diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv7/start.S | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S index 644337ebf6..94fa849880 100644 --- a/arch/arm/cpu/armv7/start.S +++ b/arch/arm/cpu/armv7/start.S @@ -182,11 +182,20 @@ stack_setup: ldr r3, _bss_start_ofs add r2, r0, r3 /* r2 <- source end address */ +#if 0 copy_loop: ldmia r0!, {r9-r10} /* copy from source address [r0] */ stmia r1!, {r9-r10} /* copy to target address [r1] */ cmp r0, r2 /* until source end address [r2] */ blo copy_loop +#else + mov r7, r4 + mov r0, r1 + adr r1, _start + ldr r2, _bss_start_ofs + bl memcpy + mov r4, r7 +#endif #ifndef CONFIG_PRELOADER /* @@ -236,10 +245,17 @@ clear_bss: add r1, r1, r4 mov r2, #0x00000000 /* clear */ +#if 0 clbss_l:str r2, [r0] /* clear loop... */ add r0, r0, #4 cmp r0, r1 bne clbss_l +#else + sub r2, r1, r0 + mov r1, #0 + bl memset +#endif + #endif /* #ifndef CONFIG_PRELOADER */ /* |