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36 lines
795 B
36 lines
795 B
/* |
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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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#define UART_DATA 0 |
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#define UART_FLAG 0x18 |
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#define UART_FLAG_BUSY (1 << 3) |
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.macro addruart, rp, rv, tmp |
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ldr \rp, =CONFIG_DEBUG_UART_PHYS |
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ldr \rv, =CONFIG_DEBUG_UART_VIRT |
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.endm |
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.macro senduart,rd,rx |
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str \rd, [\rx, #UART_DATA] |
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.endm |
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.macro busyuart,rd,rx |
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1002: ldr \rd, [\rx, #UART_FLAG] |
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tst \rd, #UART_FLAG_BUSY |
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bne 1002b |
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.endm |
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.macro waituart,rd,rx |
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1001: ldr \rd, [\rx, #UART_FLAG] |
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tst \rd, #UART_FLAG_BUSY |
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bne 1001b |
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.endm
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