diff options
Diffstat (limited to 'include/asm-powerpc/sparsemem.h')
| -rw-r--r-- | include/asm-powerpc/sparsemem.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/asm-powerpc/sparsemem.h b/include/asm-powerpc/sparsemem.h new file mode 100644 index 000000000000..ba1b34fdb967 --- /dev/null +++ b/include/asm-powerpc/sparsemem.h @@ -0,0 +1,20 @@ +#ifndef _ASM_POWERPC_SPARSEMEM_H +#define _ASM_POWERPC_SPARSEMEM_H 1 + +#ifdef CONFIG_SPARSEMEM +/* + * SECTION_SIZE_BITS 2^N: how big each section will be + * MAX_PHYSADDR_BITS 2^N: how much physical address space we have + * MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space + */ +#define SECTION_SIZE_BITS 24 +#define MAX_PHYSADDR_BITS 44 +#define MAX_PHYSMEM_BITS 44 + +#ifdef CONFIG_MEMORY_HOTPLUG +extern void create_section_mapping(unsigned long start, unsigned long end); +#endif /* CONFIG_MEMORY_HOTPLUG */ + +#endif /* CONFIG_SPARSEMEM */ + +#endif /* _ASM_POWERPC_SPARSEMEM_H */ |