diff options
| author | Wu, Josh <Josh.wu@atmel.com> | 2015-07-27 11:40:16 +0800 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2015-08-12 20:47:47 -0400 |
| commit | 387871a10edc777a5d94bfdbd6b86e493991826e (patch) | |
| tree | 7461973b0510ef8f0ca6eb3df08fdb350edee0c3 | |
| parent | 4dbe4b168bd3b315930bf65bb6c95eac10170026 (diff) | |
ARM: cache: add an empty stub function for invalidate/flush dcache
Since some driver like ohci, lcd used dcache functions. But some ARM
cpu don't implement the invalidate_dcache_range()/flush_dcache_range()
functions.
To avoid compiling errors this patch adds an weak empty stub function
for all ARM cpu in arch/arm/lib/cache.c.
And ARM cpu still can implemnt its own cache functions on the cpu folder.
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Reviewed-by: York Sun <yorksun@freescale.com>
| -rw-r--r-- | arch/arm/cpu/arm11/cpu.c | 8 | ||||
| -rw-r--r-- | arch/arm/cpu/arm926ejs/cache.c | 8 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/cache_v7.c | 8 | ||||
| -rw-r--r-- | arch/arm/cpu/armv8/cache_v8.c | 8 | ||||
| -rw-r--r-- | arch/arm/lib/cache.c | 9 |
5 files changed, 9 insertions, 32 deletions
diff --git a/arch/arm/cpu/arm11/cpu.c b/arch/arm/cpu/arm11/cpu.c index 5d4b3c2a02b..06dee0fc1b9 100644 --- a/arch/arm/cpu/arm11/cpu.c +++ b/arch/arm/cpu/arm11/cpu.c @@ -124,14 +124,6 @@ void flush_dcache_all(void) { } -void invalidate_dcache_range(unsigned long start, unsigned long stop) -{ -} - -void flush_dcache_range(unsigned long start, unsigned long stop) -{ -} - void flush_cache(unsigned long start, unsigned long size) { } diff --git a/arch/arm/cpu/arm926ejs/cache.c b/arch/arm/cpu/arm926ejs/cache.c index 8d7873c9af3..99d1a139b0d 100644 --- a/arch/arm/cpu/arm926ejs/cache.c +++ b/arch/arm/cpu/arm926ejs/cache.c @@ -83,14 +83,6 @@ void flush_dcache_all(void) { } -void invalidate_dcache_range(unsigned long start, unsigned long stop) -{ -} - -void flush_dcache_range(unsigned long start, unsigned long stop) -{ -} - void flush_cache(unsigned long start, unsigned long size) { } diff --git a/arch/arm/cpu/armv7/cache_v7.c b/arch/arm/cpu/armv7/cache_v7.c index e8ee875981f..4f0e4062a2d 100644 --- a/arch/arm/cpu/armv7/cache_v7.c +++ b/arch/arm/cpu/armv7/cache_v7.c @@ -304,14 +304,6 @@ void flush_dcache_all(void) { } -void invalidate_dcache_range(unsigned long start, unsigned long stop) -{ -} - -void flush_dcache_range(unsigned long start, unsigned long stop) -{ -} - void arm_init_before_mmu(void) { } diff --git a/arch/arm/cpu/armv8/cache_v8.c b/arch/arm/cpu/armv8/cache_v8.c index c22f7b6a51e..cd160c4b633 100644 --- a/arch/arm/cpu/armv8/cache_v8.c +++ b/arch/arm/cpu/armv8/cache_v8.c @@ -180,14 +180,6 @@ void flush_dcache_all(void) { } -void invalidate_dcache_range(unsigned long start, unsigned long stop) -{ -} - -void flush_dcache_range(unsigned long start, unsigned long stop) -{ -} - void dcache_enable(void) { } diff --git a/arch/arm/lib/cache.c b/arch/arm/lib/cache.c index 74cfde637c1..bc48f53f4c5 100644 --- a/arch/arm/lib/cache.c +++ b/arch/arm/lib/cache.c @@ -53,6 +53,15 @@ __weak void enable_caches(void) puts("WARNING: Caches not enabled\n"); } +__weak void invalidate_dcache_range(unsigned long start, unsigned long stop) +{ + /* An empty stub, real implementation should be in platform code */ +} +__weak void flush_dcache_range(unsigned long start, unsigned long stop) +{ + /* An empty stub, real implementation should be in platform code */ +} + #ifdef CONFIG_SYS_NONCACHED_MEMORY /* * Reserve one MMU section worth of address space below the malloc() area that |