mips_arch.cpp revision 1.1.2.2
1 1.1.2.2 bouyer /* -*-C++-*- $NetBSD: mips_arch.cpp,v 1.1.2.2 2001/02/11 19:10:06 bouyer Exp $ */ 2 1.1.2.2 bouyer 3 1.1.2.2 bouyer /*- 4 1.1.2.2 bouyer * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 1.1.2.2 bouyer * All rights reserved. 6 1.1.2.2 bouyer * 7 1.1.2.2 bouyer * This code is derived from software contributed to The NetBSD Foundation 8 1.1.2.2 bouyer * by UCHIYAMA Yasushi. 9 1.1.2.2 bouyer * 10 1.1.2.2 bouyer * Redistribution and use in source and binary forms, with or without 11 1.1.2.2 bouyer * modification, are permitted provided that the following conditions 12 1.1.2.2 bouyer * are met: 13 1.1.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 14 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer. 15 1.1.2.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer in the 17 1.1.2.2 bouyer * documentation and/or other materials provided with the distribution. 18 1.1.2.2 bouyer * 3. All advertising materials mentioning features or use of this software 19 1.1.2.2 bouyer * must display the following acknowledgement: 20 1.1.2.2 bouyer * This product includes software developed by the NetBSD 21 1.1.2.2 bouyer * Foundation, Inc. and its contributors. 22 1.1.2.2 bouyer * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.1.2.2 bouyer * contributors may be used to endorse or promote products derived 24 1.1.2.2 bouyer * from this software without specific prior written permission. 25 1.1.2.2 bouyer * 26 1.1.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.1.2.2 bouyer * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.1.2.2 bouyer * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.1.2.2 bouyer * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.1.2.2 bouyer * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.1.2.2 bouyer * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.1.2.2 bouyer * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.1.2.2 bouyer * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.1.2.2 bouyer * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.1.2.2 bouyer * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.1.2.2 bouyer * POSSIBILITY OF SUCH DAMAGE. 37 1.1.2.2 bouyer */ 38 1.1.2.2 bouyer #undef DEBUG_KERNADDR_ACCESS 39 1.1.2.2 bouyer #undef DEBUG_CP0_ACCESS 40 1.1.2.2 bouyer 41 1.1.2.2 bouyer #include <hpcboot.h> 42 1.1.2.2 bouyer #include <mips/mips_arch.h> 43 1.1.2.2 bouyer #include <console.h> 44 1.1.2.2 bouyer #include <memory.h> 45 1.1.2.2 bouyer 46 1.1.2.2 bouyer MIPSArchitecture::MIPSArchitecture(Console *&cons, MemoryManager *&mem) 47 1.1.2.2 bouyer : Architecture(cons, mem) 48 1.1.2.2 bouyer { 49 1.1.2.2 bouyer /* NO-OP */ 50 1.1.2.2 bouyer } 51 1.1.2.2 bouyer 52 1.1.2.2 bouyer MIPSArchitecture::~MIPSArchitecture(void) 53 1.1.2.2 bouyer { 54 1.1.2.2 bouyer /* NO-OP */ 55 1.1.2.2 bouyer } 56 1.1.2.2 bouyer 57 1.1.2.2 bouyer void 58 1.1.2.2 bouyer MIPSArchitecture::systemInfo() 59 1.1.2.2 bouyer { 60 1.1.2.2 bouyer u_int32_t r0, r1; 61 1.1.2.2 bouyer Architecture::systemInfo(); 62 1.1.2.2 bouyer r0 = r1 = 0; 63 1.1.2.2 bouyer 64 1.1.2.2 bouyer #ifdef DEBUG_CP0_ACCESS 65 1.1.2.2 bouyer /* CP0 access test */ 66 1.1.2.2 bouyer _kmode = SetKMode(1); 67 1.1.2.2 bouyer 68 1.1.2.2 bouyer DPRINTF((TEXT("status register test\n"))); 69 1.1.2.2 bouyer GET_SR(r0); 70 1.1.2.2 bouyer DPRINTF((TEXT("current value: 0x%08x\n"), r0)); 71 1.1.2.2 bouyer SET_SR(r1); 72 1.1.2.2 bouyer GET_SR(r1); 73 1.1.2.2 bouyer DPRINTF((TEXT("write test: 0x%08x\n"), r1)); 74 1.1.2.2 bouyer SET_SR(r0); 75 1.1.2.2 bouyer 76 1.1.2.2 bouyer SetKMode(_kmode); 77 1.1.2.2 bouyer #endif // DEBUG_CP0_ACCESS 78 1.1.2.2 bouyer } 79 1.1.2.2 bouyer 80 1.1.2.2 bouyer BOOL 81 1.1.2.2 bouyer MIPSArchitecture::init() 82 1.1.2.2 bouyer { 83 1.1.2.2 bouyer if (!_mem->init()) { 84 1.1.2.2 bouyer DPRINTF((TEXT("can't initialize memory manager.\n"))); 85 1.1.2.2 bouyer return FALSE; 86 1.1.2.2 bouyer } 87 1.1.2.2 bouyer 88 1.1.2.2 bouyer return TRUE; 89 1.1.2.2 bouyer } 90 1.1.2.2 bouyer 91 1.1.2.2 bouyer BOOL 92 1.1.2.2 bouyer MIPSArchitecture::setupLoader() 93 1.1.2.2 bouyer { 94 1.1.2.2 bouyer vaddr_t v; 95 1.1.2.2 bouyer 96 1.1.2.2 bouyer #ifdef DEBUG_KERNADDR_ACCESS // kernel address access test 97 1.1.2.2 bouyer #define TEST_MAGIC 0xac1dcafe 98 1.1.2.2 bouyer paddr_t p; 99 1.1.2.2 bouyer u_int32_t r0; 100 1.1.2.2 bouyer 101 1.1.2.2 bouyer _kmode = SetKMode(1); 102 1.1.2.2 bouyer _mem->getPage(v, p); 103 1.1.2.2 bouyer VOLATILE_REF(ptokv(p)) = TEST_MAGIC; 104 1.1.2.2 bouyer cacheFlush(); 105 1.1.2.2 bouyer r0 = VOLATILE_REF(v); 106 1.1.2.2 bouyer DPRINTF((TEXT("kernel address access test: %S\n"), 107 1.1.2.2 bouyer r0 == TEST_MAGIC ? "OK" : "NG")); 108 1.1.2.2 bouyer SetKMode(_kmode); 109 1.1.2.2 bouyer #endif // DEBUG_KERNADDR_ACCESS 110 1.1.2.2 bouyer 111 1.1.2.2 bouyer if (!_mem->getPage(v , _loader_addr)) { 112 1.1.2.2 bouyer DPRINTF((TEXT("can't get page for 2nd loader.\n"))); 113 1.1.2.2 bouyer return FALSE; 114 1.1.2.2 bouyer } 115 1.1.2.2 bouyer DPRINTF((TEXT("2nd bootloader vaddr=0x%08x paddr=0x%08x\n"), 116 1.1.2.2 bouyer (unsigned)v,(unsigned)_loader_addr)); 117 1.1.2.2 bouyer 118 1.1.2.2 bouyer memcpy(LPVOID(v), LPVOID(_boot_func), _mem->getPageSize()); 119 1.1.2.2 bouyer DPRINTF((TEXT("2nd bootloader copy done.\n"))); 120 1.1.2.2 bouyer 121 1.1.2.2 bouyer return TRUE; 122 1.1.2.2 bouyer } 123 1.1.2.2 bouyer 124 1.1.2.2 bouyer void 125 1.1.2.2 bouyer MIPSArchitecture::jump(paddr_t info, paddr_t pvec) 126 1.1.2.2 bouyer { 127 1.1.2.2 bouyer kaddr_t sp; 128 1.1.2.2 bouyer vaddr_t v; 129 1.1.2.2 bouyer paddr_t p; 130 1.1.2.2 bouyer 131 1.1.2.2 bouyer // stack for bootloader(but mips loader don't use stack) 132 1.1.2.2 bouyer _mem->getPage(v, p); 133 1.1.2.2 bouyer sp = ptokv(p + _mem->getPageSize() - 0x10); 134 1.1.2.2 bouyer 135 1.1.2.2 bouyer info = ptokv(info); 136 1.1.2.2 bouyer pvec = ptokv(pvec); 137 1.1.2.2 bouyer _loader_addr = ptokv(_loader_addr); 138 1.1.2.2 bouyer 139 1.1.2.2 bouyer // switch kernel mode. 140 1.1.2.2 bouyer SetKMode(1); 141 1.1.2.2 bouyer if (SetKMode(1) != 1) { 142 1.1.2.2 bouyer DPRINTF((TEXT("SetKMode(1) failed.\n"))); 143 1.1.2.2 bouyer return; 144 1.1.2.2 bouyer } 145 1.1.2.2 bouyer DPRINTF((TEXT("jump to 0x%08x(info=0x%08x, pvec=0x%08x\n"), 146 1.1.2.2 bouyer _loader_addr, info, pvec)); 147 1.1.2.2 bouyer 148 1.1.2.2 bouyer // writeback whole D-cache and invalidate whole I-cache. 149 1.1.2.2 bouyer // 2nd boot-loader access data via kseg0 which were writed via kuseg, 150 1.1.2.2 bouyer cacheFlush(); 151 1.1.2.2 bouyer 152 1.1.2.2 bouyer // jump to 2nd-loader(run kseg0) 153 1.1.2.2 bouyer __asm(".set noreorder;" 154 1.1.2.2 bouyer "jr a3;" 155 1.1.2.2 bouyer "move sp, a2;" 156 1.1.2.2 bouyer ".set reorder", info, pvec, sp, _loader_addr); 157 1.1.2.2 bouyer // NOTREACHED 158 1.1.2.2 bouyer } 159
Indexes created Sun Sep 21 18:09:52 GMT 2025