diff options
Diffstat (limited to 'arch/arm/lib')
| -rw-r--r-- | arch/arm/lib/Makefile | 24 | ||||
| -rw-r--r-- | arch/arm/lib/cache.c | 11 | ||||
| -rw-r--r-- | arch/arm/lib/memcpy.S | 4 | ||||
| -rw-r--r-- | arch/arm/lib/memset.S | 2 |
4 files changed, 38 insertions, 3 deletions
diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile index 2bdfaba5b7..f3db7b58cb 100644 --- a/arch/arm/lib/Makefile +++ b/arch/arm/lib/Makefile @@ -60,3 +60,27 @@ obj-$(CONFIG_DEBUG_LL) += debug.o ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS))) extra-y += eabi_compat.o endif + +# some files can only build in ARM or THUMB2, not THUMB1 + +ifdef CONFIG_SYS_THUMB_BUILD +ifndef CONFIG_HAS_THUMB2 + +# for C files, just apend -marm, which will override previous -mthumb* + +CFLAGS_cache.o := -marm +CFLAGS_cache-cp15.o := -marm + +# For .S, drop -mthumb* and other thumb-related options. +# CFLAGS_REMOVE_* would not have an effet, so AFLAGS_REMOVE_* +# was implemented and is used here. +# Also, define ${target}_NO_THUMB_BUILD for these two targets +# so that the code knows it should not use Thumb. + +AFLAGS_REMOVE_memset.o := -mthumb -mthumb-interwork +AFLAGS_REMOVE_memcpy.o := -mthumb -mthumb-interwork +AFLAGS_memset.o := -DMEMSET_NO_THUMB_BUILD +AFLAGS_memcpy.o := -DMEMCPY_NO_THUMB_BUILD + +endif +endif diff --git a/arch/arm/lib/cache.c b/arch/arm/lib/cache.c index cd13db3440..3bd87105c5 100644 --- a/arch/arm/lib/cache.c +++ b/arch/arm/lib/cache.c @@ -88,3 +88,14 @@ phys_addr_t noncached_alloc(size_t size, size_t align) return next; } #endif /* CONFIG_SYS_NONCACHED_MEMORY */ + +#if defined(CONFIG_SYS_THUMB_BUILD) +void invalidate_l2_cache(void) +{ + unsigned int val = 0; + + asm volatile("mcr p15, 1, %0, c15, c11, 0 @ invl l2 cache" + : : "r" (val) : "cc"); + isb(); +} +#endif diff --git a/arch/arm/lib/memcpy.S b/arch/arm/lib/memcpy.S index eeaf003529..7d9fc0f9be 100644 --- a/arch/arm/lib/memcpy.S +++ b/arch/arm/lib/memcpy.S @@ -13,7 +13,7 @@ #include <linux/linkage.h> #include <asm/assembler.h> -#ifdef CONFIG_SYS_THUMB_BUILD +#if defined(CONFIG_SYS_THUMB_BUILD) && !defined(MEMCPY_NO_THUMB_BUILD) #define W(instr) instr.w #else #define W(instr) instr @@ -62,7 +62,7 @@ /* Prototype: void *memcpy(void *dest, const void *src, size_t n); */ .syntax unified -#ifdef CONFIG_SYS_THUMB_BUILD +#if defined(CONFIG_SYS_THUMB_BUILD) && !defined(MEMCPY_NO_THUMB_BUILD) .thumb .thumb_func #endif diff --git a/arch/arm/lib/memset.S b/arch/arm/lib/memset.S index 7208f20dda..df053a31d5 100644 --- a/arch/arm/lib/memset.S +++ b/arch/arm/lib/memset.S @@ -16,7 +16,7 @@ .align 5 .syntax unified -#ifdef CONFIG_SYS_THUMB_BUILD +#if defined(CONFIG_SYS_THUMB_BUILD) && !defined(MEMSET_NO_THUMB_BUILD) .thumb .thumb_func #endif |