| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef ASMARM_SPARSEMEM_H |
| #define ASMARM_SPARSEMEM_H |
| |
| #include <asm/page.h> |
| |
| /* |
| * Two definitions are required for sparsemem: |
| * |
| * MAX_PHYSMEM_BITS: The number of physical address bits required |
| * to address the last byte of memory. |
| * |
| * SECTION_SIZE_BITS: The number of physical address bits to cover |
| * the maximum amount of memory in a section. |
| * |
| * Eg, if you have 2 banks of up to 64MB at 0x80000000, 0x84000000, |
| * then MAX_PHYSMEM_BITS is 32, SECTION_SIZE_BITS is 26. |
| * |
| * These can be overridden in your mach/memory.h. |
| */ |
| #if !defined(MAX_PHYSMEM_BITS) || !defined(SECTION_SIZE_BITS) |
| #define MAX_PHYSMEM_BITS 36 |
| #define SECTION_SIZE_BITS 28 |
| #endif |
| |
| #endif |
