mb/clevo/l140cu: Move FSP-M config hook to mainboard level

Hook up FSP-M configuration on mainboard level instead of variant level
being able to do common configuration there.

Also, hook up variant romstage.c on mainboard level for variant
specific configurations.

Change-Id: Ic161f83cb629b1e70ca670e10975a25bc0949656
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49077
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>

src/mainboard/clevo/cml-u/Makefile.inc

@@ -3,6 +3,9 @@ CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/include
 bootblock-y += bootblock.c
 bootblock-y += variants/$(VARIANT_DIR)/gpio_early.c
 
+romstage-y += romstage.c
+romstage-y += variants/$(VARIANT_DIR)/romstage.c
+
 ramstage-y += ramstage.c
 ramstage-y += variants/$(VARIANT_DIR)/gpio.c
 ramstage-y += variants/$(VARIANT_DIR)/hda_verb.c

src/mainboard/clevo/cml-u/include/variant/romstage.h

@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef VARIANT_ROMSTAGE_H
+#define VARIANT_ROMSTAGE_H
+
+void variant_configure_fspm(FSPM_UPD *memupd);
+
+#endif

src/mainboard/clevo/cml-u/romstage.c

@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <soc/romstage.h>
+#include <variant/romstage.h>
+
+void mainboard_memory_init_params(FSPM_UPD *memupd)
+{
+	variant_configure_fspm(memupd);
+}

src/mainboard/clevo/cml-u/variants/l140cu/Makefile.inc

@@ -1,2 +1 @@
-romstage-y += romstage.c
 SPD_SOURCES  = samsung-K4AAG165WA-BCTD

src/mainboard/clevo/cml-u/variants/l140cu/romstage.c

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <soc/cnl_memcfg_init.h>
-#include <soc/romstage.h>
+#include <variant/romstage.h>
 
 static const struct cnl_mb_cfg memcfg = {
 	.spd[0] = {
@@ -29,7 +29,7 @@ static const struct cnl_mb_cfg memcfg = {
 	.vref_ca_config = 2,
 };
 
-void mainboard_memory_init_params(FSPM_UPD *memupd)
+void variant_configure_fspm(FSPM_UPD *memupd)
 {
 	cannonlake_memcfg_init(&memupd->FspmConfig, &memcfg);
 }