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4ed6552f71
Introduce the LMB lib used on PPC in the kernel as a clean way to manage the memory spaces used by various boot images and structures. This code will allow us to simplify the code in bootm and its support functions. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
#ifndef _LINUX_LMB_H
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#define _LINUX_LMB_H
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#ifdef __KERNEL__
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#include <asm/types.h>
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/*
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* Logical memory blocks.
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*
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* Copyright (C) 2001 Peter Bergner, IBM Corp.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#define MAX_LMB_REGIONS 8
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struct lmb_property {
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ulong base;
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ulong size;
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};
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struct lmb_region {
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unsigned long cnt;
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ulong size;
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struct lmb_property region[MAX_LMB_REGIONS+1];
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};
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struct lmb {
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struct lmb_region memory;
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struct lmb_region reserved;
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};
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extern struct lmb lmb;
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extern void lmb_init(struct lmb *lmb);
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extern long lmb_add(struct lmb *lmb, ulong base, ulong size);
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extern long lmb_reserve(struct lmb *lmb, ulong base, ulong size);
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extern ulong lmb_alloc(struct lmb *lmb, ulong size, ulong align);
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extern ulong lmb_alloc_base(struct lmb *lmb, ulong size, ulong align, ulong max_addr);
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extern ulong __lmb_alloc_base(struct lmb *lmb, ulong size, ulong align, ulong max_addr);
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extern int lmb_is_reserved(struct lmb *lmb, ulong addr);
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extern void lmb_dump_all(struct lmb *lmb);
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static inline ulong
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lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
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{
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return type->region[region_nr].size;
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}
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#endif /* __KERNEL__ */
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#endif /* _LINUX_LMB_H */
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