tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* linux/include/asm-arm/arch-omap/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 .macro addruart,rx
15 mrc p15, 0, \rx, c1, c0
16 tst \rx, #1 @ MMU enabled?
17 moveq \rx, #0xff000000 @ physical base address
18 movne \rx, #0xfe000000 @ virtual base
19 orr \rx, \rx, #0x00fb0000
20#ifdef CONFIG_OMAP_LL_DEBUG_UART3
21 orr \rx, \rx, #0x00009000 @ UART 3
22#endif
23#if defined(CONFIG_OMAP_LL_DEBUG_UART2) || defined(CONFIG_OMAP_LL_DEBUG_UART3)
24 orr \rx, \rx, #0x00000800 @ UART 2 & 3
25#endif
26 .endm
27
28 .macro senduart,rd,rx
29 strb \rd, [\rx]
30 .endm
31
32 .macro busyuart,rd,rx
331001: ldrb \rd, [\rx, #(0x5 << 2)] @ OMAP-1510 and friends
34 and \rd, \rd, #0x60
35 teq \rd, #0x60
36 beq 1002f
37 ldrb \rd, [\rx, #(0x5 << 0)] @ OMAP-730 only
38 and \rd, \rd, #0x60
39 teq \rd, #0x60
40 bne 1001b
411002:
42 .endm
43
44 .macro waituart,rd,rx
45 .endm