| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * Copyright (C) 2003-2005 SAN People |
| * |
| * Debugging macro include header |
| */ |
| |
| #define AT91_DBGU_SR (0x14) /* Status Register */ |
| #define AT91_DBGU_THR (0x1c) /* Transmitter Holding Register */ |
| #define AT91_DBGU_TXRDY (1 << 1) /* Transmitter Ready */ |
| #define AT91_DBGU_TXEMPTY (1 << 9) /* Transmitter Empty */ |
| |
| .macro addruart, rp, rv, tmp |
| ldr \rp, =CONFIG_DEBUG_UART_PHYS @ System peripherals (phys address) |
| ldr \rv, =CONFIG_DEBUG_UART_VIRT @ System peripherals (virt address) |
| .endm |
| |
| .macro senduart,rd,rx |
| strb \rd, [\rx, #(AT91_DBGU_THR)] @ Write to Transmitter Holding Register |
| .endm |
| |
| .macro waituart,rd,rx |
| 1001: ldr \rd, [\rx, #(AT91_DBGU_SR)] @ Read Status Register |
| tst \rd, #AT91_DBGU_TXRDY @ DBGU_TXRDY = 1 when ready to transmit |
| beq 1001b |
| .endm |
| |
| .macro busyuart,rd,rx |
| 1001: ldr \rd, [\rx, #(AT91_DBGU_SR)] @ Read Status Register |
| tst \rd, #AT91_DBGU_TXEMPTY @ DBGU_TXEMPTY = 1 when transmission complete |
| beq 1001b |
| .endm |
| |
