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
|
/* SPDX-License-Identifier: GPL-2.0-only */
#include <amdblocks/mca.h>
#include <amdblocks/reset.h>
#include <cpu/amd/msr.h>
#include <cpu/x86/lapic.h>
#include <cpu/x86/msr.h>
#include <console/console.h>
#include <types.h>
static const char *const mca_bank_name[] = {
[0] = "Load-store unit",
[1] = "Instruction fetch unit",
[2] = "Combined unit",
/* Bank 3 is reserved and not all corresponding MSRs are implemented in Family 15h.
Accessing non-existing MSRs causes a general protection fault. */
[3] = NULL,
[4] = "Northbridge",
[5] = "Execution unit",
[6] = "Floating point unit"
};
static bool mca_is_valid_bank(unsigned int bank)
{
return (bank < ARRAY_SIZE(mca_bank_name) && mca_bank_name[bank] != NULL);
}
static const char *mca_get_bank_name(unsigned int bank)
{
if (mca_is_valid_bank(bank))
return mca_bank_name[bank];
else
return "";
}
static void mca_print_error(unsigned int bank)
{
msr_t msr;
printk(BIOS_WARNING, "#MC Error: core %u, bank %u %s\n", initial_lapicid(), bank,
mca_get_bank_name(bank));
msr = rdmsr(IA32_MC_STATUS(bank));
printk(BIOS_WARNING, " MC%u_STATUS = %08x_%08x\n", bank, msr.hi, msr.lo);
msr = rdmsr(IA32_MC_ADDR(bank));
printk(BIOS_WARNING, " MC%u_ADDR = %08x_%08x\n", bank, msr.hi, msr.lo);
msr = rdmsr(IA32_MC_MISC(bank));
printk(BIOS_WARNING, " MC%u_MISC = %08x_%08x\n", bank, msr.hi, msr.lo);
msr = rdmsr(IA32_MC_CTL(bank));
printk(BIOS_WARNING, " MC%u_CTL = %08x_%08x\n", bank, msr.hi, msr.lo);
msr = rdmsr(MC_CTL_MASK(bank));
printk(BIOS_WARNING, " MC%u_CTL_MASK = %08x_%08x\n", bank, msr.hi, msr.lo);
}
void mca_check_all_banks(void)
{
struct mca_bank_status mci;
const unsigned int num_banks = mca_get_bank_count();
if (!is_warm_reset())
return;
for (unsigned int i = 0 ; i < num_banks ; i++) {
if (!mca_is_valid_bank(i))
continue;
mci.bank = i;
mci.sts = rdmsr(IA32_MC_STATUS(i));
if (mci.sts.hi || mci.sts.lo) {
mca_print_error(i);
if (CONFIG(ACPI_BERT) && mca_valid(mci.sts))
build_bert_mca_error(&mci);
}
}
}
|
