1 #ifndef ASMARM_SPARSEMEM_H 2 #define ASMARM_SPARSEMEM_H 3 4 #include <asm/memory.h> 5 6 /* 7 * Two definitions are required for sparsemem: 8 * 9 * MAX_PHYSMEM_BITS: The number of physical address bits required 10 * to address the last byte of memory. 11 * 12 * SECTION_SIZE_BITS: The number of physical address bits to cover 13 * the maximum amount of memory in a section. 14 * 15 * Eg, if you have 2 banks of up to 64MB at 0x80000000, 0x84000000, 16 * then MAX_PHYSMEM_BITS is 32, SECTION_SIZE_BITS is 26. 17 * 18 * Define these in your mach/memory.h. 19 */ 20 #if !defined(SECTION_SIZE_BITS) || !defined(MAX_PHYSMEM_BITS) 21 #error Sparsemem is not supported on this platform 22 #endif 23 24 #endif 25