diff options
Diffstat (limited to 'arch/ppc/mm/44x_mmu.c')
| -rw-r--r-- | arch/ppc/mm/44x_mmu.c | 101 |
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 fbb577a..0000000 --- a/arch/ppc/mm/44x_mmu.c +++ /dev/null @@ -1,101 +0,0 @@ -/* - * Modifications by Matt Porter (mporter@mvista.com) to support - * PPC44x Book E processors. - * - * This file contains the routines for initializing the MMU - * on the 4xx series of chips. - * -- paulus - * - * Derived from arch/ppc/mm/init.c: - * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) - * - * Modifications by Paul Mackerras (PowerMac) (paulus@cs.anu.edu.au) - * and Cort Dougan (PReP) (cort@cs.nmt.edu) - * Copyright (C) 1996 Paul Mackerras - * Amiga/APUS changes by Jesper Skov (jskov@cygnus.co.uk). - * - * Derived from "arch/i386/mm/init.c" - * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - */ - -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/string.h> -#include <linux/types.h> -#include <linux/ptrace.h> -#include <linux/mman.h> -#include <linux/mm.h> -#include <linux/swap.h> -#include <linux/stddef.h> -#include <linux/vmalloc.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/highmem.h> - -#include <asm/pgalloc.h> -#include <asm/prom.h> -#include <asm/io.h> -#include <asm/mmu_context.h> -#include <asm/pgtable.h> -#include <asm/mmu.h> -#include <asm/uaccess.h> -#include <asm/smp.h> -#include <asm/bootx.h> -#include <asm/machdep.h> -#include <asm/setup.h> - -#include "mmu_decl.h" - -extern char etext[], _stext[]; - -/* Used by the 44x TLB replacement exception handler. - * Just needed it declared someplace. - */ -unsigned int tlb_44x_index = 0; -unsigned int tlb_44x_hwater = PPC4XX_TLB_SIZE - 1 - PPC44x_EARLY_TLBS; -int icache_44x_need_flush; - -/* - * "Pins" a 256MB TLB entry in AS0 for kernel lowmem - */ -static void __init ppc44x_pin_tlb(unsigned int virt, unsigned int phys) -{ - __asm__ __volatile__( - "tlbwe %2,%3,%4\n" - "tlbwe %1,%3,%5\n" - "tlbwe %0,%3,%6\n" - : - : "r" (PPC44x_TLB_SW | PPC44x_TLB_SR | PPC44x_TLB_SX | PPC44x_TLB_G), - "r" (phys), - "r" (virt | PPC44x_TLB_VALID | PPC44x_TLB_256M), - "r" (tlb_44x_hwater--), /* slot for this TLB entry */ - "i" (PPC44x_TLB_PAGEID), - "i" (PPC44x_TLB_XLAT), - "i" (PPC44x_TLB_ATTRIB)); -} - -void __init MMU_init_hw(void) -{ - flush_instruction_cache(); -} - -unsigned long __init mmu_mapin_ram(void) -{ - unsigned long addr; - - /* Pin in enough TLBs to cover any lowmem not covered by the - * initial 256M mapping established in head_44x.S */ - for (addr = PPC_PIN_SIZE; addr < total_lowmem; - addr += PPC_PIN_SIZE) - ppc44x_pin_tlb(addr + PAGE_OFFSET, addr); - - return total_lowmem; -} |