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 * Override the default pager_map size, there's not enough KVA.
55 * max number of non-contig chunks of physical RAM you can have
58 #define VM_PHYSSEG_MAX 32
61 * when converting a physical address to a vm_page structure, we
62 * want to use a binary search on the chunks of physical memory
66 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH
69 * this indicates that we can't add RAM to the VM system after the
70 * vm system is init'd.
73 #define VM_PHYSSEG_NOADD
76 * The physical address space is densely populated.
78 #define VM_PHYSSEG_DENSE
81 * we support 2 free lists:
83 * - DEFAULT for all systems
84 * - ISADMA for the ISA DMA range on Sharks only
87 #define VM_NFREELIST 2
88 #define VM_FREELIST_DEFAULT 0
89 #define VM_FREELIST_ISADMA 1
91 #define UPT_MAX_ADDRESS VADDR(UPTPTDI + 3, 0)
92 #define UPT_MIN_ADDRESS VADDR(UPTPTDI, 0)
94 #define VM_MIN_ADDRESS (0x00001000)
95 #ifdef ARM_USE_SMALL_ALLOC
96 #ifndef ARM_KERN_DIRECTMAP
97 #define ARM_KERN_DIRECTMAP 512 * 1024 * 1024 /* 512 MB */
99 #define VM_MAXUSER_ADDRESS KERNBASE - ARM_KERN_DIRECTMAP
100 #else /* ARM_USE_SMALL_ALLOC */
101 #define VM_MAXUSER_ADDRESS KERNBASE
102 #endif /* ARM_USE_SMALL_ALLOC */
103 #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
105 #define USRSTACK VM_MAXUSER_ADDRESS
107 /* initial pagein size of beginning of executable file */
108 #ifndef VM_INITIAL_PAGEIN
109 #define VM_INITIAL_PAGEIN 16
112 #ifndef VM_MIN_KERNEL_ADDRESS
113 #define VM_MIN_KERNEL_ADDRESS KERNBASE
116 #define VM_MAX_KERNEL_ADDRESS 0xffffffff
118 * Virtual size (bytes) for various kernel submaps.
122 #define VM_KMEM_SIZE (12*1024*1024)
125 #define MAXTSIZ (16*1024*1024)
126 #define DFLDSIZ (128*1024*1024)
127 #define MAXDSIZ (512*1024*1024)
128 #define DFLSSIZ (2*1024*1024)
129 #define MAXSSIZ (8*1024*1024)
130 #define SGROWSIZ (128*1024)
133 #define VM_PROT_READ_IS_EXEC
135 #ifdef ARM_USE_SMALL_ALLOC
136 #define UMA_MD_SMALL_ALLOC
137 #endif /* ARM_USE_SMALL_ALLOC */
138 #endif /* _MACHINE_VMPARAM_H_ */