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linux/arch/arm/mach-msm/include/mach/debug-macro.S
Daniel Walker 06125ff051 msm: fix compile failure when no debug uart is selected
If the board has a debug uart the user is given a choice of which
uart to use. The user can also select NONE, which means not to use one.
In most of our header files when NONE is selected nothing is defined
for MSM_DEBUG_UART_PHYS or MSM_DEBUG_UART_BASE. This causes a compile
failure in debug-macro.S which expect something to be defined there.

Example of the failure,

arch/arm/kernel/built-in.o: In function `hexbuf':
linux-2.6/arch/arm/kernel/debug.S:186: undefined reference to `MSM_DEBUG_UART_PHYS'
linux-2.6/arch/arm/kernel/debug.S:186: undefined reference to `MSM_DEBUG_UART_BASE'

This fixes the compile failure by adding an ifdef to debug-macro.S
that removes all the debug uart code in the case of NONE.

Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
2010-10-29 15:56:16 -07:00

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>
#if defined(CONFIG_HAS_MSM_DEBUG_UART_PHYS) && !defined(CONFIG_MSM_DEBUG_UART_NONE)
.macro addruart, rp, rv
ldr \rp, =MSM_DEBUG_UART_PHYS
ldr \rv, =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, rp, rv
mov \rv, #0xff000000
orr \rv, \rv, #0x00f00000
.endm
.macro senduart,rd,rx
.endm
.macro waituart,rd,rx
.endm
#endif
.macro busyuart,rd,rx
.endm