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73a59c1c | 1 | /* |
73a59c1c SP |
2 | * Copyright (C) 2003-2005 SAN People |
3 | * | |
4 | * Debugging macro include header | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | */ | |
11 | ||
5a5a6451 | 12 | #ifdef CONFIG_MMU |
5f58c970 | 13 | #define AT91_IO_P2V(x) ((x) - 0x01000000) |
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14 | #else |
15 | #define AT91_IO_P2V(x) (x) | |
16 | #endif | |
5f58c970 | 17 | |
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18 | #define CONFIG_DEBUG_UART_VIRT AT91_IO_P2V(CONFIG_DEBUG_UART_PHYS) |
19 | ||
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20 | #define AT91_DBGU_SR (0x14) /* Status Register */ |
21 | #define AT91_DBGU_THR (0x1c) /* Transmitter Holding Register */ | |
22 | #define AT91_DBGU_TXRDY (1 << 1) /* Transmitter Ready */ | |
23 | #define AT91_DBGU_TXEMPTY (1 << 9) /* Transmitter Empty */ | |
24 | ||
639da5ee | 25 | .macro addruart, rp, rv, tmp |
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26 | ldr \rp, =CONFIG_DEBUG_UART_PHYS @ System peripherals (phys address) |
27 | ldr \rv, =CONFIG_DEBUG_UART_VIRT @ System peripherals (virt address) | |
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28 | .endm |
29 | ||
30 | .macro senduart,rd,rx | |
1ff5b1b4 | 31 | strb \rd, [\rx, #(AT91_DBGU_THR)] @ Write to Transmitter Holding Register |
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32 | .endm |
33 | ||
34 | .macro waituart,rd,rx | |
1ff5b1b4 JCPV |
35 | 1001: ldr \rd, [\rx, #(AT91_DBGU_SR)] @ Read Status Register |
36 | tst \rd, #AT91_DBGU_TXRDY @ DBGU_TXRDY = 1 when ready to transmit | |
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37 | beq 1001b |
38 | .endm | |
39 | ||
40 | .macro busyuart,rd,rx | |
1ff5b1b4 JCPV |
41 | 1001: ldr \rd, [\rx, #(AT91_DBGU_SR)] @ Read Status Register |
42 | tst \rd, #AT91_DBGU_TXEMPTY @ DBGU_TXEMPTY = 1 when transmission complete | |
73a59c1c SP |
43 | beq 1001b |
44 | .endm | |
45 |