mirror of https://gitee.com/openkylin/linux.git
33 lines
712 B
ArmAsm
33 lines
712 B
ArmAsm
/*
|
|
* Copyright (C) 1994-1999 Russell King
|
|
* Copyright (C) 2008-2009 Telechips
|
|
* Copyright (C) 2009 Hans J. Koch <hjk@linutronix.de>
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
.macro addruart, rp, rv
|
|
moveq \rp, #0x90000000 @ physical base address
|
|
movne \rv, #0xF1000000 @ virtual base
|
|
orr \rp, \rp, #0x00007000 @ UART0
|
|
orr \rv, \rv, #0x00007000 @ UART0
|
|
.endm
|
|
|
|
.macro senduart,rd,rx
|
|
strb \rd, [\rx, #0x44]
|
|
.endm
|
|
|
|
.macro waituart,rd,rx
|
|
.endm
|
|
|
|
.macro busyuart,rd,rx
|
|
1001:
|
|
ldr \rd, [\rx, #0x14]
|
|
tst \rd, #0x20
|
|
|
|
beq 1001b
|
|
.endm
|