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[linux-2.6.git] / include / asm-arm / arch-at91rm9200 / debug-macro.S
1 /*
2  * include/asm-arm/arch-at91rm9200/debug-macro.S
3  *
4  *  Copyright (C) 2003-2005 SAN People
5  *
6  * Debugging macro include header
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 as
10  * published by the Free Software Foundation.
11  *
12 */
13
14 #include <asm/hardware.h>
15
16         .macro  addruart,rx
17         mrc     p15, 0, \rx, c1, c0
18         tst     \rx, #1                         @ MMU enabled?
19         ldreq   \rx, =AT91_BASE_SYS             @ System peripherals (phys address)
20         ldrne   \rx, =AT91_VA_BASE_SYS          @ System peripherals (virt address)
21         .endm
22
23         .macro  senduart,rd,rx
24         strb    \rd, [\rx, #AT91_DBGU_THR]      @ Write to Transmitter Holding Register
25         .endm
26
27         .macro  waituart,rd,rx
28 1001:   ldr     \rd, [\rx, #AT91_DBGU_SR]       @ Read Status Register
29         tst     \rd, #AT91_DBGU_TXRDY           @ DBGU_TXRDY = 1 when ready to transmit
30         beq     1001b
31         .endm
32
33         .macro  busyuart,rd,rx
34 1001:   ldr     \rd, [\rx, #AT91_DBGU_SR]       @ Read Status Register
35         tst     \rd, #AT91_DBGU_TXEMPTY         @ DBGU_TXEMPTY = 1 when transmission complete
36         beq     1001b
37         .endm
38