/* 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