hal_platform_ints.h

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

#ifndef CYGONCE_HAL_PLATFORM_INTS_H
#define CYGONCE_HAL_PLATFORM_INTS_H
//==========================================================================
//
//      hal_platform_ints.h
//
//      HAL Interrupt and clock support
//
//==========================================================================
//####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):    hmt
// Contributors: hmt
// Date:         2000-02-14
// Purpose:      Define Interrupt support
// Description:  The interrupt details for the Coyanosa (StrongARM II)
//               simulator are defined here.  There's not much to it.
// Usage:
//               #include <cyg/hal/hal_platform_ints.h>
//               ...
//              
//
//####DESCRIPTIONEND####
//
//==========================================================================

#define CYGNUM_HAL_INTERRUPT_reserved0     0
#define CYGNUM_HAL_INTERRUPT_PMU_PMN0_OVFL 1 // See Ch.12 - Performance Mon.
#define CYGNUM_HAL_INTERRUPT_PMU_PMN1_OVFL 2 // PMU counter 0/1 overflow
#define CYGNUM_HAL_INTERRUPT_PMU_CCNT_OVFL 3 // PMU clock overflow
#define CYGNUM_HAL_INTERRUPT_BCU_INTERRUPT 4 // See Ch.11 - Bus Control Unit
#define CYGNUM_HAL_INTERRUPT_NIRQ          5 // external IRQ
#define CYGNUM_HAL_INTERRUPT_NFIQ          6 // external FIQ

#define CYGNUM_HAL_ISR_MIN               0
#define CYGNUM_HAL_ISR_MAX               6

// Using FIQ via an ISR will probably not work, but the interrupt API can
// be used to mask, unmask and detect it.  Best only to use with VSR.

#define CYGNUM_HAL_ISR_COUNT            (CYGNUM_HAL_ISR_MAX+1)

// The vector used by the Real time clock
//#define CYGNUM_HAL_INTERRUPT_RTC        CYGNUM_HAL_INTERRUPT_NIRQ
#define CYGNUM_HAL_INTERRUPT_RTC        CYGNUM_HAL_INTERRUPT_PMU_CCNT_OVFL


// ----------------------------------------------------------------------
// sa2sim has a trick operation to halt the sim.  With luck, this should
// save a lot of time.
#define CYGHWR_TEST_PROGRAM_EXIT()                                      \
CYG_MACRO_START                                                         \
    asm volatile (                                                      \
        "mov    r0, #0x18;" /* SYS_EXIT */                              \
        ".word 0xE7DEAD1A;"  /* magic op SWI emulation in CoySim */     \
        /* "swi    0x123456;" */                                        \
        :                                                               \
        :                                                               \
        : "r0"                                                          \
        );                                                              \
CYG_MACRO_END


#endif // CYGONCE_HAL_PLATFORM_INTS_H