1 /* -*-C++-*- $NetBSD: arm_console.h,v 1.1 2001/02/09 18:34:54 uch Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by UCHIYAMA Yasushi. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _HPCBOOT_ARM_CONSOLE_H_ 40 #define _HPCBOOT_ARM_CONSOLE_H_ 41 42 #include <hpcboot.h> 43 #include <console.h> 44 #include <memory.h> 45 46 class ARMConsole : public SerialConsole { 47 private: 48 static ARMConsole *_instance; 49 50 MemoryManager *&_mem; 51 vaddr_t _uart_base; 52 vaddr_t _uart_busy, _uart_transmit; 53 54 private: 55 ARMConsole(MemoryManager *& mem) : _mem(mem) { /* NO-OP */ } 56 57 virtual ~ARMConsole() { 58 _mem->unmapPhysicalPage(_uart_base); 59 } 60 61 void __tx_busy(void) { 62 u_int8_t reg; 63 do 64 reg = VOLATILE_REF8(_uart_busy); 65 while ((reg & 0x1) == 0x1 ||(reg & 0x4) == 0); 66 } 67 68 void __putc(const char s) { 69 __tx_busy(); // wait until previous transmit done. 70 VOLATILE_REF8(_uart_transmit) = static_cast <u_int8_t>(0xff & s); 71 } 72 73 public: 74 static ARMConsole *Instance(MemoryManager *&); 75 static void Destroy(void); 76 virtual BOOL init(void); 77 virtual void print(const TCHAR *fmt, ...); 78 }; 79 #endif //_HPCBOOT_ARM_CONSOLE_H_ 80