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Annotation of sys/arch/hp300/hp300/pmap_bootstrap.c, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: pmap_bootstrap.c,v 1.24 2006/05/19 22:51:07 miod Exp $        */
                      2: /*     $NetBSD: pmap_bootstrap.c,v 1.13 1997/06/10 18:56:50 veego Exp $        */
                      3:
                      4: /*
                      5:  * Copyright (c) 1991, 1993
                      6:  *     The Regents of the University of California.  All rights reserved.
                      7:  *
                      8:  * This code is derived from software contributed to Berkeley by
                      9:  * the Systems Programming Group of the University of Utah Computer
                     10:  * Science Department.
                     11:  *
                     12:  * Redistribution and use in source and binary forms, with or without
                     13:  * modification, are permitted provided that the following conditions
                     14:  * are met:
                     15:  * 1. Redistributions of source code must retain the above copyright
                     16:  *    notice, this list of conditions and the following disclaimer.
                     17:  * 2. Redistributions in binary form must reproduce the above copyright
                     18:  *    notice, this list of conditions and the following disclaimer in the
                     19:  *    documentation and/or other materials provided with the distribution.
                     20:  * 3. Neither the name of the University nor the names of its contributors
                     21:  *    may be used to endorse or promote products derived from this software
                     22:  *    without specific prior written permission.
                     23:  *
                     24:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     25:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     26:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     27:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     28:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     29:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     30:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     31:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     32:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     33:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     34:  * SUCH DAMAGE.
                     35:  *
                     36:  *     @(#)pmap_bootstrap.c    8.1 (Berkeley) 6/10/93
                     37:  */
                     38:
                     39: #include <sys/param.h>
                     40: #include <sys/msgbuf.h>
                     41:
                     42: #include <machine/cpu.h>
                     43: #include <machine/frame.h>
                     44: #include <machine/pte.h>
                     45: #include <machine/vmparam.h>
                     46:
                     47: #include <machine/hp300spu.h>
                     48: #include <hp300/hp300/clockreg.h>
                     49:
                     50: #include <uvm/uvm_extern.h>
                     51:
                     52: caddr_t ledbase;       /* SPU LEDs mapping */
                     53:
                     54: extern vaddr_t CLKbase, MMUbase;
                     55: extern char *extiobase;
                     56: extern int eiomapsize;
                     57:
                     58: #define        RELOC(v, t)     *((t*)((u_int)&(v) + firstpa))
                     59: #define        PA2VA(v, t)     *((t*)((u_int)&(v)))
                     60:
                     61: #define        MACHINE_IIOMAPSIZE      IIOMAPSIZE
                     62: #define        MACHINE_INTIOBASE       INTIOBASE
                     63: #define        MACHINE_EIOMAPSIZE      RELOC(eiomapsize, int)
                     64:
                     65: #define        PMAP_MD_LOCALS          /* nothing */
                     66:
                     67: #define        PMAP_MD_RELOC1()        /* nothing */
                     68:
                     69: #define PMAP_MD_MAPIOSPACE()   /* nothing */
                     70:
                     71:        /*
                     72:         * intiobase, intiolimit: base and end of internal (DIO) IO space.
                     73:         * MACHINE_IIOMAPSIZE pages prior to external IO space at end of
                     74:         * static kernel page table.
                     75:         * extiobase: base of external (DIO-II) IO space.
                     76:         * MACHINE_EIOMAPSIZE pages at the end of the static kernel page table.
                     77:         * CLKbase, MMUbase: important registers in internal IO space
                     78:         * accessed from locore.
                     79:         */
                     80: #define        PMAP_MD_RELOC2() \
                     81: do { \
                     82:        RELOC(intiobase, char *) = (char *)iiobase; \
                     83:        RELOC(intiolimit, char *) = (char *)eiobase; \
                     84:        RELOC(extiobase, char *) = (char *)eiobase; \
                     85:        RELOC(CLKbase, vaddr_t) = iiobase + CLKBASE; \
                     86:        RELOC(MMUbase, vaddr_t) = iiobase + MMUBASE; \
                     87: } while (0)
                     88:
                     89: #define        PMAP_MD_MEMSIZE() \
                     90: do { \
                     91:        RELOC(avail_end, paddr_t) = MAXADDR - \
                     92:            (round_page(MSGBUFSIZE) + ptoa(1)); \
                     93: } while (0)
                     94:
                     95:        /*
                     96:         * Allocate some fixed, special purpose kernel virtual addresses
                     97:         */
                     98: #define        PMAP_MD_RELOC3() \
                     99: do { \
                    100:                RELOC(ledbase, caddr_t) = (caddr_t)va; \
                    101:                va += NBPG; \
                    102: } while (0)
                    103:
                    104: #include <m68k/m68k/pmap_bootstrap.c>
                    105:
                    106: void
                    107: pmap_init_md()
                    108: {
                    109:        vaddr_t         addr;
                    110:
                    111:        /*
                    112:         * mark as unavailable the regions which we have mapped in
                    113:         * pmap_bootstrap().
                    114:         */
                    115:        addr = (vaddr_t) intiobase;
                    116:        if (uvm_map(kernel_map, &addr,
                    117:                    ptoa(IIOMAPSIZE + eiomapsize),
                    118:                    NULL, UVM_UNKNOWN_OFFSET, 0,
                    119:                    UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE,
                    120:                                UVM_INH_NONE, UVM_ADV_RANDOM,
                    121:                                UVM_FLAG_FIXED)))
                    122:                panic("pmap_init: bogons in the VM system!");
                    123: }