WANG Siyuan (wangsiyuanbuaa@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/11732
-gerrit
commit 3dca48afd5a754696bdabedc90220d60cef36ffd Author: WANG Siyuan wangsiyuanbuaa@gmail.com Date: Fri Jul 3 20:29:56 2015 +0800
AMD Bettong: add get_board_id to read board version
Bettong use 3 GPIO(5-7) ports to identify board. The GPIO ports are mapped to MMIO space. The GPIO value and board version are mapped as follow: GPIO5 GPIO6 GPIO7 Version 0 0 0 A 0 0 1 B ...... 1 1 1 H
Change-Id: I72df28043057d8c4ccc4a2e645011ca5379e9928 Signed-off-by: WANG Siyuan wangsiyuanbuaa@gmail.com Signed-off-by: WANG Siyuan SiYuan.Wang@amd.com --- src/mainboard/amd/bettong/Makefile.inc | 2 ++ src/mainboard/amd/bettong/boardid.c | 45 ++++++++++++++++++++++++++++++++++ 2 files changed, 47 insertions(+)
diff --git a/src/mainboard/amd/bettong/Makefile.inc b/src/mainboard/amd/bettong/Makefile.inc index 70722ee..197da03 100644 --- a/src/mainboard/amd/bettong/Makefile.inc +++ b/src/mainboard/amd/bettong/Makefile.inc @@ -19,9 +19,11 @@
romstage-y += BiosCallOuts.c romstage-y += PlatformGnbPcie.c +romstage-y += boardid.c
ramstage-y += BiosCallOuts.c ramstage-y += PlatformGnbPcie.c ifeq ($(CONFIG_HUDSON_IMC_FWM), y) ramstage-y += fchec.c endif +ramstage-y += boardid.c diff --git a/src/mainboard/amd/bettong/boardid.c b/src/mainboard/amd/bettong/boardid.c new file mode 100644 index 0000000..30343d7 --- /dev/null +++ b/src/mainboard/amd/bettong/boardid.c @@ -0,0 +1,45 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2015 Advanced Micro Devices, Inc. + * + * 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 + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +#include <stdint.h> +#include <arch/io.h> +#include <arch/acpi.h> +#include <console/console.h> +#include <reset.h> +#include <boardid.h> + +uint8_t board_id(void) +{ + u32 gpiommioaddr; + u8 value = 0; + u8 boardrev = 0; + char boardid; + + gpiommioaddr = 0xfed80000ul + 0x1500; + value = *(volatile u8 *) (gpiommioaddr + (7 << 2) + 2); //agpio7 //board_id2 + boardrev = value & 1; + value = *(volatile u8 *) (gpiommioaddr + (6 << 2) + 2); //agpio6 //board_id1 + boardrev |= (value & 1) << 1; + value = *(volatile u8 *) (gpiommioaddr + (5 << 2) + 2); //agpio5 //board_id0 + boardrev |= (value & 1) << 2; + + boardid = 'A' + boardrev; + + return boardid; +}