1 /* $NetBSD: vmparam.h,v 1.26 2003/08/07 16:27:47 agc Exp $ */
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34 #ifndef _MACHINE_VMPARAM_H_
35 #define _MACHINE_VMPARAM_H_
38 /*#include <arm/arm32/vmparam.h>
41 * Address space constants
45 * The line between user space and kernel space
46 * Mappings >= KERNEL_BASE are constant across all processes
48 #define KERNBASE 0xc0000000
51 * max number of non-contig chunks of physical RAM you can have
54 #define VM_PHYSSEG_MAX 32
57 * The physical address space is densely populated.
59 #define VM_PHYSSEG_DENSE
62 * we support 2 free lists:
64 * - DEFAULT for all systems
65 * - ISADMA for the ISA DMA range on Sharks only
68 #define VM_NFREELIST 2
69 #define VM_FREELIST_DEFAULT 0
70 #define VM_FREELIST_ISADMA 1
72 #define UPT_MAX_ADDRESS VADDR(UPTPTDI + 3, 0)
73 #define UPT_MIN_ADDRESS VADDR(UPTPTDI, 0)
75 #define VM_MIN_ADDRESS (0x00001000)
76 #ifdef ARM_USE_SMALL_ALLOC
77 #ifndef ARM_KERN_DIRECTMAP
78 #define ARM_KERN_DIRECTMAP 512 * 1024 * 1024 /* 512 MB */
80 #define VM_MAXUSER_ADDRESS KERNBASE - ARM_KERN_DIRECTMAP
81 #else /* ARM_USE_SMALL_ALLOC */
82 #define VM_MAXUSER_ADDRESS KERNBASE
83 #endif /* ARM_USE_SMALL_ALLOC */
84 #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
86 #define USRSTACK VM_MAXUSER_ADDRESS
88 /* initial pagein size of beginning of executable file */
89 #ifndef VM_INITIAL_PAGEIN
90 #define VM_INITIAL_PAGEIN 16
93 #ifndef VM_MIN_KERNEL_ADDRESS
94 #define VM_MIN_KERNEL_ADDRESS KERNBASE
97 #define VM_MAX_KERNEL_ADDRESS 0xffffffff
99 * Virtual size (bytes) for various kernel submaps.
103 #define VM_KMEM_SIZE (12*1024*1024)
106 #define MAXTSIZ (16*1024*1024)
107 #define DFLDSIZ (128*1024*1024)
108 #define MAXDSIZ (512*1024*1024)
109 #define DFLSSIZ (2*1024*1024)
110 #define MAXSSIZ (8*1024*1024)
111 #define SGROWSIZ (128*1024)
114 #define VM_PROT_READ_IS_EXEC
116 #ifdef ARM_USE_SMALL_ALLOC
117 #define UMA_MD_SMALL_ALLOC
118 #endif /* ARM_USE_SMALL_ALLOC */
119 #endif /* _MACHINE_VMPARAM_H_ */