1 /* -*-C++-*- $NetBSD: arm_pxa2x0_console.h,v 1.1 2008/03/08 02:26:03 rafal Exp $ */ 2 3 /*- 4 * Copyright (c) 2008 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Rafal K. Boni. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _HPCBOOT_ARM_PXA2X0_CONSOLE_H_ 33 #define _HPCBOOT_ARM_PXA2X0_CONSOLE_H_ 34 35 #include <hpcboot.h> 36 #include <memory.h> 37 #include <arm/arm_console.h> 38 39 class PXA2x0Console : public ARMConsole { 40 friend class ARMConsole; 41 42 private: 43 MemoryManager *&_mem; 44 vaddr_t _uart_base; 45 46 private: PXA2x0Console(MemoryManager * & mem)47 PXA2x0Console(MemoryManager *& mem) : _mem(mem), _uart_base(~0) { } ~PXA2x0Console()48 virtual ~PXA2x0Console() { 49 if (_uart_base != ~0) 50 _mem->unmapPhysicalPage(_uart_base); 51 } 52 __tx_busy(void)53 void __tx_busy(void) { 54 uint8_t reg; 55 do 56 reg = VOLATILE_REF8(_uart_base + 0x14); 57 while (!(reg & 0x20)); 58 } 59 __clr_intr(void)60 void __clr_intr(void) { 61 uint8_t reg = VOLATILE_REF8(_uart_base + 0x08); 62 } 63 __putc(const char s)64 virtual void __putc(const char s) { 65 __tx_busy(); // wait until previous transmit done. 66 VOLATILE_REF8(_uart_base + 0x00) = 67 static_cast <uint8_t>(0xff & s); 68 __tx_busy(); // wait until this transmit done. 69 __clr_intr(); // clear interrupt register 70 } 71 72 public: init(void)73 virtual BOOL init(void) { 74 if (!SerialConsole::init()) 75 return FALSE; 76 77 _uart_base = 78 _mem->mapPhysicalPage(0x40100000, 0x100, PAGE_READWRITE); 79 80 if (_uart_base == ~0) 81 return FALSE; 82 83 return TRUE; 84 } 85 }; 86 #endif //_HPCBOOT_ARM_PXA2X0_CONSOLE_H_ 87