mainboard/opencellular/elgon: Add mainboard support

Tested on Elgon EVT board and boots into GNU/Linux.

TODO:
* Add hard reset function for VBOOT.
* Add EC code
* Add SPI flash write protection

Change-Id: I9b809306cc48facbade5dc63846c4532b397e0b5
Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org>
Reviewed-on: https://review.coreboot.org/28024
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>

1 files changed, 32 insertions, 0 deletions

diff --git a/src/mainboard/opencellular/elgon/death.c b/src/mainboard/opencellular/elgon/death.c
new file mode 100644
index 000000000000..ac58e846a041
--- /dev/null
+++ b/src/mainboard/opencellular/elgon/death.c
@@ -0,0 +1,32 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2017-present Facebook, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <soc/gpio.h>
+#include <console/console.h>
+#include <delay.h>
+#include "mainboard.h"
+
+void die_notify(void)
+{
+	const u32 rate = 1000 / 10; // blink at 5 Hz
+
+	do {
+		gpio_output(ELGON_GPIO_ERROR_LED, 0);
+		mdelay(rate);
+		gpio_output(ELGON_GPIO_ERROR_LED, 1);
+		mdelay(rate);
+	} while (1);
+}