[coreboot-gerrit] Patch set updated for coreboot: soc/intel/common: Add utility to load VBT file

[Andrey Petrov (andrey.petrov@intel.com)]

Andrey Petrov (andrey.petrov at intel.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/14815

-gerrit

commit 15d63b82a7b2a51ff1901412817f8bfab326ee29
Author: Andrey Petrov <andrey.petrov at intel.com>
Date:   Fri May 13 15:27:42 2016 -0700

    soc/intel/common: Add utility to load VBT file
    
    Change-Id: I8d3d47ca2fc1fc4c10e61c04b941b6378b9c0f80
    Signed-off-by: Andrey Petrov <andrey.petrov at intel.com>
---
 src/soc/intel/common/Makefile.inc |  1 +
 src/soc/intel/common/vbt.c        | 42 +++++++++++++++++++++++++++++++++++++++
 src/soc/intel/common/vbt.h        | 20 +++++++++++++++++++
 3 files changed, 63 insertions(+)

diff --git a/src/soc/intel/common/Makefile.inc b/src/soc/intel/common/Makefile.inc
index a7218b7..f69871a 100644
--- a/src/soc/intel/common/Makefile.inc
+++ b/src/soc/intel/common/Makefile.inc
@@ -14,6 +14,7 @@ ramstage-$(CONFIG_SOC_INTEL_COMMON_RESET) += reset.c
 ramstage-y += util.c
 ramstage-$(CONFIG_MMA) += mma.c
 ramstage-$(CONFIG_SOC_INTEL_COMMON_ACPI_WAKE_SOURCE) += acpi_wake_source.c
+ramstage-y += vbt.c
 
 # Create and add the MRC cache to the cbfs image
 ifneq ($(CONFIG_CHROMEOS),y)
diff --git a/src/soc/intel/common/vbt.c b/src/soc/intel/common/vbt.c
new file mode 100644
index 0000000..80b17a2
--- /dev/null
+++ b/src/soc/intel/common/vbt.c
@@ -0,0 +1,42 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2016 Intel Corporation.
+ *
+ * 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 <cbfs.h>
+#include <console/console.h>
+
+#include "vbt.h"
+
+#define VBT_SIGNATURE 0x54425624
+
+enum cb_err locate_vbt(struct region_device *rdev)
+{
+	uint32_t vbtsig = 0;
+	struct cbfsf file_desc;
+
+	if (cbfs_boot_locate(&file_desc, "vbt.bin", NULL) < 0) {
+		printk(BIOS_ERR, "Could not locate a VBT file in in CBFS\n");
+		return CB_ERR;
+	}
+
+	cbfs_file_data(rdev, &file_desc);
+	rdev_readat(rdev, &vbtsig, 0, sizeof(uint32_t));
+
+	if (vbtsig != VBT_SIGNATURE) {
+		printk(BIOS_ERR, "Missing/invalid signature in VBT data file!\n");
+		return CB_ERR;
+	}
+
+	return CB_SUCCESS;
+}
diff --git a/src/soc/intel/common/vbt.h b/src/soc/intel/common/vbt.h
new file mode 100644
index 0000000..c176efb
--- /dev/null
+++ b/src/soc/intel/common/vbt.h
@@ -0,0 +1,20 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2016 Intel Corporation.
+ *
+ * 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.
+ */
+
+#ifndef _INTEL_COMMON_VBT_H_
+#define _INTEL_COMMON_VBT_H_
+/* locate .vbt file */
+enum cb_err locate_vbt(struct region_device *rdev);
+#endif