diff options
Diffstat (limited to 'target/linux/gemini/patches-4.14/0001-cache-patch-from-OpenWRT.patch')
| -rw-r--r-- | target/linux/gemini/patches-4.14/0001-cache-patch-from-OpenWRT.patch | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/target/linux/gemini/patches-4.14/0001-cache-patch-from-OpenWRT.patch b/target/linux/gemini/patches-4.14/0001-cache-patch-from-OpenWRT.patch new file mode 100644 index 0000000000..4430ffee9d --- /dev/null +++ b/target/linux/gemini/patches-4.14/0001-cache-patch-from-OpenWRT.patch @@ -0,0 +1,50 @@ +From 57615e112aba6ae4c831d50e769c2c102f013686 Mon Sep 17 00:00:00 2001 +From: Linus Walleij <linus.walleij@linaro.org> +Date: Tue, 7 Jun 2016 22:53:24 +0200 +Subject: [PATCH 01/31] cache patch from OpenWRT + +--- + arch/arm/mm/cache-fa.S | 17 ++++++++++++++++- + 1 file changed, 16 insertions(+), 1 deletion(-) + +--- a/arch/arm/mm/cache-fa.S ++++ b/arch/arm/mm/cache-fa.S +@@ -24,7 +24,8 @@ + /* + * The size of one data cache line. + */ +-#define CACHE_DLINESIZE 16 ++#define CACHE_DLINESIZE 16 ++#define CACHE_DLINESHIFT 4 + + /* + * The total size of the data cache. +@@ -169,7 +170,17 @@ ENTRY(fa_flush_kern_dcache_area) + * - start - virtual start address + * - end - virtual end address + */ ++__flush_whole_dcache: ++ mcr p15, 0, r0, c7, c14, 0 @ clean/invalidate D cache ++ mov r0, #0 ++ mcr p15, 0, r0, c7, c10, 4 @ drain write buffer ++ mov pc, lr ++ + fa_dma_inv_range: ++ sub r3, r1, r0 @ calculate total size ++ cmp r3, #CACHE_DLIMIT @ total size >= limit? ++ bhs __flush_whole_dcache @ flush whole D cache ++ + tst r0, #CACHE_DLINESIZE - 1 + bic r0, r0, #CACHE_DLINESIZE - 1 + mcrne p15, 0, r0, c7, c14, 1 @ clean & invalidate D entry +@@ -193,6 +204,10 @@ fa_dma_inv_range: + * - end - virtual end address + */ + fa_dma_clean_range: ++ sub r3, r1, r0 @ calculate total size ++ cmp r3, #CACHE_DLIMIT @ total size >= limit? ++ bhs __flush_whole_dcache @ flush whole D cache ++ + bic r0, r0, #CACHE_DLINESIZE - 1 + 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry + add r0, r0, #CACHE_DLINESIZE |