/* SPDX-License-Identifier: GPL-2.0-only */ #include <console/console.h> #include <device/device.h> #include <cpu/x86/msr.h> #include <cpu/amd/msr.h> /************************************************* * enable the dedicated function in thatcher board. *************************************************/ static void mainboard_enable(struct device *dev) { msr_t msr; printk(BIOS_INFO, "Mainboard " CONFIG_MAINBOARD_PART_NUMBER " Enable.\n"); msr = rdmsr(LS_CFG_MSR); msr.lo &= ~(1 << 28); wrmsr(LS_CFG_MSR, msr); msr = rdmsr(DC_CFG_MSR); msr.lo &= ~(1 << 4); msr.lo &= ~(1 << 13); wrmsr(DC_CFG_MSR, msr); msr = rdmsr(BU_CFG_MSR); msr.lo &= ~(1 << 23); wrmsr(BU_CFG_MSR, msr); } struct chip_operations mainboard_ops = { .enable_dev = mainboard_enable, };