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- /* arch/arm/mach-lh7a40x/include/mach/debug-macro.S
- *
- * Debugging macro include header
- *
- * Copyright (C) 1994-1999 Russell King
- * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- */
- @ It is not known if this will be appropriate for every 40x
- @ board.
- .macro addruart,rx
- mrc p15, 0, \rx, c1, c0
- tst \rx, #1 @ MMU enabled?
- mov \rx, #0x00000700 @ offset from base
- orreq \rx, \rx, #0x80000000 @ physical base
- orrne \rx, \rx, #0xf8000000 @ virtual base
- .endm
- .macro senduart,rd,rx
- strb \rd, [\rx] @ DATA
- .endm
- .macro busyuart,rd,rx @ spin while busy
- 1001: ldr \rd, [\rx, #0x10] @ STATUS
- tst \rd, #1 << 3 @ BUSY (TX FIFO not empty)
- bne 1001b @ yes, spin
- .endm
- .macro waituart,rd,rx @ wait for Tx FIFO room
- 1001: ldrb \rd, [\rx, #0x10] @ STATUS
- tst \rd, #1 << 5 @ TXFF (TX FIFO full)
- bne 1001b @ yes, spin
- .endm
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