1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2013 Google Inc.
* Copyright (C) 2015-2016 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.
*/
#include <stdlib.h>
#include <arch/cpu.h>
#include <arch/acpi.h>
#include <console/console.h>
#include <cpu/intel/microcode.h>
#include <cpu/x86/cr.h>
#include <cpu/x86/msr.h>
#include <device/device.h>
#include <device/pci_def.h>
#include <device/pci_ops.h>
#include <romstage_handoff.h>
#include <soc/lpc.h>
#include <soc/msr.h>
#include <soc/pattrs.h>
#include <soc/pci_devs.h>
#include <soc/ramstage.h>
/* Global PATTRS */
DEFINE_PATTRS;
#define SHOW_PATTRS 1
static void detect_num_cpus(struct pattrs *attrs)
{
msr_t core_thread_count = rdmsr(MSR_CORE_THREAD_COUNT);
attrs->num_cpus = core_thread_count.lo & 0xffff;
}
static inline void fill_in_msr(msr_t *msr, int idx)
{
*msr = rdmsr(idx);
if (SHOW_PATTRS) {
printk(BIOS_DEBUG, "msr(%x) = %08x%08x\n",
idx, msr->hi, msr->lo);
}
}
static const char *stepping_str[] = {
"U0", "V1", "V2", "Y0"
};
static void fill_in_pattrs(void)
{
struct device *dev;
struct pattrs *attrs = (struct pattrs *)pattrs_get();
attrs->cpuid = cpuid_eax(1);
attrs->stepping = (attrs->cpuid & 0x0F) - 1;
dev = dev_find_slot(0, PCI_DEVFN(LPC_DEV, LPC_FUNC));
attrs->revid = pci_read_config8(dev, REVID);
attrs->microcode_patch = intel_microcode_find();
attrs->address_bits = cpuid_eax(0x80000008) & 0xff;
detect_num_cpus(attrs);
if (SHOW_PATTRS) {
printk(BIOS_DEBUG, "CPUID: %08x\n", attrs->cpuid);
printk(BIOS_DEBUG, "Cores: %d\n", attrs->num_cpus);
printk(BIOS_DEBUG, "Stepping: %s\n", (attrs->stepping >= ARRAY_SIZE(stepping_str))
? "??" : stepping_str[attrs->stepping]);
printk(BIOS_DEBUG, "Revision ID: %02x\n", attrs->revid);
}
fill_in_msr(&attrs->platform_id, IA32_PLATFORM_ID);
fill_in_msr(&attrs->platform_info, MSR_PLATFORM_INFO);
}
void broadwell_de_init_pre_device(void)
{
fill_in_pattrs();
}
|
