1/* 2 * Broadcom BCM63xx low-level UART debug 3 * 4 * Copyright (C) 2014 Broadcom Corporation 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10 11#include <linux/serial_bcm63xx.h> 12 13 .macro addruart, rp, rv, tmp 14 ldr \rp, =CONFIG_DEBUG_UART_PHYS 15 ldr \rv, =CONFIG_DEBUG_UART_VIRT 16 .endm 17 18 .macro senduart, rd, rx 19 /* word access do not work */ 20 strb \rd, [\rx, #UART_FIFO_REG] 21 .endm 22 23 .macro waituart, rd, rx 241001: ldr \rd, [\rx, #UART_IR_REG] 25 tst \rd, #(1 << UART_IR_TXEMPTY) 26 beq 1001b 27 .endm 28 29 .macro busyuart, rd, rx 301002: ldr \rd, [\rx, #UART_IR_REG] 31 tst \rd, #(1 << UART_IR_TXTRESH) 32 beq 1002b 33 .endm 34