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authorHans de Goede <hdegoede@redhat.com>2015-02-02 17:13:29 +0100
committerHans de Goede <hdegoede@redhat.com>2015-02-16 19:40:59 +0100
commit5633a296ebb970d0a6be839fb37eaf8a11aa35f8 (patch)
tree454f1f463fbca981853c5865bd85c292da84ea85 /include/configs
parent8910a7d37a0c0c7b73c8b1e6175966d58979ba5c (diff)
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sunxi: video: Do not use CONFIG_SYS_MEM_TOP_HIDE for the framebuffer
Do not use CONFIG_SYS_MEM_TOP_HIDE for the framebuffer, instead override board_get_usable_ram_top to make sure that u-boot is not relocated into the area where we want to use the framebuffer, and patch the devicetree from sunxi_simplefb_setup() to tell the kernel to not touch the framebuffer. This makes u-boot properly see the framebuffer as dram, and initalize the level 2 cache for it, fixing the very slow cfb scrolling problem. As an added bonus this stops us from reserving the framebuffer when simplefb is not used because an older kernel is booted, or hdp is used and no hdmi cable was plugged in, freeing up the memory for kernel use in these cases. Reported-by: Siarhei Siamashka <siarhei.siamashka@gmail.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
Diffstat (limited to 'include/configs')
-rw-r--r--include/configs/sunxi-common.h8
1 files changed, 3 insertions, 5 deletions
diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h
index cea52db..33c0614 100644
--- a/include/configs/sunxi-common.h
+++ b/include/configs/sunxi-common.h
@@ -210,10 +210,10 @@
#ifdef CONFIG_VIDEO
/*
- * The amount of RAM that is reserved for the FB. This will not show up as
- * RAM to the kernel, but will be reclaimed by a KMS driver in future.
+ * The amount of RAM to keep free at the top of RAM when relocating u-boot,
+ * to use as framebuffer. This must be a multiple of 4096.
*/
-#define CONFIG_SUNXI_FB_SIZE (9 << 20)
+#define CONFIG_SUNXI_MAX_FB_SIZE (9 << 20)
/* Do we want to initialize a simple FB? */
#define CONFIG_VIDEO_DT_SIMPLEFB
@@ -231,8 +231,6 @@
/* stop x86 thinking in cfbconsole from trying to init a pc keyboard */
#define CONFIG_VGA_AS_SINGLE_DEVICE
-#define CONFIG_SYS_MEM_TOP_HIDE ((CONFIG_SUNXI_FB_SIZE + 0xFFF) & ~0xFFF)
-
/* To be able to hook simplefb into dt */
#ifdef CONFIG_VIDEO_DT_SIMPLEFB
#define CONFIG_OF_BOARD_SETUP