linux/arch/arm/mach-netx/include/mach/debug-macro.S
Nicolas Pitre 639da5ee37 ARM: add an extra temp register to the low level debugging addruart macro
Some platforms (like OMAP not to name it) are doing rather complicated
hacks just to determine the base UART address to use.  Let's give their
addruart macro some slack by providing an extra work register which will
allow for much needed cleanups.

This is basically a no-op as this commit is only adding the extra argument
to the macro but no one is using it yet.

Signed-off-by: nicolas Pitre <nicolas.pitre@linaro.org>
Reviewed-by: Kevin Hilman <khilman@ti.com>
2011-09-26 10:11:25 -04:00

37 lines
800 B
ArmAsm

/* arch/arm/mach-netx/include/mach/debug-macro.S
*
* Debugging macro include header
*
* Copyright (C) 1994-1999 Russell King
* Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
*
* 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 "hardware.h"
.macro addruart, rp, rv, tmp
mov \rp, #0x00000a00
orr \rv, \rp, #io_p2v(0x00100000) @ virtual
orr \rp, \rp, #0x00100000 @ physical
.endm
.macro senduart,rd,rx
str \rd, [\rx, #0]
.endm
.macro busyuart,rd,rx
1002: ldr \rd, [\rx, #0x18]
tst \rd, #(1 << 3)
bne 1002b
.endm
.macro waituart,rd,rx
1001: ldr \rd, [\rx, #0x18]
tst \rd, #(1 << 3)
bne 1001b
.endm