projects / people / arne_f / kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 1da177e4 LT |
2 | #ifndef _SPARC_VADDRS_H |
| 3 | #define _SPARC_VADDRS_H | |
| 4 | ||
| 5 | #include <asm/head.h> | |
| 6 | ||
| 7 | /* | |
| a439fe51 | 8 | * asm/vaddrs.h: Here we define the virtual addresses at |
| 1da177e4 LT |
9 | * which important things will be mapped. |
| 10 | * | |
| 11 | * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) | |
| 12 | * Copyright (C) 2000 Anton Blanchard (anton@samba.org) | |
| 13 | */ | |
| 14 | ||
| 15 | #define SRMMU_MAXMEM 0x0c000000 | |
| 16 | ||
| 17 | #define SRMMU_NOCACHE_VADDR (KERNBASE + SRMMU_MAXMEM) | |
| 18 | /* = 0x0fc000000 */ | |
| 19 | /* XXX Empiricals - this needs to go away - KMW */ | |
| 20 | #define SRMMU_MIN_NOCACHE_PAGES (550) | |
| 21 | #define SRMMU_MAX_NOCACHE_PAGES (1280) | |
| 22 | ||
| 23 | /* The following constant is used in mm/srmmu.c::srmmu_nocache_calcsize() | |
| 24 | * to determine the amount of memory that will be reserved as nocache: | |
| 25 | * | |
| 26 | * 256 pages will be taken as nocache per each | |
| 27 | * SRMMU_NOCACHE_ALCRATIO MB of system memory. | |
| 28 | * | |
| 29 | * limits enforced: nocache minimum = 256 pages | |
| 30 | * nocache maximum = 1280 pages | |
| 31 | */ | |
| 32 | #define SRMMU_NOCACHE_ALCRATIO 64 /* 256 pages per 64MB of system RAM */ | |
| 33 | ||
| 1b6d06d8 SR |
34 | #ifndef __ASSEMBLY__ |
| 35 | #include <asm/kmap_types.h> | |
| 36 | ||
| 37 | enum fixed_addresses { | |
| 38 | FIX_HOLE, | |
| 39 | #ifdef CONFIG_HIGHMEM | |
| 40 | FIX_KMAP_BEGIN, | |
| 41 | FIX_KMAP_END = (KM_TYPE_NR * NR_CPUS), | |
| 42 | #endif | |
| 43 | __end_of_fixed_addresses | |
| 44 | }; | |
| 45 | #endif | |
| 46 | ||
| 47 | /* Leave one empty page between IO pages at 0xfd000000 and | |
| 48 | * the top of the fixmap. | |
| 49 | */ | |
| 50 | #define FIXADDR_TOP (0xfcfff000UL) | |
| 51 | #define FIXADDR_SIZE ((FIX_KMAP_END + 1) << PAGE_SHIFT) | |
| 52 | #define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE) | |
| 53 | ||
| 54 | #define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT)) | |
| 55 | ||
| 1da177e4 LT |
56 | #define SUN4M_IOBASE_VADDR 0xfd000000 /* Base for mapping pages */ |
| 57 | #define IOBASE_VADDR 0xfe000000 | |
| 58 | #define IOBASE_END 0xfe600000 | |
| 59 | ||
| 1da177e4 LT |
60 | #define KADB_DEBUGGER_BEGVM 0xffc00000 /* Where kern debugger is in virt-mem */ |
| 61 | #define KADB_DEBUGGER_ENDVM 0xffd00000 | |
| 62 | #define DEBUG_FIRSTVADDR KADB_DEBUGGER_BEGVM | |
| 63 | #define DEBUG_LASTVADDR KADB_DEBUGGER_ENDVM | |
| 64 | ||
| 65 | #define LINUX_OPPROM_BEGVM 0xffd00000 | |
| 66 | #define LINUX_OPPROM_ENDVM 0xfff00000 | |
| 67 | ||
| 68 | #define DVMA_VADDR 0xfff00000 /* Base area of the DVMA on suns */ | |
| 69 | #define DVMA_END 0xfffc0000 | |
| 70 | ||
| 71 | #endif /* !(_SPARC_VADDRS_H) */ |