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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2016 Intel 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 <console/console.h>
#include <string.h>
#include <cbmem.h>
#include <drivers/intel/gma/opregion.h>
#include "opregion.h"
#include "vbt.h"
int init_igd_opregion(igd_opregion_t *opregion)
{
struct region_device vbt_rdev;
optionrom_vbt_t *vbt;
optionrom_vbt_t *ext_vbt;
if (locate_vbt(&vbt_rdev) == CB_ERR) {
printk(BIOS_ERR, "VBT not found\n");
return 0;
};
vbt = rdev_mmap_full(&vbt_rdev);
if (!vbt) {
printk(BIOS_ERR, "VBT couldn't be read\n");
return 0;
}
memset(opregion, 0, sizeof(igd_opregion_t));
memcpy(&opregion->header.signature, IGD_OPREGION_SIGNATURE,
sizeof(opregion->header.signature));
memcpy(opregion->header.vbios_version, vbt->coreblock_biosbuild,
ARRAY_SIZE(vbt->coreblock_biosbuild));
/* Extended VBT support */
if (vbt->hdr_vbt_size > sizeof(opregion->vbt.gvd1)) {
ext_vbt = cbmem_add(CBMEM_ID_EXT_VBT, vbt->hdr_vbt_size);
if (ext_vbt == NULL) {
printk(BIOS_ERR, "Unable to add Ext VBT to cbmem!\n");
return 0;
}
memcpy(ext_vbt, vbt, vbt->hdr_vbt_size);
opregion->mailbox3.rvda = (uintptr_t)ext_vbt;
opregion->mailbox3.rvds = vbt->hdr_vbt_size;
} else {
/* Raw VBT size which can fit in gvd1 */
memcpy(opregion->vbt.gvd1, vbt, vbt->hdr_vbt_size);
}
/* 8KiB */
opregion->header.size = sizeof(igd_opregion_t) / KiB;
opregion->header.version = IGD_OPREGION_VERSION;
/* FIXME We just assume we're mobile for now */
opregion->header.mailboxes = MAILBOXES_MOBILE;
rdev_munmap(&vbt_rdev, vbt);
return 1;
}
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