diff options
| -rw-r--r-- | util/cbfstool/fit.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/util/cbfstool/fit.c b/util/cbfstool/fit.c index e3e6c32a6f..d33cb56749 100644 --- a/util/cbfstool/fit.c +++ b/util/cbfstool/fit.c @@ -226,13 +226,18 @@ static int parse_microcode_blob(struct cbfs_image *image, mcu_header = rom_buffer_pointer(&image->buffer, current_offset); + /* Newer microcode updates include a size field, whereas older + * containers set it at 0 and are exactly 2048 bytes long */ + uint32_t total_size = mcu_header->total_size + ? mcu_header->total_size : 2048; + /* Quickly sanity check a prospective microcode update. */ - if (mcu_header->total_size < sizeof(*mcu_header)) + if (total_size < sizeof(*mcu_header)) break; /* FIXME: Should the checksum be validated? */ mcus[num_mcus].offset = current_offset; - mcus[num_mcus].size = mcu_header->total_size; + mcus[num_mcus].size = total_size; /* Proceed to next payload. */ current_offset += mcus[num_mcus].size; |