| /* | |
| * Copyright (C) 2003-2005 SAN People | |
| * | |
| * Debugging macro include header | |
| * | |
| * This program is free software; you can redistribute it and/or modify | |
| * it under the terms of the GNU General Public License version 2 as | |
| * published by the Free Software Foundation. | |
| * | |
| */ | |
| #if defined(CONFIG_AT91_DEBUG_LL_DBGU0) | |
| #define AT91_DBGU 0xfffff200 /* AT91_BASE_DBGU0 */ | |
| #elif defined(CONFIG_AT91_DEBUG_LL_DBGU1) | |
| #define AT91_DBGU 0xffffee00 /* AT91_BASE_DBGU1 */ | |
| #else | |
| /* On sama5d4, use USART3 as low level serial console */ | |
| #define AT91_DBGU 0xfc00c000 /* SAMA5D4_BASE_USART3 */ | |
| #endif | |
| #ifdef CONFIG_MMU | |
| #define AT91_IO_P2V(x) ((x) - 0x01000000) | |
| #else | |
| #define AT91_IO_P2V(x) (x) | |
| #endif | |
| #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, =AT91_DBGU @ System peripherals (phys address) | |
| ldr \rv, =AT91_IO_P2V(AT91_DBGU) @ 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 | |