mb/intel/archercity_crb: Add EWL Hob processing for MRC error

Override the weak function mainboard_ewl_check() and select OCP_EWL.

Select IPMI_KCS_ROMSTAGE and IPMI_OCP for OCP IPMI commands which are
needed for OCP EWL driver, but they are Meta-specific BMC commands
and don't really work for AC, this change is just for a demonstration
with AC.

Note that FSP UPD promoteWarnings needs to be disabled so that
FSP won't block and can return to coreboot for EWL processing
when memory EWL type 3 error occurs.

Tested=On Intel AC, connected with a faulty DIMM can see
EWL type 3 error being generated and halted with coreboot log:
[DEBUG]  Number of EWL entries 3
[ERROR]  EWL type: 3 size:32 severity level:1
[ERROR]  Major Warning Code = 0x29, Minor Warning Code = 0x04,
[ERROR]  Major Checkpoint: 0xb7
[ERROR]  Minor Checkpoint: 0x74
[ERROR]  Socket 0
[ERROR]  Channel 4
[ERROR]  Dimm 0
[ERROR]  Rank 0
[ERROR]  IPMI: ipmi_get_board_config command failed (ret=3 resp=0xc1)
[DEBUG]  ipmi send memory training error
[DEBUG]  EWL type: 1 size:19 severity level:1
[DEBUG]  0x6392e968: 01 00 00 00 13 00 01 00 00 00 b7 74 0a 03 00 04
[DEBUG]  0x6392e978: 00 00 00
[DEBUG]  EWL type: 1 size:19 severity level:1
[DEBUG]  0x6392e97b: 01 00 00 00 13 00 01 00 00 00 b7 74 0a 03 00 04
[DEBUG]  0x6392e98b: 00 00 01
[EMERG]  Memory Training Error!

Change-Id: I4602ae356aa6e55ed0611b8ac9a206db127c297c
Signed-off-by: Johnny Lin <johnny_lin@wiwynn.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75151
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>

Author: johnnylinwiwynn

src/mainboard/intel/archercity_crb/Kconfig

@@ -5,6 +5,8 @@ config BOARD_SPECIFIC_OPTIONS
 	select BOARD_ROMSIZE_KB_65536
 	select CONSOLE_OVERRIDE_LOGLEVEL
 	select IPMI_KCS
+	select IPMI_KCS_ROMSTAGE
+	select IPMI_OCP
 	select MEMORY_MAPPED_TPM
 	select MAINBOARD_HAS_TPM2
 	select MAINBOARD_USES_FSP2_0
@@ -13,6 +15,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select HAVE_ACPI_TABLES
 	select MAINBOARD_USES_IFD_GBE_REGION
 	select VPD
+	select OCP_EWL
 	select OCP_VPD
 
 config MAINBOARD_DIR

src/mainboard/intel/archercity_crb/romstage.c

@@ -2,12 +2,18 @@
 
 #include <console/console.h>
 #include <drivers/vpd/vpd.h>
+#include <drivers/ocp/ewl/ocp_ewl.h>
 #include <drivers/ocp/include/vpd.h>
 #include <soc/romstage.h>
 #include <defs_cxl.h>
 #include <defs_iio.h>
 #include <sprsp_ac_iio.h>
 
+void mainboard_ewl_check(void)
+{
+	get_ewl();
+}
+
 static void mainboard_config_iio(FSPM_UPD *mupd)
 {
 	int port;