| #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 38 |
| #define MAX_PHYSMEM_BITS 36 |
| |
| #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 */ |