1 /* arch/arm/mach-lh7a40x/include/mach/debug-macro.S
3 * Debugging macro include header
5 * Copyright (C) 1994-1999 Russell King
6 * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
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.
14 @ It is not known if this will be appropriate for every 40x
17 .macro addruart, rp, rv
18 mov \rp, #0x00000700 @ offset from base
19 orr \rv, \rp, #0xf8000000 @ virtual base
20 orr \rp, \rp, #0x80000000 @ physical base
24 strb \rd, [\rx] @ DATA
27 .macro busyuart,rd,rx @ spin while busy
28 1001: ldr \rd, [\rx, #0x10] @ STATUS
29 tst \rd, #1 << 3 @ BUSY (TX FIFO not empty)
33 .macro waituart,rd,rx @ wait for Tx FIFO room
34 1001: ldrb \rd, [\rx, #0x10] @ STATUS
35 tst \rd, #1 << 5 @ TXFF (TX FIFO full)