| /* 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 |
