u-boot/arch/x86/cpu/coreboot/coreboot.c
Tom Rini b84d2f203e x86: Make default_print_cpuinfo be a weak alias for print_cpuinfo
While a few SoCs have a unique print_cpuinfo function, a number of them
just use default_print_cpuinfo. Make default_print_cpuinfo have a weak
alias to provie print_cpuinfo.

Signed-off-by: Tom Rini <trini@konsulko.com>
2024-10-18 14:10:21 -06:00

87 lines
1.7 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 <cpu_func.h>
#include <event.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/cb_sysinfo.h>
#include <asm/arch/timestamp.h>
#include <dm/ofnode.h>
int arch_cpu_init(void)
{
int ret;
ret = IS_ENABLED(CONFIG_X86_RUN_64BIT) ? x86_cpu_reinit_f() :
x86_cpu_init_f();
if (ret)
return ret;
ret = get_coreboot_info(&lib_sysinfo);
if (ret != 0) {
printf("Failed to parse coreboot tables.\n");
return ret;
}
timestamp_init();
return 0;
}
int checkcpu(void)
{
return 0;
}
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 (!ofnode_conf_read_bool("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);
}
}
static int last_stage_init(void)
{
if (IS_ENABLED(CONFIG_XPL_BUILD))
return 0;
board_final_init();
return 0;
}
EVENT_SPY_SIMPLE(EVT_LAST_STAGE_INIT, last_stage_init);