Subversion Repositories openrisc

#ifndef CYGONCE_HAL_PLATFORM_INC

#define CYGONCE_HAL_PLATFORM_INC

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

##

##      platform.inc

##

##      SH/CQ7708 board assembler header file

##

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

## ####ECOSGPLCOPYRIGHTBEGIN####

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

## This file is part of eCos, the Embedded Configurable Operating System.

## Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, 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.,

## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 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 v2.

##

## This exception does not invalidate any other reasons why a work based

## on this file might be covered by the GNU General Public License.

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

## ####ECOSGPLCOPYRIGHTEND####

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

#######DESCRIPTIONBEGIN####

##

## Author(s):   jskov

## Contributors:jskov

## Date:        2000-02-02

## Purpose:     SH/CQ7708 board definitions.

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

##              useful for writing assembly code for the SH/CQ7708 board.

## Usage:

##              #include 

##              ...

##

##

######DESCRIPTIONEND####

##

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

#include 

#include 

#include 

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

# Hardware initialization.

        .macro  hal_hardware_init

        // 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:

        # These are the settings set by the ROM Monitor.

        .word   (CYGARC_REG_FRQCR & 0x0000FFFF)

        .word   CYGARC_REG_FRQCR_INIT

        # BCR1: Areas 3 are SDRAM

        .word   (CYGARC_REG_BCR1 & 0x0000FFFF)

        .word   0x0010

        # BCR2: Bus size of areas 2,4 are 8 bits

        .word   (CYGARC_REG_BCR2 & 0x0000FFFF)

        .word   0x3ddc

        # WCR1: 3 wait-state cycles inserted for all areas

        .word   (CYGARC_REG_WCR1 & 0x0000FFFF)

        .word   0x3fff

        # WCR2: cs0=8wait cs1=0wait cs2=0wait cs3=2wait cs4=4wait */

        .word   (CYGARC_REG_WCR2 & 0x0000FFFF)

        .word   0x0246

        # MCR:  dram setting 10 bit

        .word   (CYGARC_REG_MCR & 0x0000FFFF)

        .word   0x0074

        # RTCSR: refresh timer control

        .word   (CYGARC_REG_RTCSR & 0x0000FFFF)

        .word   (0xa500 | 0x0010)

        # RTCOR: refresh time constant

        .word   (CYGARC_REG_RTCOR & 0x0000FFFF)

        .word   (0xa500 | 0x003a)

        # Table end

        .word   0

        .align  2

2:

        .endm

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

# Monitor initialization.

#ifndef CYGPKG_HAL_SH_MON_DEFINED

#if     defined(CYG_HAL_STARTUP_ROM) ||                 \

        (       defined(CYG_HAL_STARTUP_RAM) &&         \

                !defined(CYGSEM_HAL_USE_ROM_MONITOR))

        # If we are starting up from ROM, 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