Subversion Repositories openrisc

#ifndef CYGONCE_HAL_PLATFORM_INC

#define CYGONCE_HAL_PLATFORM_INC

##=============================================================================

##

##      platform.inc

##

##      Hitachi SE77x9 board assembler header file

##

##=============================================================================

#####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, gthomas

## Date:        2001-06-12

## Purpose:     Hitachi SE77x9 platform startup

## Description: This file contains various definitions and macros that are

##              useful for writing assembly code for the Hitachi SE77x9

##              board.

## Usage:

##              #include 

##              ...

##

##

######DESCRIPTIONEND####

##

##=============================================================================

#include 

#include 

#include 

#------------------------------------------------------------------------------

# Hardware initialization.

        .macro  hal_hardware_init

#ifndef CYG_HAL_STARTUP_RAM

        // Set up the Bus State Controller

        mova     BSC_settings_table,r0

        mov      r0,r3

1:      mov.w    @r3+,r0                // Address (or zero)

        cmp/eq   #0,r0

        bt       2f

        mov.w    @r3+,r1                // data

        bra      1b

         mov.w    r1,@r0                // delay slot

        .align  2

BSC_settings_table:

        .word   CYGARC_REG_WTCSR, 0xA502

        .word   CYGARC_REG_WTCNT, 0x5A00

        .word   CYGARC_REG_FRQCR, CYGARC_REG_FRQCR_INIT

        # Settings from Hitachi docs for SE7709A

#ifdef CYGNUM_HAL_SH_SE77X9_SDRAM_SETUP

        .word   CYGARC_REG_BCR1,  0x0008

#else

        .word   CYGARC_REG_BCR1,  0x0810

#endif

        .word   CYGARC_REG_BCR2,  0x2ef0

        .word   CYGARC_REG_BCR3,  0x0000

        .word   CYGARC_REG_WCR1,  0x0c30

#ifdef CYGNUM_HAL_SH_SE77X9_SDRAM_SETUP

        .word   CYGARC_REG_WCR2,  0x7ddb

        .word   CYGARC_REG_MCR,   0x002c

#else

        .word   CYGARC_REG_WCR2,  0x5d5a

        .word   CYGARC_REG_MCR,   0x0055

#endif

        .word   CYGARC_REG_DCR,   0x0000

        .word   CYGARC_REG_PCR,   0x0000

#ifdef CYGNUM_HAL_SH_SE77X9_SDRAM_SETUP

        .word   CYGARC_REG_RTCOR, 0xa580

#else

        .word   CYGARC_REG_RTCOR, 0xa54e

#endif

        .word   CYGARC_REG_RFCR,  0xa400

        .word   CYGARC_REG_RTCNT, 0xa500

        .word   CYGARC_REG_RTCSR, 0xa508

        .word   0

2:

#ifdef CYGNUM_HAL_SH_SE77X9_SDRAM_SETUP

        mov.l    $SDMR,r1               // Turns on SDRAM controller

        mov.l    $SDMR_val,r2

        mov.b    r2,@r1

#endif

        mova     Post_settings_table,r0

        mov      r0,r3

1:      mov.l    @r3+,r0                // Address (or zero)

        cmp/eq   #0,r0

        bt       4f

        mov.l    @r3+,r1                // data

        bra      1b

         mov.w    r1,@r0                // delay slot

        .align  4

#ifdef CYGNUM_HAL_SH_SE77X9_SDRAM_SETUP

$SDMR:  .long   0xffffe088

$SDMR_val:

        .long   0

#endif

Post_settings_table:

        .long   CYGNUM_HAL_SH_SE77X9_LEDS_BASE,0x5555   // leds

        .long   0

4:

#endif // CYG_HAL_STARTUP_RAM

        .endm

#------------------------------------------------------------------------------

# Monitor initialization.

#ifndef CYGPKG_HAL_SH_MON_DEFINED

#if     !defined(CYG_HAL_STARTUP_RAM) ||                \

        (       defined(CYG_HAL_STARTUP_RAM) &&         \

                !defined(CYGSEM_HAL_USE_ROM_MONITOR))

        # If we are not starting up from RAM, or we are starting in

        # RAM and NOT using a ROM monitor, initialize the VSR table.

        .macro  hal_mon_init

        mov.l   $hal_vsr_table,r3

        # Write exception vectors

        mov.l   $cyg_hal_default_exception_vsr,r4

        mov     #CYGNUM_HAL_VSR_EXCEPTION_COUNT,r5

1:      mov.l   r4,@r3

        add     #4,r3

        dt      r5

        bf      1b

        # Write interrupt vector

        mov.l   $cyg_hal_default_interrupt_vsr,r4

        mov.l   $hal_vsr_table,r3

        add     #CYGNUM_HAL_VECTOR_INTERRUPT*4,r3

        mov.l   r4,@r3

        bra     2f

         nop

        .align  2

        SYM_PTR_REF(cyg_hal_default_exception_vsr)

        SYM_PTR_REF(cyg_hal_default_interrupt_vsr)

        SYM_PTR_REF(hal_vsr_table)

2:

        .endm

#elif defined(CYG_HAL_STARTUP_RAM) && defined(CYGSEM_HAL_USE_ROM_MONITOR)

        # Initialize the VSR table entries

        # We only take control of the interrupt vector,

        # the rest are left to the ROM for now...

        .macro  hal_mon_init

        # Write interrupt vector

        mov.l   $hal_vsr_table,r3

        mov.l   $cyg_hal_default_interrupt_vsr,r4

        add     #CYGNUM_HAL_VECTOR_INTERRUPT*4,r3

        mov.l   r4,@r3

        bra     2f

         nop

        .align  2

        SYM_PTR_REF(cyg_hal_default_interrupt_vsr)

        SYM_PTR_REF(hal_vsr_table)

2:

        .endm

#else

        .macro  hal_mon_init

        .endm

#endif

#define CYGPKG_HAL_SH_MON_DEFINED

#endif // CYGPKG_HAL_SH_MON_DEFINED

#endif // CYGONCE_HAL_PLATFORM_INC