projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * File created by Kanoj Sarcar 06/06/00. | |
| 3 | * Copyright 2000 Silicon Graphics, Inc. | |
| 4 | */ | |
| 5 | #ifndef __ASM_SN_MAPPED_KERNEL_H | |
| 6 | #define __ASM_SN_MAPPED_KERNEL_H | |
| 7 | ||
| fd3d2764 RB |
8 | #include <linux/mmzone.h> |
| 9 | ||
| 1da177e4 LT |
10 | /* |
| 11 | * Note on how mapped kernels work: the text and data section is | |
| 12 | * compiled at cksseg segment (LOADADDR = 0xc001c000), and the | |
| 13 | * init/setup/data section gets a 16M virtual address bump in the | |
| 14 | * ld.script file (so that tlblo0 and tlblo1 maps the sections). | |
| 15 | * The vmlinux.64 section addresses are put in the xkseg range | |
| 16 | * using the change-addresses makefile option. Use elfdump -of | |
| 17 | * on IRIX to see where the sections go. The Origin loader loads | |
| 18 | * the two sections contiguously in physical memory. The loader | |
| 19 | * sets the entry point into kernel_entry using a xkphys address, | |
| 20 | * but instead of using 0xa800000001160000, it uses the address | |
| 21 | * 0xa800000000160000, which is where it physically loaded that | |
| 22 | * code. So no jumps can be done before we have switched to using | |
| 23 | * cksseg addresses. | |
| 24 | */ | |
| 1da177e4 LT |
25 | #include <asm/addrspace.h> |
| 26 | ||
| 1da177e4 | 27 | #define REP_BASE CAC_BASE |
| 1da177e4 LT |
28 | |
| 29 | #ifdef CONFIG_MAPPED_KERNEL | |
| 30 | ||
| 31 | #define MAPPED_ADDR_RO_TO_PHYS(x) (x - REP_BASE) | |
| 32 | #define MAPPED_ADDR_RW_TO_PHYS(x) (x - REP_BASE - 16777216) | |
| 33 | ||
| fd3d2764 RB |
34 | #define MAPPED_KERN_RO_PHYSBASE(n) (hub_data(n)->kern_vars.kv_ro_baseaddr) |
| 35 | #define MAPPED_KERN_RW_PHYSBASE(n) (hub_data(n)->kern_vars.kv_rw_baseaddr) | |
| 1da177e4 LT |
36 | |
| 37 | #define MAPPED_KERN_RO_TO_PHYS(x) \ | |
| 38 | ((unsigned long)MAPPED_ADDR_RO_TO_PHYS(x) | \ | |
| 39 | MAPPED_KERN_RO_PHYSBASE(get_compact_nodeid())) | |
| 40 | #define MAPPED_KERN_RW_TO_PHYS(x) \ | |
| 41 | ((unsigned long)MAPPED_ADDR_RW_TO_PHYS(x) | \ | |
| 42 | MAPPED_KERN_RW_PHYSBASE(get_compact_nodeid())) | |
| 43 | ||
| 44 | #else /* CONFIG_MAPPED_KERNEL */ | |
| 45 | ||
| 46 | #define MAPPED_KERN_RO_TO_PHYS(x) (x - REP_BASE) | |
| 47 | #define MAPPED_KERN_RW_TO_PHYS(x) (x - REP_BASE) | |
| 48 | ||
| 49 | #endif /* CONFIG_MAPPED_KERNEL */ | |
| 50 | ||
| 70342287 RB |
51 | #define MAPPED_KERN_RO_TO_K0(x) PHYS_TO_K0(MAPPED_KERN_RO_TO_PHYS(x)) |
| 52 | #define MAPPED_KERN_RW_TO_K0(x) PHYS_TO_K0(MAPPED_KERN_RW_TO_PHYS(x)) | |
| 1da177e4 LT |
53 | |
| 54 | #endif /* __ASM_SN_MAPPED_KERNEL_H */ |