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sh_arch.cpp revision 1.9.16.3 
      1 /*	$NetBSD: sh_arch.cpp,v 1.9.16.3 2004/09/18 14:34:46 skrll Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001, 2002, 2004 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 #include <hpcboot.h>
     40 #include <hpcmenu.h>
     41 #include <sh3/sh_arch.h>
     42 
     43 SH_BOOT_FUNC_(7707);
     44 SH_BOOT_FUNC_(7709);
     45 SH_BOOT_FUNC_(7709A);
     46 SH_BOOT_FUNC_(7750);
     47 
     48 static int _cpu_type;
     49 
     50 int
     51 SHArchitecture::cpu_type()
     52 {
     53 	if (_cpu_type == 0) {
     54 #if _WIN32_WCE == 101
     55 		_cpu_type = 3;
     56 #else
     57 		SYSTEM_INFO si;
     58 		GetSystemInfo(&si);
     59 		_cpu_type = si.wProcessorLevel;
     60 #endif
     61 	}
     62 
     63 	return _cpu_type;
     64 }
     65 
     66 BOOL
     67 SHArchitecture::init()
     68 {
     69 
     70 	if (!_mem->init()) {
     71 		DPRINTF((TEXT("can't initialize memory manager.\n")));
     72 		return FALSE;
     73 	}
     74 	// D-RAM information
     75 	DPRINTF((TEXT("Memory Bank:\n")));
     76 
     77 	return TRUE;
     78 }
     79 
     80 void
     81 SHArchitecture::systemInfo()
     82 {
     83 
     84 	// Windows CE common infomation.
     85 	super::systemInfo();
     86 
     87 	// CPU specific.
     88 	_dev->dump(HPC_MENU._cons_parameter);
     89 }
     90 
     91 BOOL
     92 SHArchitecture::setupLoader()
     93 {
     94 	vaddr_t v;
     95 
     96 	if (!_mem->getPage(v , _loader_addr)) {
     97 		DPRINTF((TEXT("can't get page for 2nd loader.\n")));
     98 		return FALSE;
     99 	}
    100 	_loader_addr = ptokv(_loader_addr);
    101 
    102 	DPRINTF((TEXT("2nd bootloader address U0: 0x%08x P1: 0x%08x\n"),
    103 	    (unsigned)v,(unsigned)_loader_addr));
    104 
    105 	memcpy(LPVOID(v), LPVOID(_boot_func), _mem->getPageSize());
    106 
    107 	return TRUE;
    108 }
    109 
    110 void
    111 SHArchitecture::jump(paddr_t info, paddr_t pvec)
    112 {
    113 	kaddr_t sp;
    114 	vaddr_t v;
    115 	paddr_t p;
    116 
    117 	// stack for bootloader
    118 	_mem->getPage(v, p);
    119 	sp = ptokv(p + _mem->getPageSize() / 2);
    120 
    121 	info = ptokv(info);
    122 	pvec = ptokv(pvec);
    123 
    124 	DPRINTF((TEXT("boot arg: 0x%08x stack: 0x%08x\nBooting kernel...\n"),
    125 	    info, sp));
    126 
    127 	// Change to privilege-mode.
    128 	SetKMode(1);
    129 
    130 	// Cache flush(for 2nd bootloader)
    131 	//
    132 	// SH4 uses WinCE CacheSync(). this routine may causes TLB
    133 	// exception. so calls before suspendIntr().
    134 	//
    135 	cache_flush();
    136 
    137 	// Disable external interrupt.
    138 	suspendIntr();
    139 
    140 	// jump to 2nd loader.(run P1) at this time I still use MMU.
    141 	__asm(
    142 	    "mov	r6, r15\n"
    143 	    "jmp	@r7\n"
    144 	    "nop	\n", info, pvec, sp, _loader_addr);
    145 	// NOTREACHED
    146 }
    147 
    148 // disable external interrupt and save its priority.
    149 u_int32_t
    150 suspendIntr()
    151 {
    152 	u_int32_t sr;
    153 
    154 	__asm(
    155 	    "stc	sr, r0\n"
    156 	    "mov.l	r0, @r4\n"
    157 	    "or		r5, r0\n"
    158 	    "ldc	r0, sr\n", &sr, 0x000000f0);
    159 	return sr & 0x000000f0;
    160 }
    161 
    162 // resume external interrupt priority.
    163 void
    164 resumeIntr(u_int32_t s)
    165 {
    166 
    167 	__asm(
    168 	    "stc	sr, r0\n"
    169 	    "and	r5, r0\n"
    170 	    "or		r4, r0\n"
    171 	    "ldc	r0, sr\n", s, 0xffffff0f);
    172 }
    173