diff options
| author | Stefan Reinauer <reinauer@chromium.org> | 2013-05-20 15:21:48 -0700 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2013-07-10 21:46:33 +0200 |
| commit | 6c184d6855a11d42f9d77bc9ddb8dfeb608072b6 (patch) | |
| tree | 6818dfc123613e5ceabe092de64a1abafc4b1015 /src/cpu/samsung/exynos5420/cpu.c | |
| parent | f17519120a4d76cd18d12e94987b65b336f32f59 (diff) | |
exynos5420: Don't disable and re-enable the MMU when uncaching the framebuffer
At one time it seemed to be necessary to disable and then re-enable the
MMU when setting the framebuffer to be uncache-able due to bugs in the
MMU management code. Since those bugs have been fixed, this is no longer
necessary.
Change-Id: I7ce825cf5eaaa95119364d780cba0935752e4632
Signed-off-by: Gabe Black <gabeblack@chromium.org>
Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Reviewed-on: http://review.coreboot.org/3667
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/cpu/samsung/exynos5420/cpu.c')
| -rw-r--r-- | src/cpu/samsung/exynos5420/cpu.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/src/cpu/samsung/exynos5420/cpu.c b/src/cpu/samsung/exynos5420/cpu.c index e83c16ad0a..1d511743b2 100644 --- a/src/cpu/samsung/exynos5420/cpu.c +++ b/src/cpu/samsung/exynos5420/cpu.c @@ -105,15 +105,11 @@ static void exynos_displayport_init(device_t dev) * Note: We may want to do something clever to ensure the framebuffer * region is aligned such that we don't change dcache policy for other * stuff inadvertantly. - * - * FIXME: Is disabling/re-enabling the MMU entirely necessary? */ uint32_t lower = ALIGN_DOWN(lcdbase, MiB); uint32_t upper = ALIGN_UP(lcdbase + fb_size, MiB); dcache_clean_invalidate_by_mva(lower, upper - lower); - dcache_mmu_disable(); mmu_config_range(lower/MiB, (upper - lower)/MiB, DCACHE_OFF); - dcache_mmu_enable(); mmio_resource(dev, 1, lcdbase/KiB, (fb_size + KiB - 1)/KiB); printk(BIOS_DEBUG, |