1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
/*
* 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"
enum cb_err 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 CB_ERR;
};
vbt = rdev_mmap_full(&vbt_rdev);
if (!vbt) {
printk(BIOS_ERR, "VBT couldn't be read\n");
return CB_ERR;
}
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 CB_ERR;
}
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 CB_SUCCESS;
}
|
