| David Gibson | 1fc8b4e | 2005-11-02 14:48:36 +1100 | [diff] [blame] | 1 | #ifndef _ASM_POWERPC_SPARSEMEM_H |
| 2 | #define _ASM_POWERPC_SPARSEMEM_H 1 |
| Andy Whitcroft | 145e664 | 2005-06-23 00:08:03 -0700 | [diff] [blame] | 3 | |
| 4 | #ifdef CONFIG_SPARSEMEM |
| 5 | /* |
| 6 | * SECTION_SIZE_BITS 2^N: how big each section will be |
| 7 | * MAX_PHYSADDR_BITS 2^N: how much physical address space we have |
| 8 | * MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space |
| 9 | */ |
| 10 | #define SECTION_SIZE_BITS 24 |
| 11 | #define MAX_PHYSADDR_BITS 38 |
| 12 | #define MAX_PHYSMEM_BITS 36 |
| 13 | |
| Mike Kravetz | 54b7924 | 2005-11-07 16:25:48 -0800 | [diff] [blame^] | 14 | #ifdef CONFIG_MEMORY_HOTPLUG |
| 15 | extern void create_section_mapping(unsigned long start, unsigned long end); |
| 16 | #endif /* CONFIG_MEMORY_HOTPLUG */ |
| 17 | |
| Andy Whitcroft | 145e664 | 2005-06-23 00:08:03 -0700 | [diff] [blame] | 18 | #endif /* CONFIG_SPARSEMEM */ |
| 19 | |
| David Gibson | 1fc8b4e | 2005-11-02 14:48:36 +1100 | [diff] [blame] | 20 | #endif /* _ASM_POWERPC_SPARSEMEM_H */ |