mb/ocp/monolake: Add vboot RO only support

Change-Id: I28a21d64e2781af294670a94c1fc88fb81e80f9e
Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35492
Reviewed-by: Andrey Petrov <anpetrov@fb.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/ocp/monolake/Kconfig

@@ -14,6 +14,14 @@ config BOARD_SPECIFIC_OPTIONS
 	select MAINBOARD_HAS_TPM1
 	select IPMI_KCS
 
+config VBOOT
+	select VBOOT_VBNV_CMOS
+	select VBOOT_NO_BOARD_SUPPORT
+	select GBB_FLAG_DISABLE_LID_SHUTDOWN
+	select GBB_FLAG_DISABLE_PD_SOFTWARE_SYNC
+	select GBB_FLAG_DISABLE_EC_SOFTWARE_SYNC
+	select GBB_FLAG_DISABLE_FWMP
+
 config INTEGRATED_UART
 	def_bool n
 

src/mainboard/ocp/monolake/cmos.layout

@@ -81,6 +81,7 @@ entries
 408          1       e       1        nmi
 409          2       e       7        power_on_after_fail
 #411          5       r       0        unused
+416          128      r      0        vbnv
 
 # MRC Scrambler Seed values
 896         32        r       0        mrc_scrambler_seed

src/mainboard/ocp/monolake/vboot-ro.fmd

@@ -0,0 +1,22 @@
+FLASH 16M {
+	SI_ALL@0x0 0x800000 {
+		SI_DESC@0x0 0x1000
+		SI_ME@0x1000 0x7ff000
+	}
+	SI_BIOS@0x800000 0x800000 {
+		MISC_RW@0x0 0x20000 {
+			RW_MRC_CACHE@0x0 0x10000
+			RW_VPD(PRESERVE)@0x010000 0x4000
+		}
+		WP_RO@0x020000 0x7e0000 {
+			RO_VPD(PRESERVE)@0x0 0x4000
+			RO_SECTION@0x4000 0x7dc000 {
+				FMAP@0x0 0x800
+				RO_FRID@0x800 0x40
+				RO_FRID_PAD@0x840 0x7c0
+				GBB@0x1000 0x4000
+				COREBOOT(CBFS)@0x5000 0x7d7000
+			}
+		}
+	}
+}