/* SPDX-License-Identifier: GPL-2.0-or-later */ | |
#include <arch/mmio.h> | |
#include <device/device.h> | |
#include <soc/iomap.h> | |
#define BIOS_CONTROL_REG 0xFC | |
#define BIOS_CONTROL_WPD (1 << 0) | |
static void mainboard_enable(struct device *dev) | |
{ | |
volatile void *addr = (void *)(SPI_BASE_ADDRESS + BIOS_CONTROL_REG); | |
/* Set Bios Write Protect Disable bit to allow saving MRC cache */ | |
write8(addr, read8(addr) | BIOS_CONTROL_WPD); | |
} | |
struct chip_operations mainboard_ops = { | |
.enable_dev = mainboard_enable, | |
}; |