Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1/* linux/include/asm-arm/arch-ebsa285/debug-macro.S
2 *
3 * Debugging macro include header
4 *
5 * Copyright (C) 1994-1999 Russell King
6 * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
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/dec21285.h>
15
16#ifndef CONFIG_DEBUG_DC21285_PORT
17 /* For NetWinder debugging */
18 .macro addruart,rx
19 mrc p15, 0, \rx, c1, c0
20 tst \rx, #1 @ MMU enabled?
21 moveq \rx, #0x7c000000 @ physical
22 movne \rx, #0xff000000 @ virtual
23 orr \rx, \rx, #0x000003f8
24 .endm
25
26 .macro senduart,rd,rx
27 strb \rd, [\rx]
28 .endm
29
30 .macro busyuart,rd,rx
311002: ldrb \rd, [\rx, #0x5]
32 and \rd, \rd, #0x60
33 teq \rd, #0x60
34 bne 1002b
35 .endm
36
37 .macro waituart,rd,rx
381001: ldrb \rd, [\rx, #0x6]
39 tst \rd, #0x10
40 beq 1001b
41 .endm
42#else
43 /* For EBSA285 debugging */
44 .equ dc21285_high, ARMCSR_BASE & 0xff000000
45 .equ dc21285_low, ARMCSR_BASE & 0x00ffffff
46
47 .macro addruart,rx
48 mrc p15, 0, \rx, c1, c0
49 tst \rx, #1 @ MMU enabled?
50 moveq \rx, #0x42000000
51 movne \rx, #dc21285_high
52 .if dc21285_low
53 orrne \rx, \rx, #dc21285_low
54 .endif
55 .endm
56
57 .macro senduart,rd,rx
58 str \rd, [\rx, #0x160] @ UARTDR
59 .endm
60
61 .macro busyuart,rd,rx
621001: ldr \rd, [\rx, #0x178] @ UARTFLG
63 tst \rd, #1 << 3
64 bne 1001b
65 .endm
66
67 .macro waituart,rd,rx
68 .endm
69#endif