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7ad37df02c
android_kernel_xiaomi_sm8350/arch/i386/boot
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H. Peter Anvin 7ad37df02c [x86 setup] VGA: Clear the Protect bit before setting the vertical height 
If the user has asked for the vertical height registers to be recomputed
by setting bit 15 in the video mode number, we do so without clearing the
Protect bit in the Vertical Retrace Register before setting the Overflow
register.  As a result, if the VGA BIOS had set the Protect bit, the
write to the Overflow register will be dropped, and bits [9:8] of the
vertical height will be left unchanged.

This is a bug imported from the assembly version of this code.  It was
pointed out by Etienne Lorrain.

Cc: Etienne Lorrain <etienne_lorrain@yahoo.fr>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2007-07-18 11:36:17 -07:00
..
compressed xen: suppress abs symbol warnings for unused reloc pointers 2007-07-18 08:47:45 -07:00
tools [x86 setup] build/tools.c: fix comment 2007-07-18 11:36:17 -07:00
.gitignore
a20.c A20 handling code 2007-07-12 10:55:55 -07:00
apm.c APM probing code 2007-07-12 10:55:55 -07:00
bitops.h Simple bitops for the new x86 setup code. 2007-07-12 10:55:54 -07:00
boot.h [x86 setup] Fix assembly constraints 2007-07-18 11:36:17 -07:00
cmdline.c Command-line parsing code for the new x86 setup code 2007-07-12 10:55:55 -07:00
code16gcc.h Header file to produce 16-bit code with gcc 2007-07-12 10:55:54 -07:00
copy.S String-handling functions for the new x86 setup code. 2007-07-12 10:55:55 -07:00
cpu.c CPU features verification for the new x86 setup code 2007-07-12 10:55:55 -07:00
cpucheck.c [x86 setup] Fix assembly constraints 2007-07-18 11:36:17 -07:00
edd.c EDD probing code for the new x86 setup code 2007-07-12 10:55:55 -07:00
header.S Assembly header and main routine for new x86 setup code 2007-07-12 10:55:55 -07:00
install.sh
main.c Assembly header and main routine for new x86 setup code 2007-07-12 10:55:55 -07:00
Makefile Use the new x86 setup code for i386 2007-07-12 10:55:55 -07:00
mca.c [x86 setup] Fix assembly constraints 2007-07-18 11:36:17 -07:00
memory.c Memory probing support for the new x86 setup code 2007-07-12 10:55:55 -07:00
mtools.conf.in
pm.c [x86 setup] Fix assembly constraints 2007-07-18 11:36:17 -07:00
pmjump.S Code for actual protected-mode entry 2007-07-12 10:55:55 -07:00
printf.c Console-writing code for the new x86 setup code 2007-07-12 10:55:55 -07:00
setup.ld Linker script for the new x86 setup code 2007-07-12 10:55:55 -07:00
string.c String-handling functions for the new x86 setup code. 2007-07-12 10:55:55 -07:00
tty.c Console-writing code for the new x86 setup code 2007-07-12 10:55:55 -07:00
version.c Version string for the new x86 setup code 2007-07-12 10:55:55 -07:00
vesa.h Video mode probing support for the new x86 setup code 2007-07-12 10:55:55 -07:00
video-bios.c Video mode probing support for the new x86 setup code 2007-07-12 10:55:55 -07:00
video-vesa.c Video mode probing support for the new x86 setup code 2007-07-12 10:55:55 -07:00
video-vga.c Video mode probing support for the new x86 setup code 2007-07-12 10:55:55 -07:00
video.c [x86 setup] VGA: Clear the Protect bit before setting the vertical height 2007-07-18 11:36:17 -07:00
video.h Video mode probing support for the new x86 setup code 2007-07-12 10:55:55 -07:00
voyager.c [x86 setup] Fix assembly constraints 2007-07-18 11:36:17 -07:00