kernel_optimize_test/arch/arm/mach-netx/include/mach/debug-macro.S
Tony Lindgren 4e6d488af3 ARM: 5910/1: ARM: Add tmp register for addruart and loadsp
Otherwise more complicated uart configuration won't be possible.
We can use r1 for tmp register for both head.S and debug.S.

NOTE: This patch depends on another patch to add the the tmp register
into all debug-macro.S files. That can be done with:

$ sed -i -e "s/addruart,rx|addruart, rx/addruart, rx, tmp/"
	arch/arm/*/include/*/debug-macro.S

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-12 17:27:52 +00:00

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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, rx, tmp
mrc p15, 0, \rx, c1, c0
tst \rx, #1 @ MMU enabled?
moveq \rx, #0x00100000 @ physical
movne \rx, #io_p2v(0x00100000) @ virtual
orr \rx, \rx, #0x00000a00
.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