soc/intel/tigerlake: Add CrashLog implementation for intel TGL

CrashLog is a diagnostic feature for Intel TGL based platforms.
It is meant to capture the state of the platform before a crash.
The state of relevant registers is preserved across a warm reset.

BUG=None
TEST=CrashLog data generated, extracted, processed, decoded sucessfully on delbin.

Signed-off-by: Francois Toguo <francois.toguo.fotso@intel.com>
Change-Id: Ie3763cebcd1178709cc8597710bf062a30901809
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49943
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
This commit is contained in:
Francois Toguo 2021-01-26 10:27:49 -08:00 committed by Patrick Georgi
parent 619c60f94c
commit 15cbc3b599
14 changed files with 1194 additions and 4 deletions

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@ -10,7 +10,13 @@ config SOC_INTEL_COMMON_BLOCK_ACPI_LPIT
depends on HAVE_ACPI_TABLES
select ACPI_LPIT
help
Generate LPIT table with LPI state entries.
Generate LPIT table with LPI state entries
config SOC_INTEL_COMMON_BLOCK_CRASHLOG
bool
depends on SOC_INTEL_CRASHLOG
help
Generate crash data for BERT table
if SOC_INTEL_COMMON_BLOCK_ACPI
@ -19,4 +25,5 @@ config SOC_INTEL_COMMON_BLOCK_ACPI_CPPC
help
Generate CPPC entries for Intel SpeedShift
endif

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@ -1,3 +1,4 @@
ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI) += acpi.c
ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_LPIT) += lpit.c
ramstage-$(CONFIG_ACPI_BERT) += acpi_bert.c
ramstage-$(CONFIG_SOC_INTEL_COMMON_ACPI_WAKE_SOURCE) += acpi_wake_source.c

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@ -0,0 +1,95 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <acpi/acpi.h>
#include <acpi/acpigen.h>
#include <arch/bert_storage.h>
#include <console/console.h>
#include <intelblocks/acpi.h>
#include <intelblocks/crashlog.h>
void acpi_soc_fill_bert(acpi_bert_t *bert,
void **region,
size_t *length)
{
acpi_generic_error_status_t *status = NULL;
size_t cpu_record_size, pmc_record_size;
void *cl_data = NULL;
if (!cl_get_total_data_size()) {
printk(BIOS_ERR, "Error: No crashlog record present\n");
return;
}
status = bert_new_event(&CPER_SEC_FW_ERR_REC_REF_GUID);
if (!status) {
printk(BIOS_ERR, "Error: unable to allocate GSB\n");
return;
}
if (cl_get_total_data_size() > bert_storage_remaining()) {
printk(BIOS_ERR, "Error: Crashlog entry would exceed "
"available region\n");
return;
}
cpu_record_size = cl_get_cpu_record_size();
if (cpu_record_size) {
cl_data = new_cper_fw_error_crashlog(status, cpu_record_size);
if (!cl_data) {
printk(BIOS_ERR, "Error: Crashlog CPU entry(size %lu) "
"would exceed available region\n",
cpu_record_size);
return;
}
printk(BIOS_DEBUG, "cl_data %p, cpu_record_size %lu\n",
cl_data, cpu_record_size);
cl_fill_cpu_records(cl_data);
}
pmc_record_size = cl_get_pmc_record_size();
if (pmc_record_size) {
/* Allocate new FW ERR structure in case CPU crashlog is present */
if (cpu_record_size && !bert_append_fw_err(status)) {
printk(BIOS_ERR, "Error: Crashlog PMC entry would "
"exceed available region\n");
return;
}
cl_data = new_cper_fw_error_crashlog(status, pmc_record_size);
if (!cl_data) {
printk(BIOS_ERR, "Error: Crashlog PMC entry(size %lu) "
"would exceed available region\n",
pmc_record_size);
return;
}
printk(BIOS_DEBUG, "cl_data %p, pmc_record_size %lu\n",
cl_data, pmc_record_size);
cl_fill_pmc_records(cl_data);
}
*length = status->raw_data_length;
*region = (void *)status;
}
bool acpi_is_boot_error_src_present(void)
{
if (!CONFIG(SOC_INTEL_CRASHLOG)) {
printk(BIOS_DEBUG, "Crashlog disabled.\n");
return false;
}
if (!discover_crashlog()) {
printk(BIOS_SPEW, "Crashlog discovery result: crashlog not found\n");
return false;
}
collect_pmc_and_cpu_crashlog_from_srams();
/* Discovery tables sizes can be larger than the actual valid collected data */
u32 crashlog_size = cl_get_total_data_size();
return (crashlog_size > 0);
}

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@ -0,0 +1 @@
ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_CRASHLOG) += crashlog.c

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@ -0,0 +1,536 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#include <console/console.h>
#include <cbmem.h>
#include <delay.h>
#include <intelblocks/crashlog.h>
#include <string.h>
int __weak cl_get_cpu_record_size(void)
{
return 0;
}
int __weak cl_get_pmc_record_size(void)
{
return 0;
}
u32 __weak cl_get_cpu_bar_addr(void)
{
return 0;
}
u32 __weak cl_get_cpu_tmp_bar(void)
{
return 0;
}
u32 __weak cl_get_cpu_mb_int_addr(void)
{
return 0;
}
int __weak cl_get_total_data_size(void)
{
return cl_get_cpu_record_size() + cl_get_pmc_record_size();
}
bool __weak cl_pmc_sram_has_mmio_access(void)
{
return false;
}
bool __weak cpu_crashlog_support(void)
{
return false;
}
bool __weak pmc_crashlog_support(void)
{
return false;
}
bool __weak cl_cpu_data_present(void)
{
return false;
}
bool __weak cl_pmc_data_present(void)
{
return false;
}
__weak void reset_discovery_buffers(void) {}
__weak void update_new_pmc_crashlog_size(u32 *pmc_crash_size) {}
__weak void update_new_cpu_crashlog_size(u32 *cpu_crash_size) {}
pmc_ipc_discovery_buf_t __weak cl_get_pmc_discovery_buf(void)
{
pmc_ipc_discovery_buf_t discov_buf;
memset(&discov_buf, 0, sizeof(pmc_ipc_discovery_buf_t));
return discov_buf;
}
pmc_crashlog_desc_table_t __weak cl_get_pmc_descriptor_table(void)
{
pmc_crashlog_desc_table_t desc_tab;
memset(&desc_tab, 0, sizeof(pmc_crashlog_desc_table_t));
return desc_tab;
}
cpu_crashlog_discovery_table_t __weak cl_get_cpu_discovery_table(void)
{
cpu_crashlog_discovery_table_t cpu_disc_tab;
memset(&cpu_disc_tab, 0, sizeof(cpu_crashlog_discovery_table_t));
return cpu_disc_tab;
}
int cpu_cl_poll_mailbox_ready(u32 cl_mailbox_addr)
{
cpu_crashlog_mailbox_t cl_mailbox_interface;
u16 stall_cnt = 0;
do {
cl_mailbox_interface.data = read32((u32 *)cl_mailbox_addr);
udelay(CPU_CRASHLOG_MAILBOX_WAIT_STALL);
stall_cnt++;
} while ((cl_mailbox_interface.fields.busy == 1)
&& stall_cnt < CPU_CRASHLOG_MAILBOX_WAIT_TIMEOUT);
if ((cl_mailbox_interface.fields.busy == 1)
&& (stall_cnt >= CPU_CRASHLOG_MAILBOX_WAIT_TIMEOUT)) {
printk(BIOS_ERR, "CPU crashlog mailbox timed out.\n");
return 0;
}
return 1;
}
int cpu_cl_mailbox_cmd(u8 cmd, u8 param)
{
cpu_crashlog_mailbox_t cl_mailbox_intf;
u32 cl_base_addr;
memset(&cl_mailbox_intf, 0, sizeof(cpu_crashlog_mailbox_t));
cl_base_addr = cl_get_cpu_bar_addr();
cl_mailbox_intf.fields.command = cmd;
cl_mailbox_intf.fields.param = param;
cl_mailbox_intf.fields.busy = 1;
write32((u32 *)(cl_base_addr + cl_get_cpu_mb_int_addr()),
cl_mailbox_intf.data);
cpu_cl_poll_mailbox_ready(cl_base_addr + cl_get_cpu_mb_int_addr());
return 1;
}
int cpu_cl_clear_data(void)
{
return cpu_cl_mailbox_cmd(CPU_CRASHLOG_CMD_CLEAR, 0);
}
int pmc_cl_gen_descriptor_table(u32 desc_table_addr,
pmc_crashlog_desc_table_t *descriptor_table)
{
int total_data_size = 0;
descriptor_table->numb_regions = read32((u32 *)desc_table_addr);
printk(BIOS_DEBUG, "CL PMC desc table: numb of regions is 0x%x at addr 0x%x\n",
descriptor_table->numb_regions, desc_table_addr);
for (int i = 0; i < descriptor_table->numb_regions; i++) {
desc_table_addr += 4;
descriptor_table->regions[i].data = read32((u32 *)(desc_table_addr));
total_data_size += descriptor_table->regions[i].bits.size * sizeof(u32);
printk(BIOS_DEBUG, "CL PMC desc table: region 0x%x has size 0x%x at offset 0x%x\n",
i, descriptor_table->regions[i].bits.size,
descriptor_table->regions[i].bits.offset);
if (i > 255) {
printk(BIOS_ERR, "More than 255 regions in PMC crashLog descriptor table");
break;
}
}
return total_data_size;
}
bool __weak pmc_cl_discovery(void)
{
return false;
}
bool __weak cpu_cl_discovery(void)
{
return false;
}
int cl_pmc_re_arm_after_reset(void)
{
const struct pmc_ipc_buffer *req = { 0 };
struct pmc_ipc_buffer *res = NULL;
uint32_t cmd_reg;
int r;
cmd_reg = pmc_make_ipc_cmd(PMC_IPC_CMD_CRASHLOG,
PMC_IPC_CMD_ID_CRASHLOG_RE_ARM_ON_RESET,
PMC_IPC_CMD_SIZE_SHIFT);
r = pmc_send_ipc_cmd(cmd_reg, req, res);
if (r < 0) {
printk(BIOS_ERR, "pmc_send_ipc_cmd failed in %s\n", __func__);
return 0;
}
return r;
}
/* Sends PMC IPC to clear CrashLog from PMC SSRAM area */
int cl_pmc_clear(void)
{
const struct pmc_ipc_buffer *req = { 0 };
struct pmc_ipc_buffer *res = NULL;
uint32_t cmd_reg;
int r;
cmd_reg = pmc_make_ipc_cmd(PMC_IPC_CMD_CRASHLOG,
PMC_IPC_CMD_ID_CRASHLOG_ERASE,
PMC_IPC_CMD_SIZE_SHIFT);
r = pmc_send_ipc_cmd(cmd_reg, req, res);
if (r < 0) {
printk(BIOS_ERR, "pmc_send_ipc_cmd failed in %s\n", __func__);
return 0;
}
return r;
}
/*
* Sends PMC IPC to populate CrashLog on all reboot.
* The SSRAM area will be cleared on G3 by PMC automatically
*/
int cl_pmc_en_gen_on_all_reboot(void)
{
const struct pmc_ipc_buffer *req = { 0 };
struct pmc_ipc_buffer *res = NULL;
uint32_t cmd_reg;
int r;
cmd_reg = pmc_make_ipc_cmd(PMC_IPC_CMD_CRASHLOG,
PMC_IPC_CMD_ID_CRASHLOG_ON_RESET,
PMC_IPC_CMD_SIZE_SHIFT);
r = pmc_send_ipc_cmd(cmd_reg, req, res);
if (r < 0) {
printk(BIOS_ERR, "pmc_send_ipc_cmd failed in %s\n", __func__);
return 0;
}
return r;
}
bool discover_crashlog(void)
{
bool cpu_cl_discovered = false, pmc_cl_discovered = false;
reset_discovery_buffers();
/* PCH crashLog discovery */
pmc_cl_discovered = pmc_cl_discovery();
/* CPU crashLog discovery */
cpu_cl_discovered = cpu_cl_discovery();
return (cpu_cl_discovered || pmc_cl_discovered);
}
bool cl_copy_data_from_sram(u32 src_bar,
u32 offset,
u32 size,
u32 *dest_addr,
u32 buffer_index,
bool pmc_sram)
{
if (src_bar == 0) {
printk(BIOS_ERR, "Invalid bar 0x%x and offset 0x%x for %s\n",
src_bar, offset, __func__);
return false;
}
u32 src_addr = src_bar + offset;
u32 data = read32((u32 *)src_addr);
/* PMC: copy if 1st DWORD in buffer is not zero and its 31st bit is not set */
if (pmc_sram && !(data && !(data & BIT(31)))) {
printk(BIOS_DEBUG, "Invalid data 0x%x at offset 0x%x from addr 0x%x"
" of PMC SRAM.\n", data, offset, src_bar);
return false;
}
/*CPU: don't copy if 1st DWORD in first buffer is zero */
if (!pmc_sram && !data && (buffer_index == 0)) {
printk(BIOS_DEBUG, "Invalid data 0x%x at offset 0x%x from addr 0x%x"
" of telemetry SRAM.\n", data, offset, src_bar);
return false;
}
u32 copied = 0;
while (copied < size) {
/* DW by DW copy: byte access to PMC SRAM not allowed */
*dest_addr = read32((u32 *)src_addr);
dest_addr++;
src_addr += 4;
copied++;
}
return true;
}
void cl_get_pmc_sram_data(void)
{
u32 *dest = NULL;
u32 tmp_bar_addr = cl_get_cpu_tmp_bar();
u32 pmc_crashLog_size = cl_get_pmc_record_size();
if (!cl_pmc_sram_has_mmio_access())
return;
pmc_ipc_discovery_buf_t discovery_buf = cl_get_pmc_discovery_buf();
if (discovery_buf.bits.supported != 1) {
printk(BIOS_DEBUG, "PCH crashlog feature not supported.\n");
goto pmc_send_re_arm_after_reset;
}
/* Get the size of data to copy */
if (discovery_buf.bits.discov_mechanism == 1) {
if (discovery_buf.bits.base_offset & BIT(31)) {
printk(BIOS_DEBUG, "PCH discovery to be used is disabled.\n");
goto pmc_send_re_arm_after_reset;
}
printk(BIOS_DEBUG, "PMC crashLog size in discovery mode : 0x%X\n",
pmc_crashLog_size);
} else {
if (discovery_buf.bits.dis) {
printk(BIOS_DEBUG, "PCH crashlog is disabled in legacy mode.\n");
return;
}
pmc_crashLog_size = (discovery_buf.bits.size != 0) ?
discovery_buf.bits.size : 0xC00;
printk(BIOS_DEBUG, "PMC crashLog size in legacy mode : 0x%X\n",
pmc_crashLog_size);
}
/* allocate mem for the record to be copied */
unsigned long pmc_cl_cbmem_addr;
pmc_cl_cbmem_addr = (unsigned long) cbmem_add(CBMEM_ID_PMC_CRASHLOG,
pmc_crashLog_size);
if (!pmc_cl_cbmem_addr) {
printk(BIOS_ERR, "Unable to allocate CBMEM PMC crashLog entry.\n");
return;
}
memset((void *)pmc_cl_cbmem_addr, 0, pmc_crashLog_size);
dest = (u32 *)(uintptr_t) pmc_cl_cbmem_addr;
bool pmc_sram = true;
pmc_crashlog_desc_table_t descriptor_table = cl_get_pmc_descriptor_table();
if (discovery_buf.bits.discov_mechanism == 1) {
for (int i = 0; i < descriptor_table.numb_regions; i++) {
if (cl_copy_data_from_sram(tmp_bar_addr,
descriptor_table.regions[i].bits.offset,
descriptor_table.regions[i].bits.size,
dest,
i,
pmc_sram)) {
dest = (u32 *)((u32)dest +
(descriptor_table.regions[i].bits.size
* sizeof(u32)));
} else {
pmc_crashLog_size -= descriptor_table.regions[i].bits.size *
sizeof(u32);
printk(BIOS_DEBUG, "discover mode PMC crashlog size adjusted"
" to: 0x%x\n", pmc_crashLog_size);
}
}
} else {
if (!cl_copy_data_from_sram(tmp_bar_addr,
discovery_buf.bits.base_offset,
discovery_buf.bits.size,
dest,
0,
pmc_sram)) {
pmc_crashLog_size -= discovery_buf.bits.size * sizeof(u32);
printk(BIOS_DEBUG, "legacy mode PMC crashlog size adjusted to: 0x%x\n",
pmc_crashLog_size);
}
}
update_new_pmc_crashlog_size(&pmc_crashLog_size);
pmc_send_re_arm_after_reset:
/* when bit 7 of discov cmd resp is set -> bit 2 of size field */
if (discovery_buf.bits.size & BIT(2))
cl_pmc_re_arm_after_reset();
/* Clear the SSRAM region after copying the error log */
cl_pmc_clear();
}
void cl_get_cpu_sram_data(void)
{
u32 tmp_bar_addr = 0;
u32 *dest = NULL;
u32 m_cpu_crashLog_size = cl_get_cpu_record_size();
cpu_crashlog_discovery_table_t cpu_cl_disc_tab = cl_get_cpu_discovery_table();
if (m_cpu_crashLog_size < 1) {
printk(BIOS_DEBUG, "%s: no data to collect.\n", __func__);
return;
}
printk(BIOS_DEBUG, "CPU crash data size: 0x%X bytes in 0x%X region(s).\n",
m_cpu_crashLog_size, cpu_cl_disc_tab.header.fields.count);
/* allocate memory buffers for CPU crashog data to be copied */
unsigned long cpu_crashlog_cbmem_addr;
cpu_crashlog_cbmem_addr = (unsigned long) cbmem_add(CBMEM_ID_CPU_CRASHLOG,
m_cpu_crashLog_size);
if (!cpu_crashlog_cbmem_addr) {
printk(BIOS_ERR, "Failed to add CPU main crashLog entries to CBMEM.\n");
return;
}
memset((void *) cpu_crashlog_cbmem_addr, 0, m_cpu_crashLog_size);
tmp_bar_addr = cl_get_cpu_bar_addr();
dest = (u32 *)(uintptr_t) cpu_crashlog_cbmem_addr;
bool pmc_sram = false;
cpu_crashlog_buffer_info_t buff_info;
for (int i = 0 ; i < cpu_cl_disc_tab.header.fields.count ; i++) {
buff_info = cpu_cl_disc_tab.buffers[i];
if (cl_copy_data_from_sram(tmp_bar_addr,
cpu_cl_disc_tab.buffers[i].fields.offset,
cpu_cl_disc_tab.buffers[i].fields.size,
dest,
i,
pmc_sram)) {
dest = (u32 *)((u32)dest +
(cpu_cl_disc_tab.buffers[i].fields.size * sizeof(u32)));
} else {
m_cpu_crashLog_size -= cpu_cl_disc_tab.buffers[i].fields.size
* sizeof(u32);
/* for CPU skip all buffers if the 1st one is not valid */
if (i == 0) {
m_cpu_crashLog_size = 0;
break;
}
}
}
update_new_cpu_crashlog_size(&m_cpu_crashLog_size);
/* clear telemetry SRAM region */
cpu_cl_clear_data();
}
void collect_pmc_and_cpu_crashlog_from_srams(void)
{
if (pmc_crashlog_support() && cl_pmc_data_present()
&& (cl_get_pmc_record_size() > 0)) {
cl_pmc_en_gen_on_all_reboot();
printk(BIOS_DEBUG, "Crashlog collection enabled on every reboot.\n");
cl_get_pmc_sram_data();
} else {
printk(BIOS_DEBUG, "Skipping PMC crashLog collection. Data not present.\n");
}
printk(BIOS_DEBUG, "m_cpu_crashLog_size : 0x%X bytes\n", cl_get_cpu_record_size());
if (cpu_crashlog_support() && cl_cpu_data_present()
&& (cl_get_cpu_record_size() > 0)) {
printk(BIOS_DEBUG, "CPU crashLog present.\n");
cl_get_cpu_sram_data();
} else {
printk(BIOS_DEBUG, "Skipping CPU crashLog collection. Data not present.\n");
}
}
bool cl_fill_cpu_records(void *cl_record)
{
void *cl_src_addr = NULL;
u32 m_cpu_crashLog_size = cl_get_cpu_record_size();
if (!cl_cpu_data_present() || m_cpu_crashLog_size == 0) {
printk(BIOS_DEBUG, "CPU crashLog not present, skipping.\n");
return false;
}
printk(BIOS_DEBUG, "CPU crash data collection.\n");
cl_src_addr = cbmem_find(CBMEM_ID_CPU_CRASHLOG);
memcpy(cl_record, cl_src_addr, m_cpu_crashLog_size);
return true;
}
bool cl_fill_pmc_records(void *cl_record)
{
void *cl_src_addr = NULL;
u32 m_pmc_crashLog_size = cl_get_pmc_record_size();
if (!cl_pmc_data_present() || m_pmc_crashLog_size == 0) {
printk(BIOS_DEBUG, "PMC crashLog not present, skipping.\n");
return false;
}
printk(BIOS_DEBUG, "PMC crash data collection.\n");
cl_src_addr = cbmem_find(CBMEM_ID_PMC_CRASHLOG);
memcpy(cl_record, cl_src_addr, m_pmc_crashLog_size);
return true;
}

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@ -0,0 +1,183 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef SOC_INTEL_COMMON_BLOCK_CRASHLOG_H
#define SOC_INTEL_COMMON_BLOCK_CRASHLOG_H
#include <console/console.h>
#include <device/pci_ops.h>
#include <device/pci_def.h>
#include <device/mmio.h>
#include <fsp/util.h>
#include <intelblocks/pmc_ipc.h>
#include <types.h>
#include <arch/io.h>
/* PMC CrashLog Command */
#define PMC_IPC_CMD_CRASHLOG 0xA6
#define PMC_IPC_CMD_ID_CRASHLOG_DISCOVERY 0x01
#define PMC_IPC_CMD_ID_CRASHLOG_DISABLE 0x02
#define PMC_IPC_CMD_ID_CRASHLOG_ERASE 0x04
#define PMC_IPC_CMD_ID_CRASHLOG_ON_RESET 0x05
#define PMC_IPC_CMD_ID_CRASHLOG_RE_ARM_ON_RESET 0x06
/* CPU CrashLog Mailbox commands */
#define CPU_CRASHLOG_CMD_DISABLE 0
#define CPU_CRASHLOG_CMD_CLEAR 2
#define CPU_CRASHLOG_MAILBOX_WAIT_STALL 1
#define CPU_CRASHLOG_MAILBOX_WAIT_TIMEOUT 1000
#define CPU_CRASHLOG_DISC_TAB_GUID_VALID 0x1600
#define CRASHLOG_SIZE_DEBUG_PURPOSE 0x640
/* PMC crashlog discovery structs */
typedef union {
struct {
u16 offset;
u16 size;
} bits;
u32 data;
} __packed pmc_crashlog_discov_region_t;
typedef struct {
u32 numb_regions;
pmc_crashlog_discov_region_t regions[256];
} __packed pmc_crashlog_desc_table_t;
typedef union {
struct {
u32 supported :1;
u32 dis :1;
u32 discov_mechanism :2;
u32 size :12;
u32 base_offset :16; /* Start offset of CrashLog in PMC SSRAM */
u32 rsv :16;
u32 desc_tabl_offset :16; /* start offset of descriptor table */
} bits;
u64 val_64_bits;
} __packed pmc_ipc_discovery_buf_t;
/* CPU/TELEMETRY crashlog discovery structs */
typedef union {
struct {
u32 pcie_cap_id :16;
u32 cap_ver :4;
u32 next_cap_offset :12;
} fields;
u32 data;
} __packed cap_data_t;
typedef union {
struct {
u64 devsc_ven_id :16;
u64 devsc_ver :4;
u64 devsc_len :12;
u64 devsc_id :16;
u64 num_entries :8; /*Numb of telemetry aggregators in lookup table. */
u64 entries_size :8; /* Entry Size in DWORDS */
} fields;
u64 data_64;
u32 data_32[2];
} __packed devsc_data_t;
typedef union {
struct {
u32 t_bir_q :3; /* tBIR, The BAR to be used */
u32 discovery_table_offset :29;
} fields;
u32 data;
} __packed discovery_data_t;
typedef struct {
cap_data_t cap_data;
devsc_data_t devsc_data;
discovery_data_t discovery_data;
} __packed tel_crashlog_devsc_cap_t;
typedef union {
struct {
u64 access_type :4;
u64 crash_type :4;
u64 count :8;
u64 reserved :16;
u64 guid :32;
} fields;
u64 data;
} __packed cpu_crashlog_header_t;
/* Structures for CPU CrashLog mailbox interface */
typedef union {
struct {
u32 command :8;
u32 param :8;
u32 reserved :15;
u32 busy :1;
} fields;
u32 data;
} __packed cpu_crashlog_mailbox_t;
typedef union {
struct {
u32 offset :32;
u32 size :16;
u32 reserved :16;
} fields;
u64 data;
} __packed cpu_crashlog_buffer_info_t;
typedef struct {
cpu_crashlog_header_t header;
cpu_crashlog_mailbox_t cmd_mailbox;
u32 mailbox_data;
cpu_crashlog_buffer_info_t buffers[256];
} __packed cpu_crashlog_discovery_table_t;
int cl_get_cpu_record_size(void);
int cl_get_pmc_record_size(void);
u32 cl_get_cpu_bar_addr(void);
u32 cl_get_cpu_tmp_bar(void);
u32 cl_get_cpu_mb_int_addr(void);
int cl_get_total_data_size(void);
bool cl_pmc_sram_has_mmio_access(void);
bool cpu_crashlog_support(void);
bool pmc_crashlog_support(void);
bool cl_cpu_data_present(void);
bool cl_pmc_data_present(void);
void cl_get_cpu_sram_data(void);
void cl_get_pmc_sram_data(void);
void reset_discovery_buffers(void);
void update_new_pmc_crashlog_size(u32 *pmc_crash_size);
void update_new_cpu_crashlog_size(u32 *cpu_crash_size);
pmc_ipc_discovery_buf_t cl_get_pmc_discovery_buf(void);
pmc_crashlog_desc_table_t cl_get_pmc_descriptor_table(void);
cpu_crashlog_discovery_table_t cl_get_cpu_discovery_table(void);
u32 cl_gen_cpu_bar_addr(void);
int cpu_cl_poll_mailbox_ready(u32 cl_mailbox_addr);
int cpu_cl_mailbox_cmd(u8 cmd, u8 param);
int cpu_cl_clear_data(void);
int pmc_cl_gen_descriptor_table(u32 desc_table_addr,
pmc_crashlog_desc_table_t *descriptor_table);
bool pmc_cl_discovery(void);
bool cpu_cl_discovery(void);
int cl_pmc_re_arm_after_reset(void);
int cl_pmc_clear(void);
int cl_pmc_en_gen_on_all_reboot(void);
bool discover_crashlog(void);
bool cl_copy_data_from_sram(u32 src_bar,
u32 offset,
u32 size,
u32 *dest_addr,
u32 buffer_index,
bool pmc_sram);
void collect_pmc_and_cpu_crashlog_from_srams(void);
bool cl_fill_cpu_records(void *cl_record);
bool cl_fill_pmc_records(void *cl_record);
static const EFI_GUID FW_ERR_SECTION_GUID = {
0x81212a96, 0x09ed, 0x4996,
{ 0x94, 0x71, 0x8d, 0x72, 0x9c, 0x8e, 0x69, 0xed }
};
#endif /* SOC_INTEL_COMMON_BLOCK_CRASHLOG */

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@ -17,7 +17,7 @@
#define PMC_IPC_CMD_SIZE_MASK 0xff
#define PMC_IPC_CMD_FIELD(name, val) \
(((val) & PMC_IPC_CMD_##name##_MASK << PMC_IPC_CMD_##name##_SHIFT))
((((val) & PMC_IPC_CMD_##name##_MASK) << PMC_IPC_CMD_##name##_SHIFT))
#define PMC_IPC_CMD_NO_MSI 0

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@ -255,4 +255,11 @@ config MRC_CHANNEL_WIDTH
int
default 16
config SOC_INTEL_CRASHLOG
def_bool n
select SOC_INTEL_COMMON_BLOCK_CRASHLOG
select ACPI_BERT
help
Enables CrashLog.
endif

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@ -46,6 +46,7 @@ ramstage-y += soundwire.c
ramstage-y += systemagent.c
ramstage-y += me.c
ramstage-y += xhci.c
ramstage-$(CONFIG_SOC_INTEL_CRASHLOG) += crashlog_lib.c
smm-y += gpio.c
smm-y += p2sb.c

View File

@ -0,0 +1,320 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#include <console/console.h>
#include <cbmem.h>
#include <delay.h>
#include <intelblocks/crashlog.h>
#include <string.h>
#include <soc/crashlog.h>
#include <arch/bert_storage.h>
#include <soc/iomap.h>
#include <soc/pci_devs.h>
/* global crashLog info */
static bool m_pmc_crashLog_support;
static bool m_pmc_crashLog_present;
static bool m_cpu_crashLog_support;
static bool m_cpu_crashLog_present;
static u32 m_pmc_crashLog_size;
static u32 m_cpu_crashLog_size;
static u32 cpu_crash_version;
static pmc_ipc_discovery_buf_t discovery_buf;
static pmc_crashlog_desc_table_t descriptor_table;
static tel_crashlog_devsc_cap_t cpu_cl_devsc_cap;
static cpu_crashlog_discovery_table_t cpu_cl_disc_tab;
u32 __weak cl_get_cpu_mb_int_addr(void)
{
return CRASHLOG_MAILBOX_INTF_ADDRESS;
}
bool pmc_cl_discovery(void)
{
u32 tmp_bar_addr = 0, desc_table_addr = 0;
const struct pmc_ipc_buffer *req = { 0 };
struct pmc_ipc_buffer *res = NULL;
uint32_t cmd_reg;
int r;
cmd_reg = pmc_make_ipc_cmd(PMC_IPC_CMD_CRASHLOG,
PMC_IPC_CMD_ID_CRASHLOG_DISCOVERY,
PMC_IPC_CMD_SIZE_SHIFT);
printk(BIOS_DEBUG, "cmd_reg from pmc_make_ipc_cmd %d\n", cmd_reg);
r = pmc_send_ipc_cmd(cmd_reg, req, res);
if (r < 0) {
printk(BIOS_ERR, "pmc_send_ipc_cmd failed in %s\n", __func__);
return false;
}
discovery_buf.val_64_bits = ((u64)res->buf[1] << 32) | res->buf[0];
if (discovery_buf.bits.supported != 1) {
printk(BIOS_DEBUG, "PCH crashlog feature not supported.\n");
m_pmc_crashLog_support = false;
return false;
}
m_pmc_crashLog_support = true;
/* Program BAR 0 and enable command register memory space decoding */
tmp_bar_addr = SPI_BASE_ADDRESS;
pci_write_config32(PCH_DEV_SRAM, PCI_BASE_ADDRESS_0, tmp_bar_addr);
pci_or_config16(PCH_DEV_SRAM, PCI_COMMAND, PCI_COMMAND_MEMORY);
if (discovery_buf.bits.discov_mechanism == 1) {
/* discovery mode */
if (discovery_buf.bits.base_offset & BIT(31)) {
printk(BIOS_DEBUG, "PCH discovery to be used is disabled.\n");
m_pmc_crashLog_present = false;
m_pmc_crashLog_size = 0;
return false;
}
desc_table_addr = tmp_bar_addr + discovery_buf.bits.desc_tabl_offset;
m_pmc_crashLog_size = pmc_cl_gen_descriptor_table(desc_table_addr,
&descriptor_table);
printk(BIOS_DEBUG, "PMC crashLog size in discovery mode : 0x%X\n",
m_pmc_crashLog_size);
} else {
/* legacy mode */
if (discovery_buf.bits.dis) {
printk(BIOS_DEBUG, "PCH crashlog is disabled in legacy mode.\n");
m_pmc_crashLog_present = false;
return false;
}
m_pmc_crashLog_size = (discovery_buf.bits.size != 0) ?
(discovery_buf.bits.size * sizeof(u32)) : 0xC00;
printk(BIOS_DEBUG, "PMC crashlog size in legacy mode = 0x%x\n",
m_pmc_crashLog_size);
}
m_pmc_crashLog_present = true;
return true;
}
u32 cl_get_cpu_bar_addr(void)
{
u32 base_addr = 0;
if (cpu_cl_devsc_cap.discovery_data.fields.t_bir_q == TEL_DVSEC_TBIR_BAR0) {
base_addr = pci_read_config32(SA_DEV_TMT, PCI_BASE_ADDRESS_0) &
~PCI_BASE_ADDRESS_MEM_ATTR_MASK;
} else if (cpu_cl_devsc_cap.discovery_data.fields.t_bir_q == TEL_DVSEC_TBIR_BAR1) {
base_addr = pci_read_config32(SA_DEV_TMT, PCI_BASE_ADDRESS_1) &
~PCI_BASE_ADDRESS_MEM_ATTR_MASK;
} else {
printk(BIOS_ERR, "Invalid TEL_CFG_BAR value %d:\n",
cpu_cl_devsc_cap.discovery_data.fields.t_bir_q);
}
return base_addr;
}
u32 cl_get_cpu_tmp_bar(void)
{
return SPI_BASE_ADDRESS;
}
bool cl_pmc_sram_has_mmio_access(void)
{
if (pci_read_config16(PCH_DEV_SRAM, PCI_VENDOR_ID) == 0xFFFF) {
printk(BIOS_ERR, "PMC SSRAM PCI device is disabled.\n");
return false;
}
return true;
}
static bool cpu_cl_get_capability(tel_crashlog_devsc_cap_t *cl_devsc_cap)
{
cl_devsc_cap->cap_data.data = pci_read_config32(SA_DEV_TMT,
TEL_DVSEC_OFFSET + TEL_DVSEC_PCIE_CAP_ID);
if (cl_devsc_cap->cap_data.fields.pcie_cap_id != TELEMETRY_EXTENDED_CAP_ID) {
printk(BIOS_DEBUG, "Read ID for Telemetry: 0x%x differs from expected: 0x%x\n",
cl_devsc_cap->cap_data.fields.pcie_cap_id, TELEMETRY_EXTENDED_CAP_ID);
return false;
}
/* walk through the entries until crashLog entry */
cl_devsc_cap->devsc_data.data_32[1] = pci_read_config32(SA_DEV_TMT, TEL_DVSEV_ID);
int new_offset = 0;
while (cl_devsc_cap->devsc_data.fields.devsc_id != CRASHLOG_DVSEC_ID) {
if (cl_devsc_cap->cap_data.fields.next_cap_offset == 0
|| cl_devsc_cap->cap_data.fields.next_cap_offset == 0xFFFF) {
printk(BIOS_DEBUG, "Read invalid pcie_cap_id value: : 0x%x\n",
cl_devsc_cap->cap_data.fields.pcie_cap_id);
return false;
}
new_offset = cl_devsc_cap->cap_data.fields.next_cap_offset;
cl_devsc_cap->cap_data.data = pci_read_config32(SA_DEV_TMT,
new_offset + TEL_DVSEC_PCIE_CAP_ID);
cl_devsc_cap->devsc_data.data_32[1] = pci_read_config32(SA_DEV_TMT,
new_offset + TEL_DVSEV_ID);
}
cpu_crash_version = cl_devsc_cap->devsc_data.fields.devsc_ver;
cl_devsc_cap->discovery_data.data = pci_read_config32(SA_DEV_TMT, new_offset
+ TEL_DVSEV_DISCOVERY_TABLE_OFFSET);
return true;
}
static bool cpu_cl_gen_discovery_table(void)
{
u32 bar_addr = 0, disc_tab_addr = 0;
bar_addr = cl_get_cpu_bar_addr();
disc_tab_addr = bar_addr +
cpu_cl_devsc_cap.discovery_data.fields.discovery_table_offset;
memset(&cpu_cl_disc_tab, 0, sizeof(cpu_crashlog_discovery_table_t));
cpu_cl_disc_tab.header.data = ((u64)read32((u32 *)disc_tab_addr) +
((u64)read32((u32 *)(disc_tab_addr + 4)) << 32));
cpu_cl_disc_tab.cmd_mailbox.data = read32((u32 *)(disc_tab_addr + 8));
cpu_cl_disc_tab.mailbox_data = read32((u32 *)(disc_tab_addr + 12));
printk(BIOS_DEBUG, "cpu_crashlog_discovery_table buffer count: 0x%x\n",
cpu_cl_disc_tab.header.fields.count);
if (cpu_cl_disc_tab.header.fields.guid != CPU_CRASHLOG_DISC_TAB_GUID_VALID) {
printk(BIOS_ERR, "Invalid CPU crashlog discovery table GUID, expected = 0x%X ,"
"actual = 0x%X\n", CPU_CRASHLOG_DISC_TAB_GUID_VALID,
cpu_cl_disc_tab.header.fields.guid);
return false;
}
int cur_offset = 0;
for (int i = 0; i < cpu_cl_disc_tab.header.fields.count ; i++) {
cur_offset = 16 + 8*i;
cpu_cl_disc_tab.buffers[i].data = ((u64)read32((u32 *)(disc_tab_addr +
cur_offset)) + ((u64)read32((u32 *)
(disc_tab_addr + cur_offset + 4)) << 32));
printk(BIOS_DEBUG, "cpu_crashlog_discovery_table buffer: 0x%x size:"
"0x%x offset: 0x%x\n", i, cpu_cl_disc_tab.buffers[i].fields.size,
cpu_cl_disc_tab.buffers[i].fields.offset);
m_cpu_crashLog_size += cpu_cl_disc_tab.buffers[i].fields.size * sizeof(u32);
}
m_cpu_crashLog_present = m_cpu_crashLog_size > 0;
return true;
}
bool cpu_cl_discovery(void)
{
memset(&cpu_cl_devsc_cap, 0, sizeof(tel_crashlog_devsc_cap_t));
if (!cpu_cl_get_capability(&cpu_cl_devsc_cap)) {
printk(BIOS_ERR, "CPU crashlog capability not found.\n");
m_cpu_crashLog_support = false;
return false;
}
m_cpu_crashLog_support = true;
/* Program BAR address and enable command register memory space decoding */
u32 tmp_bar_addr = PCH_PWRM_BASE_ADDRESS;
printk(BIOS_DEBUG, "tmp_bar_addr: 0x%X\n", tmp_bar_addr);
if (cpu_cl_devsc_cap.discovery_data.fields.t_bir_q == TEL_DVSEC_TBIR_BAR0) {
pci_write_config32(SA_DEV_TMT, TEL_CFG_BAR0, tmp_bar_addr);
} else if (cpu_cl_devsc_cap.discovery_data.fields.t_bir_q == TEL_DVSEC_TBIR_BAR1) {
pci_write_config32(SA_DEV_TMT, TEL_CFG_BAR1, tmp_bar_addr);
} else {
printk(BIOS_DEBUG, "invalid discovery data t_bir_q: 0x%x\n",
cpu_cl_devsc_cap.discovery_data.fields.t_bir_q);
return false;
}
pci_or_config16(SA_DEV_TMT, PCI_COMMAND, PCI_COMMAND_MEMORY);
if (!cpu_cl_gen_discovery_table()) {
printk(BIOS_ERR, "CPU crashlog discovery table not valid.\n");
m_cpu_crashLog_present = false;
return false;
}
m_cpu_crashLog_present = true;
return true;
}
void reset_discovery_buffers(void)
{
memset(&discovery_buf, 0, sizeof(pmc_ipc_discovery_buf_t));
memset(&descriptor_table, 0, sizeof(pmc_crashlog_desc_table_t));
memset(&cpu_cl_devsc_cap, 0, sizeof(tel_crashlog_devsc_cap_t));
}
int cl_get_total_data_size(void)
{
return m_pmc_crashLog_size + m_cpu_crashLog_size;
}
pmc_ipc_discovery_buf_t cl_get_pmc_discovery_buf(void)
{
return discovery_buf;
}
pmc_crashlog_desc_table_t cl_get_pmc_descriptor_table(void)
{
return descriptor_table;
}
int cl_get_pmc_record_size(void)
{
return m_pmc_crashLog_size;
}
int cl_get_cpu_record_size(void)
{
return m_cpu_crashLog_size;
}
bool cl_cpu_data_present(void)
{
return m_cpu_crashLog_present;
}
bool cl_pmc_data_present(void)
{
return m_pmc_crashLog_present;
}
bool cpu_crashlog_support(void)
{
return m_cpu_crashLog_support;
}
bool pmc_crashlog_support(void)
{
return m_pmc_crashLog_support;
}
void update_new_pmc_crashlog_size(u32 *pmc_crash_size)
{
m_pmc_crashLog_size = *pmc_crash_size;
}
cpu_crashlog_discovery_table_t cl_get_cpu_discovery_table(void)
{
return cpu_cl_disc_tab;
}
void update_new_cpu_crashlog_size(u32 *cpu_crash_size)
{
m_cpu_crashLog_size = *cpu_crash_size;
}

View File

@ -0,0 +1,24 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef _SOC_COMMON_BLOCK_CRASHLOG_LIB_H_
#define _SOC_COMMON_BLOCK_CRASHLIB_LIB_H_
#include <types.h>
/* DVSEC capability Registers */
#define TEL_DVSEC_OFFSET 0x100
#define TEL_DVSEC_PCIE_CAP_ID 0x0
#define TEL_DVSEC_NEXT_CAP 0x2
#define TEL_DVSEV_ID 0x8
#define TEL_DVSEV_DISCOVERY_TABLE_OFFSET 0xC
#define TELEMETRY_EXTENDED_CAP_ID 0x23
#define CRASHLOG_DVSEC_ID 0x04
#define TEL_DVSEC_TBIR_BAR0 0
#define TEL_DVSEC_TBIR_BAR1 1
/* CPU CrashLog MMIO Registers */
#define CRASHLOG_MAILBOX_INTF_ADDRESS 0x6038
#define CRASHLOG_POINTER_SIZE_FIELD_OFFSET 0x04
#endif /* _SOC_COMMON_BLOCK_CRASHLOG_LIB_H_ */

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@ -5,12 +5,15 @@
#include <device/pci_def.h>
#define _SA_DEVFN(slot) PCI_DEVFN(SA_DEV_SLOT_ ## slot, 0)
#define _PCH_DEVFN(slot, func) PCI_DEVFN(PCH_DEV_SLOT_ ## slot, func)
#if !defined(__SIMPLE_DEVICE__)
#include <device/device.h>
#define _SA_DEV(slot) pcidev_path_on_root(_SA_DEVFN(slot))
#define _PCH_DEV(slot, func) pcidev_path_on_root_debug(_PCH_DEVFN(slot, func), __func__)
#else
#define _SA_DEV(slot) PCI_DEV(0, SA_DEV_SLOT_ ## slot, 0)
#define _PCH_DEV(slot, func) PCI_DEV(0, PCH_DEV_SLOT_ ## slot, func)
#endif
@ -49,6 +52,10 @@
#define SA_DEV_TBT2 PCI_DEV(0, SA_DEV_SLOT_TBT, 2)
#define SA_DEV_TBT3 PCI_DEV(0, SA_DEV_SLOT_TBT, 3)
#define SA_DEV_SLOT_TMT 0x0A
#define SA_DEVFN_TMT _SA_DEVFN(TMT)
#define SA_DEV_TMT _SA_DEV(TMT)
#define SA_DEV_SLOT_TCSS 0x0d
#define NUM_TCSS_DMA_FUNCTIONS 2
#define SA_DEVFN_TCSS_DMA(x) PCI_DEVFN(SA_DEV_SLOT_TCSS, ((x) + 2))

View File

@ -215,6 +215,12 @@ static void soc_memory_init_params(FSP_M_CONFIG *m_cfg,
/* Change TmeEnable UPD value according to INTEL_TME Kconfig */
m_cfg->TmeEnable = CONFIG(INTEL_TME);
/* crashLog config */
if (CONFIG(SOC_INTEL_CRASHLOG)) {
m_cfg->CpuCrashLogDevice = 1;
m_cfg->CpuCrashLogEnable = 1;
}
}
void platform_fsp_memory_init_params_cb(FSPM_UPD *mupd, uint32_t version)

View File

@ -72,9 +72,11 @@ typedef struct {
**/
UINT8 EnableAbove4GBMmio;
/** Offset 0x004B - Reserved
/** Offset 0x004B - Enable/Disable CrashLog Device 10
Enable(Default): Enable CPU CrashLog Device 10, Disable: Disable CPU CrashLog
$EN_DIS
**/
UINT8 Reserved0;
UINT8 CpuCrashLogDevice;
/** Offset 0x004C - MemorySpdPtr00
**/