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Add in a clause ifdef'd for LIMITMEM- limit usage of memory to a certain 

amount. Temporary until more drivers use busdma stuff.

Also correct to unsigned the printing out of memory sizes.
This commit is contained in:
mjacob 1997-09-19 22:00:34 +00:00
parent 206b183a48
commit 4de790f125
1 changed files with 12 additions and 3 deletions
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15
sys/arch/alpha/alpha/machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: machdep.c,v 1.87 1997/09/19 14:47:33 mjacob Exp $ */
/* $NetBSD: machdep.c,v 1.88 1997/09/19 22:00:34 mjacob Exp $ */
/*
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
@ -29,7 +29,7 @@
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.87 1997/09/19 14:47:33 mjacob Exp $");
__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.88 1997/09/19 22:00:34 mjacob Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -377,6 +377,15 @@ alpha_init(pfn, ptb, bim, bip)
}
if (totalphysmem == 0)
panic("can't happen: system seems to have no memory!");
#ifdef LIMITMEM
if (totalphysmem >= btoc(LIMITMEM << 20)) {
u_int64_t ovf = totalphysmem - btoc(LIMITMEM << 20);
printf("********LIMITING MEMORY TO %dMB**********\n", LIMITMEM);
physmem = totalphysmem = btoc(LIMITMEM << 20);
unusedmem += ovf;
lastusablepage = firstusablepage + physmem - 1;
}
#endif
maxmem = physmem;
#if 0
@ -726,7 +735,7 @@ cpu_startup()
*/
printf(version);
identifycpu();
printf("real mem = %d (%d reserved for PROM, %d used by NetBSD)\n",
printf("real mem = %u (%u reserved for PROM, %u used by NetBSD)\n",
ctob(totalphysmem), ctob(resvmem), ctob(physmem));
if (unusedmem)
printf("WARNING: unused memory = %d bytes\n", ctob(unusedmem));