diff options
| -rw-r--r-- | src/mainboard/amd/bettong/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/mainboard/amd/bettong/boardid.c | 48 |
2 files changed, 50 insertions, 0 deletions
diff --git a/src/mainboard/amd/bettong/Makefile.inc b/src/mainboard/amd/bettong/Makefile.inc index 0361362d06..5358d926ea 100644 --- a/src/mainboard/amd/bettong/Makefile.inc +++ b/src/mainboard/amd/bettong/Makefile.inc @@ -15,9 +15,11 @@ 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 0000000000..ae33328c1f --- /dev/null +++ b/src/mainboard/amd/bettong/boardid.c @@ -0,0 +1,48 @@ +/* + * 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. + */ + +#include <stdint.h> +#include <arch/io.h> +#include <boardid.h> + +/** + *Bettong uses 3 GPIO(5-7) pins 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 + */ +uint8_t board_id(void) +{ + void *gpiommioaddr; + u8 value = 0; + u8 boardrev = 0; + char boardid; + + gpiommioaddr = (void *)0xfed80000ul + 0x1500; + value = read8(gpiommioaddr + (7 << 2) + 2); /* agpio7: board_id2 */ + boardrev = value & 1; + value = read8(gpiommioaddr + (6 << 2) + 2); /* agpio6: board_id1 */ + boardrev |= (value & 1) << 1; + value = read8(gpiommioaddr + (5 << 2) + 2); /* agpio5: board_id0 */ + boardrev |= (value & 1) << 2; + + boardid = 'A' + boardrev; + + return boardid; +} |