startup.cxx

Intel XScale PXA255 引导Linux的Redboot 版bootloader源代码！

//========================================================================
//
//      startup.cxx
//
//      General startup code for the target machine
//
//========================================================================
//####COPYRIGHTBEGIN####
//                                                                          
// -------------------------------------------                              
// The contents of this file are subject to the Red Hat eCos Public License 
// Version 1.1 (the "License"); you may not use this file except in         
// compliance with the License.  You may obtain a copy of the License at    
// http://www.redhat.com/                                                   
//                                                                          
// Software distributed under the License is distributed on an "AS IS"      
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the 
// License for the specific language governing rights and limitations under 
// the License.                                                             
//                                                                          
// The Original Code is eCos - Embedded Configurable Operating System,      
// released September 30, 1998.                                             
//                                                                          
// The Initial Developer of the Original Code is Red Hat.                   
// Portions created by Red Hat are                                          
// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.                             
// All Rights Reserved.                                                     
// -------------------------------------------                              
//                                                                          
//####COPYRIGHTEND####
//========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):     jlarmour
// Contributors:  jlarmour
// Date:          1999-01-21
// Purpose:       This provides generic startup code for the eCos system.
// Description:   We start the system with the entry point cyg_start()
//                which is called from the eCos HALs. This in turn invokes
//                cyg_prestart(), cyg_package_start() and cyg_user_start().
//                All these can be overriden by the user.
// Usage:         Override the defaults to use your own startup code,
//                which will allow you to take complete control after the
//                HAL initialization
//
//####DESCRIPTIONEND####
//
//========================================================================

// CONFIGURATION

#include <pkgconf/infra.h>   // Configuration header

// INCLUDES

#include <cyg/infra/cyg_type.h>    // Common type definitions and support
#include <cyg/infra/cyg_trac.h>    // Default tracing support

#ifdef CYGPKG_KERNEL
# include <pkgconf/kernel.h>
# include <cyg/kernel/sched.hxx>
# include <cyg/kernel/sched.inl>
#endif

// FUNCTION PROTOTYPES

externC void
cyg_start( void ) CYGBLD_ATTRIB_WEAK;

externC void
cyg_prestart( void );

externC void
cyg_package_start( void );

externC void
cyg_user_start( void );


// FUNCTIONS

void
cyg_start( void )
{
    CYG_REPORT_FUNCTION();
    CYG_REPORT_FUNCARGVOID();

    cyg_prestart();

    cyg_package_start();

    cyg_user_start();

#ifdef CYGPKG_KERNEL
    Cyg_Scheduler::start();
#endif

    CYG_REPORT_RETURN();
} // cyg_start()

// EOF startup.cxx