| 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 |
|---|
| 23 | 1001: 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 |
|---|
| 32 | 1001: 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 | |
|---|
| 37 | |
|---|
