From 2a12e2e8da2477d97b8774babd1a74dda65d11a0 Mon Sep 17 00:00:00 2001
From: Furquan Shaikh <furquan@google.com>
Date: Mon, 25 Jul 2016 11:48:03 -0700
Subject: vboot: Separate vboot from chromeos

VBOOT_VERIFY_FIRMWARE should be independent of CHROMEOS. This allows use
of verified boot library without having to stick to CHROMEOS.

BUG=chrome-os-partner:55639

Change-Id: Ia2c328712caedd230ab295b8a613e3c1ed1532d9
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/15867
Tested-by: build bot (Jenkins)
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
---
 src/vboot/vboot_common.c | 110 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 src/vboot/vboot_common.c

(limited to 'src/vboot/vboot_common.c')

diff --git a/src/vboot/vboot_common.c b/src/vboot/vboot_common.c
new file mode 100644
index 0000000000..319e0dedfc
--- /dev/null
+++ b/src/vboot/vboot_common.c
@@ -0,0 +1,110 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 The ChromiumOS Authors.  All rights reserved.
+ *
+ * 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 <boot/coreboot_tables.h>
+#include <boot_device.h>
+#include <cbmem.h>
+#include <console/cbmem_console.h>
+#include <console/console.h>
+#include <fmap.h>
+#include <reset.h>
+#include <rules.h>
+#include <stddef.h>
+#include <string.h>
+#include <vboot/vboot_common.h>
+
+int vboot_named_region_device(const char *name, struct region_device *rdev)
+{
+	return fmap_locate_area_as_rdev(name, rdev);
+}
+
+/* ========================== VBOOT HANDOFF APIs =========================== */
+int vboot_get_handoff_info(void **addr, uint32_t *size)
+{
+	/*
+	 * vboot_handoff is present only after cbmem comes online. If we are in
+	 * pre-ram stage, then bail out early.
+	 */
+	if (ENV_BOOTBLOCK ||
+	    (ENV_VERSTAGE && IS_ENABLED(CONFIG_VBOOT_STARTS_IN_BOOTBLOCK)))
+		return -1;
+
+	struct vboot_handoff *vboot_handoff;
+	vboot_handoff = cbmem_find(CBMEM_ID_VBOOT_HANDOFF);
+
+	if (vboot_handoff == NULL)
+		return -1;
+
+	*addr = vboot_handoff;
+
+	if (size)
+		*size = sizeof(*vboot_handoff);
+	return 0;
+}
+
+static int vboot_get_handoff_flag(uint32_t flag)
+{
+	struct vboot_handoff *vbho;
+
+	/*
+	 * If vboot_handoff cannot be found, return default value of flag as 0.
+	 */
+	if (vboot_get_handoff_info((void **)&vbho, NULL))
+		return 0;
+
+	return !!(vbho->init_params.out_flags & flag);
+}
+
+int vboot_handoff_skip_display_init(void)
+{
+	return !vboot_get_handoff_flag(VB_INIT_OUT_ENABLE_DISPLAY);
+}
+
+int vboot_handoff_check_developer_flag(void)
+{
+	return vboot_get_handoff_flag(VB_INIT_OUT_ENABLE_DEVELOPER);
+}
+
+int vboot_handoff_check_recovery_flag(void)
+{
+	return vboot_get_handoff_flag(VB_INIT_OUT_ENABLE_RECOVERY);
+}
+
+int vboot_handoff_get_recovery_reason(void)
+{
+	struct vboot_handoff *vbho;
+	VbSharedDataHeader *sd;
+
+	if (vboot_get_handoff_info((void **)&vbho, NULL))
+		return 0;
+
+	sd = (VbSharedDataHeader *)vbho->shared_data;
+
+	return sd->recovery_reason;
+}
+
+/* ============================ VBOOT REBOOT ============================== */
+void __attribute__((weak)) vboot_platform_prepare_reboot(void)
+{
+}
+
+void vboot_reboot(void)
+{
+	if (IS_ENABLED(CONFIG_CONSOLE_CBMEM_DUMP_TO_UART))
+		cbmem_dump_console();
+	vboot_platform_prepare_reboot();
+	hard_reset();
+	die("failed to reboot");
+}
-- 
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