mn50: fix usb_update

Add support for update related vendor commands in mn50 by relocating
relevant code from board/cr50 to chip/g.

BUG=b:36910757
BRANCH=None
TEST=./extra/usb_updater/usb_updater -d 18d1:502a build/mn50/ec.bin

Change-Id: Iec0fe5585b5b6eb099f9254dfb0e5b02d5106abc
Reviewed-on: https://chromium-review.googlesource.com/537999
Commit-Ready: Nick Sanders <nsanders@chromium.org>
Tested-by: Nick Sanders <nsanders@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>

1 files changed, 39 insertions, 0 deletions

diff --git a/chip/g/post_reset.c b/chip/g/post_reset.c
new file mode 100644
index 0000000000..24a98a9470
--- /dev/null
+++ b/chip/g/post_reset.c
@@ -0,0 +1,39 @@
+/* Copyright 2016 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+
+#include "config.h"
+#include "board.h"
+#include "console.h"
+#include "extension.h"
+#include "system.h"
+
+#define CPRINTS(format, args...) cprints(CC_SYSTEM, format, ## args)
+
+void post_reset_command_handler(void *body,
+				size_t cmd_size,
+				size_t *response_size)
+{
+	*response_size = 1;
+	((uint8_t *)body)[0] = 0;
+	post_reboot_request();
+}
+
+DECLARE_EXTENSION_COMMAND(EXTENSION_POST_RESET, post_reset_command_handler);
+
+static enum vendor_cmd_rc immediate_reset(enum vendor_cmd_cc code,
+					  void *buf,
+					  size_t input_size,
+					  size_t *response_size)
+{
+	CPRINTS("%s: rebooting on host's request", __func__);
+	cflush(); /* Let the console drain. */
+	/* This will never return. */
+	system_reset(SYSTEM_RESET_MANUALLY_TRIGGERED | SYSTEM_RESET_HARD);
+
+	/* Never reached. */
+	return VENDOR_RC_SUCCESS;
+}
+DECLARE_VENDOR_COMMAND(VENDOR_CC_IMMEDIATE_RESET, immediate_reset);