41 lines
1.1 KiB
ArmAsm
41 lines
1.1 KiB
ArmAsm
/* linux/include/asm-arm/arch-h720x/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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.equ io_virt, IO_BASE
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.equ io_phys, IO_START
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.macro addruart,rx
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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, #io_phys @ physical base address
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movne \rx, #io_virt @ virtual address
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add \rx, \rx, #0x00020000 @ UART1
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.endm
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.macro senduart,rd,rx
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str \rd, [\rx, #0x0] @ UARTDR
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.endm
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.macro waituart,rd,rx
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1001: ldr \rd, [\rx, #0x18] @ UARTFLG
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tst \rd, #1 << 5 @ UARTFLGUTXFF - 1 when full
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bne 1001b
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.endm
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.macro busyuart,rd,rx
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1001: ldr \rd, [\rx, #0x18] @ UARTFLG
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tst \rd, #1 << 3 @ UARTFLGUBUSY - 1 when busy
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bne 1001b
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.endm
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