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| 2 | |
| 3 | * Copyright (C) 2012 ARM Ltd.
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| 4 |
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| 5 | #ifndef __ASM_SPARSEMEM_H
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| 6 | #define __ASM_SPARSEMEM_H
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| 7 |
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| 8 | #include <asm/pgtable-prot.h>
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| 9 |
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| 10 | #define MAX_PHYSMEM_BITS PHYS_MASK_SHIFT
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| 11 | #define MAX_POSSIBLE_PHYSMEM_BITS (52)
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| 12 |
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| 13 | |
| 14 | * Section size must be at least 512MB for 64K base
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| 15 | * page size config. Otherwise it will be less than
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| 16 | * MAX_PAGE_ORDER and the build process will fail.
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| 17 |
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| 18 | #ifdef CONFIG_ARM64_64K_PAGES
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| 19 | #define SECTION_SIZE_BITS 29
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| 20 |
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| 21 | #else
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| 22 |
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| 23 | |
| 24 | * Section size must be at least 128MB for 4K base
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| 25 | * page size config. Otherwise PMD based huge page
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| 26 | * entries could not be created for vmemmap mappings.
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| 27 | * 16K follows 4K for simplicity.
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| 28 |
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| 29 | #define SECTION_SIZE_BITS 27
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| 30 | #endif
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| 31 |
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| 32 | #endif
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