mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 08:57:58 +00:00
fda4fa8195
Add a debug() at this point to help figure out what is wrong. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Heiko Schocher<hs@denx.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
113 lines
2.5 KiB
C
113 lines
2.5 KiB
C
/*
|
|
* Copyright (c) 2016 Google, Inc
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <asm/cpu_common.h>
|
|
#include <asm/intel_regs.h>
|
|
#include <asm/lapic.h>
|
|
#include <asm/lpc_common.h>
|
|
#include <asm/msr.h>
|
|
#include <asm/mtrr.h>
|
|
#include <asm/post.h>
|
|
#include <asm/microcode.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
static int report_bist_failure(void)
|
|
{
|
|
if (gd->arch.bist != 0) {
|
|
post_code(POST_BIST_FAILURE);
|
|
printf("BIST failed: %08x\n", gd->arch.bist);
|
|
return -EFAULT;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int cpu_common_init(void)
|
|
{
|
|
struct udevice *dev, *lpc;
|
|
int ret;
|
|
|
|
/* Halt if there was a built in self test failure */
|
|
ret = report_bist_failure();
|
|
if (ret)
|
|
return ret;
|
|
|
|
enable_lapic();
|
|
|
|
ret = microcode_update_intel();
|
|
if (ret && ret != -EEXIST) {
|
|
debug("%s: Microcode update failure (err=%d)\n", __func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
/* Enable upper 128bytes of CMOS */
|
|
writel(1 << 2, RCB_REG(RC));
|
|
|
|
/* Early chipset init required before RAM init can work */
|
|
uclass_first_device(UCLASS_NORTHBRIDGE, &dev);
|
|
|
|
ret = uclass_first_device(UCLASS_LPC, &lpc);
|
|
if (ret)
|
|
return ret;
|
|
if (!lpc)
|
|
return -ENODEV;
|
|
|
|
/* Cause the SATA device to do its early init */
|
|
uclass_first_device(UCLASS_AHCI, &dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int cpu_set_flex_ratio_to_tdp_nominal(void)
|
|
{
|
|
msr_t flex_ratio, msr;
|
|
u8 nominal_ratio;
|
|
|
|
/* Check for Flex Ratio support */
|
|
flex_ratio = msr_read(MSR_FLEX_RATIO);
|
|
if (!(flex_ratio.lo & FLEX_RATIO_EN))
|
|
return -EINVAL;
|
|
|
|
/* Check for >0 configurable TDPs */
|
|
msr = msr_read(MSR_PLATFORM_INFO);
|
|
if (((msr.hi >> 1) & 3) == 0)
|
|
return -EINVAL;
|
|
|
|
/* Use nominal TDP ratio for flex ratio */
|
|
msr = msr_read(MSR_CONFIG_TDP_NOMINAL);
|
|
nominal_ratio = msr.lo & 0xff;
|
|
|
|
/* See if flex ratio is already set to nominal TDP ratio */
|
|
if (((flex_ratio.lo >> 8) & 0xff) == nominal_ratio)
|
|
return 0;
|
|
|
|
/* Set flex ratio to nominal TDP ratio */
|
|
flex_ratio.lo &= ~0xff00;
|
|
flex_ratio.lo |= nominal_ratio << 8;
|
|
flex_ratio.lo |= FLEX_RATIO_LOCK;
|
|
msr_write(MSR_FLEX_RATIO, flex_ratio);
|
|
|
|
/* Set flex ratio in soft reset data register bits 11:6 */
|
|
clrsetbits_le32(RCB_REG(SOFT_RESET_DATA), 0x3f << 6,
|
|
(nominal_ratio & 0x3f) << 6);
|
|
|
|
debug("CPU: Soft reset to set up flex ratio\n");
|
|
|
|
/* Set soft reset control to use register value */
|
|
setbits_le32(RCB_REG(SOFT_RESET_CTRL), 1);
|
|
|
|
/* Issue warm reset, will be "CPU only" due to soft reset data */
|
|
outb(0x0, IO_PORT_RESET);
|
|
outb(SYS_RST | RST_CPU, IO_PORT_RESET);
|
|
cpu_hlt();
|
|
|
|
/* Not reached */
|
|
return -EINVAL;
|
|
}
|