diff options
Diffstat (limited to 'arch/arm26/lib/io-acorn.S')
-rw-r--r-- | arch/arm26/lib/io-acorn.S | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/arch/arm26/lib/io-acorn.S b/arch/arm26/lib/io-acorn.S new file mode 100644 index 000000000000..f6c3e30b1b4f --- /dev/null +++ b/arch/arm26/lib/io-acorn.S @@ -0,0 +1,71 @@ +/* + * linux/arch/arm26/lib/io-acorn.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/config.h> /* for CONFIG_CPU_nn */ +#include <linux/linkage.h> +#include <asm/assembler.h> +#include <asm/hardware.h> + + .text + .align + + .equ diff_pcio_base, PCIO_BASE - IO_BASE + + .macro outw2 rd + mov r8, \rd, lsl #16 + orr r8, r8, r8, lsr #16 + str r8, [r3, r0, lsl #2] + mov r8, \rd, lsr #16 + orr r8, r8, r8, lsl #16 + str r8, [r3, r0, lsl #2] + .endm + + .macro inw2 rd, mask, temp + ldr \rd, [r0] + and \rd, \rd, \mask + ldr \temp, [r0] + orr \rd, \rd, \temp, lsl #16 + .endm + + .macro addr rd + tst \rd, #0x80000000 + mov \rd, \rd, lsl #2 + add \rd, \rd, #IO_BASE + addeq \rd, \rd, #diff_pcio_base + .endm + +.iosl_warning: + .ascii "<4>insl/outsl not implemented, called from %08lX\0" + .align + +/* + * These make no sense on Acorn machines. + * Print a warning message. + */ +ENTRY(insl) +ENTRY(outsl) + adr r0, .iosl_warning + mov r1, lr + b printk + +@ Purpose: write a memc register +@ Proto : void memc_write(int register, int value); +@ Returns: nothing + +ENTRY(memc_write) + cmp r0, #7 + RETINSTR(movgt,pc,lr) + mov r0, r0, lsl #17 + mov r1, r1, lsl #15 + mov r1, r1, lsr #17 + orr r0, r0, r1, lsl #2 + add r0, r0, #0x03600000 + strb r0, [r0] + RETINSTR(mov,pc,lr) + |