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| author | Gabe Black <gabeblack@google.com> | 2013-05-18 22:57:34 -0700 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2013-07-10 21:06:46 +0200 |
| commit | 986162b25f1038e5425713883310ba6002859d7d (patch) | |
| tree | ec5704c64408bb067c02b8b65d42b22afc366c31 /src/cpu | |
| parent | 800790d4e1e4817a140c706a32b5448cbd9d0c45 (diff) | |
| download | coreboot-986162b25f1038e5425713883310ba6002859d7d.tar.xz | |
exynos5250: 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: I5f7b9bd14dc9929efe1834ec9a258d388b8c94e9
Signed-off-by: Gabe Black <gabeblack@chromium.org>
Reviewed-on: http://review.coreboot.org/3654
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/cpu')
| -rw-r--r-- | src/cpu/samsung/exynos5250/cpu.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/src/cpu/samsung/exynos5250/cpu.c b/src/cpu/samsung/exynos5250/cpu.c index 3ab57c9f05..d2a6df7fc4 100644 --- a/src/cpu/samsung/exynos5250/cpu.c +++ b/src/cpu/samsung/exynos5250/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, |