1 files changed, 0 insertions, 56 deletions
diff --git a/board/cr50/u2f.c b/board/cr50/u2f.c
index 3e6e0c3a69..7c6273823c 100644
--- a/board/cr50/u2f.c
+++ b/board/cr50/u2f.c
@@ -309,59 +309,3 @@ int u2f_gen_kek_seed(int commit)
 
 	return EC_SUCCESS;
 }
-
-/*
- * We need to keep a dummy version of this function around, as u2fd on M77 will
- * call it and not start up or send commands unless it receives a success
- * response. cr50 has been updated to no longer require the commands being sent,
- * so we don't need to do anything other than return a valid success response.
- */
-static enum vendor_cmd_rc vc_u2f_apdu_dummy(enum vendor_cmd_cc code, void *body,
-					    size_t cmd_size,
-					    size_t *response_size)
-{
-	uint8_t *cmd = body;
-
-	if (cmd_size < 3)
-		return VENDOR_RC_BOGUS_ARGS;
-
-	/*
-	 * The incoming APDUs are in the following format:
-	 *
-	 *   CLA INS   P1  P2  Le
-	 *   00  <ins> ??  ??  ??
-	 */
-
-	if (cmd[1] == 0xbf /* U2F_VENDOR_MODE */) {
-		/*
-		 * The u2fd code that call this command expects confirmation
-		 * that the mode was correctly set in the return message.
-		 *
-		 * The incoming APDU is in the following format:
-		 *
-		 *   CLA INS P1  P2      Le
-		 *   00  bf  01  <mode>  00
-		 */
-		cmd[0] = cmd[3];
-	} else if (cmd[1] == 0x03 /* U2F_VERSION */) {
-		/*
-		 * The returned value for U2F_VERSION is not checked; return
-		 * a known string just to be safe.
-		 */
-		cmd[0] = '2';
-	} else {
-		/* We're not expecting any other commands. */
-		*response_size = 0;
-		return VENDOR_RC_NO_SUCH_SUBCOMMAND;
-	}
-
-	/*
-	 * Return U2F_SW_NO_ERROR status.
-	 */
-	cmd[1] = 0x90;
-	cmd[2] = 0x00;
-	*response_size = 3;
-
-	return VENDOR_RC_SUCCESS;
-}
-DECLARE_VENDOR_COMMAND(VENDOR_CC_U2F_APDU, vc_u2f_apdu_dummy);