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Fix uvm fault at startup on 040/060. (patch by minoura)

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This commit is contained in:
nsmrtks 2002-01-21 17:21:52 +00:00
parent efc5b2fd84
commit e23bb0cb51
1 changed files with 10 additions and 15 deletions
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25
sys/arch/x68k/x68k/pmap_bootstrap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap_bootstrap.c,v 1.21 2001/01/11 13:18:37 minoura Exp $ */
/* $NetBSD: pmap_bootstrap.c,v 1.22 2002/01/21 17:21:52 nsmrtks Exp $ */
/*
* Copyright (c) 1991, 1993
@ -42,7 +42,7 @@
#include "opt_m680x0.h"
#include <sys/param.h>
#include <uvm/uvm_extern.h> /* XXX needed? */
#include <uvm/uvm_extern.h>
#include <machine/pte.h>
#include <machine/vmparam.h>
#include <machine/cpu.h>
@ -111,9 +111,6 @@ pmap_bootstrap(nextpa, firstpa)
* iiopa internal IO space
* PT pages IIOMAPSIZE pages
*
* eiiopa page following
* internal IO space
*
* [ Sysptsize is the number of pages of PT, and IIOMAPSIZE
* is the number of PTEs, hence we need to round
* the total to a page boundary with IO maps at the end. ]
@ -142,6 +139,12 @@ pmap_bootstrap(nextpa, firstpa)
p0upa = nextpa;
nextpa += USPACE;
/*
* Clear all PTEs to zero
*/
for (pte = (pt_entry_t *)kstpa; pte < (pt_entry_t *)p0upa; pte++)
*pte = 0;
/*
* Initialize segment table and kernel page table map.
*
@ -201,13 +204,6 @@ pmap_bootstrap(nextpa, firstpa)
*pte++ = protoste;
protoste += (SG4_LEV2SIZE * sizeof(st_entry_t));
}
/*
* Initialize the final level 1 descriptor to map the last
* block of level 2 descriptors.
*/
ste = &((u_int *)kstpa)[SG4_LEV1SIZE-1];
pte = &((u_int *)kstpa)[kstsize*NPTEPG - SG4_LEV2SIZE];
*ste = (u_int)pte | SG_U | SG_RW | SG_V;
/*
* Initialize Sysptmap
*/
@ -274,10 +270,10 @@ pmap_bootstrap(nextpa, firstpa)
}
/*
* Validate PTEs for kernel data/bss, dynamic data allocated
* by us so far (nextpa - firstpa bytes), and pages for proc0
* by us so far (kstpa - firstpa bytes), and pages for proc0
* u-area and page table allocated below (RW).
*/
epte = &((u_int *)kptpa)[m68k_btop(nextpa - firstpa)];
epte = &((u_int *)kptpa)[m68k_btop(kstpa - firstpa)];
protopte = (protopte & ~PG_PROT) | PG_RW;
/*
* Enable copy-back caching of data pages
@ -422,7 +418,6 @@ pmap_bootstrap(nextpa, firstpa)
SG4_LEV2SIZE) / SG4_LEV2SIZE;
while (num)
kpm->pm_stfree &= ~l2tobm(num--);
kpm->pm_stfree &= ~l2tobm(MAXKL2SIZE-1);
for (num = MAXKL2SIZE;
num < sizeof(kpm->pm_stfree)*NBBY;
num++)