/* * arch/arm/include/asm/hardware/debug-8250.S * * Copyright (C) 1994-1999 Russell King * * 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. */ #include <linux/serial_reg.h> .macro senduart,rd,rx strb \rd, [\rx, #UART_TX << UART_SHIFT] .endm .macro busyuart,rd,rx 1002: ldrb \rd, [\rx, #UART_LSR << UART_SHIFT] and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE teq \rd, #UART_LSR_TEMT | UART_LSR_THRE bne 1002b .endm .macro waituart,rd,rx #ifdef FLOW_CONTROL 1001: ldrb \rd, [\rx, #UART_MSR << UART_SHIFT] tst \rd, #UART_MSR_CTS beq 1001b #endif .endm