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556a12654a
The GetImageInfo function definitions for the FIT images and raw images are the same. Use a common function for the both the Firmware Management Protocol(FMP) instances for raw and FIT images. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
419 lines
12 KiB
C
419 lines
12 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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__weak void set_dfu_alt_info(char *interface, char *devstr)
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{
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env_set("dfu_alt_info", update_info.dfu_string);
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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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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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fw_array = update_info.images;
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*descriptor_count = num_image_type_guids;
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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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/**
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* efi_firmware_capsule_authenticate - authenticate the capsule if enabled
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* @p_image: Pointer to new image
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* @p_image_size: Pointer to size of new image
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*
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* Authenticate the capsule if authentication is enabled.
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* The image pointer and the image size are updated in case of success.
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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 efi_firmware_capsule_authenticate(const void **p_image,
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efi_uintn_t *p_image_size)
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{
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const void *image = *p_image;
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efi_uintn_t image_size = *p_image_size;
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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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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 status;
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} else if (status != EFI_SUCCESS) {
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return status;
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}
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debug("Capsule authentication successful\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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*p_image = image;
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*p_image_size = image_size;
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return EFI_SUCCESS;
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}
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/**
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* efi_firmware_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_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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#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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/**
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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_status_t status;
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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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status = efi_firmware_capsule_authenticate(&image, &image_size);
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if (status != EFI_SUCCESS)
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return EFI_EXIT(status);
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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_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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/**
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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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efi_status_t status;
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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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status = efi_firmware_capsule_authenticate(&image, &image_size);
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if (status != EFI_SUCCESS)
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return EFI_EXIT(status);
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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_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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