google/storm: use whirlwind LED ring on SP5 boards

The latest whirlwind requirements call for the need to indicate
different device states while it is still in coreboot (it could be
waiting for recovery or for factory reset trigger).

Initialize the LED ring when running on the SP5 hardware (which is the
first proper Whirlwind device).

BRANCH=storm
BUG=chrome-os-partner:36059
TEST=when the device starts the LED ring gets shut down

Change-Id: I9dd0bca4849a2a8500322c84c7351aeef00d862e
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 24e4da56d4c43d03f235d0cfd5995ef235e6a2c5
Original-Change-Id: Ica37301aa27f35897d2bf467ae319fb5e68adc1d
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/258271
Original-Reviewed-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/9859
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/mainboard/google/storm/Kconfig

@@ -25,6 +25,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select BOARD_ID_AUTO
 	select BOARD_ROMSIZE_KB_8192
 	select COMMON_CBFS_SPI_WRAPPER
+	select DRIVERS_I2C_WW_RING
 	select HAVE_HARD_RESET
 	select MAINBOARD_HAS_BOOTBLOCK_INIT
 	select MAINBOARD_HAS_CHROMEOS

src/mainboard/google/storm/Makefile.inc

@@ -22,6 +22,7 @@ bootblock-y += cdp.c
 bootblock-y += mmu.c
 bootblock-y += reset.c
 
+verstage-y += boardid.c
 verstage-y += cdp.c
 verstage-y += chromeos.c
 verstage-y += gsbi.c

src/mainboard/google/storm/chromeos.c

@@ -17,10 +17,14 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include <boardid.h>
 #include <boot/coreboot_tables.h>
 #include <console/console.h>
 #include <delay.h>
+#include <drivers/i2c/ww_ring/ww_ring.h>
 #include <gpio.h>
+#include <soc/cdp.h>
+#include <soc/gsbi.h>
 #include <string.h>
 #include <timer.h>
 #include <vendorcode/google/chromeos/chromeos.h>
@@ -86,9 +90,11 @@ int get_recovery_mode_switch(void)
 			break;
 	} while (!stopwatch_expired(&sw));
 
-	if (sampled_value)
+	if (sampled_value) {
 		printk(BIOS_INFO, "recovery mode requested\n");
-
+		if (board_id() == BOARD_ID_WHIRLWIND_SP5)
+			ww_ring_display_pattern(GSBI_ID_7, 0);
+	}
 	return sampled_value;
 }