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[POWERPC] Fix various offb and BootX-related issues

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This patch fixes various issues with offb (the default fbdev used on
powerpc when no proper fbdev is supported). It was broken when using
BootX under some circumstances and would fail to properly get the
framebuffer base address in others.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt
2006-07-03 17:19:48 +10:00
committed by Paul Mackerras
parent 4ce631e7a2
commit ab13446616
4 changed files with 157 additions and 169 deletions
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20
arch/powerpc/kernel/btext.c
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@ -111,7 +111,7 @@ void __init btext_setup_display(int width, int height, int depth, int pitch,
logicalDisplayBase = (unsigned char *)address;
dispDeviceBase = (unsigned char *)address;
dispDeviceRowBytes = pitch;
dispDeviceDepth = depth;
dispDeviceDepth = depth == 15 ? 16 : depth;
dispDeviceRect[0] = dispDeviceRect[1] = 0;
dispDeviceRect[2] = width;
dispDeviceRect[3] = height;
@ -160,20 +160,28 @@ int btext_initialize(struct device_node *np)
unsigned long address = 0;
u32 *prop;
prop = (u32 *)get_property(np, "width", NULL);
prop = (u32 *)get_property(np, "linux,bootx-width", NULL);
if (prop == NULL)
prop = (u32 *)get_property(np, "width", NULL);
if (prop == NULL)
return -EINVAL;
width = *prop;
prop = (u32 *)get_property(np, "height", NULL);
prop = (u32 *)get_property(np, "linux,bootx-height", NULL);
if (prop == NULL)
prop = (u32 *)get_property(np, "height", NULL);
if (prop == NULL)
return -EINVAL;
height = *prop;
prop = (u32 *)get_property(np, "depth", NULL);
prop = (u32 *)get_property(np, "linux,bootx-depth", NULL);
if (prop == NULL)
prop = (u32 *)get_property(np, "depth", NULL);
if (prop == NULL)
return -EINVAL;
depth = *prop;
pitch = width * ((depth + 7) / 8);
prop = (u32 *)get_property(np, "linebytes", NULL);
prop = (u32 *)get_property(np, "linux,bootx-linebytes", NULL);
if (prop == NULL)
prop = (u32 *)get_property(np, "linebytes", NULL);
if (prop)
pitch = *prop;
if (pitch == 1)
@ -194,7 +202,7 @@ int btext_initialize(struct device_node *np)
g_max_loc_Y = height / 16;
dispDeviceBase = (unsigned char *)address;
dispDeviceRowBytes = pitch;
dispDeviceDepth = depth;
dispDeviceDepth = depth == 15 ? 16 : depth;
dispDeviceRect[0] = dispDeviceRect[1] = 0;
dispDeviceRect[2] = width;
dispDeviceRect[3] = height;