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30 lines
895 B
30 lines
895 B
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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#ifndef _PPC_BOOT_PAGE_H |
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#define _PPC_BOOT_PAGE_H |
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/* |
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* Copyright (C) 2001 PPC64 Team, IBM Corp |
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*/ |
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#ifdef __ASSEMBLY__ |
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#define ASM_CONST(x) x |
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#else |
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#define __ASM_CONST(x) x##UL |
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#define ASM_CONST(x) __ASM_CONST(x) |
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#endif |
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/* PAGE_SHIFT determines the page size */ |
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#define PAGE_SHIFT 12 |
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#define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT) |
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#define PAGE_MASK (~(PAGE_SIZE-1)) |
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/* align addr on a size boundary - adjust address up/down if needed */ |
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#define _ALIGN_UP(addr, size) (((addr)+((size)-1))&(~((typeof(addr))(size)-1))) |
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#define _ALIGN_DOWN(addr, size) ((addr)&(~((typeof(addr))(size)-1))) |
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/* align addr on a size boundary - adjust address up if needed */ |
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#define _ALIGN(addr,size) _ALIGN_UP(addr,size) |
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/* to align the pointer to the (next) page boundary */ |
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#define PAGE_ALIGN(addr) _ALIGN(addr, PAGE_SIZE) |
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#endif /* _PPC_BOOT_PAGE_H */
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