Subversion Repositories openrisc_me

#ifndef CYGONCE_HAL_PLATFORM_INC
#define CYGONCE_HAL_PLATFORM_INC
##=============================================================================
##
##      platform.inc
##
##      ASB2303 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):   dmoseley
## Contributors:dmoseley
## Date:        2000-08-11
## Purpose:     ASB board definitions.
## Description: This file contains various definitions and macros that are
##              useful for writing assembly code for the ASB board.
## Usage:
##              #include <cyg/hal/platform.inc>
##              ...
##              
##
######DESCRIPTIONEND####
##
##=============================================================================

#include <pkgconf/hal.h>
#include <cyg/hal/plf_io.h>

#------------------------------------------------------------------------------
# Diagnostics macros.

#include <cyg/hal/hal_io.h>

        .macro  hal_diag_data
        .globl  hal_diag_led_state
hal_diag_led_state:     .long   0xffffffff
hal_diag_intr_count:    .long   0
        .endm

#define HAL_EARLY_INIT hal_led_init
.macro hal_led_init
        # Setup Port 0 as all output
        # Do this the very first thing so we have LED debugging available early
        mov     HAL_GPIO_MODE_ALL_OUTPUT,d0
        mov     HAL_GPIO_0_MODE,a0
        mov     d0,(a0)
.endm

        .macro  hal_diag_init
        hal_led_init
        jmp     1f

hal_diag_digits:
        .byte   0x81    # 0
        .byte   0xf3    # 1
        .byte   0x49    # 2
        .byte   0x61    # 3
        .byte   0x33    # 4
        .byte   0x25    # 5
        .byte   0x05    # 6
        .byte   0xf1    # 7
        .byte   0x01    # 8
        .byte   0x21    # 9
        .byte   0x11    # A
        .byte   0x07    # B
        .byte   0x8d    # C
        .byte   0x43    # D
        .byte   0x0d    # E
        .byte   0x1d    # F

hal_diag_hex_digits:
        .ascii  "0123456789ABCDEF"

1:
        hal_diag_led 0
        .endm

        .macro  hal_diag_excpt_start
        mov     HAL_LED_ADDRESS,a0
        mov     (a0),d0
        xor     0x01000000,d0
        mov     d0,(a0)
        .endm

        .macro  hal_diag_intr_start
        mov     (hal_diag_intr_count),d1
        inc     d1
        cmp     100,d1
        bne     x\@
        clr     d1
        mov     HAL_LED_ADDRESS,a0
        mov     (a0),d0
        xor     0x00010000,d0
        mov     d0,(a0)
x\@:
        mov     d1,(hal_diag_intr_count)
        .endm

        .macro  hal_diag_restore
        mov     (hal_diag_intr_count),d0
        and     0x1000,d0
        beq     x\@
        mov     HAL_LED_ADDRESS,a0
        mov     (a0),d0
        and     0xfffeffff,d0
        mov     d0,(a0)
x\@:
        .endm

        .macro  hal_diag_led val
        movm    [d2,d3,a2],(sp)
0:      mov     hal_diag_digits,a2
        mov     \val,d2
        and     0xf,d2
        add     d2,a2
        movbu   (a2),d3
        mov     HAL_LED_ADDRESS,a2
        mov     (a2),d2
        asl     8,d2
        or      d3,d2
        mov     d2,(a2)
        movm    (sp),[d2,d3,a2]
        .endm

#define CYGPKG_HAL_MN10300_DIAG_DEFINED

#------------------------------------------------------------------------------
# MEMC macros.
        
#ifndef CYGPKG_HAL_MN10300_MEMC_DEFINED

// These settings follow the recommended settings in the
// "MN103E010 Evaluation Board User's Guide"

#define BCCR                    0xC0002000
#define BCCR_INIT               0x12040580

#define SBBASE0                 0xD8C00100
#define SBBASE1                 0xD8C00110
#define SBBASE2                 0xD8C00120
#define SBBASE3                 0xD8C00130
#define SBBASE4                 0xD8C00140
#define SBBASE5                 0xD8C00150
#define SBBASE6                 0xD8C00160
#define SBBASE7                 0xD8C00170

#define SBBASE0_INIT_SYSFL      0x8000FE01
#define SBBASE0_INIT_BPROM      0x8400FE01
#define SBBASE1_INIT_SYSFL      0x8400FE01
#define SBBASE1_INIT_BPROM      0x8000FE01
#define SBBASE2_INIT            0x8600FF81
#define SBBASE3_INIT            0x00000000
#define SBBASE4_INIT            0x00000000
#define SBBASE5_INIT            0x00000000
#define SBBASE6_INIT            0x00000000
#define SBBASE7_INIT            0x00000000

#define SBCTRL00                0xD8C00200
#define SBCTRL10                0xD8C00210
#define SBCTRL20                0xD8C00220
#define SBCTRL30                0xD8C00230
#define SBCTRL40                0xD8C00240
#define SBCTRL50                0xD8C00250
#define SBCTRL60                0xD8C00260
#define SBCTRL70                0xD8C00270

#define SBCTRL00_INIT           0x21111000
#define SBCTRL10_INIT           0x21111000
#define SBCTRL20_INIT           0x21111000
#define SBCTRL30_INIT           0x00000000
#define SBCTRL40_INIT           0x00000000
#define SBCTRL50_INIT           0x00000000 // 0x21111100
#define SBCTRL60_INIT           0x00000000 // 0x11110000
#define SBCTRL70_INIT           0x00000000

#define SBCTRL01                0xD8C00204
#define SBCTRL11                0xD8C00214
#define SBCTRL21                0xD8C00224
#define SBCTRL31                0xD8C00234
#define SBCTRL41                0xD8C00244
#define SBCTRL51                0xD8C00254
#define SBCTRL61                0xD8C00264
#define SBCTRL71                0xD8C00274

#define SBCTRL01_INIT           0x00100200
#define SBCTRL11_INIT           0x00100200
#define SBCTRL21_INIT           0x00100200
#define SBCTRL31_INIT           0x00000000
#define SBCTRL41_INIT           0x00000000
#define SBCTRL51_INIT           0x00000000
#define SBCTRL61_INIT           0x00000000
#define SBCTRL71_INIT           0x00000000

#define SBCTRL02                0xD8C00208 
#define SBCTRL12                0xD8C00218
#define SBCTRL22                0xD8C00228
#define SBCTRL32                0xD8C00238
#define SBCTRL42                0xD8C00248
#define SBCTRL52                0xD8C00258
#define SBCTRL62                0xD8C00268
#define SBCTRL72                0xD8C00278

#define SBCTRL02_INIT           0x00000004
#define SBCTRL12_INIT           0x04000004
#define SBCTRL22_INIT           0x00000004
#define SBCTRL32_INIT           0x00000000
#define SBCTRL42_INIT           0x00000000
#define SBCTRL52_INIT           0x00000000
#define SBCTRL62_INIT           0x00000000
#define SBCTRL72_INIT           0x00000000

#define SDBASE0                 0xDA000008
#define SDBASE1                 0xDA00000C
#define SDRAMBUS                0xDA000000

// 16MB SDRAM
#define SDBASE0_8M_INIT         0x9000FF81
#define SDBASE1_8M_INIT         0x9080FF81
#define SDRAMBUS_8M_INIT        0xA8990654

// 32MB SDRAM
#define SDBASE0_16M_INIT        0x9000FF01
#define SDBASE1_16M_INIT        0x9100FF01
#define SDRAMBUS_16M_INIT       0xA89a0654

// 64MB SDRAM
#define SDBASE0_32M_INIT        0x9000fe01
#define SDBASE1_32M_INIT        0x9200fe01
#define SDRAMBUS_32M_INIT       0xa89b0654

        .macro  hal_memc_init
        mov     BCCR,a0
        mov     BCCR_INIT,d0
        mov     d0,(a0)

        // reduce the span of the ROM banks first
        mov     (SBBASE0),d0
        btst    1,d0
        beq     0f
        mov     0x8000FE01,d0
        mov     d0,(SBBASE0)
0:
        mov     (SBBASE1),d0
        btst    1,d0
        beq     0f
        mov     0x8000FE01,d0
        mov     d0,(SBBASE1)
0:
        
        mov     SBBASE2,a0
        mov     SBBASE2_INIT,d0
        mov     d0,(a0)

        mov     SBBASE3,a0
        mov     SBBASE3_INIT,d0
        mov     d0,(a0)

        mov     SBBASE4,a0
        mov     SBBASE4_INIT,d0
        mov     d0,(a0)

        mov     SBBASE5,a0
        mov     SBBASE5_INIT,d0
        mov     d0,(a0)

        mov     SBBASE6,a0
        mov     SBBASE6_INIT,d0
        mov     d0,(a0)

        mov     SBBASE7,a0
        mov     SBBASE7_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL00,a0
        mov     SBCTRL00_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL10,a0
        mov     SBCTRL10_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL20,a0
        mov     SBCTRL20_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL30,a0
        mov     SBCTRL30_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL40,a0
        mov     SBCTRL40_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL50,a0
        mov     SBCTRL50_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL60,a0
        mov     SBCTRL60_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL70,a0
        mov     SBCTRL70_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL01,a0
        mov     SBCTRL01_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL11,a0
        mov     SBCTRL11_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL21,a0
        mov     SBCTRL21_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL31,a0
        mov     SBCTRL31_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL41,a0
        mov     SBCTRL41_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL51,a0
        mov     SBCTRL51_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL61,a0
        mov     SBCTRL61_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL71,a0
        mov     SBCTRL71_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL02,a0
        mov     SBCTRL02_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL12,a0
        mov     SBCTRL12_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL22,a0
        mov     SBCTRL22_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL32,a0
        mov     SBCTRL32_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL42,a0
        mov     SBCTRL42_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL52,a0
        mov     SBCTRL52_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL62,a0
        mov     SBCTRL62_INIT,d0
        mov     d0,(a0)

        mov     SBCTRL72,a0
        mov     SBCTRL72_INIT,d0
        mov     d0,(a0)

#ifndef CYG_HAL_STARTUP_RAM

        // Setup for 64MB initially and determine final mem config below.
        mov     SDRAMBUS,a0
        mov     (a0),d0
        and     0xfffffffb,d0  // disable refresh
        mov     d0,(a0)

        mov     SDBASE0,a0
        mov     SDBASE0_32M_INIT,d0
        mov     d0,(a0)
        mov     SDBASE1,a0
        mov     SDBASE1_32M_INIT,d0
        mov     d0,(a0)
        mov     SDRAMBUS,a0
        mov     SDRAMBUS_32M_INIT,d0
        mov     d0,(a0)

        mov     0x1000,d0
0:
        sub     1,d0
        bne     0b

        // Check for 16MB and 32MB shadowing to determine actual amount of
        // memory installed. This assumes 2x8M, 2x16M, or 2x32M configs.
        mov     0,d0
        mov     d0,(0x90800000)
        mov     d0,(0x91000000)
        mov     0xaaaaaaaa,d0
        mov     d0,(0x90000000)
        mov     (0x90800000),d1
        cmp     d0,d1
        bne     1f

        // 16MB installed
        mov     SDRAMBUS,a0
        mov     (a0),d0
        and     0xfffffffb,d0  // disable refresh
        mov     d0,(a0)
        mov     SDBASE0,a1
        mov     SDBASE0_8M_INIT,d1
        mov     d1,(a1)
        mov     SDBASE1,a1
        mov     SDBASE1_8M_INIT,d1
        mov     d1,(a1)
        mov     SDRAMBUS_8M_INIT,d0
        mov     d0,(a0)
        jmp     2f
1:
        mov     (0x91000000),d1
        cmp     d0,d1
        bne     2f

        // 32MB installed
        mov     SDRAMBUS,a0
        mov     (a0),d0
        and     0xfffffffb,d0  // disable refresh
        mov     d0,(a0)
        mov     SDBASE0,a1
        mov     SDBASE0_16M_INIT,d1
        mov     d1,(a1)
        mov     SDBASE1,a1
        mov     SDBASE1_16M_INIT,d1
        mov     d1,(a1)
        mov     SDRAMBUS_16M_INIT,d0
        mov     d0,(a0)
2:
#endif // ! CYG_HAL_STARTUP_RAM

        // now the ROMs need putting into the right place
        // - this is tricky because when we're booting from the system flash,
        //   it has had its base address pre-swapped by the CPU
        // - we need to copy a small piece of code to the SRAM and execute it
        //   there

        // copy the ROM address adjustor to the SRAM
__hal_plf_base_ref:
        mov     pc,a3
        mov     a3,a0
        add     __hal_plf_rom_swap_start-__hal_plf_base_ref,a0
        add     __hal_plf_rom_swap_end-__hal_plf_base_ref,a3
        mov     0x8C000000,a1
0:      movbu   (a0),d0
        movbu   d0,(a1)
        inc     a0
        inc     a1
        cmp     a0,a3
        bcc     0b
        mov     0x8C000000,a1
        jmp     (a1)    

        ////////////////////////////////////////////////////////////////
__hal_plf_rom_swap_start:
        // put boot PROM at 0x80000000, and system flash at 0x84000000
        mov     SBBASE0_INIT_BPROM,d0
        mov     d0,(SBBASE0)

        mov     SBBASE1_INIT_BPROM,d0
        mov     d0,(SBBASE1)

        // memory bank 0
        mov     SBCTRL00_INIT,d0
        mov     d0,(SBCTRL00)
        mov     SBCTRL01_INIT,d0
        mov     d0,(SBCTRL01)
        mov     SBCTRL02_INIT,d0
        mov     d0,(SBCTRL02)

        // memory bank 1
        mov     SBCTRL10_INIT,d0
        mov     d0,(SBCTRL10)
        mov     SBCTRL11_INIT,d0
        mov     d0,(SBCTRL11)
        mov     SBCTRL12_INIT,d0
        mov     d0,(SBCTRL12)

        // jump forward so we start running from the 80000000/84000000 base address
        mov     __hal_plf_rom_swap_reentry,a0
        jmp     (a0)
__hal_plf_rom_swap_end:
        ////////////////////////////////////////////////////////////////

__hal_plf_rom_swap_reentry:
        // clear the on-CPU 16Kb SRAM
        clr     d0
        mov     16384/4-4,d1
        mov     0x8C000000,a0
0:
        mov     d0,(a0,d1)
        sub     4,d1
        bnc     0b

        .endm

#define CYGPKG_HAL_MN10300_MEMC_DEFINED

#endif  


//-----------------------------------------------------------------------------
// Syscall support.
// RedBoot provides syscall handling for this board
// These must be kept in sync with the rest of the tree.
#define SIGSYS     12
#define SIGSYSCALL SIGSYS

#------------------------------------------------------------------------------
#endif // ifndef CYGONCE_HAL_PLATFORM_INC
# end of platform.inc