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authorAntonino A. Daplas <adaplas@gmail.com>2006-04-10 22:55:48 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-11 06:18:54 -0700
commit89ec4c238e7a3d7e660291f3f1a8181381baad77 (patch)
tree8ba2ab49cea71cfff21ee7a56717f83746cb8d0c /arch/x86_64
parentac50ab3e45436900b5d73edd0c6b0744af560535 (diff)
[PATCH] vesafb: Fix incorrect logo colors in x86_64
Bugzilla Bug 6299: A pixel size of 8 bits produces wrong logo colors in x86_64. The driver has 2 methods for setting the color map, using the protected mode interface provided by the video BIOS and directly writing to the VGA registers. The former is not supported in x86_64 and the latter is enabled only in i386. Fix by enabling the latter method in x86_64 only if supported by the BIOS. If both methods are unsupported, change the visual of vesafb to STATIC_PSEUDOCOLOR. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64')
-rw-r--r--arch/x86_64/boot/video.S5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86_64/boot/video.S b/arch/x86_64/boot/video.S
index 0587477c99f2..32327bb37aff 100644
--- a/arch/x86_64/boot/video.S
+++ b/arch/x86_64/boot/video.S
@@ -97,6 +97,7 @@
#define PARAM_VESAPM_OFF 0x30
#define PARAM_LFB_PAGES 0x32
#define PARAM_VESA_ATTRIB 0x34
+#define PARAM_CAPABILITIES 0x36
/* Define DO_STORE according to CONFIG_VIDEO_RETAIN */
#ifdef CONFIG_VIDEO_RETAIN
@@ -233,6 +234,10 @@ mopar_gr:
movw 18(%di), %ax
movl %eax, %fs:(PARAM_LFB_SIZE)
+# store mode capabilities
+ movl 10(%di), %eax
+ movl %eax, %fs:(PARAM_CAPABILITIES)
+
# switching the DAC to 8-bit is for <= 8 bpp only
movw %fs:(PARAM_LFB_DEPTH), %ax
cmpw $8, %ax