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73a59c1c | 1 | /* |
a09e64fb | 2 | * arch/arm/mach-at91/include/mach/debug-macro.S |
73a59c1c SP |
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 | ||
a09e64fb RK |
14 | #include <mach/hardware.h> |
15 | #include <mach/at91_dbgu.h> | |
73a59c1c | 16 | |
0ea12930 JK |
17 | .macro addruart, rp, rv |
18 | ldr \rp, =(AT91_BASE_SYS + AT91_DBGU) @ System peripherals (phys address) | |
19 | ldr \rv, =(AT91_VA_BASE_SYS + AT91_DBGU) @ System peripherals (virt address) | |
73a59c1c SP |
20 | .endm |
21 | ||
22 | .macro senduart,rd,rx | |
d0760b3b | 23 | strb \rd, [\rx, #(AT91_DBGU_THR - AT91_DBGU)] @ Write to Transmitter Holding Register |
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24 | .endm |
25 | ||
26 | .macro waituart,rd,rx | |
d0760b3b AV |
27 | 1001: ldr \rd, [\rx, #(AT91_DBGU_SR - AT91_DBGU)] @ Read Status Register |
28 | tst \rd, #AT91_DBGU_TXRDY @ DBGU_TXRDY = 1 when ready to transmit | |
73a59c1c SP |
29 | beq 1001b |
30 | .endm | |
31 | ||
32 | .macro busyuart,rd,rx | |
d0760b3b AV |
33 | 1001: ldr \rd, [\rx, #(AT91_DBGU_SR - AT91_DBGU)] @ Read Status Register |
34 | tst \rd, #AT91_DBGU_TXEMPTY @ DBGU_TXEMPTY = 1 when transmission complete | |
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35 | beq 1001b |
36 | .endm | |
37 |