mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-22 17:01:14 +00:00
![Tony Lindgren](/assets/img/avatar_default.png)
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>
54 lines
1.2 KiB
ArmAsm
54 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
|