soc/amd/cezanne: add empty SMM-handler

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I95908fac3b1e17a16542e5d80001fac3d22d839a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50455
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/amd/cezanne/Kconfig

@@ -17,6 +17,7 @@ config SOC_SPECIFIC_OPTIONS
 	select FSP_COMPRESS_FSP_M_LZMA
 	select FSP_COMPRESS_FSP_S_LZMA
 	select HAVE_CF9_RESET
+	select HAVE_SMI_HANDLER
 	select IDT_IN_EVERY_STAGE
 	select IOAPIC
 	select PLATFORM_USES_FSP2_0
@@ -154,6 +155,19 @@ config CONSOLE_UART_BASE_ADDRESS
 	default 0xfedc9000 if UART_FOR_CONSOLE = 0
 	default 0xfedca000 if UART_FOR_CONSOLE = 1
 
+config SMM_TSEG_SIZE
+	hex
+	default 0x800000 if SMM_TSEG && HAVE_SMI_HANDLER
+	default 0x0
+
+config SMM_RESERVED_SIZE
+	hex
+	default 0x180000
+
+config SMM_MODULE_STACK_SIZE
+	hex
+	default 0x800
+
 menu "PSP Configuration Options"
 
 config AMD_FWM_POSITION_INDEX

src/soc/amd/cezanne/Makefile.inc

@@ -4,6 +4,7 @@ ifeq ($(CONFIG_SOC_AMD_CEZANNE),y)
 
 subdirs-y += ../../../cpu/x86/lapic
 subdirs-y += ../../../cpu/x86/mtrr
+subdirs-y += ../../../cpu/x86/smm
 
 # Beware that all-y also adds the compilation unit to verstage on PSP
 all-y		+= config.c
@@ -34,6 +35,8 @@ ramstage-y	+= reset.c
 ramstage-y	+= root_complex.c
 ramstage-y	+= uart.c
 
+smm-y		+= smihandler.c
+
 CPPFLAGS_common += -I$(src)/soc/amd/cezanne/include
 CPPFLAGS_common += -I$(src)/vendorcode/amd/fsp/cezanne
 

src/soc/amd/cezanne/smihandler.c

@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <cpu/x86/smm.h>
+
+void southbridge_smi_handler(void)
+{
+}