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| author | Simon Glass <sjg@chromium.org> | 2012-10-17 13:24:54 +0000 |
|---|---|---|
| committer | Tom Warren <twarren@nvidia.com> | 2012-11-19 08:15:38 -0700 |
| commit | 676d319ef5f450ca7845555f75de496b96cd688e (patch) | |
| tree | 8bb6a995ac1613fb5a6c5b95f55d0fc9f1f9936c /README | |
| parent | 0dde7f53797098cf7021f6a7ca6c15bfee405db1 (diff) | |
| download | blackbird-obmc-uboot-676d319ef5f450ca7845555f75de496b96cd688e.tar.gz blackbird-obmc-uboot-676d319ef5f450ca7845555f75de496b96cd688e.zip | |
lcd: Add CONFIG_LCD_ALIGNMENT to select frame buffer alignment
The normal alignment is PAGE_SIZE, but if this is defined, we can support
other alignments.
The motivation for this change is to make the display section-aligned on
ARM so that we can easily turn off data caching for the frame buffer region
without resorting to level 2 page tables.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Diffstat (limited to 'README')
| -rw-r--r-- | README | 10 |
1 files changed, 10 insertions, 0 deletions
@@ -1469,6 +1469,16 @@ CBFS (Coreboot Filesystem) support Normally display is black on white background; define CONFIG_SYS_WHITE_ON_BLACK to get it inverted. + + CONFIG_LCD_ALIGNMENT + + Normally the LCD is page-aligned (tyically 4KB). If this is + defined then the LCD will be aligned to this value instead. + For ARM it is sometimes useful to use MMU_SECTION_SIZE + here, since it is cheaper to change data cache settings on + a per-section basis. + + - Splash Screen Support: CONFIG_SPLASH_SCREEN If this option is set, the environment is checked for |
