2 * Declarations of procedures and variables shared between files
5 * Derived from arch/ppc/mm/init.c:
6 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
8 * Modifications by Paul Mackerras (PowerMac) (paulus@cs.anu.edu.au)
9 * and Cort Dougan (PReP) (cort@cs.nmt.edu)
10 * Copyright (C) 1996 Paul Mackerras
12 * Derived from "arch/i386/mm/init.c"
13 * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation; either version
18 * 2 of the License, or (at your option) any later version.
22 #include <asm/tlbflush.h>
25 extern void hash_preload(struct mm_struct
*mm
, unsigned long ea
,
26 unsigned long access
, unsigned long trap
);
30 extern void mapin_ram(void);
31 extern int map_page(unsigned long va
, phys_addr_t pa
, int flags
);
32 extern void setbat(int index
, unsigned long virt
, phys_addr_t phys
,
33 unsigned int size
, int flags
);
34 extern void settlbcam(int index
, unsigned long virt
, phys_addr_t phys
,
35 unsigned int size
, int flags
, unsigned int pid
);
36 extern void invalidate_tlbcam_entry(int index
);
38 extern int __map_without_bats
;
39 extern unsigned long ioremap_base
;
40 extern unsigned int rtas_data
, rtas_size
;
43 extern struct hash_pte
*Hash
, *Hash_end
;
44 extern unsigned long Hash_size
, Hash_mask
;
46 extern unsigned int num_tlbcam_entries
;
49 extern unsigned long ioremap_bot
;
50 extern unsigned long __max_low_memory
;
51 extern phys_addr_t __initial_memory_limit_addr
;
52 extern phys_addr_t total_memory
;
53 extern phys_addr_t total_lowmem
;
54 extern phys_addr_t memstart_addr
;
55 extern phys_addr_t lowmem_end_addr
;
57 /* ...and now those things that may be slightly different between processor
58 * architectures. -- Dan
60 #if defined(CONFIG_8xx)
61 #define MMU_init_hw() do { } while(0)
62 #define mmu_mapin_ram() (0UL)
64 #elif defined(CONFIG_4xx)
65 extern void MMU_init_hw(void);
66 extern unsigned long mmu_mapin_ram(void);
68 #elif defined(CONFIG_FSL_BOOKE)
69 extern void MMU_init_hw(void);
70 extern unsigned long mmu_mapin_ram(void);
71 extern void adjust_total_lowmem(void);
73 #elif defined(CONFIG_PPC32)
74 /* anything 32-bit except 4xx or 8xx */
75 extern void MMU_init_hw(void);
76 extern unsigned long mmu_mapin_ram(void);