1 #ifndef _SPARC_VADDRS_H 2 #define _SPARC_VADDRS_H 3 4 #include <asm/head.h> 5 6 /* 7 * asm/vaddrs.h: Here we define the virtual addresses at 8 * which important things will be mapped. 9 * 10 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) 11 * Copyright (C) 2000 Anton Blanchard (anton@samba.org) 12 */ 13 14 #define SRMMU_MAXMEM 0x0c000000 15 16 #define SRMMU_NOCACHE_VADDR (KERNBASE + SRMMU_MAXMEM) 17 /* = 0x0fc000000 */ 18 /* XXX Empiricals - this needs to go away - KMW */ 19 #define SRMMU_MIN_NOCACHE_PAGES (550) 20 #define SRMMU_MAX_NOCACHE_PAGES (1280) 21 22 /* The following constant is used in mm/srmmu.c::srmmu_nocache_calcsize() 23 * to determine the amount of memory that will be reserved as nocache: 24 * 25 * 256 pages will be taken as nocache per each 26 * SRMMU_NOCACHE_ALCRATIO MB of system memory. 27 * 28 * limits enforced: nocache minimum = 256 pages 29 * nocache maximum = 1280 pages 30 */ 31 #define SRMMU_NOCACHE_ALCRATIO 64 /* 256 pages per 64MB of system RAM */ 32 33 #define SUN4M_IOBASE_VADDR 0xfd000000 /* Base for mapping pages */ 34 #define IOBASE_VADDR 0xfe000000 35 #define IOBASE_END 0xfe600000 36 37 #define KADB_DEBUGGER_BEGVM 0xffc00000 /* Where kern debugger is in virt-mem */ 38 #define KADB_DEBUGGER_ENDVM 0xffd00000 39 #define DEBUG_FIRSTVADDR KADB_DEBUGGER_BEGVM 40 #define DEBUG_LASTVADDR KADB_DEBUGGER_ENDVM 41 42 #define LINUX_OPPROM_BEGVM 0xffd00000 43 #define LINUX_OPPROM_ENDVM 0xfff00000 44 45 #define DVMA_VADDR 0xfff00000 /* Base area of the DVMA on suns */ 46 #define DVMA_END 0xfffc0000 47 48 #endif /* !(_SPARC_VADDRS_H) */ 49