summaryrefslogtreecommitdiff
path: root/src/soc/intel/common/opregion.c
diff options
context:
space:
mode:
authorAndrey Petrov <andrey.petrov@intel.com>2016-05-12 19:10:11 -0700
committerAaron Durbin <adurbin@chromium.org>2016-05-18 07:03:13 +0200
commitdc4ae11366eedea20b8b2c530cdd830a3e256ef2 (patch)
tree35ec0aaa46e709ec85e45b51cb1ea074db076ebb /src/soc/intel/common/opregion.c
parent060b215fa7b7f9aae04e90be9eeed14e6f1974bf (diff)
downloadcoreboot-dc4ae11366eedea20b8b2c530cdd830a3e256ef2.tar.xz
soc/intel/common: Add IGD OpRegion support
Add helper function that fills OpRegion structure based on VBT file content and some reasonable defaults. Change-Id: I9aa8862878cc016a9a684c844ceab390734f3e84 Signed-off-by: Andrey Petrov <andrey.petrov@intel.com> Reviewed-on: https://review.coreboot.org/14806 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/soc/intel/common/opregion.c')
-rw-r--r--src/soc/intel/common/opregion.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/src/soc/intel/common/opregion.c b/src/soc/intel/common/opregion.c
new file mode 100644
index 0000000000..fa4d604a42
--- /dev/null
+++ b/src/soc/intel/common/opregion.c
@@ -0,0 +1,59 @@
+/*
+ * 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 "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;
+
+ 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(IGD_OPREGION_SIGNATURE));
+ memcpy(opregion->header.vbios_version, vbt->coreblock_biosbuild,
+ ARRAY_SIZE(vbt->coreblock_biosbuild));
+ memcpy(opregion->vbt.gvd1, vbt, MIN(vbt->hdr_vbt_size,
+ sizeof(opregion->vbt.gvd1)));
+
+ /* 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;
+}