This commit gets the lowest supported version from device tree, then fills the lowest supported version in FMP->GetImageInfo().
Signed-off-by: Masahisa Kojima masahisa.kojima@linaro.org Reviewed-by: Ilias Apalodimas ilias.apalodimas@linaro.org --- No update since v6
Changed in v6: - fw_version is removed from device tree
.../firmware/firmware-version.txt | 22 ++++++++ lib/efi_loader/efi_firmware.c | 50 ++++++++++++++++++- 2 files changed, 71 insertions(+), 1 deletion(-) create mode 100644 doc/device-tree-bindings/firmware/firmware-version.txt
diff --git a/doc/device-tree-bindings/firmware/firmware-version.txt b/doc/device-tree-bindings/firmware/firmware-version.txt new file mode 100644 index 0000000000..ee90ce3117 --- /dev/null +++ b/doc/device-tree-bindings/firmware/firmware-version.txt @@ -0,0 +1,22 @@ +firmware-version bindings +------------------------------- + +Required properties: +- image-type-id : guid for image blob type +- image-index : image index +- lowest-supported-version : lowest supported version + +Example: + + firmware-version { + image1 { + image-type-id = "09D7CF52-0720-4710-91D1-08469B7FE9C8"; + image-index = <1>; + lowest-supported-version = <3>; + }; + image2 { + image-type-id = "5A7021F5-FEF2-48B4-AABA-832E777418C0"; + image-index = <2>; + lowest-supported-version = <7>; + }; + }; diff --git a/lib/efi_loader/efi_firmware.c b/lib/efi_loader/efi_firmware.c index 5b71a2fcc9..ae631f49f7 100644 --- a/lib/efi_loader/efi_firmware.c +++ b/lib/efi_loader/efi_firmware.c @@ -144,6 +144,51 @@ efi_status_t EFIAPI efi_firmware_set_package_info_unsupported( return EFI_EXIT(EFI_UNSUPPORTED); }
+/** + * efi_firmware_get_lsv_from_dtb - get lowest supported version from dtb + * @image_index: Image index + * @image_type_id: Image type id + * @lsv: Pointer to store the lowest supported version + * + * Read the firmware version information from dtb. + */ +static void efi_firmware_get_lsv_from_dtb(u8 image_index, + efi_guid_t *image_type_id, u32 *lsv) +{ + const void *fdt = gd->fdt_blob; + const fdt32_t *val; + const char *guid_str; + int len, offset, index; + int parent; + + *lsv = 0; + + parent = fdt_subnode_offset(fdt, 0, "firmware-version"); + if (parent < 0) + return; + + fdt_for_each_subnode(offset, fdt, parent) { + efi_guid_t guid; + + guid_str = fdt_getprop(fdt, offset, "image-type-id", &len); + if (!guid_str) + continue; + uuid_str_to_bin(guid_str, guid.b, UUID_STR_FORMAT_GUID); + + val = fdt_getprop(fdt, offset, "image-index", &len); + if (!val) + continue; + index = fdt32_to_cpu(*val); + + if (!guidcmp(&guid, image_type_id) && index == image_index) { + val = fdt_getprop(fdt, offset, + "lowest-supported-version", &len); + if (val) + *lsv = fdt32_to_cpu(*val); + } + } +} + /** * efi_firmware_fill_version_info - fill the version information * @image_info: Image information @@ -171,8 +216,11 @@ void efi_firmware_fill_version_info(struct efi_firmware_image_descriptor *image_ else image_info->version = 0;
+ efi_firmware_get_lsv_from_dtb(fw_array->image_index, + &fw_array->image_type_id, + &image_info->lowest_supported_image_version); + image_info->version_name = NULL; /* not supported */ - image_info->lowest_supported_image_version = 0; image_info->last_attempt_version = 0; image_info->last_attempt_status = LAST_ATTEMPT_STATUS_SUCCESS; }