2
0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-25 21:54:06 +08:00
linux-next/arch/arm/mach-msm/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

55 lines
1.2 KiB
ArmAsm

/* arch/arm/mach-msm7200/include/mach/debug-macro.S
*
* Copyright (C) 2007 Google, Inc.
* Author: Brian Swetland <swetland@google.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <mach/hardware.h>
#include <mach/msm_iomap.h>
#ifdef CONFIG_MSM_DEBUG_UART
.macro addruart, rx, tmp
@ see if the MMU is enabled and select appropriate base address
mrc p15, 0, \rx, c1, c0
tst \rx, #1
ldreq \rx, =MSM_DEBUG_UART_PHYS
ldrne \rx, =MSM_DEBUG_UART_BASE
.endm
.macro senduart,rd,rx
teq \rx, #0
strne \rd, [\rx, #0x0C]
.endm
.macro waituart,rd,rx
@ wait for TX_READY
1001: ldr \rd, [\rx, #0x08]
tst \rd, #0x04
beq 1001b
.endm
#else
.macro addruart, rx, tmp
.endm
.macro senduart,rd,rx
.endm
.macro waituart,rd,rx
.endm
#endif
.macro busyuart,rd,rx
.endm