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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2019 Intel Corp.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
/*
* This file is created based on Intel Tiger Lake Platform Stepping and IDs
* Document number: 605534
* Chapter number: 2, 4, 5, 6
*/
#include <arch/cpu.h>
#include <device/pci_ops.h>
#include <console/console.h>
#include <cpu/x86/msr.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <intelblocks/mp_init.h>
#include <soc/bootblock.h>
#include <soc/pch.h>
#include <soc/pci_devs.h>
#include <string.h>
#define BIOS_SIGN_ID 0x8B
/*
* TODO: Add TGL specific CPU/SA/PCH IDs here
*/
static inline uint8_t get_dev_revision(pci_devfn_t dev)
{
return pci_read_config8(dev, PCI_REVISION_ID);
}
static inline uint16_t get_dev_id(pci_devfn_t dev)
{
return pci_read_config16(dev, PCI_DEVICE_ID);
}
static void report_cpu_info(void)
{
struct cpuid_result cpuidr;
u32 i, index, cpu_id, cpu_feature_flag;
const char cpu_not_found[] = "Platform info not available";
const char *cpu_name = cpu_not_found; /* 48 bytes are reported */
int vt, txt, aes;
msr_t microcode_ver;
static const char *const mode[] = {"NOT ", ""};
const char *cpu_type = "Unknown";
u32 p[13];
index = 0x80000000;
cpuidr = cpuid(index);
if (cpuidr.eax >= 0x80000004) {
int j = 0;
for (i = 2; i <= 4; i++) {
cpuidr = cpuid(index + i);
p[j++] = cpuidr.eax;
p[j++] = cpuidr.ebx;
p[j++] = cpuidr.ecx;
p[j++] = cpuidr.edx;
}
p[12] = 0;
cpu_name = (char *)p;
/* Skip leading spaces in CPU name string */
while (cpu_name[0] == ' ' && strlen(cpu_name) > 0)
cpu_name++;
}
microcode_ver.lo = 0;
microcode_ver.hi = 0;
wrmsr(BIOS_SIGN_ID, microcode_ver);
cpu_id = cpu_get_cpuid();
microcode_ver = rdmsr(BIOS_SIGN_ID);
/* Look for string to match the name */
for (i = 0; i < ARRAY_SIZE(cpu_table); i++) {
if (cpu_table[i].cpuid == cpu_id) {
cpu_type = cpu_table[i].name;
break;
}
}
printk(BIOS_DEBUG, "CPU: %s\n", cpu_name);
printk(BIOS_DEBUG, "CPU: ID %x, %s, ucode: %08x\n",
cpu_id, cpu_type, microcode_ver.hi);
cpu_feature_flag = cpu_get_feature_flags_ecx();
aes = (cpu_feature_flag & CPUID_AES) ? 1 : 0;
txt = (cpu_feature_flag & CPUID_SMX) ? 1 : 0;
vt = (cpu_feature_flag & CPUID_VMX) ? 1 : 0;
printk(BIOS_DEBUG,
"CPU: AES %ssupported, TXT %ssupported, VT %ssupported\n",
mode[aes], mode[txt], mode[vt]);
}
static void report_mch_info(void)
{
int i;
pci_devfn_t dev = SA_DEV_ROOT;
uint16_t mchid = get_dev_id(dev);
uint8_t mch_revision = get_dev_revision(dev);
const char *mch_type = "Unknown";
for (i = 0; i < ARRAY_SIZE(mch_table); i++) {
if (mch_table[i].mchid == mchid) {
mch_type = mch_table[i].name;
break;
}
}
printk(BIOS_DEBUG, "MCH: device id %04x (rev %02x) is %s\n",
mchid, mch_revision, mch_type);
}
static void report_pch_info(void)
{
int i;
pci_devfn_t dev = PCH_DEV_ESPI;
uint16_t espiid = get_dev_id(dev);
const char *pch_type = "Unknown";
for (i = 0; i < ARRAY_SIZE(pch_table); i++) {
if (pch_table[i].espiid == espiid) {
pch_type = pch_table[i].name;
break;
}
}
printk(BIOS_DEBUG, "PCH: device id %04x (rev %02x) is %s\n",
espiid, get_dev_revision(dev), pch_type);
}
static void report_igd_info(void)
{
int i;
pci_devfn_t dev = SA_DEV_IGD;
uint16_t igdid = get_dev_id(dev);
const char *igd_type = "Unknown";
for (i = 0; i < ARRAY_SIZE(igd_table); i++) {
if (igd_table[i].igdid == igdid) {
igd_type = igd_table[i].name;
break;
}
}
printk(BIOS_DEBUG, "IGD: device id %04x (rev %02x) is %s\n",
igdid, get_dev_revision(dev), igd_type);
}
void report_platform_info(void)
{
report_cpu_info();
report_mch_info();
report_pch_info();
report_igd_info();
}
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