chromeos: Add Kconfig options for GBB flags

Use the flags to preset the GBB flags field. The Kconfig defaults are
chosen for a "developer" configuration.

Change-Id: Ifcc05aab10b92a2fc201b663df5ea47f92439a3f
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: https://review.coreboot.org/13559
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/vendorcode/google/chromeos/Kconfig

@@ -179,6 +179,61 @@ config GBB_BMPFV_FILE
 	depends on GBB_HAVE_BMPFV
 	default ""
 
+config GBB_FLAG_DEV_SCREEN_SHORT_DELAY
+	bool "Reduce dev screen delay"
+	default n
+
+config GBB_FLAG_LOAD_OPTION_ROMS
+	bool "Load option ROMs"
+	default n
+
+config GBB_FLAG_ENABLE_ALTERNATE_OS
+	bool "Allow booting a non-Chrome OS kernel if dev switch is on"
+	default n
+
+config GBB_FLAG_FORCE_DEV_SWITCH_ON
+	bool "Force dev switch on"
+	default n
+
+config GBB_FLAG_FORCE_DEV_BOOT_USB
+	bool "Allow booting from USB in dev mode even if dev_boot_usb=0"
+	default y
+
+config GBB_FLAG_DISABLE_FW_ROLLBACK_CHECK
+	bool "Disable firmware rollback protection"
+	default y
+
+config GBB_FLAG_ENTER_TRIGGERS_TONORM
+	bool "Return to normal boot with Enter"
+	default n
+
+config GBB_FLAG_FORCE_DEV_BOOT_LEGACY
+	bool "Allow booting to legacy in dev mode even if dev_boot_legacy=0"
+	default n
+
+config GBB_FLAG_FAFT_KEY_OVERIDE
+	bool "Allow booting using alternative keys for FAFT servo testing"
+	default n
+
+config GBB_FLAG_DISABLE_EC_SOFTWARE_SYNC
+	bool "Disable EC software sync"
+	default n
+
+config GBB_FLAG_DEFAULT_DEV_BOOT_LEGACY
+	bool "Default to booting to legacy in dev mode"
+	default n
+
+config GBB_FLAG_DISABLE_PD_SOFTWARE_SYNC
+	bool "Disable PD software sync"
+	default n
+
+config GBB_FLAG_DISABLE_LID_SHUTDOWN
+	bool "Disable shutdown on closed lid"
+	default n
+
+config GBB_FLAG_FORCE_DEV_BOOT_FASTBOOT_FULL_CAP
+	bool "Allow fastboot even if dev_boot_fastboot_full_cap=0"
+	default n
 endmenu # GBB
 
 menu "Vboot Keys"

src/vendorcode/google/chromeos/Makefile.inc

@@ -55,6 +55,26 @@ subdirs-$(CONFIG_VBOOT_VERIFY_FIRMWARE) += vboot2
 CONFIG_GBB_HWID := $(call strip_quotes,$(CONFIG_GBB_HWID))
 CONFIG_GBB_BMPFV_FILE := $(call strip_quotes,$(CONFIG_GBB_BMPFV_FILE))
 
+# bool-to-mask(var, value)
+# return "value" if var is "y", 0 otherwise
+bool-to-mask = $(if $(filter y,$(1)),$(2),0)
+
+GBB_FLAGS := $(call int-add, \
+	$(call bool-to-mask,$(CONFIG_GBB_FLAG_DEV_SCREEN_SHORT_DELAY),0x1) \
+	$(call bool-to-mask,$(CONFIG_GBB_FLAG_LOAD_OPTION_ROMS),0x2) \
+	$(call bool-to-mask,$(CONFIG_GBB_FLAG_ENABLE_ALTERNATE_OS),0x4) \
+	$(call bool-to-mask,$(CONFIG_GBB_FLAG_FORCE_DEV_SWITCH_ON),0x8) \
+	$(call bool-to-mask,$(CONFIG_GBB_FLAG_FORCE_DEV_BOOT_USB),0x10) \
+	$(call bool-to-mask,$(CONFIG_GBB_FLAG_DISABLE_FW_ROLLBACK_CHECK),0x20) \
+	$(call bool-to-mask,$(CONFIG_GBB_FLAG_ENTER_TRIGGERS_TONORM),0x40) \
+	$(call bool-to-mask,$(CONFIG_GBB_FLAG_FORCE_DEV_BOOT_LEGACY),0x80) \
+	$(call bool-to-mask,$(CONFIG_GBB_FLAG_FAFT_KEY_OVERIDE),0x100) \
+	$(call bool-to-mask,$(CONFIG_GBB_FLAG_DISABLE_EC_SOFTWARE_SYNC),0x200) \
+	$(call bool-to-mask,$(CONFIG_GBB_FLAG_DEFAULT_DEV_BOOT_LEGACY),0x400) \
+	$(call bool-to-mask,$(CONFIG_GBB_FLAG_DISABLE_PD_SOFTWARE_SYNC),0x800) \
+	$(call bool-to-mask,$(CONFIG_GBB_FLAG_DISABLE_LID_SHUTDOWN),0x1000) \
+	$(call bool-to-mask,$(CONFIG_GBB_FLAG_FORCE_DEV_BOOT_FASTBOOT_FULL_CAP),0x2000))
+
 ifneq ($(CONFIG_GBB_BMPFV_FILE),)
 $(obj)/gbb.stub: $(obj)/coreboot.rom $(FUTILITY)
 	@printf "    CREATE GBB (with BMPFV)\n"
@@ -76,7 +96,7 @@ $(obj)/gbb.region: $(obj)/gbb.stub
 		--hwid="$(CONFIG_GBB_HWID)" \
 		--rootkey="$(CONFIG_VBOOT_ROOT_KEY)" \
 		--recoverykey="$(CONFIG_VBOOT_RECOVERY_KEY)" \
-		--flags=0 \
+		--flags=$(GBB_FLAGS) \
 		$@.tmp
 	mv $@.tmp $@