Do not allocate NuBus space at boot time. Do allocate enough space for
the console video, though.
This commit is contained in:
briggs
parent
f194862b11
commit
333d8a1deb
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@ -1,4 +1,4 @@
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/* $NetBSD: pmap_bootstrap.c,v 1.21 1996/05/05 06:54:21 briggs Exp $ */
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/* $NetBSD: pmap_bootstrap.c,v 1.22 1996/05/06 01:04:58 briggs Exp $ */
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/*
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* Copyright (c) 1991, 1993
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@ -83,10 +83,14 @@ extern int nbnumranges;
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extern u_long nbphys[];
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extern u_long nblog[];
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extern signed long nblen[];
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#define VIDMAPSIZE btoc(mac68k_round_page(mac68k_vidlen))
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extern u_int32_t mac68k_vidlen;
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#define VIDMAPSIZE btoc(mac68k_round_page(vidlen))
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extern u_int32_t mac68k_vidlog;
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extern u_int32_t mac68k_vidphys;
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extern u_int32_t videoaddr;
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extern u_int32_t videorowbytes;
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extern u_int32_t videosize;
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static int vidlen;
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static u_int32_t newvideoaddr;
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extern caddr_t ROMBase;
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@ -113,13 +117,14 @@ pmap_bootstrap(nextpa, firstpa)
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vm_offset_t nextpa;
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register vm_offset_t firstpa;
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{
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vm_offset_t kstpa, kptpa, vidpa, iiopa, nbpa, rompa;
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vm_offset_t kstpa, kptpa, vidpa, iiopa, rompa;
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vm_offset_t kptmpa, lkptpa, p0upa;
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u_int nptpages, kstsize;
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int i;
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register st_entry_t protoste, *ste;
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register pt_entry_t protopte, *pte, *epte;
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vidlen = ((videosize >> 16) & 0xffff) * videorowbytes;
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/*
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* Calculate important physical addresses:
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*
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@ -132,9 +137,6 @@ pmap_bootstrap(nextpa, firstpa)
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* vidpa internal video space for some machines
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* PT pages VIDMAPSIZE pages
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*
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* nbpa NuBus IO space
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* PT pages NBMAPSIZE pages
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*
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* rompa ROM space
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* PT pages ROMMAPSIZE pages
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*
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@ -160,12 +162,10 @@ pmap_bootstrap(nextpa, firstpa)
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nextpa += kstsize * NBPG;
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kptpa = nextpa;
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nptpages = Sysptsize +
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(IIOMAPSIZE + NBMAPSIZE + ROMMAPSIZE + VIDMAPSIZE
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+ NPTEPG - 1) / NPTEPG;
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(IIOMAPSIZE + ROMMAPSIZE + VIDMAPSIZE + NPTEPG - 1) / NPTEPG;
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nextpa += nptpages * NBPG;
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vidpa = nextpa - VIDMAPSIZE * sizeof(pt_entry_t);
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nbpa = vidpa - NBMAPSIZE * sizeof(pt_entry_t);
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rompa = nbpa - ROMMAPSIZE * sizeof(pt_entry_t);
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rompa = vidpa - ROMMAPSIZE * sizeof(pt_entry_t);
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iiopa = rompa - IIOMAPSIZE * sizeof(pt_entry_t);
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kptmpa = nextpa;
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nextpa += NBPG;
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@ -377,22 +377,14 @@ pmap_bootstrap(nextpa, firstpa)
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}
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pte = PA2VA(rompa, u_int *);
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epte = PA2VA(nbpa, u_int *);
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epte = PA2VA(vidpa, u_int *);
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protopte = ((u_int) ROMBase) | PG_RO | PG_V;
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while (pte < epte) {
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*pte++ = protopte;
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protopte += NBPG;
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}
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pte = PA2VA(nbpa, u_int *);
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epte = pte + NBMAPSIZE;
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protopte = NBBASE | PG_RW | PG_V | PG_CI;
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while (pte < epte) {
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*pte++ = protopte;
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protopte += NBPG;
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}
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if (mac68k_vidlog) {
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if (vidlen) {
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pte = PA2VA(vidpa, u_int *);
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epte = pte + VIDMAPSIZE;
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protopte = mac68k_vidphys | PG_RW | PG_V | PG_CI;
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@ -420,18 +412,17 @@ pmap_bootstrap(nextpa, firstpa)
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Sysmap = (pt_entry_t *)mac68k_ptob(nptpages * NPTEPG);
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IOBase = (u_long)mac68k_ptob(nptpages*NPTEPG -
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(IIOMAPSIZE + ROMMAPSIZE + NBMAPSIZE + VIDMAPSIZE));
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(IIOMAPSIZE + ROMMAPSIZE + VIDMAPSIZE));
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ROMBase = (char *)mac68k_ptob(nptpages*NPTEPG -
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(ROMMAPSIZE + NBMAPSIZE + VIDMAPSIZE));
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(ROMMAPSIZE + VIDMAPSIZE));
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NuBusBase = (u_long)mac68k_ptob(nptpages*NPTEPG -
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(NBMAPSIZE + VIDMAPSIZE));
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if (mac68k_vidlog)
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if (vidlen) {
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newvideoaddr =
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mac68k_vidlog = (u_int32_t)
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mac68k_ptob(nptpages*NPTEPG - VIDMAPSIZE)
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+ (mac68k_vidphys & PGOFSET);
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}
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/*
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* Setup u-area for process 0.
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@ -562,11 +553,9 @@ void
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bootstrap_mac68k(tc)
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int tc;
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{
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extern u_long videoaddr;
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extern caddr_t esym;
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vm_offset_t nextpa;
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caddr_t oldROMBase;
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u_long newvideoaddr;
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if (mac68k_machine.do_graybars)
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printf("Bootstrapping NetBSD/mac68k.\n");
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@ -612,14 +601,8 @@ bootstrap_mac68k(tc)
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if (mac68k_machine.do_graybars)
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printf("Pmap bootstrapped.\n");
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if (mac68k_vidlog)
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newvideoaddr = mac68k_vidlog;
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else {
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if (NBBASE <= videoaddr && videoaddr <= NBTOP)
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newvideoaddr = videoaddr - NBBASE + NuBusBase;
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else
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panic("Don't know how to relocate video!\n");
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}
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if (!vidlen)
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panic("Don't know how to relocate video!\n");
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if (mac68k_machine.do_graybars)
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printf("Moving ROMBase from %p to %p.\n",
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@ -629,7 +612,8 @@ bootstrap_mac68k(tc)
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if (mac68k_machine.do_graybars)
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printf("Video address 0x%lx -> 0x%lx.\n",
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videoaddr, newvideoaddr);
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(unsigned long) videoaddr,
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(unsigned long) newvideoaddr);
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mac68k_set_io_offsets(IOBase);
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videoaddr = newvideoaddr;
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