/* * 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. * */ #define UART_DATA 0 #define UART_FLAG 0x18 #define UART_FLAG_BUSY (1 << 3) .macro addruart, rp, rv, tmp ldr \rp, =[31mCONFIG_DEBUG_UART_PHYS[0m ldr \rv, =[31mCONFIG_DEBUG_UART_VIRT[0m .endm .macro senduart,rd,rx str \rd, [\rx, #UART_DATA] .endm .macro busyuart,rd,rx 1002: ldr \rd, [\rx, #UART_FLAG] tst \rd, #UART_FLAG_BUSY bne 1002b .endm .macro waituart,rd,rx 1001: ldr \rd, [\rx, #UART_FLAG] tst \rd, #UART_FLAG_BUSY bne 1001b .endm |