1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
72 lines
1.4 KiB
ArmAsm
72 lines
1.4 KiB
ArmAsm
/*
|
|
* 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)
|
|
|