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soc/intel/common: Add utility to load VBT file 

Change-Id: I8d3d47ca2fc1fc4c10e61c04b941b6378b9c0f80
Signed-off-by: Andrey Petrov <andrey.petrov@intel.com>
Reviewed-on: https://review.coreboot.org/14815
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Andrey Petrov 2016-05-13 15:27:42 -07:00 committed by Aaron Durbin
parent 493ec92eb3
commit 060b215fa7
4 changed files with 84 additions and 0 deletions
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13
src/soc/intel/common/Kconfig
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@ -59,4 +59,17 @@ config MMA_BLOBS_PATH
depends on MMA
default "3rdparty/blobs/mainboard/$(MAINBOARDDIR)/mma"
config ADD_VBT_DATA_FILE
bool "Add a Video Bios Table (VBT) binary to CBFS"
help
Add a VBT file data file to CBFS. The VBT describes the integrated
GPU and connections, and is needed by FSP in order to initialize the
display.
config VBT_FILE
string "VBT binary path and filename"
depends on ADD_VBT_DATA_FILE
help
The path and filename of the VBT binary.
endif # SOC_INTEL_COMMON

5
src/soc/intel/common/Makefile.inc
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@ -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)
@ -71,4 +72,8 @@ $(foreach mma_test, $(MMA_TEST_CONFIG_NAMES),\
endif
cbfs-files-$(CONFIG_ADD_VBT_DATA_FILE) += vbt.bin
vbt.bin-file := $(call strip_quotes,$(CONFIG_VBT_FILE))
vbt.bin-type := raw
endif

42
src/soc/intel/common/vbt.c Normal file
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@ -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;
}

24
src/soc/intel/common/vbt.h Normal file
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@ -0,0 +1,24 @@
/*
* 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_
#include <commonlib/region.h>
#include <types.h>
/* locate .vbt file */
enum cb_err locate_vbt(struct region_device *rdev);
#endif