mb/purism/librem_skl: Add CFR option menu support

Add CFR option menu support when using edk2 payload and SMMSTORE.
Drop the Intel ME-related options since these boards ship with the
ME disabled via HAP.

Change-Id: I9b1a272cababc6852b4c2f9c03cc417c1b1d12be
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/89535
Reviewed-by: Martin L Roth <gaumless@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/purism/librem_skl/Kconfig

@@ -4,6 +4,7 @@ config BOARD_PURISM_BASEBOARD_LIBREM_SKL
 	def_bool n
 	select BOARD_ROMSIZE_KB_16384
 	select DRIVERS_GENERIC_CBFS_SERIAL
+	select DRIVERS_OPTION_CFR_ENABLED if PAYLOAD_EDK2 && SMMSTORE
 	select GFX_GMA_IGNORE_PRESENCE_STRAPS
 	select HAVE_ACPI_RESUME
 	select HAVE_ACPI_TABLES

src/mainboard/purism/librem_skl/Makefile.mk

@@ -4,3 +4,4 @@ ramstage-y += ramstage.c
 ramstage-y += hda_verb.c
 
 ramstage-$(CONFIG_MAINBOARD_USE_LIBGFXINIT) += gma-mainboard.ads
+ramstage-$(CONFIG_DRIVERS_OPTION_CFR_ENABLED) += cfr.c

src/mainboard/purism/librem_skl/cfr.c

@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <boot/coreboot_tables.h>
+#include <drivers/option/cfr_frontend.h>
+#include <intelblocks/cfr.h>
+#include <soc/cfr.h>
+
+static struct sm_obj_form system = {
+	.ui_name = "System",
+	.obj_list = (const struct sm_object *[]) {
+		&hyper_threading,
+		&igd_dvmt,
+		&igd_aperture,
+		&legacy_8254_timer,
+		&pciexp_aspm,
+		&pciexp_clk_pm,
+		&pciexp_l1ss,
+		&pciexp_speed,
+		&s0ix_enable,
+		&vtd,
+		NULL
+	},
+};
+
+static struct sm_obj_form *sm_root[] = {
+	&system,
+	NULL
+};
+
+void mb_cfr_setup_menu(struct lb_cfr *cfr_root)
+{
+	cfr_write_setup_menu(cfr_root, sm_root);
+}