1/* arch/arm/mach-lh7a40x/include/mach/debug-macro.S 2 * 3 * Debugging macro include header 4 * 5 * Copyright (C) 1994-1999 Russell King 6 * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 * 12*/ 13 14 @ It is not known if this will be appropriate for every 40x 15 @ board. 16 17 .macro addruart, rx, tmp 18 mrc p15, 0, \rx, c1, c0 19 tst \rx, #1 @ MMU enabled? 20 mov \rx, #0x00000700 @ offset from base 21 orreq \rx, \rx, #0x80000000 @ physical base 22 orrne \rx, \rx, #0xf8000000 @ virtual base 23 .endm 24 25 .macro senduart,rd,rx 26 strb \rd, [\rx] @ DATA 27 .endm 28 29 .macro busyuart,rd,rx @ spin while busy 301001: ldr \rd, [\rx, #0x10] @ STATUS 31 tst \rd, #1 << 3 @ BUSY (TX FIFO not empty) 32 bne 1001b @ yes, spin 33 .endm 34 35 .macro waituart,rd,rx @ wait for Tx FIFO room 361001: ldrb \rd, [\rx, #0x10] @ STATUS 37 tst \rd, #1 << 5 @ TXFF (TX FIFO full) 38 bne 1001b @ yes, spin 39 .endm 40