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author | Masahisa Kojima <masahisa.kojima@linaro.org> | 2023-06-07 14:41:54 +0900 |
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committer | Heinrich Schuchardt <heinrich.schuchardt@canonical.com> | 2023-06-08 09:20:36 +0200 |
commit | 25dc7d5aedfef310a7e49b37e2556dc84b79cb00 (patch) | |
tree | 49be10dd6e0b12c84e78a75cd8a096a83b9ea9d7 /lib | |
parent | 3cba9702d19cb34d26689b1c9180c03b0c73baf8 (diff) | |
download | u-boot-25dc7d5aedfef310a7e49b37e2556dc84b79cb00.zip u-boot-25dc7d5aedfef310a7e49b37e2556dc84b79cb00.tar.gz u-boot-25dc7d5aedfef310a7e49b37e2556dc84b79cb00.tar.bz2 |
efi_loader: get lowest supported version from device tree
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>
Diffstat (limited to 'lib')
-rw-r--r-- | lib/efi_loader/efi_firmware.c | 50 |
1 files changed, 49 insertions, 1 deletions
diff --git a/lib/efi_loader/efi_firmware.c b/lib/efi_loader/efi_firmware.c index 5b71a2f..ae631f4 100644 --- a/lib/efi_loader/efi_firmware.c +++ b/lib/efi_loader/efi_firmware.c @@ -145,6 +145,51 @@ efi_status_t EFIAPI efi_firmware_set_package_info_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 * @fw_array: Pointer to size of new image @@ -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; } |