/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2004 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* Copyright (c) 1988 AT&T */ /* All Rights Reserved */ #ifndef _SYS_MACHPARAM_H #define _SYS_MACHPARAM_H #pragma ident "%Z%%M% %I% %E% SMI" #include #ifdef __cplusplus extern "C" { #endif #ifndef _ASM #define ADDRESS_C(c) c ## ul #else /* _ASM */ #define ADDRESS_C(c) (c) #endif /* _ASM */ /* * Machine dependent parameters and limits - PC version. */ #define NCPU 21 /* * The value defined below could grow to 16. hat structure and * page_t have room for 16 nodes. */ #define MAXNODES 4 #define NUMA_NODEMASK 0x0f /* * Define the FPU symbol if we could run on a machine with an external * FPU (i.e. not integrated with the normal machine state like the vax). * * The fpu is defined in the architecture manual, and the kernel hides * its absence if it is not present, that's pretty integrated, no? */ /* supported page sizes */ #define MMU_PAGE_SIZES 2 /* * MMU_PAGES* describes the physical page size used by the mapping hardware. * PAGES* describes the logical page size used by the system. */ #define MMU_PAGESIZE 0x1000 /* 4096 bytes */ #define MMU_PAGESHIFT 12 /* log2(MMU_PAGESIZE) */ #define MMU_PAGEOFFSET (MMU_PAGESIZE-1) /* Mask of address bits in page */ #define MMU_PAGEMASK (~MMU_PAGEOFFSET) #define PAGESIZE 0x1000 /* All of the above, for logical */ #define PAGESHIFT 12 #define PAGEOFFSET (PAGESIZE - 1) #define PAGEMASK (~PAGEOFFSET) /* * DATA_ALIGN is used to define the alignment of the Unix data segment. */ #define DATA_ALIGN PAGESIZE /* * DEFAULT KERNEL THREAD stack size. */ #if defined(__amd64) #define DEFAULTSTKSZ (5 * PAGESIZE) #elif defined(__i386) #define DEFAULTSTKSZ (2 * PAGESIZE) #endif /* * KERNELBASE is the virtual address at which the kernel segments start in * all contexts. * * KERNELBASE is not fixed on 32-bit systems. The value of KERNELBASE can * change with installed memory and the eprom variable 'eprom_kernelbase'. * This value is fixed on 64-bit systems. * * common/conf/param.c requires a compile time defined value for KERNELBASE * which it saves in the variable _kernelbase. If kernelbase is modifed on * a 32-bit system, _kernelbase will be updated with the new value in * i86pc/os/startup.c. * * i86 and i86pc files use kernelbase instead of KERNELBASE, which is * initialized in i86pc/os/startup.c. */ #if defined(__amd64) #define KERNELBASE ADDRESS_C(0xfffffd8000000000) /* * Size of the unmapped "red zone" at the very bottom of the kernel's * address space. Corresponds to 1 slot in the toplevel pagetable. */ #define KERNEL_REDZONE_SIZE ((uintptr_t)1 << 39) /* * Base of 'core' heap area, which is used for kernel and module text/data * that must be within a 2GB range to allow for rip-relative addressing. * * XX64: because vmx and boot cannot be trusted to stay in a 1GB playpen at * the bottom of the upper 4GB range, we need to restrict the core heap to * the top 1GB for now. */ #define COREHEAP_BASE ADDRESS_C(0xffffffffc0000000) /* * Beginning of the segkpm window */ #define SEGKPM_BASE ADDRESS_C(0xfffffe0000000000) /* * default and boundary sizes for segkp */ #define SEGKPDEFSIZE (2L * 1024L * 1024L * 1024L) /* 2G */ #define SEGKPMAXSIZE (8L * 1024L * 1024L * 1024L) /* 8G */ #define SEGKPMINSIZE (200L * 1024 * 1024L) /* 200M */ /* * Boot (or, more precisely, vmx) maps most pages twice - once in the * bottom 2GB of memory and once in the bottom 2GB of the topmost 4GB. * When boot is unmapped this range is available to the kernel, but until * then we have to leave it untouched. */ #define BOOT_DOUBLEMAP_BASE ADDRESS_C(0xffffffff00000000) #define BOOT_DOUBLEMAP_SIZE ADDRESS_C(0x80000000) /* * VMWare works best if we don't use the top 64Meg of memory for amd64. * Set KERNEL_TEXT to top_o_memory - 64Meg - 8 Meg for 8Meg of nucleus pages. */ #define PROMSTART ADDRESS_C(0xffc00000) #define KERNEL_TEXT ADDRESS_C(0xfffffffffb800000) /* * Define upper limit on user address space * * In amd64, the upper limit on a 64-bit user address space is 1 large page * (2MB) below kernelbase. The upper limit for a 32-bit user address space * is 1 small page (4KB) below the top of the 32-bit range. The 64-bit * limit give dtrace the red zone it needs below kernelbase. The 32-bit * limit gives us a small red zone to detect address-space overruns in a * user program. */ #define USERLIMIT ADDRESS_C(0xfffffd7fffe00000) #ifdef bug_5074717_is_fixed #define USERLIMIT32 ADDRESS_C(0xfffff000) #else #define USERLIMIT32 ADDRESS_C(0xfefff000) #endif #elif defined(__i386) #ifdef DEBUG #define KERNELBASE ADDRESS_C(0xc8000000) #else #define KERNELBASE ADDRESS_C(0xd4000000) #endif #define KERNELBASE_MAX ADDRESS_C(0xe0000000) /* * The i386 ABI requires that the user address space be at least 3Gb * in size. KERNELBASE_ABI_MIN is used as the default KERNELBASE for * physical memory configurations > 4gb. */ #define KERNELBASE_ABI_MIN ADDRESS_C(0xc0000000) /* * Size of the unmapped "red zone" at the very bottom of the kernel's * address space. Since segmap start immediately above the red zone, this * needs to be MAXBSIZE aligned. */ #define KERNEL_REDZONE_SIZE MAXBSIZE /* * This is the last 4MB of the 4G address space. Some psm modules * need this region of virtual address space mapped 1-1 */ #define PROMSTART ADDRESS_C(0xffc00000) #define KERNEL_TEXT ADDRESS_C(0xfe800000) /* * Define upper limit on user address space */ #define USERLIMIT KERNELBASE #define USERLIMIT32 USERLIMIT #endif /* __i386 */ #if !defined(_KADB) extern uintptr_t kernelbase, segkmap_start, segmapsize; #endif /* * ARGSBASE is the base virtual address of the range which * the kernel uses to map the arguments for exec. */ #define ARGSBASE PROMSTART /* * reserve space for modules */ #define MODTEXT (1024 * 1024 * 2) #define MODDATA (1024 * 300) /* * The heap has a region allocated from it of HEAPTEXT_SIZE bytes specifically * for module text. */ #define HEAPTEXT_SIZE (64 * 1024 * 1024) /* bytes */ /* * Size of a kernel threads stack. It must be a whole number of pages * since the segment it comes from will only allocate space in pages. */ #define T_STACKSZ 2*PAGESIZE /* * Size of a cpu startup thread stack. (It must be a whole number of pages * since the containing segment only allocates space in pages.) */ #define STARTUP_STKSZ 3*PAGESIZE /* * Bus types */ #define BTISA 1 #define BTEISA 2 #define BTMCA 3 #ifdef __cplusplus } #endif #endif /* _SYS_MACHPARAM_H */