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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2003-2005 SAN People
4 *
5 * Debugging macro include header
6*/
7
8#define AT91_DBGU_SR (0x14) /* Status Register */
9#define AT91_DBGU_THR (0x1c) /* Transmitter Holding Register */
10#define AT91_DBGU_TXRDY (1 << 1) /* Transmitter Ready */
11#define AT91_DBGU_TXEMPTY (1 << 9) /* Transmitter Empty */
12
13 .macro addruart, rp, rv, tmp
14 ldr \rp, =CONFIG_DEBUG_UART_PHYS @ System peripherals (phys address)
15 ldr \rv, =CONFIG_DEBUG_UART_VIRT @ System peripherals (virt address)
16 .endm
17
18 .macro senduart,rd,rx
19 strb \rd, [\rx, #(AT91_DBGU_THR)] @ Write to Transmitter Holding Register
20 .endm
21
22 .macro waituarttxrdy,rd,rx
231001: ldr \rd, [\rx, #(AT91_DBGU_SR)] @ Read Status Register
24 tst \rd, #AT91_DBGU_TXRDY @ DBGU_TXRDY = 1 when ready to transmit
25 beq 1001b
26 .endm
27
28 .macro waituartcts,rd,rx
29 .endm
30
31 .macro busyuart,rd,rx
321001: ldr \rd, [\rx, #(AT91_DBGU_SR)] @ Read Status Register
33 tst \rd, #AT91_DBGU_TXEMPTY @ DBGU_TXEMPTY = 1 when transmission complete
34 beq 1001b
35 .endm
36