From 241bd40966e1cdddd05a159746c4ab8dc3438534 Mon Sep 17 00:00:00 2001 From: Marc Jones Date: Tue, 25 Jul 2017 16:00:58 -0600 Subject: [PATCH] google/kahlee: Add ChromeOS SMBIOS Board ID Kahlee uses 3 GPIO(144, 140, 135) pins to identify the board revision. Change-Id: Ia9693db6d6506af7ff40db0b3ce4cc6c1469f6ef Signed-off-by: Marc Jones Reviewed-on: https://review.coreboot.org/19837 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/mainboard/google/kahlee/Kconfig | 1 + src/mainboard/google/kahlee/Makefile.inc | 2 ++ src/mainboard/google/kahlee/boardid.c | 36 ++++++++++++++++++++++++ 3 files changed, 39 insertions(+) create mode 100644 src/mainboard/google/kahlee/boardid.c diff --git a/src/mainboard/google/kahlee/Kconfig b/src/mainboard/google/kahlee/Kconfig index c4ed275199..ad12d8c20c 100644 --- a/src/mainboard/google/kahlee/Kconfig +++ b/src/mainboard/google/kahlee/Kconfig @@ -27,6 +27,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy select HAVE_MP_TABLE select HAVE_ACPI_TABLES select GFXUMA + select GOOGLE_SMBIOS_MAINBOARD_VERSION select MAINBOARD_HAS_CHROMEOS select MAINBOARD_HAS_LPC_TPM select SERIRQ_CONTINUOUS_MODE diff --git a/src/mainboard/google/kahlee/Makefile.inc b/src/mainboard/google/kahlee/Makefile.inc index 6db037f726..faf061cdbe 100644 --- a/src/mainboard/google/kahlee/Makefile.inc +++ b/src/mainboard/google/kahlee/Makefile.inc @@ -20,11 +20,13 @@ bootblock-y += ec.c bootblock-y += gpio.c romstage-y += BiosCallOuts.c +romstage-y += boardid.c romstage-y += chromeos.c romstage-y += gpio.c romstage-y += OemCustomize.c ramstage-y += BiosCallOuts.c +ramstage-y += boardid.c ramstage-y += chromeos.c ramstage-y += ec.c ramstage-y += gpio.c diff --git a/src/mainboard/google/kahlee/boardid.c b/src/mainboard/google/kahlee/boardid.c new file mode 100644 index 0000000000..f19b032526 --- /dev/null +++ b/src/mainboard/google/kahlee/boardid.c @@ -0,0 +1,36 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2017 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 +#include +#include + +uint8_t board_id(void) +{ + MAYBE_STATIC int id = -1; + + gpio_t gpios[] = { + GPIO_135, + GPIO_140, + GPIO_144, + }; + + if (id < 0) { + id = gpio_base2_value(gpios, ARRAY_SIZE(gpios)); + printk(BIOS_SPEW, "Board ID: %#x.\n", id); + } + + return id; +}