From cd26f08d942638da9a6aa85bb8bd873197f467c8 Mon Sep 17 00:00:00 2001 From: Praveen hodagatta pranesh Date: Wed, 19 Dec 2018 19:28:21 +0800 Subject: mb/intel/kblrvp: Add helper function to get Board Id Add 2 helper function get_board_id() & get_spd_index() to read board id & spd index from EC. Rename the old get_board_id() function to get_ec_boardinfo(). BUG=None TEST= Tested on KBL RVP11, able to read the Board id (0x44) and verified in serial logs. not verified on KBL RVP8. Signed-off-by: Praveen hodagatta pranesh Change-Id: Ie20bf0d45a3568c2c433e5b844bea86aac07c47d Reviewed-on: https://review.coreboot.org/c/30306 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi --- src/mainboard/intel/kblrvp/board_id.c | 42 +++++++++++++++++++++++++++-------- 1 file changed, 33 insertions(+), 9 deletions(-) (limited to 'src/mainboard/intel/kblrvp/board_id.c') diff --git a/src/mainboard/intel/kblrvp/board_id.c b/src/mainboard/intel/kblrvp/board_id.c index a362b08df8..d4c4f535cb 100644 --- a/src/mainboard/intel/kblrvp/board_id.c +++ b/src/mainboard/intel/kblrvp/board_id.c @@ -1,7 +1,7 @@ /* * This file is part of the coreboot project. * - * Copyright (C) 2016 Intel Corporation. + * Copyright (C) 2016-2018 Intel Corporation. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -15,18 +15,42 @@ #include "board_id.h" #include #include +#include /* - * Get Board ID via EC I/O port write/read + * Get Board info via EC I/O port write/read */ -int get_board_id(void) +int get_ec_boardinfo(void) { - uint8_t buffer[2]; - uint8_t index; - if (send_ec_command(EC_FAB_ID_CMD) == 0) { - for (index = 0; index < sizeof(buffer); index++) - buffer[index] = recv_ec_data(); - return (buffer[1] << 8) | buffer[0]; + MAYBE_STATIC int ec_info = -1; + if (ec_info < 0) { + uint8_t buffer[2]; + uint8_t index; + if (send_ec_command(EC_FAB_ID_CMD) == 0) { + for (index = 0; index < sizeof(buffer); index++) + buffer[index] = recv_ec_data(); + ec_info = (buffer[1] << 8) | buffer[0]; + } } + return ec_info; +} + +/* Get spd index */ +int get_spd_index(void) +{ + int ec_info = get_ec_boardinfo(); + if (ec_info >= 0) + return ((uint16_t)ec_info >> 5) & 0x7; + + return -1; +} + +/* Get Board Id */ +int get_board_id(void) +{ + int ec_info = get_ec_boardinfo(); + if (ec_info >= 0) + return ((uint16_t)ec_info >> 8) & 0xff; + return -1; } -- cgit v1.2.3