blob: c6b199700ee803489ee1de093b641f2627dd588d [file] [log] [blame]
* This file is part of the coreboot project.
* Copyright 2016 Google 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
* GNU General Public License for more details.
#include <arch/acpi.h>
#include <baseboard/variants.h>
#include <boardid.h>
#include <console/console.h>
#include <device/device.h>
#include <ec/ec.h>
#include <gpio.h>
#include <nhlt.h>
#include <smbios.h>
#include <soc/gpio.h>
#include <soc/nhlt.h>
#include <string.h>
#include <vendorcode/google/chromeos/chromeos.h>
#include <variant/ec.h>
#include <variant/gpio.h>
static void mainboard_init(void *chip_info)
int boardid;
const struct pad_config *pads;
size_t num;
boardid = board_id();
printk(BIOS_INFO, "Board ID: %d\n", boardid);
pads = variant_gpio_table(&num);
gpio_configure_pads(pads, num);
* There are 2 pins on reef-like boards that can be used for SKU'ing
* board differences. They each have optional stuffing for a pullup and
* a pulldown. This way we can generate 9 different values with the
* 2 pins.
uint8_t __attribute__((weak)) variant_board_sku(void)
static int board_sku_num = -1;
gpio_t board_sku_gpios[] = {
[1] = GPIO_17, [0] = GPIO_16,
const size_t num = ARRAY_SIZE(board_sku_gpios);
if (board_sku_num < 0)
board_sku_num = gpio_base3_value(board_sku_gpios, num);
return board_sku_num;
const char *smbios_mainboard_sku(void)
static char sku_str[7]; /* sku{0..255} */
snprintf(sku_str, sizeof(sku_str), "sku%d", variant_board_sku());
return sku_str;
void __attribute__((weak)) variant_nhlt_oem_overrides(const char **oem_id,
const char **oem_table_id,
uint32_t *oem_revision)
*oem_id = "reef";
*oem_table_id = CONFIG_VARIANT_DIR;
*oem_revision = variant_board_sku();
static unsigned long mainboard_write_acpi_tables(
device_t device, unsigned long current, acpi_rsdp_t *rsdp)
uintptr_t start_addr;
uintptr_t end_addr;
struct nhlt *nhlt;
const char *oem_id = NULL;
const char *oem_table_id = NULL;
uint32_t oem_revision = 0;
start_addr = current;
nhlt = nhlt_init();
if (nhlt == NULL)
return start_addr;
variant_nhlt_oem_overrides(&oem_id, &oem_table_id, &oem_revision);
end_addr = nhlt_soc_serialize_oem_overrides(nhlt, start_addr,
oem_id, oem_table_id, oem_revision);
if (end_addr != start_addr)
acpi_add_table(rsdp, (void *)start_addr);
return end_addr;
static void mainboard_enable(device_t dev)
dev->ops->write_acpi_tables = mainboard_write_acpi_tables;
dev->ops->acpi_inject_dsdt_generator = chromeos_dsdt_generator;
struct chip_operations mainboard_ops = {
.init = mainboard_init,
.enable_dev = mainboard_enable,