[U-Boot] [PATCH v2 10/22] x86: Use cache, don't clear the display in video BIOS
Simon Glass
sjg at chromium.org
Fri Jan 2 00:18:03 CET 2015
There is no need to run with the cache disabled, and there is no point in
clearing the display frame buffer since U-Boot does it later.
Signed-off-by: Simon Glass <sjg at chromium.org>
---
Changes in v2: None
arch/x86/lib/bios.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/x86/lib/bios.c b/arch/x86/lib/bios.c
index d1f8933..4285348 100644
--- a/arch/x86/lib/bios.c
+++ b/arch/x86/lib/bios.c
@@ -210,8 +210,8 @@ static u8 vbe_set_mode(struct vbe_mode_info *mi)
debug("VBE: Setting VESA mode %#04x\n", mi->video_mode);
/* request linear framebuffer mode */
mi->video_mode |= (1 << 14);
- /* request clearing of framebuffer */
- mi->video_mode &= ~(1 << 15);
+ /* don't clear the framebuffer, we do that later */
+ mi->video_mode |= (1 << 15);
realmode_interrupt(0x10, VESA_SET_MODE, mi->video_mode,
0x0000, 0x0000, 0x0000, 0x0000);
@@ -262,7 +262,6 @@ void bios_run_on_x86(pci_dev_t pcidev, unsigned long addr, int vesa_mode,
/* Make sure the code is placed. */
setup_realmode_code();
- disable_caches();
debug("Calling Option ROM at %lx, pci device %#x...", addr, num_dev);
/* Option ROM entry point is at OPROM start + 3 */
--
2.2.0.rc0.207.ga3a616c
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