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6339f6695f
Provides options to select one of the three "lowspeed" UARTs on MSM7k SoCs for DEBUG_LL output from the zImage decompressor and kernel. Signed-off-by: Brian Swetland <swetland@google.com> Signed-off-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
55 lines
1.2 KiB
ArmAsm
55 lines
1.2 KiB
ArmAsm
/* arch/arm/mach-msm7200/include/mach/debug-macro.S
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*
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* Copyright (C) 2007 Google, Inc.
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* Author: Brian Swetland <swetland@google.com>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <mach/hardware.h>
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#include <mach/msm_iomap.h>
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#ifdef CONFIG_MSM_DEBUG_UART
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.macro addruart,rx
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@ see if the MMU is enabled and select appropriate base address
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mrc p15, 0, \rx, c1, c0
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tst \rx, #1
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ldreq \rx, =MSM_DEBUG_UART_PHYS
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ldrne \rx, =MSM_DEBUG_UART_BASE
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.endm
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.macro senduart,rd,rx
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teq \rx, #0
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strne \rd, [\rx, #0x0C]
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.endm
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.macro waituart,rd,rx
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@ wait for TX_READY
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1001: ldr \rd, [\rx, #0x08]
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tst \rd, #0x04
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beq 1001b
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.endm
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#else
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.macro addruart,rx
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.endm
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.macro senduart,rd,rx
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.endm
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.macro waituart,rd,rx
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.endm
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#endif
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.macro busyuart,rd,rx
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.endm
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