88 lines
1.8 KiB
C
88 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (c) 2011 The Chromium OS Authors.
|
|
* (C) Copyright 2008
|
|
* Graeme Russ, graeme.russ@gmail.com.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <cpu_func.h>
|
|
#include <fdtdec.h>
|
|
#include <init.h>
|
|
#include <usb.h>
|
|
#include <asm/global_data.h>
|
|
#include <asm/io.h>
|
|
#include <asm/msr.h>
|
|
#include <asm/mtrr.h>
|
|
#include <asm/arch/sysinfo.h>
|
|
#include <asm/arch/timestamp.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
int arch_cpu_init(void)
|
|
{
|
|
int ret = get_coreboot_info(&lib_sysinfo);
|
|
if (ret != 0) {
|
|
printf("Failed to parse coreboot tables.\n");
|
|
return ret;
|
|
}
|
|
|
|
timestamp_init();
|
|
|
|
return IS_ENABLED(CONFIG_X86_RUN_64BIT) ? x86_cpu_reinit_f() :
|
|
x86_cpu_init_f();
|
|
}
|
|
|
|
int checkcpu(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int print_cpuinfo(void)
|
|
{
|
|
return default_print_cpuinfo();
|
|
}
|
|
|
|
static void board_final_init(void)
|
|
{
|
|
/*
|
|
* Un-cache the ROM so the kernel has one
|
|
* more MTRR available.
|
|
*
|
|
* Coreboot should have assigned this to the
|
|
* top available variable MTRR.
|
|
*/
|
|
u8 top_mtrr = (native_read_msr(MTRR_CAP_MSR) & 0xff) - 1;
|
|
u8 top_type = native_read_msr(MTRR_PHYS_BASE_MSR(top_mtrr)) & 0xff;
|
|
|
|
/* Make sure this MTRR is the correct Write-Protected type */
|
|
if (top_type == MTRR_TYPE_WRPROT) {
|
|
struct mtrr_state state;
|
|
|
|
mtrr_open(&state, true);
|
|
wrmsrl(MTRR_PHYS_BASE_MSR(top_mtrr), 0);
|
|
wrmsrl(MTRR_PHYS_MASK_MSR(top_mtrr), 0);
|
|
mtrr_close(&state, true);
|
|
}
|
|
|
|
if (!fdtdec_get_config_bool(gd->fdt_blob, "u-boot,no-apm-finalize")) {
|
|
/*
|
|
* Issue SMI to coreboot to lock down ME and registers
|
|
* when allowed via device tree
|
|
*/
|
|
printf("Finalizing coreboot\n");
|
|
outb(0xcb, 0xb2);
|
|
}
|
|
}
|
|
|
|
int last_stage_init(void)
|
|
{
|
|
/* start usb so that usb keyboard can be used as input device */
|
|
if (CONFIG_IS_ENABLED(USB_KEYBOARD))
|
|
usb_init();
|
|
|
|
board_final_init();
|
|
|
|
return 0;
|
|
}
|