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12eab86f39
different translation entries described within the OF platform bindings. With thanks to Andreas Färber and Igor Kovalenko. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@siriusit.co.uk> git-svn-id: svn://coreboot.org/openbios/trunk/openbios-devel@772 f158a5a8-5612-0410-a976-696ce0be7e32
140 lines
3.9 KiB
C
140 lines
3.9 KiB
C
/*
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* Creation Date: <1999/11/16 00:47:06 samuel>
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* Time-stamp: <2003/10/18 13:28:14 samuel>
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*
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* <ofmem.h>
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*
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*
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*
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* Copyright (C) 1999, 2002 Samuel Rydh (samuel@ibrium.se)
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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
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*
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*/
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#ifndef _H_OFMEM
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#define _H_OFMEM
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#include "kernel/stack.h"
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typedef struct alloc_desc {
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struct alloc_desc *next;
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ucell size; /* size (including) this struct */
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} alloc_desc_t;
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typedef struct mem_range {
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struct mem_range *next;
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ucell start;
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ucell size;
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} range_t;
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typedef struct trans {
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struct trans *next;
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ucell virt; /* chain is sorted by virt */
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ucell size;
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ucell phys;
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ucell mode;
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} translation_t;
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/* ofmem private data */
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typedef struct {
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ucell ramsize;
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char *next_malloc;
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alloc_desc_t *mfree; /* list of free malloc blocks */
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range_t *phys_range;
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range_t *virt_range;
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translation_t *trans; /* this is really a translation_t */
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} ofmem_t;
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/* structure for retained data */
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typedef struct {
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ucell magic;
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ucell numentries;
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range_t retain_phys_range[8]; /* physical memory that should survive a warm reset */
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} retain_t;
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/* TODO: temporary migration interface */
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extern ofmem_t* ofmem_arch_get_private(void);
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extern void* ofmem_arch_get_malloc_base(void);
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extern ucell ofmem_arch_get_heap_top(void);
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extern ucell ofmem_arch_get_virt_top(void);
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extern retain_t* ofmem_arch_get_retained(void);
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extern int ofmem_arch_get_translation_entry_size(void);
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extern void ofmem_arch_create_translation_entry(ucell *transentry, translation_t *t);
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extern ucell ofmem_arch_default_translation_mode( ucell phys );
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extern void ofmem_arch_early_map_pages(ucell phys, ucell virt, ucell size,
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ucell mode);
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extern void ofmem_arch_unmap_pages(ucell virt, ucell size);
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/* sparc64 uses this method */
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extern int ofmem_map_page_range( ucell phys, ucell virt, ucell size,
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ucell mode );
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/* malloc interface */
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extern void* ofmem_malloc( size_t size );
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extern void ofmem_free( void *ptr );
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extern void* ofmem_realloc( void *ptr, size_t size );
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/* ofmem_common.c */
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extern void ofmem_cleanup( void );
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extern void ofmem_init( void );
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/*
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* register /memory and /virtual-memory handles
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* ofmem module will update "available" and "translations" properties
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* using these handles
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*
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* to disable updating /memory properties pass zero memory handle
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*/
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extern void ofmem_register( phandle_t ph_memory, phandle_t ph_mmu );
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extern ucell ofmem_claim( ucell addr, ucell size, ucell align );
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extern ucell ofmem_claim_phys( ucell mphys, ucell size, ucell align );
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extern ucell ofmem_claim_virt( ucell mvirt, ucell size, ucell align );
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extern ucell ofmem_retain( ucell phys, ucell size, ucell align );
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extern int ofmem_map( ucell phys, ucell virt, ucell size, ucell mode );
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extern int ofmem_unmap( ucell virt, ucell size );
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extern void ofmem_release_phys( ucell phys, ucell size );
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extern void ofmem_release_virt( ucell virt, ucell size );
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extern ucell ofmem_translate( ucell virt, ucell *ret_mode );
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#ifdef CONFIG_PPC
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#define PAGE_SHIFT 12
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ulong get_ram_top( void );
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ulong get_ram_bottom( void );
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#elif defined(CONFIG_SPARC32)
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#define PAGE_SHIFT 12
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/* arch/sparc32/lib.c */
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struct mem;
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extern struct mem cdvmem;
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void mem_init(struct mem *t, char *begin, char *limit);
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void *mem_alloc(struct mem *t, int size, int align);
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int map_page(unsigned long va, uint64_t epa, int type);
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void *map_io(uint64_t pa, int size);
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#endif
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#ifdef PAGE_SHIFT
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#define PAGE_SIZE (1 << PAGE_SHIFT)
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#define PAGE_MASK (~(PAGE_SIZE - 1))
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#define PAGE_ALIGN(addr) (((addr) + PAGE_SIZE - 1) & PAGE_MASK)
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#endif
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#if defined(CONFIG_DEBUG_OFMEM)
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# define OFMEM_TRACE(fmt, ...) do { printk("OFMEM: " fmt, ## __VA_ARGS__); } while (0)
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#else
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# define OFMEM_TRACE(fmt, ...) do {} while(0)
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#endif
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#endif /* _H_OFMEM */
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