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If compiling for JavaStations, modify kernal VA layout to not conflict 

with the PROM. From Valeriy E. Ushakov. This is a hack, but as long as
we don't have a way to arrange for a proper VA layout on this machines
(i.e. beyound the PROM) it is needed.
This commit is contained in:
martin 2003-12-12 14:51:48 +00:00
parent 808a75e1c5
commit 119a91826a
1 changed files with 10 additions and 1 deletions
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11
sys/arch/sparc/include/param.h
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@ -1,4 +1,4 @@
/* $NetBSD: param.h,v 1.61 2003/08/07 16:29:40 agc Exp $ */
/* $NetBSD: param.h,v 1.62 2003/12/12 14:51:48 martin Exp $ */
/*
* Copyright (c) 1992, 1993
@ -85,7 +85,16 @@
extern int nbpg, pgofset, pgshift;
#endif
#if !(defined(PROM_AT_F0) || defined(MSIIEP))
#define KERNBASE 0xf0000000 /* start of kernel virtual space */
#else
/*
* JS1/OF has prom sitting in f000.0000..f007.ffff, modify kernel VA
* layout to work around that. XXX - kernel should live beyound prom on
* those machines.
*/
#define KERNBASE 0xe8000000
#endif
#define KERNEND 0xfe000000 /* end of kernel virtual space */
/* Arbitrarily only use 1/4 of the kernel address space for buffers. */
#define VM_MAX_KERNEL_BUF ((KERNEND - KERNBASE)/4)