2 * SPDX-License-Identifier: BSD-4-Clause
4 * Copyright (c) 2001 David E. O'Brien
5 * Copyright (c) 1990 The Regents of the University of California.
8 * This code is derived from software contributed to Berkeley by
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the University of
22 * California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * from: @(#)param.h 5.8 (Berkeley) 6/28/91
43 #ifndef _POWERPC_INCLUDE_PARAM_H_
44 #define _POWERPC_INCLUDE_PARAM_H_
47 * Machine dependent constants for PowerPC
50 #include <machine/_align.h>
52 /* Needed to display interrupts on OFW PCI */
53 #define __PCI_REROUTE_INTERRUPT
56 #define MACHINE "powerpc"
60 #define MACHINE_ARCH "powerpc64"
63 #define MACHINE_ARCH "powerpcspe"
65 #define MACHINE_ARCH "powerpc"
69 #define MID_MACHINE MID_POWERPC
71 #ifndef MACHINE_ARCH32
72 #define MACHINE_ARCH32 "powerpc"
88 #define ALIGNBYTES _ALIGNBYTES
89 #define ALIGN(p) _ALIGN(p)
91 * ALIGNED_POINTER is a boolean macro that checks whether an address
92 * is valid to fetch data elements of type t from on this architecture.
93 * This does not reflect the optimal alignment, just the possibility
94 * (within reasonable limits).
96 #define ALIGNED_POINTER(p, t) ((((uintptr_t)(p)) & (sizeof (t) - 1)) == 0)
99 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an
100 * architecture. It should be used with appropriate caution.
102 #define CACHE_LINE_SHIFT 7
103 #define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT)
105 #define PAGE_SHIFT 12
106 #define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */
107 #define PAGE_MASK (PAGE_SIZE - 1)
108 #define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
109 #define NPDEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
111 #define L1_PAGE_SIZE_SHIFT 39
112 #define L1_PAGE_SIZE (1UL<<L1_PAGE_SIZE_SHIFT)
113 #define L1_PAGE_MASK (L1_PAGE_SIZE-1)
115 #define L2_PAGE_SIZE_SHIFT 30
116 #define L2_PAGE_SIZE (1UL<<L2_PAGE_SIZE_SHIFT)
117 #define L2_PAGE_MASK (L2_PAGE_SIZE-1)
119 #define L3_PAGE_SIZE_SHIFT 21
120 #define L3_PAGE_SIZE (1UL<<L3_PAGE_SIZE_SHIFT)
121 #define L3_PAGE_MASK (L3_PAGE_SIZE-1)
123 #define MAXPAGESIZES 3 /* maximum number of supported page sizes */
125 #define RELOCATABLE_KERNEL 1 /* kernel may relocate during startup */
129 #define KSTACK_PAGES 12 /* includes pcb */
131 #define KSTACK_PAGES 4 /* includes pcb */
134 #define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */
135 #define USPACE (kstack_pages * PAGE_SIZE) /* total size of pcb */
138 * Mach derived conversion macros
140 #define trunc_page(x) ((x) & ~(PAGE_MASK))
141 #define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK)
142 #define trunc_2mpage(x) ((unsigned long)(x) & ~L3_PAGE_MASK)
143 #define round_2mpage(x) ((((unsigned long)(x)) + L3_PAGE_MASK) & ~L3_PAGE_MASK)
144 #define trunc_1gpage(x) ((unsigned long)(x) & ~L2_PAGE_MASK)
146 #define atop(x) ((x) >> PAGE_SHIFT)
147 #define ptoa(x) ((x) << PAGE_SHIFT)
149 #define powerpc_btop(x) ((x) >> PAGE_SHIFT)
150 #define powerpc_ptob(x) ((x) << PAGE_SHIFT)
152 #define pgtok(x) ((x) * (PAGE_SIZE / 1024UL))
154 #define btoc(x) ((vm_offset_t)(((x)+PAGE_MASK)>>PAGE_SHIFT))
156 #endif /* !_POWERPC_INCLUDE_PARAM_H_ */