diff options
Diffstat (limited to 'arch/arm/lib/delay.S')
| -rw-r--r-- | arch/arm/lib/delay.S | 58 |
1 files changed, 0 insertions, 58 deletions
diff --git a/arch/arm/lib/delay.S b/arch/arm/lib/delay.S deleted file mode 100644 index 3c7f7e675dd..00000000000 --- a/arch/arm/lib/delay.S +++ /dev/null @@ -1,58 +0,0 @@ -/* - * linux/arch/arm/lib/delay.S - * - * Copyright (C) 1995, 1996 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include <linux/linkage.h> -#include <asm/assembler.h> - .text - -LC0: .word loops_per_jiffy - -/* - * 0 <= r0 <= 2000 - */ -ENTRY(__udelay) - mov r2, #0x6800 - orr r2, r2, #0x00db - mul r0, r2, r0 -ENTRY(__const_udelay) @ 0 <= r0 <= 0x01ffffff - ldr r2, LC0 - ldr r2, [r2] @ max = 0x0fffffff - mov r0, r0, lsr #11 @ max = 0x00003fff - mov r2, r2, lsr #11 @ max = 0x0003ffff - mul r0, r2, r0 @ max = 2^32-1 - movs r0, r0, lsr #6 - RETINSTR(moveq,pc,lr) - -/* - * loops = (r0 * 0x10c6 * 100 * loops_per_jiffy) / 2^32 - * - * Oh, if only we had a cycle counter... - */ - -@ Delay routine -ENTRY(__delay) - subs r0, r0, #1 -#if 0 - RETINSTR(movls,pc,lr) - subs r0, r0, #1 - RETINSTR(movls,pc,lr) - subs r0, r0, #1 - RETINSTR(movls,pc,lr) - subs r0, r0, #1 - RETINSTR(movls,pc,lr) - subs r0, r0, #1 - RETINSTR(movls,pc,lr) - subs r0, r0, #1 - RETINSTR(movls,pc,lr) - subs r0, r0, #1 - RETINSTR(movls,pc,lr) - subs r0, r0, #1 -#endif - bhi __delay - RETINSTR(mov,pc,lr) |