this: Protocol instance
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* @image_index: Image index number
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* @image: New image
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* @image_size: Size of new image
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* @vendor_code: Vendor-specific update policy
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* @progress: Function to report the progress of update
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* @abort_reason: Pointer to string of abort reason
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*
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* Update the firmware to new image, using dfu. The new image should
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* have FIT image format commonly used in U-Boot.
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* @vendor_code, @progress and @abort_reason are not supported.
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*
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* Return: status code
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*/
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static
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efi_status_t EFIAPI efi_firmware_fit_set_image(
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struct efi_firmware_management_protocol *this,
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u8 image_index,
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const void *image,
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efi_uintn_t image_size,
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const void *vendor_code,
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efi_status_t (*progress)(efi_uintn_t completion),
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u16 **abort_reason)
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{
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EFI_ENTRY("%p %d %p %zu %p %p %p\n", this, image_index, image,
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image_size, vendor_code, progress, abort_reason);
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if (!image || image_index != 1)
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return EFI_EXIT(EFI_INVALID_PARAMETER);
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if (fit_update(image))
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return EFI_EXIT(EFI_DEVICE_ERROR);
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return EFI_EXIT(EFI_SUCCESS);
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}
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const struct efi_firmware_management_protocol efi_fmp_fit = {
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.get_image_info = efi_firmware_fit_get_image_info,
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.get_image = efi_firmware_get_image_unsupported,
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.set_image = efi_firmware_fit_set_image,
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.check_image = efi_firmware_check_image_unsupported,
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.get_package_info = efi_firmware_get_package_info_unsupported,
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.set_package_info = efi_firmware_set_package_info_unsupported,
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};
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#endif /* CONFIG_EFI_CAPSULE_FIRMWARE_FIT */
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#ifdef CONFIG_EFI_CAPSULE_FIRMWARE_RAW
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/*
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* This FIRMWARE_MANAGEMENT_PROTOCOL driver provides a firmware update
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* method with raw data.
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*/
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const efi_guid_t efi_firmware_image_type_uboot_raw =
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EFI_FIRMWARE_IMAGE_TYPE_UBOOT_RAW_GUID;
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/**
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* efi_firmware_raw_get_image_info - return information about the current
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firmware image
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* @this: Protocol instance
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* @image_info_size: Size of @image_info
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* @image_info: Image information
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* @descriptor_version: Pointer to version number
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* @descriptor_count: Pointer to number of descriptors
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* @descriptor_size: Pointer to descriptor size
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* package_version: Package version
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* package_version_name: Package version's name
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*
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* Return information bout the current firmware image in @image_info.
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* @image_info will consist of a number of descriptors.
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* Each descriptor will be created based on "dfu_alt_info" variable.
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*
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* Return status code
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*/
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static
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efi_status_t EFIAPI efi_firmware_raw_get_image_info(
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struct efi_firmware_management_protocol *this,
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efi_uintn_t *image_info_size,
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struct efi_firmware_image_descriptor *image_info,
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u32 *descriptor_version,
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u8 *descriptor_count,
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efi_uintn_t *descriptor_size,
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u32 *package_version,
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u16 **package_version_name)
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{
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efi_status_t ret = EFI_SUCCESS;
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EFI_ENTRY("%p %p %p %p %p %p %p %p\n", this,
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image_info_size, image_info,
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descriptor_version, descriptor_count, descriptor_size,
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package_version, package_version_name);
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if (!image_info_size)
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return EFI_EXIT(EFI_INVALID_PARAMETER);
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if (*image_info_size &&
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(!image_info || !descriptor_version || !descriptor_count ||
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!descriptor_size || !package_version || !package_version_name))
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return EFI_EXIT(EFI_INVALID_PARAMETER);
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ret = efi_fill_image_desc_array(image_info_size, image_info,
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descriptor_version, descriptor_count,
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descriptor_size, package_version,
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package_version_name);
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return EFI_EXIT(ret);
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}
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/**
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* efi_firmware_raw_set_image - update the firmware image
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* @this: Protocol instance
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* @image_index: Image index number
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* @image: New image
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* @image_size: Size of new image
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* @vendor_code: Vendor-specific update policy
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* @progress: Function to report the progress of update
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* @abort_reason: Pointer to string of abort reason
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*
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* Update the firmware to new image, using dfu. The new image should
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* be a single raw image.
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* @vendor_code, @progress and @abort_reason are not supported.
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*
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* Return: status code
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*/
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static
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efi_status_t EFIAPI efi_firmware_raw_set_image(
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struct efi_firmware_management_protocol *this,
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u8 image_index,
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const void *image,
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efi_uintn_t image_size,
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const void *vendor_code,
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efi_status_t (*progress)(efi_uintn_t completion),
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u16 **abort_reason)
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{
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u32 fmp_hdr_signature;
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struct fmp_payload_header *header;
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void *capsule_payload;
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efi_status_t status;
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efi_uintn_t capsule_payload_size;
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EFI_ENTRY("%p %d %p %zu %p %p %p\n", this, image_index, image,
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image_size, vendor_code, progress, abort_reason);
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if (!image)
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return EFI_EXIT(EFI_INVALID_PARAMETER);
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/* Authenticate the capsule if authentication enabled */
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if (IS_ENABLED(CONFIG_EFI_CAPSULE_AUTHENTICATE)) {
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capsule_payload = NULL;
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capsule_payload_size = 0;
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status = efi_capsule_authenticate(image, image_size,
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&capsule_payload,
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&capsule_payload_size);
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if (status == EFI_SECURITY_VIOLATION) {
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printf("Capsule authentication check failed. Aborting update\n");
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return EFI_EXIT(status);
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} else if (status != EFI_SUCCESS) {
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return EFI_EXIT(status);
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}
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debug("Capsule authentication successfull\n");
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image = capsule_payload;
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image_size = capsule_payload_size;
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} else {
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debug("Capsule authentication disabled. ");
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debug("Updating capsule without authenticating.\n");
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}
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fmp_hdr_signature = FMP_PAYLOAD_HDR_SIGNATURE;
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header = (void *)image;
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if (!memcmp(&header->signature, &fmp_hdr_signature,
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sizeof(fmp_hdr_signature))) {
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/*
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* When building the capsule with the scripts in
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* edk2, a FMP header is inserted above the capsule
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* payload. Compensate for this header to get the
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* actual payload that is to be updated.
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*/
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image += header->header_size;
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image_size -= header->header_size;
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}
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if (dfu_write_by_alt(image_index - 1, (void *)image, image_size,
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NULL, NULL))
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return EFI_EXIT(EFI_DEVICE_ERROR);
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return EFI_EXIT(EFI_SUCCESS);
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}
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const struct efi_firmware_management_protocol efi_fmp_raw = {
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.get_image_info = efi_firmware_raw_get_image_info,
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.get_image = efi_firmware_get_image_unsupported,
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.set_image = efi_firmware_raw_set_image,
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.check_image = efi_firmware_check_image_unsupported,
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.get_package_info = efi_firmware_get_package_info_unsupported,
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.set_package_info = efi_firmware_set_package_info_unsupported,
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};
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#endif /* CONFIG_EFI_CAPSULE_FIRMWARE_RAW */
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