NetBSD/sys/arch/vax/boot/data.h

/*	$NetBSD: data.h,v 1.3 1995/06/16 15:07:58 ragge Exp $ */
/*
 * Copyright (c) 1995 Ludd, University of Lule}, Sweden.
 * All rights reserved.
 *
 * This code is derived from software contributed to Ludd by
 * Bertram Barth.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed at Ludd, University of 
 *      Lule}, Sweden and its contributors.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

 /* All bugs are subject to removal without further notice */
		


extern int bootregs[16];

/*
 * "VAX/VMS Internals and Data Structures"
 * gives the following description of RPB on page 907 ff.
 */

#ifndef byte
# define byte unsigned char
#endif

struct rpb {	/* size		description */
	long base;	/*  4  physical base address of block */
	long restart;	/*  4  physical address of EXE$RESTART */
	long chksum;	/*  4  checksum of first 31 longwords of EXE$RESTART */
	long rststflg;	/*  4  Restart in progress flag */
	long haltpc;	/*  4  PC at HALT/restart */
	/* offset: 20 */
	long  haltpsl;	/*  4  PSL at HALT/restart */
	long  haltcode;	/*  4  reason for restart */
	long  bootr0;	/* 24  Saved bootstrap parameters (R0 through R5) */
	long  bootr1;
	long  bootr2;
	long  bootr3;
	long  bootr4;
	long  bootr5;
	long  iovec;	/*  4  Address of bootstrap driver */
	long  iovecsz;	/*  4  Size (in bytes) of bootstrap driver */
	/* offset: 60 */
	long  fillbn;	/*  4  LBN of seconday bootstrap file */
	long  filsiz;	/*  4  Size (in blocks) of seconday bootstrap file */
	long  pfnmap[2];	/*  8  Descriptor of PFN bitmap */
	long  pfncnt;	/*  4  Count of physical pages */
	/* offset: 80 */
	long  svaspt;	/*  4  system virtual address of system page table */
	long  csrphy;	/*  4  Physical Address of UBA device CSR */
	long  csrvir;	/*  4  Virtual Address of UBA device CSR */
	long  adpphy;	/*  4  Physical Address of adapter configurate reg. */
	long  adpvir;	/*  4  Virtual Address of adapter configurate reg. */
	/* offset: 100 */
	short unit;	   /*  2  Bootstrap device unit number */
	byte  devtyp;	/*  1  Bootstrap device type code */
	byte  slave;	/*  1  Bootstrap device slave unit number */
	char  file[40]; /* 40  Secondary bootstrap file name */
	byte  confreg[16];    /* 16  Byte array of adapter types */
	/* offset: 160 */
#if 0
	byte  hdrpgcnt;	/*  1  Count of header pages in 2nd bootstrap image */
	short bootndt;	/*  2  Type of boot adapter */
	byte  flags;	/*  1  Miscellaneous flag bits */
#else
	long  align;	/*     if the compiler doesnt proper alignment */
#endif
	long  max_pfn;	/*  4  Absolute highest PFN */
	long  sptep;		/*  4  System space PTE prototype register */
	long  sbr;		/*  4  Saved system base register */
	long  cpudbvec;	/*  4  Physical address of per-CPU database vector */
	/* offset: 180 */
	long  cca_addr;	/*  4  Physical address of CCA */
	long  slr;		/*  4  Saved system length register */
	long  memdesc[16];	/* 64  Longword array of memory descriptors */
	long  smp_pc;		/*  4  SMP boot page physical address */
	long  wait;	/*  4  Bugcheck loop code for attached processor */
	/* offset: 260 */
	long  badpgs;	/*  4  Number of bad pages found in memory scan */
	byte  ctrlltr;	/*  1  Controller letter designation */
	byte  scbpagct;       /*  1  SCB page count */
	byte  reserved[6];	/*  6  -- */
	long  vmb_revision;	/*  4  VMB revision label */
};

extern struct rpb *rpb;

/*
 * rpb->iovec gives pointer to this structure.
 *
 * bqo->unit_init() is used to initialize the controller,
 * bqo->qio() is used to read from boot-device/
 */

struct bqo {
	long  qio;            /*  4  QIO entry  */
	long  map;            /*  4  Mapping entry  */
	long  select;         /*  4  Selection entry  */
	long  drivrname;      /*  4  Offset to driver name  */
	short version;        /*  2  Version number of VMB  */
	short vercheck;       /*  2  Check field  */
	/* offset: 20 */
	long  reselect;       /*  4  Reselection entry  */
	long  move;           /*  4  Move driver entry  */
	long  unit_init;      /*  4  Unit initialization entry  */
	long  auxdrname;      /*  4  Offset to auxiliary driver name  */
	long  umr_dis;        /*  4  UNIBUS Map Registers to disable  */
	/* offset: 40 */
	long  ucode;          /*  4  Absolute address of booting microcode  */
	long  unit_disc;      /*  4  Unit disconnecting entry */
	long  devname;        /*  4  Offset to boot device name */
	long  umr_tmpl;       /*  4  UNIBUS map register template */
	/* offset: 60 */
	/*
	 * the rest is unknown / unneccessary ...
	 */
	long  xxx[6];		/* 24 --	total: 84 bytes */
};
      
extern struct bqo *bqo;