usrmmuinit.c

S3c2510下的VXWORKS的BSP源代码（包括了以太网、串口、USB等等驱动）

/* usrMmuInit.c - memory management unit initialization */

/* Copyright 1992-1999 Wind River Systems, Inc. */

/*
modification history
--------------------
01t,26apr01,scm  remove xscale debug LED code...
01q,20jan99,cdp  prevent MMU initialisation when ARM_HAS_NO_MMU defined;
		 removed support for old ARM libraries.
01p,16nov98,cdp  added BSP selection of MMU for ARM. Added INCLUDE_MMU_MPU.
01n,10nov00,s_m  PPC405 support
01n,02mar00,zl   merged SH support into T2
01m,24aug98,tpr  added PowerPC EC 603 support.
01n,09apr98,hdn  added support for PentiumPro.
01m,28nov96,cdp  added ARM support.
01l,17jun96,tpr  added PowerPC 860 support.
01k,19sep95,tpr  added PowerPC support.
01j,06nov94,tmk  added MC68LC040 support.
01i,16jun94,tpr  added MC68060 cpu support.
01i,13nov93,hdn  added support for I80X86.
01i,02dec93,pme  added Am29K family support.
01h,30jul93,jwt  changed CPU to CPU_FAMILY for SPARC; include sun4.h to BSP.
01g,27feb93,rdc  removed check for both BASIC and FULL (done in usrDepend.c).
01f,13feb93,jcf  changed SPARC mmu initialization to utilize sysMmuLibInit.
01e,16oct92,jwt  included sun4.h to pull in prototype for mmuSun4LibInit().
01d,08oct92,rdc  ensured that both BASIC and FULL aren't set simultaneously.
01c,29sep92,ccc  renamed mmu1eLibInit() to mmuSun4LibInit().
01b,22sep92,rdc  cleanup, added support for sun1e.
01a,18sep92,jcf  written.
*/

/*
DESCRIPTION
This file is used to initialize the memory management unit.  This file is
included by usrConfig.c.

SEE ALSO: usrExtra.c

NOMANUAL
*/

#ifndef  __INCusrMmuInitc
#define  __INCusrMmuInitc 

#if defined(INCLUDE_MMU_BASIC) || defined(INCLUDE_MMU_FULL) || \
    defined(INCLUDE_MMU_MPU)

#if ((CPU == PPC601) || (CPU == PPC603) || (CPU == PPCEC603) || (CPU == PPC604))
#include "arch/ppc/mmuPpcLib.h"
#elif	(CPU == PPC860)
#include "arch/ppc/mmu800Lib.h" 	/* (CPU == PPC860) */
#elif 	((CPU == PPC405) || (CPU == PPC405F))
#include "arch/ppc/mmu405Lib.h"
#endif	

/* externals */

IMPORT FUNCPTR sysMmuLibInit;		/* board-specific MMU library */
IMPORT PHYS_MEM_DESC sysPhysMemDesc [];
IMPORT int sysPhysMemDescNumEnt;
IMPORT UINT32 sysBatDesc [];

#ifndef WRITE_BUFFER_FETCHED
IMPORT void sysMpuGlobalMapInit(void);
#endif  /* WRITE_BUFFER_FETCHED */

/*******************************************************************************
*
* usrMmuInit - initialize the memory management unit
*
* NOMANUAL
*/

void usrMmuInit (void)

    {
#if	((CPU == PPC601) || (CPU == PPC603) || (CPU == PPCEC603) || \
	 (CPU == PPC604) || (CPU == PPC860) || (CPU == PPC405) || \
	 (CPU == PPC405F))
    int mmuType = 0;
#endif /* ((CPU == PPC601) || (CPU == PPC603) || (CPU == PPC604)) */


#if (CPU_FAMILY == SPARC)

    /* BSP selection of cache library */

    if ((sysMmuLibInit == NULL) || (((* sysMmuLibInit) (VM_PAGE_SIZE)) != OK))
	goto usrMmuPanic;
#endif /* CPU_FAMILY == SPARC */

#if (CPU==MC68020)				/* actually 68030 support */
    if (mmu30LibInit (VM_PAGE_SIZE) != OK)
	goto usrMmuPanic;
#endif /* CPU==MC68020 */

#if ((CPU==MC68040) || CPU==MC68060 || CPU==MC68LC040)
    if (mmu40LibInit (VM_PAGE_SIZE) != OK)
	goto usrMmuPanic;
#endif /* CPU==MC68040 || CPU==MC68060  || CPU==MC68LC040 */

#if (CPU_FAMILY==I80X86)
#if	(CPU == PENTIUM) && defined (INCLUDE_MMU_PENTIUMPRO)
    if (mmuPro32LibInit (VM_PAGE_SIZE) != OK)
        goto usrMmuPanic;
#else
    if (mmuLibInit (VM_PAGE_SIZE) != OK)
        goto usrMmuPanic;
#endif	/* (CPU == PENTIUM) && defined (INCLUDE_MMU_PENTIUMPRO) */
#endif /* CPU==I80X86 */

#if (CPU==AM29030)
    if (mmuAm29kLibInit (VM_PAGE_SIZE) != OK)
	goto usrMmuPanic;
#endif /* CPU==AM29030 */

#if (CPU==SH7750)
    if (mmuSh7750LibInit (VM_PAGE_SIZE) != OK)
	goto usrMmuPanic;
#endif /* CPU==SH7750 */

#if (CPU==SH7729 || CPU==SH7700)
    if (mmuSh7700LibInit (VM_PAGE_SIZE) != OK)
	goto usrMmuPanic;
#endif /* CPU==SH7729 || CPU==SH7700 */

#if	((CPU == PPC601) || (CPU == PPC603) || (CPU == PPCEC603) || \
	 (CPU == PPC604) || (CPU == PPC860) || (CPU == PPC405) || \
	 (CPU == PPC405F))
#ifdef	USER_I_MMU_ENABLE
    mmuType |= MMU_INST;		/* select the instruction MMU */
#endif
    
#ifdef	USER_D_MMU_ENABLE
    mmuType |= MMU_DATA;		/* select the DATA MMU */
#endif
    
#if ((CPU == PPC601) || (CPU == PPC603) || (CPU == PPCEC603) || (CPU == PPC604))
    if (mmuPpcLibInit (mmuType, (int *) &sysPhysMemDesc[0],
			sysPhysMemDescNumEnt, (int *) &sysBatDesc [0]) != OK)
	goto usrMmuPanic;
#elif	(CPU == PPC860) /* CPU == PPC860 */
    if (mmu800LibInit (mmuType) != OK)
	goto usrMmuPanic;
#elif	((CPU == PPC405) || (CPU == PPC405F))
    if (mmu405LibInit (mmuType) != OK)
	goto usrMmuPanic;
#endif	
#endif	/* ((CPU == PPC60[134]) || (CPU == PPC860)) */

#if (CPU_FAMILY == ARM)
#if !ARM_HAS_NO_MMU
    /* BSP selection of MMU library */

    if ((sysMmuLibInit == NULL) || (((* sysMmuLibInit) (VM_PAGE_SIZE)) != OK))
	goto usrMmuPanic;
#endif /* !ARM_HAS_NO_MMU */

#ifdef INCLUDE_MMU_MPU

#ifndef WRITE_BUFFER_FETCHED
    sysMpuGlobalMapInit();
#else   /* WRITE_BUFFER_FETCHED */
    if ((vmMpuLibInit (VM_PAGE_SIZE) != OK) ||
	(vmMpuGlobalMapInit (&sysPhysMemDesc[0],
			     sysPhysMemDescNumEnt, TRUE) == NULL))
	goto usrMmuPanic;
#endif  /* WRITE_BUFFER_FETCHED */
#endif /* INCLUDE_MMU_MPU */
#endif /* (CPU_FAMILY == ARM) */


#if (CPU_FAMILY != ARM) || !(ARM_HAS_NO_MMU)
#ifdef INCLUDE_MMU_BASIC		/* XXX TPR */

    if ((vmBaseLibInit (VM_PAGE_SIZE) != OK) ||
        (vmBaseGlobalMapInit (&sysPhysMemDesc[0],
			      sysPhysMemDescNumEnt, TRUE) == NULL))
	goto usrMmuPanic;
#endif /* INCLUDE_MMU_BASIC */

#ifdef INCLUDE_MMU_FULL			/* unbundled mmu product */

    if ((vmLibInit (VM_PAGE_SIZE) != OK) ||
        (vmGlobalMapInit (&sysPhysMemDesc[0],
			  sysPhysMemDescNumEnt, TRUE) == NULL))
	goto usrMmuPanic;

#ifdef INCLUDE_SHOW_ROUTINES 

    vmShowInit ();
#endif /* INCLUDE_SHOW_ROUTINES */

#endif /* INCLUDE_MMU_FULL */
#endif /* CPU_FAMILY != ARM || !(ARM_HAS_NO_MMU) */

    return;

#if (CPU_FAMILY != ARM) || !(ARM_HAS_NO_MMU) 
usrMmuPanic:
    printExc ("usrRoot: MMU configuration failed, errno = %#x", errno, 0,0,0,0);
    reboot (BOOT_WARM_NO_AUTOBOOT);
#endif /* CPU_FAMILY != ARM || !(ARM_HAS_NO_MMU) */
    }

#endif	/* defined(INCLUDE_MMU_BASIC, INCLUDE_MMU_FULL, INCLUDE_MMU_MPU) */
#endif	/* __INCusrMmuInitc */