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Diffstat (limited to 'include/asm-parisc/fixmap.h')
| -rw-r--r-- | include/asm-parisc/fixmap.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/asm-parisc/fixmap.h b/include/asm-parisc/fixmap.h new file mode 100644 index 00000000000..a5caf4b122b --- /dev/null +++ b/include/asm-parisc/fixmap.h @@ -0,0 +1,23 @@ +#ifndef _ASM_FIXMAP_H +#define _ASM_FIXMAP_H + +/* + * This file defines the locations of the fixed mappings on parisc. + * + * All of the values in this file are machine virtual addresses. + * + * All of the values in this file must be <4GB (because of assembly + * loading restrictions). If you place this region anywhere above + * __PAGE_OFFSET, you must adjust the memory map accordingly */ + +/* The alias region is used in kernel space to do copy/clear to or + * from areas congruently mapped with user space. It is 8MB large + * and must be 16MB aligned */ +#define TMPALIAS_MAP_START ((__PAGE_OFFSET) - 16*1024*1024) +/* This is the kernel area for all maps (vmalloc, dma etc.) most + * usually, it extends up to TMPALIAS_MAP_START. Virtual addresses + * 0..GATEWAY_PAGE_SIZE are reserved for the gateway page */ +#define KERNEL_MAP_START (GATEWAY_PAGE_SIZE) +#define KERNEL_MAP_END (TMPALIAS_MAP_START) + +#endif |