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 41