diff options
author | Timothy Pearson <tpearson@raptorengineeringinc.com> | 2015-02-02 18:25:34 -0600 |
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committer | Alexandru Gagniuc <mr.nuke.me@gmail.com> | 2015-02-05 17:37:05 +0100 |
commit | c522fc8f3815ab33fe11ca58263d84bc8e98417d (patch) | |
tree | bf5205470051832a677d469960c26f28f1a23803 /src/drivers/xgi/common/vb_util.c | |
parent | 5c015f045ddd00d34e56ee407ed2596e97a1433a (diff) |
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>
Diffstat (limited to 'src/drivers/xgi/common/vb_util.c')
-rw-r--r-- | src/drivers/xgi/common/vb_util.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/drivers/xgi/common/vb_util.c b/src/drivers/xgi/common/vb_util.c new file mode 100644 index 0000000000..a705696638 --- /dev/null +++ b/src/drivers/xgi/common/vb_util.c @@ -0,0 +1,67 @@ +/* + * This file is part of the coreboot project. + * + * File taken from the Linux xgifb driver (v3.18.5) + * Coreboot-specific includes added at top + * + * 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 + */ + +#include "xgi_coreboot.h" + +#include "vgatypes.h" +#include "vb_util.h" + +void xgifb_reg_set(unsigned long port, u8 index, u8 data) +{ + outb(index, port); + outb(data, port + 1); +} + +u8 xgifb_reg_get(unsigned long port, u8 index) +{ + u8 data; + + outb(index, port); + data = inb(port + 1); + return data; +} + +void xgifb_reg_and_or(unsigned long port, u8 index, + unsigned data_and, unsigned data_or) +{ + u8 temp; + + temp = xgifb_reg_get(port, index); /* XGINew_Part1Port index 02 */ + temp = (temp & data_and) | data_or; + xgifb_reg_set(port, index, temp); +} + +void xgifb_reg_and(unsigned long port, u8 index, unsigned data_and) +{ + u8 temp; + + temp = xgifb_reg_get(port, index); /* XGINew_Part1Port index 02 */ + temp &= data_and; + xgifb_reg_set(port, index, temp); +} + +void xgifb_reg_or(unsigned long port, u8 index, unsigned data_or) +{ + u8 temp; + + temp = xgifb_reg_get(port, index); /* XGINew_Part1Port index 02 */ + temp |= data_or; + xgifb_reg_set(port, index, temp); +} |