| /* linux/include/asm-arm/arch-lh7a40x/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 |
