Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/* arch/arm/include/debug/pl01x.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#include <linux/amba/serial.h>
14
15#ifdef CONFIG_DEBUG_UART_PHYS
16 .macro addruart, rp, rv, tmp
17 ldr \rp, =CONFIG_DEBUG_UART_PHYS
18 ldr \rv, =CONFIG_DEBUG_UART_VIRT
19 .endm
20#endif
21
22 .macro senduart,rd,rx
23 strb \rd, [\rx, #UART01x_DR]
24 .endm
25
26 .macro waituart,rd,rx
271001: ldr \rd, [\rx, #UART01x_FR]
28 ARM_BE8( rev \rd, \rd )
29 tst \rd, #UART01x_FR_TXFF
30 bne 1001b
31 .endm
32
33 .macro busyuart,rd,rx
341001: ldr \rd, [\rx, #UART01x_FR]
35 ARM_BE8( rev \rd, \rd )
36 tst \rd, #UART01x_FR_BUSY
37 bne 1001b
38 .endm