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| /* SPDX-License-Identifier: GPL-2.0-only */
| /*
| * Broadcom BCM63xx low-level UART debug
| *
| * Copyright (C) 2014 Broadcom Corporation
| */
|
| #include <linux/serial_bcm63xx.h>
|
| .macro addruart, rp, rv, tmp
| ldr \rp, =CONFIG_DEBUG_UART_PHYS
| ldr \rv, =CONFIG_DEBUG_UART_VIRT
| .endm
|
| .macro senduart, rd, rx
| /* word access do not work */
| strb \rd, [\rx, #UART_FIFO_REG]
| .endm
|
| .macro waituarttxrdy, rd, rx
| 1001: ldr \rd, [\rx, #UART_IR_REG]
| tst \rd, #(1 << UART_IR_TXEMPTY)
| beq 1001b
| .endm
|
| .macro waituartcts, rd, rx
| .endm
|
| .macro busyuart, rd, rx
| 1002: ldr \rd, [\rx, #UART_IR_REG]
| tst \rd, #(1 << UART_IR_TXTRESH)
| beq 1002b
| .endm
|
|
