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Collect various kernel constants together and define them in all one 

place (some moved from param.h)
Define several constants such as page table addresses in terms of other
constants.
Increase some of the limits :
  MAXTSIZ	8MB -> 16MB
  DFLDSIZ	16MB -> 128MB
  MAXDSIZ	256MB -> 512MB
  DFLSSIZ	512KB -> 2MB
This commit is contained in:
mark 1998-08-25 21:53:37 +00:00
parent 4e8239cdca
commit cda0e37703
1 changed files with 39 additions and 11 deletions
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50
sys/arch/arm32/include/vmparam.h
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@ -1,4 +1,4 @@
/* $NetBSD: vmparam.h,v 1.9 1998/07/08 04:49:21 thorpej Exp $ */
/* $NetBSD: vmparam.h,v 1.10 1998/08/25 21:53:37 mark Exp $ */
/*
* Copyright (c) 1988 The Regents of the University of California.
@ -36,6 +36,9 @@
#ifndef _ARM32_VMPARAM_H_
#define _ARM32_VMPARAM_H_
/* for pt_entry_t definition */
#include <machine/pte.h>
#define USRTEXT VM_MIN_ADDRESS
#define USRSTACK VM_MAXUSER_ADDRESS
@ -43,15 +46,15 @@
* Note that MAXTSIZ mustn't be greater than 32M. Otherwise you'd have
* to change the compiler to not generate bl instructions
*/
#define MAXTSIZ (8*1024*1024) /* max text size */
#define MAXTSIZ (16*1024*1024) /* max text size */
#ifndef DFLDSIZ
#define DFLDSIZ (16*1024*1024) /* initial data size limit */
#define DFLDSIZ (128*1024*1024) /* initial data size limit */
#endif
#ifndef MAXDSIZ
#define MAXDSIZ (256*1024*1024) /* max data size */
#define MAXDSIZ (512*1024*1024) /* max data size */
#endif
#ifndef DFLSSIZ
#define DFLSSIZ (512*1024) /* initial stack size limit */
#define DFLSSIZ (2*1024*1024) /* initial stack size limit */
#endif
#ifndef MAXSSIZ
#define MAXSSIZ (8*1024*1024) /* max stack size */
@ -75,18 +78,43 @@
*/
#define MAXSLP 20
/*
*Address space constants
*/
/*
* The line between user space and kernel space
* Mappings >= KERNEL_SPACE_START are constant across all processes
*/
#define KERNEL_SPACE_START 0xf0000000
/* total number of page table entries to map 4GB * size of each entry*/
#define PAGE_TABLE_SPACE ((1 << (32 - PGSHIFT)) * sizeof(pt_entry_t))
/* Address where the page tables are mapped */
#define PAGE_TABLE_SPACE_START (KERNEL_SPACE_START - PAGE_TABLE_SPACE)
/* Various constants used by the MD code*/
#define KERNEL_BASE 0xf0000000
#define KERNEL_TEXT_BASE KERNEL_BASE
#define KERNEL_VM_BASE 0xf1000000
#define KERNEL_VM_SIZE 0x01ffffff
#define PAGE_DIRS_BASE 0xf3000000
#define ALT_PAGE_TBLS_BASE 0xf3c00000
#define CURRENT_PAGEDIR_HOLE 0xf5000000
#define PROCESS_PAGE_TBLS_BASE PAGE_TABLE_SPACE_START
#define CURRENT_PAGEDIR_BASE (PAGE_TABLE_SPACE_START + (CURRENT_PAGEDIR_HOLE >> PGSHIFT) * sizeof(pt_entry_t))
/*
* Mach derived constants
*/
/* Need to link some of these with some in param.h */
#define VM_MIN_ADDRESS ((vm_offset_t)0x00001000)
#define VM_MAXUSER_ADDRESS ((vm_offset_t)0xefc00000 - UPAGES * NBPG)
#define VM_MAX_ADDRESS ((vm_offset_t)0xeffc0000)
#define VM_MAXUSER_ADDRESS ((vm_offset_t)(PAGE_TABLE_SPACE_START - UPAGES * NBPG))
#define VM_MAX_ADDRESS ((vm_offset_t)(PAGE_TABLE_SPACE_START + (KERNEL_SPACE_START >> PGSHIFT) * sizeof(pt_entry_t)))
#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)0xf0000000)
#define VM_MAXKERN_ADDRESS ((vm_offset_t)0xf3000000)
#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)KERNEL_TEXT_BASE)
#define VM_MAXKERN_ADDRESS ((vm_offset_t)PAGE_DIRS_BASE)
#define VM_MAX_KERNEL_ADDRESS ((vm_offset_t)0xffffffff)
/*