diff options
| -rw-r--r-- | arch/m68k/include/asm/io.h | 2 | ||||
| -rw-r--r-- | board/freescale/m5253demo/m5253demo.c | 4 |
2 files changed, 6 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/io.h b/arch/m68k/include/asm/io.h index 531f420336c..d86eaf95eac 100644 --- a/arch/m68k/include/asm/io.h +++ b/arch/m68k/include/asm/io.h @@ -81,6 +81,8 @@ #define outl(val, port) out_le32((u32 *)((port)+_IO_BASE), (val)) #endif +#define mb() __asm__ __volatile__ ("" : : : "memory") + extern inline void _insb(volatile u8 * port, void *buf, int ns) { u8 *data = (u8 *) buf; diff --git a/board/freescale/m5253demo/m5253demo.c b/board/freescale/m5253demo/m5253demo.c index 4772074d81f..8ffb2cc0447 100644 --- a/board/freescale/m5253demo/m5253demo.c +++ b/board/freescale/m5253demo/m5253demo.c @@ -27,6 +27,7 @@ #include <common.h> #include <asm/immap.h> #include <netdev.h> +#include <asm/io.h> int checkboard(void) { @@ -63,10 +64,12 @@ phys_size_t initdram(int board_type) __asm__("nop"); mbar_writeLong(MCFSIM_DACR0, 0x0000322c); + mb(); __asm__("nop"); /* Write to this block to initiate precharge */ *(u32 *) (CONFIG_SYS_SDRAM_BASE) = 0xa5a5a5a5; + mb(); __asm__("nop"); /* Set RE bit in DACR */ @@ -83,6 +86,7 @@ phys_size_t initdram(int board_type) __asm__("nop"); *(u32 *) (CONFIG_SYS_SDRAM_BASE + 0x800) = 0xa5a5a5a5; + mb(); } return dramsize; |