1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * Broadcom BCM63xx low-level UART debug 4 * 5 * Copyright (C) 2014 Broadcom Corporation 6 */ 7 8#include <linux/serial_bcm63xx.h> 9 10 .macro addruart, rp, rv, tmp 11 ldr \rp, =CONFIG_DEBUG_UART_PHYS 12 ldr \rv, =CONFIG_DEBUG_UART_VIRT 13 .endm 14 15 .macro senduart, rd, rx 16 /* word access do not work */ 17 strb \rd, [\rx, #UART_FIFO_REG] 18 .endm 19 20 .macro waituart, rd, rx 211001: ldr \rd, [\rx, #UART_IR_REG] 22 tst \rd, #(1 << UART_IR_TXEMPTY) 23 beq 1001b 24 .endm 25 26 .macro busyuart, rd, rx 271002: ldr \rd, [\rx, #UART_IR_REG] 28 tst \rd, #(1 << UART_IR_TXTRESH) 29 beq 1002b 30 .endm 31