diff options
Diffstat (limited to 'arch/arm/mach-actions/headsmp.S')
| -rw-r--r-- | arch/arm/mach-actions/headsmp.S | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/arm/mach-actions/headsmp.S b/arch/arm/mach-actions/headsmp.S new file mode 100644 index 000000000000..65f53bdb69e7 --- /dev/null +++ b/arch/arm/mach-actions/headsmp.S @@ -0,0 +1,52 @@ +/* + * Copyright 2012 Actions Semi Inc. + * Author: Actions Semi, Inc. + * + * Copyright (c) 2017 Andreas Färber + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/linkage.h> +#include <linux/init.h> + +ENTRY(owl_v7_invalidate_l1) + mov r0, #0 + mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache + mcr p15, 2, r0, c0, c0, 0 + mrc p15, 1, r0, c0, c0, 0 + + ldr r1, =0x7fff + and r2, r1, r0, lsr #13 + + ldr r1, =0x3ff + + and r3, r1, r0, lsr #3 @ NumWays - 1 + add r2, r2, #1 @ NumSets + + and r0, r0, #0x7 + add r0, r0, #4 @ SetShift + + clz r1, r3 @ WayShift + add r4, r3, #1 @ NumWays +1: sub r2, r2, #1 @ NumSets-- + mov r3, r4 @ Temp = NumWays +2: subs r3, r3, #1 @ Temp-- + mov r5, r3, lsl r1 + mov r6, r2, lsl r0 + orr r5, r5, r6 @ Reg = (Temp<<WayShift)|(NumSets<<SetShift) + mcr p15, 0, r5, c7, c6, 2 + bgt 2b + cmp r2, #0 + bgt 1b + dsb + isb + mov pc, lr +ENDPROC(owl_v7_invalidate_l1) + +ENTRY(owl_secondary_startup) + bl owl_v7_invalidate_l1 + b secondary_startup |