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1/*
2 * arch/arm/include/debug/ks8695.S
3 *
4 * Copyright (C) 2006 Ben Dooks <ben@simtec.co.uk>
5 * Copyright (C) 2006 Simtec Electronics
6 *
7 * KS8695 - Debug macros
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14#define KS8695_UART_PA 0x03ffe000
15#define KS8695_UART_VA 0xf00fe000
16#define KS8695_URTH (0x04)
17#define KS8695_URLS (0x14)
18#define URLS_URTE (1 << 6)
19#define URLS_URTHRE (1 << 5)
20
21 .macro addruart, rp, rv, tmp
22 ldr \rp, =KS8695_UART_PA @ physical base address
23 ldr \rv, =KS8695_UART_VA @ virtual base address
24 .endm
25
26 .macro senduart, rd, rx
27 str \rd, [\rx, #KS8695_URTH] @ Write to Transmit Holding Register
28 .endm
29
30 .macro busyuart, rd, rx
311001: ldr \rd, [\rx, #KS8695_URLS] @ Read Line Status Register
32 tst \rd, #URLS_URTE @ Holding & Shift registers empty?
33 beq 1001b
34 .endm
35
36 .macro waituart, rd, rx
371001: ldr \rd, [\rx, #KS8695_URLS] @ Read Line Status Register
38 tst \rd, #URLS_URTHRE @ Holding Register empty?
39 beq 1001b
40 .endm