| /* |
| * 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 "gma.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; |
| } |