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drivers/ocp/ewl: Add EWL driver for EWL type 3 error handling 

1. Restore the reverted 'commit 059902882c ("drivers/ocp/ewl: Add EWL
driver for EWL type 3 error handling")'.

2. Print more EWL type 3 error information when it occurs.

Change-Id: Ib83b7653a839d18a065b929127549acd10bce7a7
Signed-off-by: Johnny Lin <johnny_lin@wiwynn.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69280
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jonathan Zhang <jon.zhixiong.zhang@gmail.com>
This commit is contained in:
Johnny Lin 2022-11-07 11:41:52 +08:00 committed by Felix Held
parent b3907c74d5
commit e0b1406276
4 changed files with 77 additions and 0 deletions
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5
src/drivers/ocp/ewl/Kconfig Normal file
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@ -0,0 +1,5 @@
config OCP_EWL
bool
default n
help
It implements checking FSP Enhanced Warning Log Hob.

1
src/drivers/ocp/ewl/Makefile.inc Normal file
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@ -0,0 +1 @@
romstage-$(CONFIG_OCP_EWL) += ewl.c

61
src/drivers/ocp/ewl/ewl.c Normal file
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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <soc/soc_util.h>
#include <lib.h>
#include "ocp_ewl.h"
static void process_ewl_type3(EWL_ENTRY_HEADER *header, EWL_ENTRY_MEMORY_LOCATION memory_location)
{
/* Treat warning as type 3, collect basic information and print to serial log */
EWL_ENTRY_TYPE3 *basic_warning;
basic_warning = (EWL_ENTRY_TYPE3 *)header;
printk(BIOS_ERR, "Major Warning Code = 0x%02x, Minor Warning Code = 0x%02x,\n",
basic_warning->Context.MajorWarningCode,
basic_warning->Context.MinorWarningCode);
printk(BIOS_ERR, "Major Checkpoint: 0x%02x\n", basic_warning->Context.MajorCheckpoint);
printk(BIOS_ERR, "Minor Checkpoint: 0x%02x\n", basic_warning->Context.MinorCheckpoint);
if (memory_location.Socket != 0xff)
printk(BIOS_ERR, "Socket %d\n", memory_location.Socket);
if (memory_location.Channel != 0xff)
printk(BIOS_ERR, "Channel %d\n", memory_location.Channel);
if (memory_location.Dimm != 0xff)
printk(BIOS_ERR, "Dimm %d\n", memory_location.Dimm);
if (memory_location.Rank != 0xff)
printk(BIOS_ERR, "Rank %d\n", memory_location.Rank);
}
void get_ewl(void)
{
const EWL_PRIVATE_DATA *hob = get_ewl_hob();
int offset = 0;
bool type3_flag = 0;
EWL_ENTRY_HEADER *warning_header;
printk(BIOS_DEBUG, "Number of EWL entries %d\n", hob->numEntries);
while (offset < hob->status.Header.FreeOffset) {
warning_header = (EWL_ENTRY_HEADER *) &(hob->status.Buffer[offset]);
if (warning_header->Type == EwlType3) {
printk(BIOS_ERR, "EWL type: %d size:%d severity level:%d\n",
warning_header->Type,
warning_header->Size,
warning_header->Severity);
if (warning_header->Size != sizeof(EWL_ENTRY_TYPE3)) {
printk(BIOS_ERR, "EWL type3 size mismatch!\n");
return;
}
EWL_ENTRY_TYPE3 *type3;
type3 = (EWL_ENTRY_TYPE3 *)warning_header;
process_ewl_type3(warning_header, type3->MemoryLocation);
type3_flag = 1;
} else {
printk(BIOS_DEBUG, "EWL type: %d size:%d severity level:%d\n",
warning_header->Type,
warning_header->Size,
warning_header->Severity);
hexdump(&(hob->status.Buffer[offset]), warning_header->Size);
}
offset += warning_header->Size;
}
if (type3_flag)
die("Memory Training Error!\n");
}

10
src/drivers/ocp/ewl/ocp_ewl.h Normal file
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/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef __OCP_EWL_H
#define __OCP_EWL_H
#include <soc/soc_util.h>
void get_ewl(void);
#endif