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1da177e4 LT |
1 | /* linux/include/asm-arm/arch-lh7a40x/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 | @ It is not known if this will be appropriate for every 40x | |
15 | @ board. | |
16 | ||
17 | .macro addruart,rx | |
18 | mrc p15, 0, \rx, c1, c0 | |
19 | tst \rx, #1 @ MMU enabled? | |
20 | mov \rx, #0x00000700 @ offset from base | |
21 | orreq \rx, \rx, #0x80000000 @ physical base | |
22 | orrne \rx, \rx, #0xf8000000 @ virtual base | |
23 | .endm | |
24 | ||
25 | .macro senduart,rd,rx | |
26 | strb \rd, [\rx] @ DATA | |
27 | .endm | |
28 | ||
29 | .macro busyuart,rd,rx @ spin while busy | |
30 | 1001: ldr \rd, [\rx, #0x10] @ STATUS | |
31 | tst \rd, #1 << 3 @ BUSY (TX FIFO not empty) | |
32 | bne 1001b @ yes, spin | |
33 | .endm | |
34 | ||
35 | .macro waituart,rd,rx @ wait for Tx FIFO room | |
36 | 1001: ldrb \rd, [\rx, #0x10] @ STATUS | |
37 | tst \rd, #1 << 5 @ TXFF (TX FIFO full) | |
38 | bne 1001b @ yes, spin | |
39 | .endm |