diff options
| -rw-r--r-- | cpu/microblaze/start.S | 33 | ||||
| -rw-r--r-- | include/common.h | 4 |
2 files changed, 37 insertions, 0 deletions
diff --git a/cpu/microblaze/start.S b/cpu/microblaze/start.S index 29481af9a..453815818 100644 --- a/cpu/microblaze/start.S +++ b/cpu/microblaze/start.S @@ -117,3 +117,36 @@ clear_bss: 3: /* jumping to board_init */ brai board_init 1: bri 1b + +/* + * Read 16bit little endian + */ + .text + .global in16 + .ent in16 + .align 2 +in16: lhu r3, r0, r5 + bslli r4, r3, 8 + bsrli r3, r3, 8 + andi r4, r4, 0xffff + or r3, r3, r4 + rtsd r15, 8 + sext16 r3, r3 + .end in16 + +/* + * Write 16bit little endian + * first parameter(r5) - address, second(r6) - short value + */ + .text + .global out16 + .ent out16 + .align 2 +out16: bslli r3, r6, 8 + bsrli r6, r6, 8 + andi r3, r3, 0xffff + or r3, r3, r6 + sh r3, r0, r5 + rtsd r15, 8 + or r0, r0, r0 + .end out16 diff --git a/include/common.h b/include/common.h index b162dbd7c..40fbba532 100644 --- a/include/common.h +++ b/include/common.h @@ -402,6 +402,10 @@ void ppcDcbi(unsigned long value); void ppcSync(void); void ppcDcbz(unsigned long value); #endif +#if defined (CONFIG_MICROBLAZE) +unsigned short in16(unsigned int); +void out16(unsigned int, unsigned short value); +#endif #if defined (CONFIG_MPC83XX) void ppcDWload(unsigned int *addr, unsigned int *ret); |