hal_platform_setup.h

开放源码实时操作系统源码.

#ifndef CYGONCE_HAL_PLATFORM_SETUP_H
#define CYGONCE_HAL_PLATFORM_SETUP_H

/*=============================================================================
//
//      hal_platform_setup.h
//
//      Platform specific support for HAL (assembly code)
//
//=============================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//=============================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):   jskov
// Contributors:jskov
// Date:        2001-03-16
// Purpose:     E7T platform specific support routines
// Description: 
// Usage:       #include <cyg/hal/hal_platform_setup.h>
//
//####DESCRIPTIONEND####
//
//===========================================================================*/

#include <cyg/hal/plf_io.h>

#define CYGHWR_LED_MACRO                                                  \
        ldr     r0,=E7T_IOPDATA                                          ;\
        mov     r1, #((15 & (\x)) << 4)                                  ;\
        str     r1, [r0]                                                 ;

#if CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE==4096
// Override default to a more sensible value
#undef  CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE
#define CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE 2048
#endif

#if defined(CYG_HAL_STARTUP_ROM) || defined(CYG_HAL_STARTUP_ROMRAM)
#define PLATFORM_SETUP1                                                 ;\
        ldr     r1,=E7T_IOPMOD                                          ;\
        ldr     r2,=0x0001fcf0 /* set led + seg to output */            ;\
        str     r2,[r1,#0x00]                                           ;\
        ldr     r1,=E7T_IOPDATA                                         ;\
        ldr     r2,=0x00000050 /* set leds */                           ;\
        str     r2,[r1,#0x00]                                           ;\
                                                                        ;\
20:     ldr     lr,=33f                                                 ;\
        ldr     r0,=12f                                                 ;\
        ldmia   r0,{r1-r12}                                             ;\
        ldr     r0,=E7T_EXTDBWTH                                        ;\
        stmia   r0,{r1-r12}                                             ;\
        mov     pc,lr                                                   ;\
                                                                        ;\
        /* The below are set with a store-multiple instruction */       ;\
        /* Flash is 16 bit, SRAM is 32 bit */                           ;\
        /* .long   E7T_EXTDBWTH */                                      ;\
12:     .long  ( (E7T_EXTDBWTH_16BIT<<E7T_EXTDBWTH_DSR0_shift)           \
                |(E7T_EXTDBWTH_32BIT<<E7T_EXTDBWTH_DSR1_shift)           \
                |(E7T_EXTDBWTH_32BIT<<E7T_EXTDBWTH_DSR2_shift) )        ;\
        /* Flash at 0x01800000-0x01880000, 5 cycles, 4 cycles */        ;\
        /* .long   E7T_ROMCON0 */                                       ;\
        .long  ( (E7T_ROMCON_PMC_ROM)                                    \
                |(E7T_ROMCON_TPA_5C)                                     \
                |(E7T_ROMCON_TACC_4C)                                    \
                |((0x01800000 >> 16) << E7T_ROMCON_BASE_shift)           \
                |((0x01880000 >> 16) << E7T_ROMCON_NEXT_shift))         ;\
        /* SRAM at 0x00000000-0x00400000, 5 cycles, 2 cycles */         ;\
        /* .long   E7T_ROMCON1 */                                       ;\
        .long  ( (E7T_ROMCON_PMC_ROM)                                    \
                |(E7T_ROMCON_TPA_5C)                                     \
                |(E7T_ROMCON_TACC_2C)                                    \
                |((0x00000000 >> 16) << E7T_ROMCON_BASE_shift)           \
                |((0x00040000 >> 16) << E7T_ROMCON_NEXT_shift))         ;\
        /* SRAM at 0x00400000-0x00800000, 5 cycles, 2 cycles */         ;\
        /* .long   E7T_ROMCON2 */                                       ;\
        .long  ( (E7T_ROMCON_PMC_ROM)                                    \
                |(E7T_ROMCON_TPA_5C)                                     \
                |(E7T_ROMCON_TACC_2C)                                    \
                |((0x00040000 >> 16) << E7T_ROMCON_BASE_shift)           \
                |((0x00080000 >> 16) << E7T_ROMCON_NEXT_shift))         ;\
        /* Below values are what Boot Monitor sets up */                ;\
        /* .long   E7T_ROMCON3 */                                       ;\
        .long   0x08018020                                              ;\
        /* .long   E7T_ROMCON4 */                                       ;\
        .long   0x0a020040                                              ;\
        /* .long   E7T_ROMCON5 */                                       ;\
        .long   0x0c028040                                              ;\
        /* .long   E7T_DRAMCON0 */                                      ;\
        .long   0x00000000                                              ;\
        /* .long   E7T_DRAMCON1 */                                      ;\
        .long   0x00000000                                              ;\
        /* .long   E7T_DRAMCON2 */                                      ;\
        .long   0x00000000                                              ;\
        /* .long   E7T_DRAMCON3 */                                      ;\
        .long   0x00000000                                              ;\
        /* .long   E7T_REFEXTCON */                                     ;\
        .long   0x9c218360                                              ;\
                                                                        ;\
33:
#else
#define PLATFORM_SETUP1
#endif

//-----------------------------------------------------------------------------
// end of hal_platform_setup.h
#endif // CYGONCE_HAL_PLATFORM_SETUP_H