A capsule tagged with the guid, EFI_FIRMWARE_MANAGEMENT_CAPSULE_ID_GUID, is handled as a firmware update object. What efi_update_capsule() basically does is to load any firmware management protocol (or fmp) drivers contained in a capsule, find out an appropriate fmp driver and then invoke its set_image() interface against each binary in a capsule. In this commit, however, loading drivers is not supported.
The result of applying a capsule is set to be stored in "CapsuleXXXX" variable, but its implementation is deferred to a fmp driver.
Signed-off-by: AKASHI Takahiro takahiro.akashi@linaro.org --- include/efi_api.h | 123 +++++++++++++++++++ include/efi_loader.h | 2 + lib/efi_loader/Kconfig | 8 ++ lib/efi_loader/efi_capsule.c | 229 +++++++++++++++++++++++++++++++++++ lib/efi_loader/efi_setup.c | 4 + 5 files changed, 366 insertions(+)
diff --git a/include/efi_api.h b/include/efi_api.h index 7a2a087c60ed..db51c1e0dc9f 100644 --- a/include/efi_api.h +++ b/include/efi_api.h @@ -225,6 +225,10 @@ enum efi_reset_type { EFI_GUID(0xde9f0ec, 0x88b6, 0x428f, 0x97, 0x7a, \ 0x25, 0x8f, 0x1d, 0xe, 0x5e, 0x72)
+#define EFI_FIRMWARE_MANAGEMENT_CAPSULE_ID_GUID \ + EFI_GUID(0x6dcbd5ed, 0xe82d, 0x4c44, 0xbd, 0xa1, \ + 0x71, 0x94, 0x19, 0x9a, 0xd9, 0x2a) + struct efi_capsule_header { efi_guid_t capsule_guid; u32 header_size; @@ -253,6 +257,32 @@ struct efi_memory_range_capsule { struct efi_memory_range memory_ranges[]; } __packed;
+struct efi_firmware_management_capsule_header { + u32 version; + u16 embedded_driver_count; + u16 payload_item_count; + u64 item_offset_list[]; +} __packed; + +struct efi_firmware_management_capsule_image_header { + u32 version; + efi_guid_t update_image_type_id; + u8 update_image_index; + u8 reserved[3]; + u32 update_image_size; + u32 update_vendor_code_size; + u64 update_hardware_instance; +} __packed; + +struct efi_capsule_result_variable_fmp { + u16 version; + u8 payload_index; + u8 update_image_index; + efi_guid_t update_image_type_id; + // u16 capsule_file_name[]; + // u16 capsule_target[]; +} __packed; + #define EFI_RT_SUPPORTED_GET_TIME 0x0001 #define EFI_RT_SUPPORTED_SET_TIME 0x0002 #define EFI_RT_SUPPORTED_GET_WAKEUP_TIME 0x0004 @@ -1808,4 +1838,97 @@ struct efi_signature_list { /* struct efi_signature_data signatures[...][signature_size]; */ } __attribute__((__packed__));
+/* + * Firmware management protocol + */ +#define EFI_FIRMWARE_MANAGEMENT_PROTOCOL_GUID \ + EFI_GUID(0x86c77a67, 0x0b97, 0x4633, 0xa1, 0x87, \ + 0x49, 0x10, 0x4d, 0x06, 0x85, 0xc7) + +#define EFI_IMAGE_ATTRIBUTE_IMAGE_UPDATABLE 0x1 +#define EFI_IMAGE_ATTRIBUTE_RESET_REQUIRED 0x2 +#define EFI_IMAGE_ATTRIBUTE_AUTHENTICATION_REQUIRED 0x4 +#define EFI_IMAGE_ATTRIBUTE_IN_USE 0x8 +#define EFI_IMAGE_ATTRIBUTE_UEFI_IMAGE 0x10 + +#define EFI_IMAGE_COMPATIBILITY_CHECK_SUPPORTED 0x1 +#define EFI_FIRMWARE_IMAGE_DESCRIPTOR_VERSION 4 + +#define EFI_IMAGE_UPDATABLE_VALID 0x1 +#define EFI_IMAGE_UPDATABLE_INVALID 0x2 +#define EFI_IMAGE_UPDATABLE_INVALID_TYPE 0x4 +#define EFI_IMAGE_UPDATABLE_INVALID_OLLD 0x8 +#define EFI_IMAGE_UPDATABLE_VALID_WITH_VENDOR_CODE 0x10 + +#define EFI_PACKAGE_ATTRIBUTE_VERSION_UPDATABLE 0x1 +#define EFI_PACKAGE_ATTRIBUTE_RESET_REQUIRED 0x2 +#define EFI_PACKAGE_ATTRIBUTE_AUTHENTICATION_REQUIRED 0x4 + +typedef struct efi_firmware_image_dependencies { + u8 dependencies[0]; +} efi_fmp_dep_t; + +struct efi_firmware_image_descriptor { + u8 image_index; + efi_guid_t image_type_id; + u64 image_id; + u16 *image_id_name; + u32 version; + u16 *version_name; + efi_uintn_t size; + u64 attributes_supported; + u64 attributes_setting; + u64 compatibilities; + u32 lowest_supported_image_version; + u32 last_attempt_version; + u32 last_attempt_status; + u64 hardware_instance; + efi_fmp_dep_t *dependencies; +}; + +struct efi_firmware_management_protocol { + efi_status_t (EFIAPI *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 (EFIAPI *get_image)( + struct efi_firmware_management_protocol *this, + u8 image_index, + void *image, + efi_uintn_t *image_size); + efi_status_t (EFIAPI *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_status_t (EFIAPI *check_image)( + struct efi_firmware_management_protocol *this, + u8 image_index, + const void *image, + efi_uintn_t *image_size, + u32 *image_updatable); + efi_status_t (EFIAPI *get_package_info)( + 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_status_t (EFIAPI *set_package_info)( + 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); +}; + #endif diff --git a/include/efi_loader.h b/include/efi_loader.h index 7e00bf3b33f3..a6c278dd0336 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -210,6 +210,8 @@ extern const efi_guid_t efi_guid_cert_type_pkcs7; extern const efi_guid_t efi_guid_rng_protocol; /* GUID of capsule update result */ extern const efi_guid_t efi_guid_capsule_report; +/* GUID of firmware management protocol */ +extern const efi_guid_t efi_guid_firmware_management_protocol;
extern unsigned int __efi_runtime_start, __efi_runtime_stop; extern unsigned int __efi_runtime_rel_start, __efi_runtime_rel_stop; diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig index 6e35cbe64c7f..98bbf6d4ca27 100644 --- a/lib/efi_loader/Kconfig +++ b/lib/efi_loader/Kconfig @@ -126,6 +126,14 @@ 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_MANAGEMENT + bool "Capsule: Firmware Management Protocol" + depends on EFI_HAVE_CAPSULE_SUPPORT + default y + help + Select this option if you want to enable capsule-based + firmware update using Firmware Management Protocol. + config EFI_DEVICE_PATH_TO_TEXT bool "Device path to text protocol" default y diff --git a/lib/efi_loader/efi_capsule.c b/lib/efi_loader/efi_capsule.c index 2a224546dd11..22d15bc4d8cd 100644 --- a/lib/efi_loader/efi_capsule.c +++ b/lib/efi_loader/efi_capsule.c @@ -14,6 +14,10 @@ #include <sort.h>
const efi_guid_t efi_guid_capsule_report = EFI_CAPSULE_REPORT_GUID; +static const efi_guid_t efi_guid_firmware_management_capsule_id = + EFI_FIRMWARE_MANAGEMENT_CAPSULE_ID_GUID; +const efi_guid_t efi_guid_firmware_management_protocol = + EFI_FIRMWARE_MANAGEMENT_PROTOCOL_GUID;
#ifdef CONFIG_EFI_CAPSULE_ON_DISK /* for file system access */ @@ -91,6 +95,211 @@ void set_capsule_result(int num, struct efi_capsule_header *capsule, printf("EFI: creating %s failed\n", variable_name); }
+#ifdef CONFIG_EFI_CAPSULE_FIRMWARE_MANAGEMENT +/** + * efi_fmp_find - search for Firmware Management Protocol drivers + * @image_type: Image type guid + * @instance: Instance number + * @handles: Handles of FMP drivers + * @no_handles: Number of handles + * + * Search for Firmware Management Protocol drivers, matching the image + * type, @image_type and the machine instance, @instance, from the list, + * @handles. + * + * Return: + * * Protocol instance - on success + * * NULL - on failure + */ +static struct efi_firmware_management_protocol * +efi_fmp_find(efi_guid_t *image_type, u64 instance, efi_handle_t *handles, + efi_uintn_t no_handles) +{ + efi_handle_t *handle; + struct efi_firmware_management_protocol *fmp; + struct efi_firmware_image_descriptor *image_info, *desc; + efi_uintn_t info_size, descriptor_size; + u32 descriptor_version; + u8 descriptor_count; + bool found = false; + int i, j; + efi_status_t ret; + + for (i = 0, handle = handles; i < no_handles; i++, handle++) { + ret = EFI_CALL(efi_handle_protocol( + *handle, + &efi_guid_firmware_management_protocol, + (void **)&fmp)); + if (ret != EFI_SUCCESS) + continue; + + /* get device's image info */ + info_size = 0; + image_info = NULL; + descriptor_version = 0; + descriptor_count = 0; + descriptor_size = 0; + ret = EFI_CALL(fmp->get_image_info(fmp, &info_size, + image_info, + &descriptor_version, + &descriptor_count, + &descriptor_size, + NULL, NULL)); + if (ret != EFI_BUFFER_TOO_SMALL) + goto skip; + + image_info = malloc(info_size); + if (!image_info) + goto skip; + + ret = EFI_CALL(fmp->get_image_info(fmp, &info_size, + image_info, + &descriptor_version, + &descriptor_count, + &descriptor_size, + NULL, NULL)); + if (ret != EFI_SUCCESS) + goto skip; + + /* matching */ + for (j = 0, desc = image_info; j < descriptor_count; + j++, desc = (void *)desc + descriptor_size) { + EFI_PRINT("+++ desc[%d] index: %d, name: %ls\n", + j, desc->image_index, desc->image_id_name); + if (!guidcmp(&desc->image_type_id, image_type) && + (!instance || + !desc->hardware_instance || + (descriptor_version >= 3 && + desc->hardware_instance == instance))) + found = true; + } + +skip: + free(image_info); + EFI_CALL(efi_close_protocol( + (efi_handle_t)fmp, + &efi_guid_firmware_management_protocol, + NULL, NULL)); + if (found) + return fmp; + } + + return NULL; +} + +/** + * efi_capsule_update_firmware - update firmware from capsule + * @capsule_data: Capsule + * + * Update firmware, using a capsule, @capsule_data. Loading any FMP + * drivers embedded in a capsule is not supported. + * + * Return: status code + */ +static efi_status_t efi_capsule_update_firmware( + struct efi_capsule_header *capsule_data) +{ + struct efi_firmware_management_capsule_header *capsule; + struct efi_firmware_management_capsule_image_header *image; + size_t capsule_size; + void *image_binary, *vendor_code; + efi_handle_t *handles; + efi_uintn_t no_handles; + int item; + struct efi_firmware_management_protocol *fmp; + u16 *abort_reason; + efi_status_t ret = EFI_SUCCESS; + + /* sanity check */ + if (capsule_data->header_size < sizeof(*capsule) || + capsule_data->header_size >= capsule_data->capsule_image_size) + return EFI_INVALID_PARAMETER; + + capsule = (void *)capsule_data + capsule_data->header_size; + capsule_size = capsule_data->capsule_image_size + - capsule_data->header_size; + + if (capsule->version != 0x00000001) + return EFI_INVALID_PARAMETER; + + /* Drivers */ + /* TODO: support loading drivers */ + + handles = NULL; + ret = EFI_CALL(efi_locate_handle_buffer( + BY_PROTOCOL, + &efi_guid_firmware_management_protocol, + NULL, &no_handles, (efi_handle_t **)&handles)); + if (ret != EFI_SUCCESS) + return EFI_UNSUPPORTED; + + /* Payload */ + for (item = capsule->embedded_driver_count; + item < capsule->embedded_driver_count + + capsule->payload_item_count; item++) { + /* sanity check */ + if ((capsule->item_offset_list[item] + sizeof(*image) + >= capsule_size)) { + printf("EFI: A capsule has not enough size of data\n"); + ret = EFI_INVALID_PARAMETER; + goto out; + } + + image = (void *)capsule + capsule->item_offset_list[item]; + + if (image->version != 0x00000001 && + image->version != 0x00000002 && + image->version != 0x00000003) { + ret = EFI_INVALID_PARAMETER; + goto out; + } + + /* find a device for update firmware */ + /* TODO: should we pass index as well, or nothing but type? */ + fmp = efi_fmp_find(&image->update_image_type_id, + image->version == 0x1 ? 0 : + image->update_hardware_instance, + handles, no_handles); + if (!fmp) { + printf("EFI Capsule: driver not found for firmware type: %pUl, hardware instance: %lld\n", + &image->update_image_type_id, + image->version == 0x1 ? 0 : + image->update_hardware_instance); + ret = EFI_UNSUPPORTED; + goto out; + } + + /* do it */ + image_binary = (void *)image + sizeof(*image); + vendor_code = image_binary + image->update_image_size; + + abort_reason = NULL; + ret = EFI_CALL(fmp->set_image(fmp, image->update_image_index, + image_binary, + image->update_image_size, + vendor_code, NULL, + &abort_reason)); + if (ret != EFI_SUCCESS) { + printf("EFI Capsule: firmware update failed: %ls\n", + abort_reason); + efi_free_pool(abort_reason); + goto out; + } + } + +out: + efi_free_pool(handles); + + return ret; +} +#else +static efi_status_t efi_capsule_update_firmware( + struct efi_capsule_header *capsule_data) +{ + return EFI_UNSUPPORTED; +} +#endif /* CONFIG_EFI_CAPSULE_FIRMWARE_MANAGEMENT */ + /** * efi_update_capsule() - process information from operating system * @capsule_header_array: Array of virtual address pointers @@ -124,6 +333,26 @@ efi_status_t EFIAPI efi_update_capsule( ret = EFI_SUCCESS; for (i = 0, capsule = *capsule_header_array; i < capsule_count; i++, capsule = *(++capsule_header_array)) { + /* sanity check */ + if (capsule->header_size < sizeof(*capsule) || + capsule->capsule_image_size < sizeof(*capsule)) { + printf("EFI: A capsule has not enough size of data\n"); + continue; + } + + EFI_PRINT("Capsule[%d] (guid:%pUl)\n", + i, &capsule->capsule_guid); + if (!guidcmp(&capsule->capsule_guid, + &efi_guid_firmware_management_capsule_id)) { + ret = efi_capsule_update_firmware(capsule); + } else { + printf("EFI: not support capsule type: %pUl\n", + &capsule->capsule_guid); + ret = EFI_UNSUPPORTED; + } + + if (ret != EFI_SUCCESS) + goto out; } out: return EFI_EXIT(ret); diff --git a/lib/efi_loader/efi_setup.c b/lib/efi_loader/efi_setup.c index a0eb81f079e1..6c65a936a087 100644 --- a/lib/efi_loader/efi_setup.c +++ b/lib/efi_loader/efi_setup.c @@ -136,6 +136,10 @@ static efi_status_t efi_init_os_indications(void) os_indications_supported |= EFI_OS_INDICATIONS_FILE_CAPSULE_DELIVERY_SUPPORTED;
+ if (IS_ENABLED(CONFIG_EFI_CAPSULE_FIRMWARE_MANAGEMENT)) + os_indications_supported |= + EFI_OS_INDICATIONS_FMP_CAPSULE_SUPPORTED; + return efi_set_variable_int(L"OsIndicationsSupported", &efi_global_variable_guid, EFI_VARIABLE_BOOTSERVICE_ACCESS |