loadmmu.c
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上传日期:2013-02-24
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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/sgialib.h>
- /* memory functions */
- void (*_clear_page)(void * page);
- void (*_copy_page)(void * to, void * from);
- /* Cache operations. */
- 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_page_to_ram)(struct page * page);
- /* MIPS specific cache operations */
- void (*_flush_cache_sigtramp)(unsigned long addr);
- 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);
- /* TLB operations. */
- void (*_flush_tlb_all)(void);
- void (*_flush_tlb_mm)(struct mm_struct *mm);
- void (*_flush_tlb_range)(struct mm_struct *mm, unsigned long start,
- unsigned long end);
- void (*_flush_tlb_page)(struct vm_area_struct *vma, unsigned long page);
- /* Miscellaneous. */
- void (*update_mmu_cache)(struct vm_area_struct * vma,
- unsigned long address, pte_t pte);
- void (*_show_regs)(struct pt_regs *);
- extern void ld_mmu_r4xx0(void);
- extern void ld_mmu_andes(void);
- void __init load_mmu(void)
- {
- switch(mips_cputype) {
- #if defined (CONFIG_CPU_R4300)
- || defined (CONFIG_CPU_R4X00)
- || defined (CONFIG_CPU_R5000)
- || defined (CONFIG_CPU_NEVADA)
- case CPU_R4000PC:
- case CPU_R4000SC:
- case CPU_R4000MC:
- case CPU_R4200:
- case CPU_R4300:
- case CPU_R4400PC:
- case CPU_R4400SC:
- case CPU_R4400MC:
- case CPU_R4600:
- case CPU_R4640:
- case CPU_R4650:
- case CPU_R4700:
- case CPU_R5000:
- case CPU_R5000A:
- case CPU_NEVADA:
- printk("Loading R4000 MMU routines.n");
- ld_mmu_r4xx0();
- break;
- #endif
- #if defined (CONFIG_CPU_R10000)
- case CPU_R10000:
- printk("Loading R10000 MMU routines.n");
- ld_mmu_andes();
- break;
- #endif
- 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.");
- }
- }