Subversion Repositories openrisc

#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):    David A Rusling

// Contributors: Philippe Robin

// Date:         November 7, 2000

// Purpose:     ARM INTEGRATOR platform specific support routines

// Description:

// Usage:       #include <cyg/hal/hal_platform_setup.h>

//

//####DESCRIPTIONEND####

//

//===========================================================================*/

#include <cyg/hal/hal_integrator.h>

#ifdef CYG_HAL_STARTUP_ROMRAM

#define CYGSEM_HAL_ROM_RESET_USES_JUMP

#endif

// Define macro used to diddle the LEDs during early initialization.

// Can use r0+r1. Argument in \x.

// Control the LEDs PP0-PP3. This requires the jumpers on pins 9-16 to

// be set on LK11 in order to be visible. Otherwise the parallel port

// data pins are diddled instead.

#ifdef CYGHWR_HAL_ARM_INTEGRATOR_DIAG_LEDS

#define CYGHWR_LED_MACRO                                \

        mov     r1, #(15 & (\x))                        ;\

        ldr     r0,=INTEGRATOR_DBG_BASE                 ;\

        strb    r1, [r0, #INTEGRATOR_DBG_LEDS_OFFSET]                    ;

#endif

#define PLATFORM_SETUP1 platform_setup1

        .macro  platform_setup1

#ifdef CYG_HAL_STARTUP_ROMRAM

        // This warps execution away from location 0+x to 0x24000000+x

        // so that we can turn the FLASH remapping off. 

        orr     pc,pc,#0x24000000

        nop

        nop

        nop

        nop

#endif

        ldr     r0,=INTEGRATOR_DBG_BASE

        ldr     r1,=0

        strb    r1, [r0, #INTEGRATOR_DBG_LEDS_OFFSET]                    

        ldr     r0, =INTEGRATOR_HDR_BASE

        ldr     r1, [r0, #INTEGRATOR_HDR_CTRL_OFFSET]                    

        orr     r1, r1, #INTEGRATOR_HDR_CTRL_REMAP                       

        str     r1, [r0, #INTEGRATOR_HDR_CTRL_OFFSET]                    

        ldr     r1, =INTEGRATOR_IRQCONT_BASE

        ldr     r0, =0xFFFFFFFF

        str     r0, [r1, #INTEGRATOR_IRQENABLECLEAR]                     

        str     r0, [r1, #INTEGRATOR_FIQENABLECLEAR]                     

        ldr     r0,=INTEGRATOR_DBG_BASE

        ldr     r1,=0xF

        strb    r1, [r0, #INTEGRATOR_DBG_LEDS_OFFSET]

        LED     7

#ifdef CYG_HAL_STARTUP_ROMRAM

#if 0

        // Compute [logical] base address of this image in ROM

        bl      10f

10:     mov     r9,lr                           // R9 = ROM address of 10:

        ldr     r8,=10b                         // R8 = RAM address of 10:

        sub     r9,r9,r8                        // R9 = ROM-RAM

        ldr     r0,=__exception_handlers        // R0 = RAM address of __exception_handlers

        add     r0,r0,r9                        // R0 = ROM address of __exception_handlers

#endif

        ldr     r0,=0x24000000

        ldr     r1,=__exception_handlers  // ram base & length

        ldr     r2,=__rom_data_end

20:     ldr     r3,[r0],#4

        str     r3,[r1],#4

        cmp     r1,r2

        bne     20b

        ldr     r0,=30f

        mov     pc,r0

        nop

        nop

        nop

        nop

30:

#endif

        LED     6

        .endm

/*---------------------------------------------------------------------------*/

/* end of hal_platform_setup.h                                               */

#endif /* CYGONCE_HAL_PLATFORM_SETUP_H */