storm: prepare to enabling Vboot2

This change adds to makefiles sources necessary for VBOOT2 verstage
without actually enabling verstage yet.

BRANCH=storm
BUG=chrome-os-partner:34161
TEST=not much testing yet, just successful compilation.

Change-Id: I1d7944e681f8a4b113a90ac028a0faba4423be89
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/234643

src/mainboard/google/storm/Kconfig

@@ -27,6 +27,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select COMMON_CBFS_SPI_WRAPPER
 	select HAVE_HARD_RESET
 	select MAINBOARD_HAS_BOOTBLOCK_INIT
+	select RETURN_FROM_VERSTAGE
 	select SOC_QC_IPQ806X
 	select SPI_FLASH
 	select SPI_FLASH_SPANSION

src/mainboard/google/storm/Makefile.inc

@@ -20,6 +20,9 @@
 bootblock-y += cdp.c
 bootblock-y += reset.c
 
+verstage-y += cdp.c
+verstage-y += chromeos.c
+verstage-y += memlayout.ld
 verstage-y += reset.c
 
 romstage-y += romstage.c

src/mainboard/google/storm/romstage.c

@@ -28,12 +28,15 @@ void main(void)
 {
 	void *entry;
 
-	cbmem_initialize_empty();
-
+	cbmem_initialize();
 	console_init();
 
+#if CONFIG_VBOOT2_VERIFY_FIRMWARE
+	entry = vboot2_load_ramstage();
+#else
 	vboot_verify_firmware(romstage_handoff_find_or_add());
-
 	entry = cbfs_load_stage(CBFS_DEFAULT_MEDIA, "fallback/ramstage");
+#endif
+
 	stage_exit(entry);
 }

src/soc/qualcomm/ipq806x/Makefile.inc

@@ -23,6 +23,12 @@ bootblock-$(CONFIG_SPI_FLASH) += spi.c
 bootblock-y += timer.c
 bootblock-$(CONFIG_CONSOLE_SERIAL_IPQ806X) += uart.c
 
+verstage-y += clock.c
+verstage-y += gpio.c
+verstage-y += spi.c
+verstage-y += timer.c
+verstage-$(CONFIG_CONSOLE_SERIAL_IPQ806X) += uart.c
+
 romstage-y += clock.c
 romstage-y += gpio.c
 romstage-$(CONFIG_SPI_FLASH) += spi.c