diff options
Diffstat (limited to 'src/mainboard/protectli/vault_bsw/mainboard.c')
-rw-r--r-- | src/mainboard/protectli/vault_bsw/mainboard.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/mainboard/protectli/vault_bsw/mainboard.c b/src/mainboard/protectli/vault_bsw/mainboard.c new file mode 100644 index 0000000000..1fd891918b --- /dev/null +++ b/src/mainboard/protectli/vault_bsw/mainboard.c @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* This file is part of the coreboot project. */ + +#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, +}; |