diff options
author | Jeroen Hofstee <jeroen@myspectrum.nl> | 2014-10-08 22:57:23 +0200 |
---|---|---|
committer | Tom Rini <trini@ti.com> | 2014-10-25 06:58:51 -0400 |
commit | 00dcb07c545a6c5650fa5d2350b4f3f14e92274c (patch) | |
tree | 0e5a22f78c5a562c414f2fe20b986818e54a1910 /drivers/mtd/cfi_flash.c | |
parent | dd2a6cd0f7929142066a0221cebba05cbd851199 (diff) |
cti_flash.c: use __weak when requested for flash_(read|write){8,16,32,64}
For various reasons (design, errata) boards may need to implement their
own versions of these accessors. So in the case of
CONFIG_CFI_FLASH_USE_WEAK_ACCESSOR mark the functions as weak. In the
normal case mark them as static to allow for better optimization.
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
[trini: Reword commit message]
Signed-off-by: Tom Rini <trini@ti.com>
Diffstat (limited to 'drivers/mtd/cfi_flash.c')
-rw-r--r-- | drivers/mtd/cfi_flash.c | 50 |
1 files changed, 16 insertions, 34 deletions
diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c index 9b3175d87f..50983b837b 100644 --- a/drivers/mtd/cfi_flash.c +++ b/drivers/mtd/cfi_flash.c @@ -63,6 +63,12 @@ flash_info_t flash_info[CFI_MAX_FLASH_BANKS]; /* FLASH chips info */ #define CONFIG_SYS_FLASH_CFI_WIDTH FLASH_CFI_8BIT #endif +#ifdef CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS +#define __maybe_weak __weak +#else +#define __maybe_weak static +#endif + /* * 0xffff is an undefined value for the configuration register. When * this value is returned, the configuration register shall not be @@ -81,14 +87,12 @@ static u16 cfi_flash_config_reg(int i) int cfi_flash_num_flash_banks = CONFIG_SYS_MAX_FLASH_BANKS_DETECT; #endif -static phys_addr_t __cfi_flash_bank_addr(int i) +__weak phys_addr_t cfi_flash_bank_addr(int i) { return ((phys_addr_t [])CONFIG_SYS_FLASH_BANKS_LIST)[i]; } -phys_addr_t cfi_flash_bank_addr(int i) - __attribute__((weak, alias("__cfi_flash_bank_addr"))); -static unsigned long __cfi_flash_bank_size(int i) +__weak unsigned long cfi_flash_bank_size(int i) { #ifdef CONFIG_SYS_FLASH_BANKS_SIZES return ((unsigned long [])CONFIG_SYS_FLASH_BANKS_SIZES)[i]; @@ -96,71 +100,49 @@ static unsigned long __cfi_flash_bank_size(int i) return 0; #endif } -unsigned long cfi_flash_bank_size(int i) - __attribute__((weak, alias("__cfi_flash_bank_size"))); -static void __flash_write8(u8 value, void *addr) +__maybe_weak void flash_write8(u8 value, void *addr) { __raw_writeb(value, addr); } -static void __flash_write16(u16 value, void *addr) +__maybe_weak void flash_write16(u16 value, void *addr) { __raw_writew(value, addr); } -static void __flash_write32(u32 value, void *addr) +__maybe_weak void flash_write32(u32 value, void *addr) { __raw_writel(value, addr); } -static void __flash_write64(u64 value, void *addr) +__maybe_weak void flash_write64(u64 value, void *addr) { /* No architectures currently implement __raw_writeq() */ *(volatile u64 *)addr = value; } -static u8 __flash_read8(void *addr) +__maybe_weak u8 flash_read8(void *addr) { return __raw_readb(addr); } -static u16 __flash_read16(void *addr) +__maybe_weak u16 flash_read16(void *addr) { return __raw_readw(addr); } -static u32 __flash_read32(void *addr) +__maybe_weak u32 flash_read32(void *addr) { return __raw_readl(addr); } -static u64 __flash_read64(void *addr) +__maybe_weak u64 flash_read64(void *addr) { /* No architectures currently implement __raw_readq() */ return *(volatile u64 *)addr; } -#ifdef CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS -void flash_write8(u8 value, void *addr)__attribute__((weak, alias("__flash_write8"))); -void flash_write16(u16 value, void *addr)__attribute__((weak, alias("__flash_write16"))); -void flash_write32(u32 value, void *addr)__attribute__((weak, alias("__flash_write32"))); -void flash_write64(u64 value, void *addr)__attribute__((weak, alias("__flash_write64"))); -u8 flash_read8(void *addr)__attribute__((weak, alias("__flash_read8"))); -u16 flash_read16(void *addr)__attribute__((weak, alias("__flash_read16"))); -u32 flash_read32(void *addr)__attribute__((weak, alias("__flash_read32"))); -u64 flash_read64(void *addr)__attribute__((weak, alias("__flash_read64"))); -#else -#define flash_write8 __flash_write8 -#define flash_write16 __flash_write16 -#define flash_write32 __flash_write32 -#define flash_write64 __flash_write64 -#define flash_read8 __flash_read8 -#define flash_read16 __flash_read16 -#define flash_read32 __flash_read32 -#define flash_read64 __flash_read64 -#endif - /*----------------------------------------------------------------------- */ #if defined(CONFIG_ENV_IS_IN_FLASH) || defined(CONFIG_ENV_ADDR_REDUND) || (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) |