loadmmu.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:3k
- /*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
- * Copyright (C) 1997, 1999 Ralf Baechle (ralf@gnu.org)
- * Copyright (C) 1999 Silicon Graphics, Inc.
- */
- #include <linux/config.h>
- #include <linux/init.h>
- #include <linux/kernel.h>
- #include <linux/sched.h>
- #include <linux/mm.h>
- #include <asm/page.h>
- #include <asm/pgtable.h>
- #include <asm/system.h>
- #include <asm/bootinfo.h>
- #include <asm/cpu.h>
- /* memory functions */
- void (*_clear_page)(void * page);
- void (*_copy_page)(void * to, void * from);
- /* Cache operations. */
- void (*_flush_cache_all)(void);
- void (*___flush_cache_all)(void);
- void (*_flush_cache_mm)(struct mm_struct *mm);
- void (*_flush_cache_range)(struct mm_struct *mm, unsigned long start,
- unsigned long end);
- void (*_flush_cache_page)(struct vm_area_struct *vma, unsigned long page);
- void (*_flush_cache_sigtramp)(unsigned long addr);
- void (*_flush_icache_range)(unsigned long start, unsigned long end);
- void (*_flush_icache_page)(struct vm_area_struct *vma, struct page *page);
- void (*_flush_page_to_ram)(struct page * page);
- void (*_flush_icache_all)(void);
- /* MIPS specific cache operations */
- void (*_flush_cache_l2)(void);
- void (*_flush_cache_l1)(void);
- /* DMA cache operations. */
- void (*_dma_cache_wback_inv)(unsigned long start, unsigned long size);
- void (*_dma_cache_wback)(unsigned long start, unsigned long size);
- void (*_dma_cache_inv)(unsigned long start, unsigned long size);
- /* Miscellaneous. */
- void (*_update_mmu_cache)(struct vm_area_struct * vma,
- unsigned long address, pte_t pte);
- extern void ld_mmu_r4xx0(void);
- extern void ld_mmu_andes(void);
- extern void ld_mmu_sb1(void);
- extern void sb1_tlb_init(void);
- extern void ld_mmu_mips64(void);
- extern void r4k_tlb_init(void);
- void __init load_mmu(void)
- {
- if (mips_cpu.options & MIPS_CPU_4KTLB) {
- #if defined (CONFIG_CPU_R4300)
- || defined (CONFIG_CPU_R4X00)
- || defined (CONFIG_CPU_R5000)
- || defined (CONFIG_CPU_NEVADA)
- printk(KERN_INFO "Loading R4000 MMU routines.n");
- ld_mmu_r4xx0();
- #endif
- #if defined(CONFIG_CPU_MIPS64)
- printk(KERN_INFO "Loading MIPS64 MMU routines.n");
- ld_mmu_mips64();
- r4k_tlb_init();
- #endif
- } else switch(mips_cpu.cputype) {
- #ifdef CONFIG_CPU_R10000
- case CPU_R10000:
- case CPU_R12000:
- printk(KERN_INFO "Loading R10000 MMU routines.n");
- ld_mmu_andes();
- break;
- #endif
- #if defined CONFIG_CPU_SB1
- case CPU_SB1:
- printk(KERN_INFO "Loading SB1 MMU routines.n");
- ld_mmu_sb1();
- sb1_tlb_init();
- break;
- #endif
- case CPU_R8000:
- panic("R8000 is unsupported");
- break;
- default:
- /* XXX We need an generic routine in the MIPS port
- * XXX to jabber stuff onto the screen on all machines
- * XXX before the console is setup. The ARCS prom
- * XXX routines look good for this, but only the SGI
- * XXX code has a full library for that at this time.
- */
- panic("Yeee, unsupported mmu/cache architecture or "
- "wrong compiletime kernel configuration.");
- }
- }