bootmode: Get rid of CONFIG_BOOTMODE_STRAPS

With VBOOT_VERIFY_FIRMWARE separated from CHROMEOS, move recovery and
developer mode check functions to vboot. Thus, get rid of the
BOOTMODE_STRAPS option which controlled these functions under src/lib.

BUG=chrome-os-partner:55639

Change-Id: Ia2571026ce8976856add01095cc6be415d2be22e
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/15868
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/vboot/Makefile.inc

@@ -13,6 +13,14 @@
 ## GNU General Public License for more details.
 ##
 
+bootblock-y += bootmode.c
+romstage-y += bootmode.c
+ramstage-y += bootmode.c
+verstage-y += bootmode.c
+postcar-y += bootmode.c
+
+ifeq ($(CONFIG_VBOOT),y)
+
 libverstage-generic-ccopts += -D__PRE_RAM__ -D__VERSTAGE__
 verstage-generic-ccopts += -D__PRE_RAM__ -D__VERSTAGE__
 
@@ -53,12 +61,6 @@ romstage-y += vboot_common.c
 ramstage-y += vboot_common.c
 postcar-y += vboot_common.c
 
-bootblock-y += recovery.c
-romstage-y += recovery.c
-ramstage-y += recovery.c
-verstage-y += recovery.c
-postcar-y += recovery.c
-
 bootblock-y += common.c
 libverstage-y += vboot_logic.c
 verstage-y += common.c
@@ -141,3 +143,5 @@ regions-for-file = $(subst $(spc),$(comma),$(sort \
 		font.bin \
 		vbgfx.bin \
 		,$(1)),COREBOOT,COREBOOT FW_MAIN_A FW_MAIN_B)))
+
+endif # CONFIG_VBOOT

src/vboot/bootmode.c

@@ -89,6 +89,9 @@ static int cbmem_possibly_online(void)
  */
 static int vboot_possibly_executed(void)
 {
+	if (!IS_ENABLED(CONFIG_VBOOT))
+		return 0;
+
 	if (IS_ENABLED(CONFIG_VBOOT_STARTS_IN_BOOTBLOCK)) {
 		if (ENV_BOOTBLOCK && IS_ENABLED(CONFIG_SEPARATE_VERSTAGE))
 			return 0;
@@ -150,3 +153,25 @@ int vboot_check_recovery_request(void)
 
 	return 0;
 }
+
+int vboot_recovery_mode_enabled(void)
+{
+	if (!IS_ENABLED(CONFIG_VBOOT))
+		return 0;
+
+	return !!vboot_check_recovery_request();
+}
+
+int vboot_developer_mode_enabled(void)
+{
+	if (!IS_ENABLED(CONFIG_VBOOT))
+		return 0;
+
+	if (get_developer_mode_switch())
+		return 1;
+
+	if (cbmem_possibly_online() && vboot_handoff_check_developer_flag())
+		return 1;
+
+	return 0;
+}

src/vboot/vboot_common.h

@@ -101,4 +101,8 @@ void verstage_main(void);
 void verstage(void);
 void verstage_mainboard_init(void);
 
+/* Check boot modes */
+int vboot_developer_mode_enabled(void);
+int vboot_recovery_mode_enabled(void);
+
 #endif /* __VBOOT_VBOOT_COMMON_H__ */