1/*-
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 * Copyright (c) 1994 John S. Dyson
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * William Jolitz.
--- 23 unchanged lines hidden (view full) ---
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * from: @(#)vmparam.h 5.9 (Berkeley) 5/12/91
39 * from: FreeBSD: src/sys/i386/include/vmparam.h,v 1.33 2000/03/30
40 * $FreeBSD: head/sys/sparc64/include/vmparam.h 88653 2001-12-29 08:25:43Z jake $
41 */
42
43
44#ifndef _MACHINE_VMPARAM_H_
45#define _MACHINE_VMPARAM_H_
46
47/*
48 * Virtual memory related constants, all in bytes
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72 * amount of real time. You probably shouldn't change this;
73 * it is used in subtle ways (fractions and multiples of it are, that is, like
74 * half of a ``long time'', almost a long time, etc.)
75 * It is related to human patience and other factors which don't really
76 * change over time.
77 */
78#define MAXSLP 20
79
80/*
81 * Highest user address. Also address of initial user stack. This is
82 * arbitrary, neither the structure or size of the user page table (tsb)
83 * nor the location or size of the kernel virtual address space have any
84 * bearing on what we use for user addresses. We want something relatively
85 * high to give a large address space, but we also have to take the out of
86 * range va hole into account. So we pick an address just before the start
87 * of the hole, which gives a user address space of just under 8TB. Note
88 * that if this moves above the va hole, we will have to deal with sign
89 * extension of virtual addresses.
90 */
91#define VM_MAXUSER_ADDRESS ((vm_offset_t)0x7fe00000000)
92
93#define VM_MIN_ADDRESS ((vm_offset_t)0)
94#define VM_MAX_ADDRESS (VM_MAXUSER_ADDRESS)
95
96/*
97 * Initial user stack address for 64 bit processes. Should be highest user
98 * virtual address.
99 */
100#define USRSTACK VM_MAXUSER_ADDRESS
101
102/*
103 * Virtual size (bytes) for various kernel submaps.
104 */
105#ifndef VM_KMEM_SIZE
106#define VM_KMEM_SIZE (12*1024*1024)
107#endif
108
109/*
110 * Number of 4 meg pages to use for the kernel tsb.
111 */
112#ifndef KVA_PAGES
113#define KVA_PAGES (1)
114#endif
115
116/*
117 * Range of kernel virtual addresses. max = min + range.
118 */
119#define KVA_RANGE \
120 ((KVA_PAGES * PAGE_SIZE_4M) << (PAGE_SHIFT - TTE_SHIFT))
121
122/*
123 * Lowest kernel virtual address, where the kernel is loaded.
124 *
125 * If we are using less than 4 super pages for the kernel tsb, the address
126 * space is less than 4 gigabytes, so put it at the end of the first 4
127 * gigbytes. This allows the kernel and the firmware mappings to be mapped
128 * with a single contiguous tsb. Otherwise start at 0, we'll cover them
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134 * openfirmware 0xf0000000
135 * kernbase 0xc0000000
136 * kva_pages = 8
137 * vm_max_kernel_address 0x1ffffe000
138 * openfirmware 0xf0000000
139 * kernbase 0x0
140 *
141 * There are at least 4 pages of dynamic linker junk before kernel text begins,
142 * so starting at zero is fairly safe (if the firmware will let us).
143 */
144#if KVA_PAGES < 4
145#define VM_MIN_KERNEL_ADDRESS ((1UL << 32) - KVA_RANGE)
146#else
147#define VM_MIN_KERNEL_ADDRESS (0)
148#endif
149
150#define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + KVA_RANGE - PAGE_SIZE)
151#define KERNBASE (VM_MIN_KERNEL_ADDRESS)
152
153/*
154 * Initial pagein size of beginning of executable file.
155 */
156#ifndef VM_INITIAL_PAGEIN
157#define VM_INITIAL_PAGEIN 16
158#endif
159
160#endif /* !_MACHINE_VMPARAM_H_ */
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 * Copyright (c) 1994 John S. Dyson
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * William Jolitz.
--- 23 unchanged lines hidden (view full) ---
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * from: @(#)vmparam.h 5.9 (Berkeley) 5/12/91
39 * from: FreeBSD: src/sys/i386/include/vmparam.h,v 1.33 2000/03/30
40 * $FreeBSD: head/sys/sparc64/include/vmparam.h 88653 2001-12-29 08:25:43Z jake $
41 */
42
43
44#ifndef _MACHINE_VMPARAM_H_
45#define _MACHINE_VMPARAM_H_
46
47/*
48 * Virtual memory related constants, all in bytes
--- 23 unchanged lines hidden (view full) ---
72 * amount of real time. You probably shouldn't change this;
73 * it is used in subtle ways (fractions and multiples of it are, that is, like
74 * half of a ``long time'', almost a long time, etc.)
75 * It is related to human patience and other factors which don't really
76 * change over time.
77 */
78#define MAXSLP 20
79
80/*
81 * Highest user address. Also address of initial user stack. This is
82 * arbitrary, neither the structure or size of the user page table (tsb)
83 * nor the location or size of the kernel virtual address space have any
84 * bearing on what we use for user addresses. We want something relatively
85 * high to give a large address space, but we also have to take the out of
86 * range va hole into account. So we pick an address just before the start
87 * of the hole, which gives a user address space of just under 8TB. Note
88 * that if this moves above the va hole, we will have to deal with sign
89 * extension of virtual addresses.
90 */
91#define VM_MAXUSER_ADDRESS ((vm_offset_t)0x7fe00000000)
92
93#define VM_MIN_ADDRESS ((vm_offset_t)0)
94#define VM_MAX_ADDRESS (VM_MAXUSER_ADDRESS)
95
96/*
97 * Initial user stack address for 64 bit processes. Should be highest user
98 * virtual address.
99 */
100#define USRSTACK VM_MAXUSER_ADDRESS
101
102/*
103 * Virtual size (bytes) for various kernel submaps.
104 */
105#ifndef VM_KMEM_SIZE
106#define VM_KMEM_SIZE (12*1024*1024)
107#endif
108
109/*
110 * Number of 4 meg pages to use for the kernel tsb.
111 */
112#ifndef KVA_PAGES
113#define KVA_PAGES (1)
114#endif
115
116/*
117 * Range of kernel virtual addresses. max = min + range.
118 */
119#define KVA_RANGE \
120 ((KVA_PAGES * PAGE_SIZE_4M) << (PAGE_SHIFT - TTE_SHIFT))
121
122/*
123 * Lowest kernel virtual address, where the kernel is loaded.
124 *
125 * If we are using less than 4 super pages for the kernel tsb, the address
126 * space is less than 4 gigabytes, so put it at the end of the first 4
127 * gigbytes. This allows the kernel and the firmware mappings to be mapped
128 * with a single contiguous tsb. Otherwise start at 0, we'll cover them
--- 5 unchanged lines hidden (view full) ---
134 * openfirmware 0xf0000000
135 * kernbase 0xc0000000
136 * kva_pages = 8
137 * vm_max_kernel_address 0x1ffffe000
138 * openfirmware 0xf0000000
139 * kernbase 0x0
140 *
141 * There are at least 4 pages of dynamic linker junk before kernel text begins,
142 * so starting at zero is fairly safe (if the firmware will let us).
143 */
144#if KVA_PAGES < 4
145#define VM_MIN_KERNEL_ADDRESS ((1UL << 32) - KVA_RANGE)
146#else
147#define VM_MIN_KERNEL_ADDRESS (0)
148#endif
149
150#define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + KVA_RANGE - PAGE_SIZE)
151#define KERNBASE (VM_MIN_KERNEL_ADDRESS)
152
153/*
154 * Initial pagein size of beginning of executable file.
155 */
156#ifndef VM_INITIAL_PAGEIN
157#define VM_INITIAL_PAGEIN 16
158#endif
159
160#endif /* !_MACHINE_VMPARAM_H_ */