639da5ee37
Some platforms (like OMAP not to name it) are doing rather complicated hacks just to determine the base UART address to use. Let's give their addruart macro some slack by providing an extra work register which will allow for much needed cleanups. This is basically a no-op as this commit is only adding the extra argument to the macro but no one is using it yet. Signed-off-by: nicolas Pitre <nicolas.pitre@linaro.org> Reviewed-by: Kevin Hilman <khilman@ti.com>
57 lines
1.2 KiB
ArmAsm
57 lines
1.2 KiB
ArmAsm
/* arch/arm/mach-footbridge/include/mach/debug-macro.S
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*
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* Debugging macro include header
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*
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* Copyright (C) 1994-1999 Russell King
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* Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <asm/hardware/dec21285.h>
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#ifndef CONFIG_DEBUG_DC21285_PORT
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/* For NetWinder debugging */
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.macro addruart, rp, rv, tmp
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mov \rp, #0x000003f8
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orr \rv, \rp, #0xff000000 @ virtual
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orr \rp, \rp, #0x7c000000 @ physical
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.endm
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#define UART_SHIFT 0
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#define FLOW_CONTROL
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#include <asm/hardware/debug-8250.S>
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#else
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#include <mach/hardware.h>
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/* For EBSA285 debugging */
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.equ dc21285_high, ARMCSR_BASE & 0xff000000
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.equ dc21285_low, ARMCSR_BASE & 0x00ffffff
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.macro addruart, rp, rv, tmp
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.if dc21285_low
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mov \rp, #dc21285_low
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.else
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mov \rp, #0
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.endif
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orr \rv, \rp, #dc21285_high
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orr \rp, \rp, #0x42000000
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.endm
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.macro senduart,rd,rx
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str \rd, [\rx, #0x160] @ UARTDR
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.endm
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.macro busyuart,rd,rx
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1001: ldr \rd, [\rx, #0x178] @ UARTFLG
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tst \rd, #1 << 3
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bne 1001b
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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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