4e6d488af3
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>
57 lines
1.3 KiB
ArmAsm
57 lines
1.3 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, rx, tmp
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mrc p15, 0, \rx, c1, c0
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tst \rx, #1 @ MMU enabled?
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moveq \rx, #0x7c000000 @ physical
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movne \rx, #0xff000000 @ virtual
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orr \rx, \rx, #0x000003f8
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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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/* 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, rx, tmp
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mrc p15, 0, \rx, c1, c0
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tst \rx, #1 @ MMU enabled?
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moveq \rx, #0x42000000
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movne \rx, #dc21285_high
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.if dc21285_low
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orrne \rx, \rx, #dc21285_low
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.endif
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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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