src/driver/vpd: Update vpd_decode from upstream

The upstream vpd_decode.c has been revised to prevent overrun of decoded
contents.

BUG=chromium:967209
TEST=select VPD config on kukui; make; boots on at least kukui boards.

Change-Id: I1a50670a66b7b174d2a432c29d90152b86c32982
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33414
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

1 files changed, 2 insertions, 19 deletions

diff --git a/src/drivers/vpd/vpd_decode.h b/src/drivers/vpd/vpd_decode.h
index 99ca7efa81..5d595f367f 100644
--- a/src/drivers/vpd/vpd_decode.h
+++ b/src/drivers/vpd/vpd_decode.h
@@ -30,28 +30,11 @@ typedef int vpd_decode_callback(
 		void *arg);
 
 /*
- * vpd_decode_len
- *
- * Given an encoded string, this function extracts the length of content
- * (either key or value). The *consumed will contain the number of bytes
- * consumed.
- *
- * The input_buf points to the first byte of the input buffer.
- *
- * The *consumed starts from 0, which is actually the next byte to be decoded.
- * It can be non-zero to be used in multiple calls.
- *
- * Returns VPD_DECODE_OK on success, otherwise VPD_DECODE_FAIL.
- */
-int vpd_decode_len(
-		const u32 max_len, const u8 *in, u32 *length, u32 *decoded_len);
-
-/*
  * vpd_decode_string
  *
  * Given the encoded string, this function invokes callback with extracted
- * (key, value). The *consumed will be plused the number of bytes consumed in
- * this function.
+ * (key, value). The *consumed will be incremented by the number of bytes
+ * consumed in this function.
  *
  * The input_buf points to the first byte of the input buffer.
  *