[U-Boot] [PATCH] cfi_flash: Make all flash access functions weak

[Stefan Roese]

This patch defines all flash access functions as weak so that
they can be overridden by board specific versions.

This will be used by the upcoming VCTH board support where the NOR
FLASH unfortunately can't be accessed memory-mapped. Special
accessor functions are needed here.

Signed-off-by: Stefan Roese <sr at denx.de>
---
 drivers/mtd/cfi_flash.c |   21 ++++++++++++++-------
 1 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c
index 24e9b9f..4d82a51 100644
--- a/drivers/mtd/cfi_flash.c
+++ b/drivers/mtd/cfi_flash.c
@@ -209,38 +209,38 @@ struct cfi_pri_hdr {
 	u8	minor_version;
 } __attribute__((packed));
 
-static void flash_write8(u8 value, void *addr)
+static void __flash_write8(u8 value, void *addr)
 {
 	__raw_writeb(value, addr);
 }
 
-static void flash_write16(u16 value, void *addr)
+static void __flash_write16(u16 value, void *addr)
 {
 	__raw_writew(value, addr);
 }
 
-static void flash_write32(u32 value, void *addr)
+static void __flash_write32(u32 value, void *addr)
 {
 	__raw_writel(value, addr);
 }
 
-static void flash_write64(u64 value, void *addr)
+static void __flash_write64(u64 value, void *addr)
 {
 	/* No architectures currently implement __raw_writeq() */
 	*(volatile u64 *)addr = value;
 }
 
-static u8 flash_read8(void *addr)
+static u8 __flash_read8(void *addr)
 {
 	return __raw_readb(addr);
 }
 
-static u16 flash_read16(void *addr)
+static u16 __flash_read16(void *addr)
 {
 	return __raw_readw(addr);
 }
 
-static u32 flash_read32(void *addr)
+static u32 __flash_read32(void *addr)
 {
 	return __raw_readl(addr);
 }
@@ -251,6 +251,13 @@ static u64 __flash_read64(void *addr)
 	return *(volatile u64 *)addr;
 }
 
+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")));
 
 /*-----------------------------------------------------------------------
-- 
1.6.0.4