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
11 * Amiga/APUS changes by Jesper Skov (jskov@cygnus.co.uk).
13 * Derived from "arch/i386/mm/init.c"
14 * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds
16 * This program is free software; you can redistribute it and/or
17 * modify it under the terms of the GNU General Public License
18 * as published by the Free Software Foundation; either version
19 * 2 of the License, or (at your option) any later version.
23 #include <asm/pgtable.h>
26 extern void mapin_ram(void);
27 extern void bat_mapin_ram(unsigned long bat2, unsigned long bat3);
28 extern void adjust_total_lowmem(void);
29 extern int map_page(unsigned long va, phys_addr_t pa, int flags);
30 extern void setbat(int index, unsigned long virt, unsigned long phys,
31 unsigned int size, int flags);
32 extern void reserve_phys_mem(unsigned long start, unsigned long size);
34 extern int __map_without_bats;
35 extern unsigned long ioremap_base;
36 extern unsigned long ioremap_bot;
37 extern unsigned int rtas_data, rtas_size;
39 extern unsigned long total_memory;
40 extern unsigned long total_lowmem;
41 extern int mem_init_done;
43 /* ...and now those things that may be slightly different between processor
44 * architectures. -- Dan
46 #if defined(CONFIG_8xx)
47 #define flush_HPTE(X, va, pg) _tlbie(va)
48 #define MMU_init_hw() do { } while(0)
50 #elif defined(CONFIG_4xx)
51 #define flush_HPTE(X, va, pg) _tlbie(va)
52 extern void MMU_init_hw(void);
55 /* anything except 4xx or 8xx */
56 extern void MMU_init_hw(void);
58 /* Be careful....this needs to be updated if we ever encounter 603 SMPs,
59 * which includes all new 82xx processors. We need tlbie/tlbsync here
60 * in that case (I think). -- Dan.
62 static inline void flush_HPTE(unsigned context, unsigned long va, pte_t *pg)
65 (cur_cpu_spec[0]->cpu_features & CPU_FTR_HPTE_TABLE))
66 flush_hash_page(0, va, pg);