diff options
| author | Daniel Schwierzeck | 2016-01-09 22:24:47 +0100 |
|---|---|---|
| committer | Daniel Schwierzeck | 2016-02-01 22:13:24 +0100 |
| commit | e26e8dc8f4da08eb0a58f14e23e78c008e6a6440 (patch) | |
| tree | 3405e653cd8cbedc7565326e2ff764df318d587d /arch | |
| parent | a62790997f9a2e50a168c73e752a471590e8cf4f (diff) | |
MIPS: start.S: fix and optimize instructions
Fix 32 vs 64 bit load/store instructions. Access CP0_WATCHHI as
32 Bit register. Use 64 Bit register access for clearing gd_data
and copying U-Boot.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/cpu/start.S | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/arch/mips/cpu/start.S b/arch/mips/cpu/start.S index 2aa2dcbac16..d2c31ae7816 100644 --- a/arch/mips/cpu/start.S +++ b/arch/mips/cpu/start.S @@ -115,7 +115,7 @@ reset: /* Clear watch registers */ MTC0 zero, CP0_WATCHLO - MTC0 zero, CP0_WATCHHI + mtc0 zero, CP0_WATCHHI /* WP(Watch Pending), SW0/1 should be cleared */ mtc0 zero, CP0_CAUSE @@ -161,14 +161,14 @@ reset: #endif /* Set up temporary stack */ - PTR_LI t0, -16 + li t0, -16 PTR_LI t1, CONFIG_SYS_INIT_SP_ADDR and sp, t1, t0 # force 16 byte alignment PTR_SUB sp, sp, GD_SIZE # reserve space for gd and sp, sp, t0 # force 16 byte alignment move k0, sp # save gd pointer #ifdef CONFIG_SYS_MALLOC_F_LEN - PTR_LI t2, CONFIG_SYS_MALLOC_F_LEN + li t2, CONFIG_SYS_MALLOC_F_LEN PTR_SUB sp, sp, t2 # reserve space for early malloc and sp, sp, t0 # force 16 byte alignment #endif @@ -177,14 +177,14 @@ reset: /* Clear gd */ move t0, k0 1: - sw zero, 0(t0) + PTR_S zero, 0(t0) blt t0, t1, 1b - PTR_ADDI t0, 4 + PTR_ADDI t0, PTRSIZE #ifdef CONFIG_SYS_MALLOC_F_LEN - PTR_ADDU t0, k0, GD_MALLOC_BASE # gd->malloc_base offset - sw sp, 0(t0) + PTR_S sp, GD_MALLOC_BASE(k0) # gd->malloc_base offset #endif + move a0, zero # a0 <-- boot_flags = 0 PTR_LA t9, board_init_f jr t9 @@ -224,11 +224,11 @@ ENTRY(relocate_code) * t2 = source end address */ 1: - lw t3, 0(t0) - sw t3, 0(t1) - PTR_ADDU t0, 4 + PTR_L t3, 0(t0) + PTR_S t3, 0(t1) + PTR_ADDU t0, PTRSIZE blt t0, t2, 1b - PTR_ADDU t1, 4 + PTR_ADDU t1, PTRSIZE /* If caches were enabled, we would have to flush them here. */ PTR_SUB a1, t1, s2 # a1 <-- size |