/* $OpenBSD: param.h,v 1.42 2023/12/14 13:26:49 claudio Exp $ */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Lawrence Berkeley Laboratory. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Copyright (c) 1996-1999 Eduardo Horvath * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ #ifndef _MACHINE_PARAM_H_ #define _MACHINE_PARAM_H_ #define _MACHINE sparc64 #define MACHINE "sparc64" #define _MACHINE_ARCH sparc64 #define MACHINE_ARCH "sparc64" #define MID_MACHINE MID_SPARC64 #define PAGE_SHIFT 13 #define PAGE_SIZE (1 << PAGE_SHIFT) #define PAGE_MASK (PAGE_SIZE - 1) /* * Here are all the magic kernel virtual addresses and how they're allocated. * * First, the PROM is usually a fixed-sized block from 0x00000000f0000000 to * 0x00000000f0100000. It also uses some space around 0x00000000fff00000 to * map in device registers. The rest is pretty much ours to play with. * * The kernel starts at KERNBASE. Here's the layout. We use macros to set * the addresses so we can relocate everything easily. We use 4MB locked TTEs * to map in the kernel text and data segments. Any extra pages are recycled, * so they can potentially be double-mapped. This shouldn't really be a * problem since they're unused, but wild pointers can cause silent data * corruption if they are in those segments. * * 0x0000000000000000: 64K NFO page zero * 0x0000000000010000: Userland or PROM * KERNBASE: 4MB kernel text and read only data * This is mapped in the ITLB and * Read-Only in the DTLB * KERNBASE+0x400000: 4MB kernel data and BSS -- not in ITLB * Contains context table, kernel pmap, * and other important structures. * KERNBASE+0x800000: Unmapped page -- redzone * KERNBASE+0x802000: Process 0 stack and u-area * KERNBASE+0x806000: 2 pages for pmap_copy_page and /dev/mem * KERNBASE+0x80a000: Start of kernel VA segment * KERNEND: End of kernel VA segment * KERNEND+0x02000: Auxreg_va (unused?) * KERNEND+0x04000: TMPMAP_VA (unused?) * KERNEND+0x06000: message buffer. * KERNEND+0x010000: 64K locked TTE -- different for each CPU * Contains interrupt stack, cpu_info structure, * and 32KB kernel TSB. * */ #define KERNBASE 0x001000000 /* start of kernel virtual space */ #ifdef _KERNEL #define KERNEND 0x0e0000000 /* end of kernel virtual space */ #define _MAXNBPG 8192 /* fixed VAs, independent of actual NBPG */ #define AUXREG_VA ( KERNEND + _MAXNBPG) /* 1 page REDZONE */ #define TMPMAP_VA ( AUXREG_VA + _MAXNBPG) #define MSGBUF_VA ( TMPMAP_VA + _MAXNBPG) /* * Here's the location of the interrupt stack and CPU structure. */ #define INTSTACK ( KERNEND + 8*_MAXNBPG)/* 64K after kernel end */ #define EINTSTACK ( INTSTACK + 2*USPACE) /* 32KB */ #define CPUINFO_VA ( EINTSTACK) #define NBPG PAGE_SIZE /* bytes/page */ #define PGSHIFT PAGE_SHIFT /* LOG2(PAGE_SIZE) */ #define PGOFSET PAGE_MASK /* byte offset into page */ #define UPAGES 2 /* pages of u-area */ #define USPACE (UPAGES * PAGE_SIZE) /* total size of u-area */ #define USPACE_ALIGN 0 /* u-area alignment 0-none */ #define NMBCLUSTERS (64 * 1024) /* max cluster allocation */ #ifndef MSGBUFSIZE #define MSGBUFSIZE (1 * PAGE_SIZE) #endif #ifndef _LOCORE extern void delay(unsigned int); #define DELAY(n) delay(n) extern int cputyp; #if defined (SUN4US) || defined (SUN4V) #define CPU_ISSUN4U (cputyp == CPU_SUN4U) #define CPU_ISSUN4US (cputyp == CPU_SUN4US) #define CPU_ISSUN4V (cputyp == CPU_SUN4V) #else #define CPU_ISSUN4U (1) #define CPU_ISSUN4US (0) #define CPU_ISSUN4V (0) #endif #endif /* _LOCORE */ /* * Values for the cputyp variable. */ #define CPU_SUN4 0 #define CPU_SUN4C 1 #define CPU_SUN4M 2 #define CPU_SUN4U 3 #define CPU_SUN4US 4 #define CPU_SUN4V 5 /* * On a sun4u machine, the page size is 8192. */ #ifndef _LOCORE #include <machine/cpu.h> #endif #endif /* _KERNEL */ #endif /* _MACHINE_PARAM_H_ */
