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-rw-r--r--arch/ppc/mm/44x_mmu.c101
1 files changed, 0 insertions, 101 deletions
diff --git a/arch/ppc/mm/44x_mmu.c b/arch/ppc/mm/44x_mmu.c
deleted file mode 100644
index fbb577a0d16..00000000000
--- a/arch/ppc/mm/44x_mmu.c
+++ /dev/null
@@ -1,101 +0,0 @@
1/*
2 * Modifications by Matt Porter (mporter@mvista.com) to support
3 * PPC44x Book E processors.
4 *
5 * This file contains the routines for initializing the MMU
6 * on the 4xx series of chips.
7 * -- paulus
8 *
9 * Derived from arch/ppc/mm/init.c:
10 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
11 *
12 * Modifications by Paul Mackerras (PowerMac) (paulus@cs.anu.edu.au)
13 * and Cort Dougan (PReP) (cort@cs.nmt.edu)
14 * Copyright (C) 1996 Paul Mackerras
15 * Amiga/APUS changes by Jesper Skov (jskov@cygnus.co.uk).
16 *
17 * Derived from "arch/i386/mm/init.c"
18 * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds
19 *
20 * This program is free software; you can redistribute it and/or
21 * modify it under the terms of the GNU General Public License
22 * as published by the Free Software Foundation; either version
23 * 2 of the License, or (at your option) any later version.
24 *
25 */
26
27#include <linux/signal.h>
28#include <linux/sched.h>
29#include <linux/kernel.h>
30#include <linux/errno.h>
31#include <linux/string.h>
32#include <linux/types.h>
33#include <linux/ptrace.h>
34#include <linux/mman.h>
35#include <linux/mm.h>
36#include <linux/swap.h>
37#include <linux/stddef.h>
38#include <linux/vmalloc.h>
39#include <linux/init.h>
40#include <linux/delay.h>
41#include <linux/highmem.h>
42
43#include <asm/pgalloc.h>
44#include <asm/prom.h>
45#include <asm/io.h>
46#include <asm/mmu_context.h>
47#include <asm/pgtable.h>
48#include <asm/mmu.h>
49#include <asm/uaccess.h>
50#include <asm/smp.h>
51#include <asm/bootx.h>
52#include <asm/machdep.h>
53#include <asm/setup.h>
54
55#include "mmu_decl.h"
56
57extern char etext[], _stext[];
58
59/* Used by the 44x TLB replacement exception handler.
60 * Just needed it declared someplace.
61 */
62unsigned int tlb_44x_index = 0;
63unsigned int tlb_44x_hwater = PPC4XX_TLB_SIZE - 1 - PPC44x_EARLY_TLBS;
64int icache_44x_need_flush;
65
66/*
67 * "Pins" a 256MB TLB entry in AS0 for kernel lowmem
68 */
69static void __init ppc44x_pin_tlb(unsigned int virt, unsigned int phys)
70{
71 __asm__ __volatile__(
72 "tlbwe %2,%3,%4\n"
73 "tlbwe %1,%3,%5\n"
74 "tlbwe %0,%3,%6\n"
75 :
76 : "r" (PPC44x_TLB_SW | PPC44x_TLB_SR | PPC44x_TLB_SX | PPC44x_TLB_G),
77 "r" (phys),
78 "r" (virt | PPC44x_TLB_VALID | PPC44x_TLB_256M),
79 "r" (tlb_44x_hwater--), /* slot for this TLB entry */
80 "i" (PPC44x_TLB_PAGEID),
81 "i" (PPC44x_TLB_XLAT),
82 "i" (PPC44x_TLB_ATTRIB));
83}
84
85void __init MMU_init_hw(void)
86{
87 flush_instruction_cache();
88}
89
90unsigned long __init mmu_mapin_ram(void)
91{
92 unsigned long addr;
93
94 /* Pin in enough TLBs to cover any lowmem not covered by the
95 * initial 256M mapping established in head_44x.S */
96 for (addr = PPC_PIN_SIZE; addr < total_lowmem;
97 addr += PPC_PIN_SIZE)
98 ppc44x_pin_tlb(addr + PAGE_OFFSET, addr);
99
100 return total_lowmem;
101}