drivers/xgi/z9s: Port Linux framebuffer initialization to coreboot

Add native XGI Z9s framebuffer support to coreboot
XGI initialization code largely taken from Linux 3.18.5

TEST: Booted KFSN4-DRE with XGI Volari Z9s into SeaBIOS
with SeaVGABIOS enabled.  Text appeared correctly on screen
and interaction with graphical comboot menu was successful.
However, Linux cleared the framebuffer on boot, rendering the
screen useless until Linux loaded its native xgifb driver.

Change-Id: I606a3892849fc578b0c4d74536aec0a0adef3be3
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/8331
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

1 files changed, 64 insertions, 0 deletions

diff --git a/src/drivers/xgi/common/vgatypes.h b/src/drivers/xgi/common/vgatypes.h
new file mode 100644
index 0000000000..7d6772d17a
--- /dev/null
+++ b/src/drivers/xgi/common/vgatypes.h
@@ -0,0 +1,64 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * File taken verbatim from the Linux xgifb driver (v3.18.5)
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef _VGATYPES_
+#define _VGATYPES_
+
+enum XGI_VB_CHIP_TYPE {
+	VB_CHIP_Legacy = 0,
+	VB_CHIP_301,
+	VB_CHIP_301B,
+	VB_CHIP_301LV,
+	VB_CHIP_302,
+	VB_CHIP_302B,
+	VB_CHIP_302LV,
+	VB_CHIP_301C,
+	VB_CHIP_302ELV,
+	VB_CHIP_UNKNOWN, /* other video bridge or no video bridge */
+	MAX_VB_CHIP
+};
+
+struct xgi_hw_device_info {
+	unsigned long ulExternalChip; /* NO VB or other video bridge*/
+				      /* if ujVBChipID = VB_CHIP_UNKNOWN, */
+
+	void __iomem *pjVideoMemoryAddress;/* base virtual memory address */
+					    /* of Linear VGA memory */
+
+	unsigned long ulVideoMemorySize; /* size, in bytes, of the
+					    memory on the board */
+
+	unsigned char jChipType; /* Used to Identify Graphics Chip */
+				 /* defined in the data structure type  */
+				 /* "XGI_CHIP_TYPE" */
+
+	unsigned char jChipRevision; /* Used to Identify Graphics
+					Chip Revision */
+
+	unsigned char ujVBChipID; /* the ID of video bridge */
+				  /* defined in the data structure type */
+				  /* "XGI_VB_CHIP_TYPE" */
+
+	unsigned long ulCRT2LCDType; /* defined in the data structure type */
+};
+
+/* Additional IOCTL for communication xgifb <> X driver        */
+/* If changing this, xgifb.h must also be changed (for xgifb) */
+#endif
+