1/* $NetBSD: amiga_init.c,v 1.8 2009/07/21 09:49:15 phx Exp $ */ 2 3/* 4 * Copyright (c) 1994 Michael L. Hitch 5 * Copyright (c) 1993 Markus Wild 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Markus Wild. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34#include <sys/cdefs.h> 35__KERNEL_RCSID(0, "$NetBSD: amiga_init.c,v 1.8 2009/07/21 09:49:15 phx Exp $"); 36 37#include <sys/param.h> 38#include <amiga/amiga/cc.h> 39#include <amiga/amiga/cia.h> 40#include <amiga/amiga/custom.h> 41#include <amiga/amiga/cfdev.h> 42#include <amiga/amiga/memlist.h> 43 44int machineid; 45 46vaddr_t CHIPMEMADDR; 47vaddr_t chipmem_start; 48vaddr_t chipmem_end; 49 50u_long boot_fphystart, boot_fphysize, cphysize; 51u_long boot_flags; 52 53char *esym; /* start address of cfdev/memlist-area */ 54 55struct boot_memlist *memlist; 56 57struct cfdev *cfdev; 58int ncfdev; 59 60u_long scsi_nosync; 61int shift_nosync; 62 63void set_boot_args(int, u_long, u_long, u_long, char *, int, u_long, u_long); 64 65 66/* 67 * called from locore.S, before initppc() 68 */ 69void 70set_boot_args(int boot_howto, u_long fstart, u_long fsize, u_long csize, 71 char *esymaddr, int cpuid, u_long flags, u_long inhsync) 72{ 73 char *end_loaded; 74 75 boothowto = boot_howto; 76 boot_fphystart = fstart; 77 boot_fphysize = fsize; 78 cphysize = csize; 79 esym = end_loaded = esymaddr; 80 machineid = cpuid; 81 boot_flags = flags; 82 scsi_nosync = inhsync; 83 84 /* 85 * The kernel ends at end_loaded, plus the cfdev and memlist 86 * structures we placed there in the loader. 87 * esym already takes a potential symbol-table into account. 88 */ 89 ncfdev = *(int *)end_loaded; 90 cfdev = (struct cfdev *)(end_loaded + sizeof(int)); 91 end_loaded += sizeof(int) + ncfdev * sizeof(struct cfdev); 92 memlist = (struct boot_memlist *)end_loaded; 93 94 CHIPMEMADDR = 0x0; 95 chipmem_start = CHIPMEMADDR; 96 chipmem_end = (vaddr_t)csize; 97 98 CIAADDR = 0xbfd000; 99 CIAAbase = CIAADDR + 0x1001; 100 CIABbase = CIAADDR; 101 102 CUSTOMADDR = 0xdff000; 103 CUSTOMbase = CUSTOMADDR; 104} 105 106/* 107 * called by cc_init_chipmem() from amiga/amiga/cc.c 108 */ 109void * 110chipmem_steal(long amount) 111{ 112 113 /* steal from top of chipmem, as amiga68k does */ 114 vaddr_t p = chipmem_end - amount; 115 if (p & 1) 116 p = p - 1; 117 chipmem_end = p; 118 if(chipmem_start > chipmem_end) 119 panic("not enough chip memory"); 120 return((void *)p); 121} 122 123/* 124 * Used by certain drivers currently to allocate zorro II or chip mem 125 * for bounce buffers. For amigappc we will only return chip memory. 126 */ 127void * 128alloc_z2mem(long amount) 129{ 130 131 return (alloc_chipmem(amount)); 132} 133