aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-arm/arch-at91/debug-macro.S
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-arm/arch-at91/debug-macro.S')
-rw-r--r--include/asm-arm/arch-at91/debug-macro.S39
1 files changed, 39 insertions, 0 deletions
diff --git a/include/asm-arm/arch-at91/debug-macro.S b/include/asm-arm/arch-at91/debug-macro.S
new file mode 100644
index 000000000000..13e9f5e1d4ff
--- /dev/null
+++ b/include/asm-arm/arch-at91/debug-macro.S
@@ -0,0 +1,39 @@
1/*
2 * include/asm-arm/arch-at91/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#include <asm/arch/at91_dbgu.h>
16
17 .macro addruart,rx
18 mrc p15, 0, \rx, c1, c0
19 tst \rx, #1 @ MMU enabled?
20 ldreq \rx, =(AT91_BASE_SYS + AT91_DBGU) @ System peripherals (phys address)
21 ldrne \rx, =(AT91_VA_BASE_SYS + AT91_DBGU) @ System peripherals (virt address)
22 .endm
23
24 .macro senduart,rd,rx
25 strb \rd, [\rx, #(AT91_DBGU_THR - AT91_DBGU)] @ Write to Transmitter Holding Register
26 .endm
27
28 .macro waituart,rd,rx
291001: ldr \rd, [\rx, #(AT91_DBGU_SR - AT91_DBGU)] @ Read Status Register
30 tst \rd, #AT91_DBGU_TXRDY @ DBGU_TXRDY = 1 when ready to transmit
31 beq 1001b
32 .endm
33
34 .macro busyuart,rd,rx
351001: ldr \rd, [\rx, #(AT91_DBGU_SR - AT91_DBGU)] @ Read Status Register
36 tst \rd, #AT91_DBGU_TXEMPTY @ DBGU_TXEMPTY = 1 when transmission complete
37 beq 1001b
38 .endm
39