Subversion Repositories usb_fpga_2_04

/*!

   ZTEX Firmware Kit for EZ-USB FX2 Microcontrollers

   Copyright (C) 2009-2014 ZTEX GmbH.

   http://www.ztex.de

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License version 3 as

   published by the Free Software Foundation.

   This program 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 this program; if not, see http://www.gnu.org/licenses/.

!*/

/*

    FPGA support for ZTEX USB FPGA Modules 2.13 and 2.16

*/

#ifndef[ZTEX_FPGA_H]

#define[ZTEX_FPGA_H]

#define[@CAPABILITY_FPGA;]

__xdata BYTE fpga_checksum;         // checksum

__xdata DWORD fpga_bytes;           // transfered bytes

__xdata BYTE fpga_init_b;           // init_b state (should be 222 after configuration)

__xdata BYTE fpga_flash_result;     // result of automatic fpga configuarion from Flash

__xdata BYTE fpga_conf_initialized; // 123 if initialized

__xdata BYTE OOEC;

/* *********************************************************************

   ***** reset_fpga ****************************************************

   ********************************************************************* */

static void reset_fpga () {

    OEE = bmBIT7;

    IOE = 0;

    wait(1);

    OEE = 0;

    fpga_conf_initialized = 0;

}

/* *********************************************************************

   ***** init_fpga *****************************************************

   ********************************************************************* */

static void init_fpga () {

    if ( (IOE & bmBIT0) == 0 ) {

        // ensure that FPGA is in a proper configuration mode

        OEE = bmBIT7;

        IOE = 0;

        wait(1);

    }

    OEE = 0;

    fpga_conf_initialized = 0;

}

/* *********************************************************************

   ***** init_fpga_configuration ***************************************

   ********************************************************************* */

static void init_fpga_configuration () {

    unsigned short k;

    {

        PRE_FPGA_RESET

    }

    IFCONFIG = bmBIT7;

    SYNCDELAY;

    PORTCCFG = 0;

    PORTECFG = 0;

    OOEC = OEC;

    fpga_conf_initialized = 123;

    OEC &= ~( bmBIT7 | bmBIT4);         // in: MOSI, MISO

    OEC |= bmBIT6;                      // out: CCLK

    IOC6 = 1;

//  in:       INIT_B  DONE 

//  OEE &= ~( bmBIT1 | bmBIT0 );

//  out:     CM0      CM1   RESET_N     CSI     RDWR

    OEE = bmBIT3 | bmBIT4 | bmBIT7 | bmBIT2 | bmBIT5;

    IOE = bmBIT3;

    wait(2);

    IOE = bmBIT3 | bmBIT7;              // ready for configuration

    IOC6 = 0;

    k=0;

    while (!(IOE & bmBIT1) && k<65535)

        k++;

    fpga_init_b = (IOE & bmBIT1) ? 200 : 100;

    fpga_bytes = 0;

    fpga_checksum = 0;

}

/* *********************************************************************

   ***** post_fpga_config **********************************************

   ********************************************************************* */

static void post_fpga_config () {

    POST_FPGA_CONFIG

}

/* *********************************************************************

   ***** finish_fpga_configuration *************************************

   ********************************************************************* */

static void finish_fpga_configuration () {

    BYTE w;

    fpga_init_b += (IOE & bmBIT1) ? 22 : 11;

    for ( w=0; w<64; w++ ) {

        IOC6 = 1; IOC6 = 0;

    }

    IOE |= bmBIT2;              // CSI = 1

    IOC6 = 1; IOC6 = 0;

    IOC6 = 1; IOC6 = 0;

    IOC6 = 1; IOC6 = 0;

    IOC6 = 1; IOC6 = 0;

    OEE = 0;

    OEC = OOEC;

    if ( IOE & bmBIT0 )  {

        post_fpga_config();

    }

}

/* *********************************************************************

   ***** EP0 vendor request 0x30 ***************************************

   ********************************************************************* */

ADD_EP0_VENDOR_REQUEST((0x30,,          // get FPGA state

    MEM_COPY1(fpga_checksum,EP0BUF+1,7);

    if ( IOE & bmBIT0 )  {

        EP0BUF[0] = 0;                    // FPGA configured 

    }

    else {

        EP0BUF[0] = 1;                   // FPGA unconfigured 

        OEE = 0;

        reset_fpga();                   // prepare FPGA for configuration

     }

//    EP0BUF[8] = 0;                    // bit order for bitstream in Flash memory: non-swapped

    EP0BUF[8] = 1;                      // bit order for bitstream in Flash memory: swapped

    EP0BCH = 0;

    EP0BCL = 9;

,,));;

/* *********************************************************************

   ***** EP0 vendor command 0x31 ***************************************

   ********************************************************************* */

ADD_EP0_VENDOR_COMMAND((0x31,,reset_fpga();,,));;       // reset FPGA

/* *********************************************************************

   ***** EP0 vendor command 0x32 ***************************************

   ********************************************************************* */

void fpga_send_ep0() {                  // send FPGA configuration data

    BYTE oOEB;

    oOEB = OEB;

    OEB = 255;

    fpga_bytes += ep0_payload_transfer;

    __asm

        mov     dptr,#_EP0BCL

        movx    a,@dptr

        jz      010000$

        mov     r2,a

        mov     _AUTOPTRL1,#(_EP0BUF)

        mov     _AUTOPTRH1,#(_EP0BUF >> 8)

        mov     _AUTOPTRSETUP,#0x07

        mov     dptr,#_fpga_checksum

        movx    a,@dptr

        mov     r1,a

        mov     dptr,#_XAUTODAT1

010001$:

        movx    a,@dptr                 // 2

        mov     _IOB,a                  // 2

        setb    _IOC6                   // 2

        add     a,r1                    // 1

        mov     r1,a                    // 1

        clr     _IOC6                   // 2

        djnz    r2, 010001$             // 4

        mov     dptr,#_fpga_checksum

        mov     a,r1

        movx    @dptr,a

010000$:

        __endasm;

    OEB = oOEB;

    if ( EP0BCL<64 ) {

        finish_fpga_configuration();

    }

}

ADD_EP0_VENDOR_COMMAND((0x32,,          // send FPGA configuration data

    if ( fpga_conf_initialized != 123 )

        init_fpga_configuration();

,,

    fpga_send_ep0();

));;

#ifdef[HS_FPGA_CONF_EP]

#ifeq[HS_FPGA_CONF_EP][2]

#elifeq[HS_FPGA_CONF_EP][4]

#elifeq[HS_FPGA_CONF_EP][6]

#elifneq[HS_FPGA_CONF_EP][8]

#error[`HS_FPGA_CONF_EP' is not defined correctly. Valid values are: `2', `4', `6', `8'.]

#endif

#define[@CAPABILITY_HS_FPGA;]

/* *********************************************************************

   ***** EP0 vendor request 0x33 ***************************************

   ********************************************************************* */

ADD_EP0_VENDOR_REQUEST((0x33,,          // get high speed fpga configuration endpoint and interface 

    EP0BUF[0] = HS_FPGA_CONF_EP; // endpoint

    EP0BUF[1] = EPHS_FPGA_CONF_EP_INTERFACE; // interface

    EP0BCH = 0;

    EP0BCL = 2;

,,));;

/* *********************************************************************

   ***** EP0 vendor command 0x34 ***************************************

   ********************************************************************* */

// FIFO write wave form

const char __xdata GPIF_WAVE_DATA_HSFPGA_24MHZ[32] =

{

/* LenBr */ 0x01,     0x88,     0x01,     0x01,     0x01,     0x01,     0x01,     0x07,

/* Opcode*/ 0x02,     0x07,     0x02,     0x02,     0x02,     0x02,     0x02,     0x00,

/* Output*/ 0x20,     0x00,     0x00,     0x00,     0x00,     0x00,     0x00,     0x20,

/* LFun  */ 0x00,     0x36,     0x00,     0x00,     0x00,     0x00,     0x00,     0x3F,

};

const char __xdata GPIF_WAVE_DATA_HSFPGA_12MHZ[32] =

{

/* LenBr */ 0x02,     0x01,     0x90,     0x01,     0x01,     0x01,     0x01,     0x07,

/* Opcode*/ 0x02,     0x02,     0x07,     0x02,     0x02,     0x02,     0x02,     0x00,

/* Output*/ 0x20,     0x00,     0x00,     0x00,     0x00,     0x00,     0x00,     0x20,

/* LFun  */ 0x00,     0x00,     0x36,     0x00,     0x00,     0x00,     0x00,     0x3F,

};

void init_cpld_fpga_configuration() {

    IFCONFIG = bmBIT7 | bmBIT6 | 2;     // Internal source, 48MHz, GPIF

    GPIFREADYCFG = 0;

    GPIFCTLCFG = 0x0;

    GPIFIDLECS = 0;

    GPIFIDLECTL = 4;

    GPIFWFSELECT = 0x4E;

    GPIFREADYSTAT = 0;

    MEM_COPY1(GPIF_WAVE_DATA_HSFPGA_24MHZ,GPIF_WAVE3_DATA,32);

    FLOWSTATE = 0;

    FLOWLOGIC = 0x10;

    FLOWEQ0CTL = 0;

    FLOWEQ1CTL = 0;

    FLOWHOLDOFF = 0;

    FLOWSTB = 0;

    FLOWSTBEDGE = 0;

    FLOWSTBHPERIOD = 0;

    REVCTL = 0x1;                               // reset fifo

    SYNCDELAY;

    FIFORESET = 0x80;

    SYNCDELAY;

    FIFORESET = HS_FPGA_CONF_EP;

    SYNCDELAY;

    FIFORESET = 0x0;

    SYNCDELAY;

    EPHS_FPGA_CONF_EPFIFOCFG = 0;                // config fifo

    SYNCDELAY;

    EPHS_FPGA_CONF_EPFIFOCFG = bmBIT4 | 0;

    SYNCDELAY;

    EPHS_FPGA_CONF_EPGPIFFLGSEL = 1;

    SYNCDELAY;

    GPIFTCB3 = 1;                               // abort after at least 14*65536 transactions

    SYNCDELAY;

    GPIFTCB2 = 0;

    SYNCDELAY;

    GPIFTCB1 = 0;

    SYNCDELAY;

    GPIFTCB0 = 0;

    SYNCDELAY;

    EPHS_FPGA_CONF_EPGPIFTRIG = 0xff;           // arm fifos

    SYNCDELAY;

    OEC &= ~bmBIT6;                             // disable CCLK output

    IOE = bmBIT4 | bmBIT7;                      // HS config mode

}

ADD_EP0_VENDOR_COMMAND((0x34,,                  // init fpga configuration

    init_fpga_configuration();

    EPHS_FPGA_CONF_EPCS &= ~bmBIT0;             // clear stall bit

    GPIFABORT = 0xFF;                           // abort pendig 

    init_cpld_fpga_configuration();

,,));;

/* *********************************************************************

   ***** EP0 vendor command 0x35 ***************************************

   ********************************************************************* */

ADD_EP0_VENDOR_COMMAND((0x35,,          // finish fpga configuration

    IOE = bmBIT3 | bmBIT7;

    OEC |= bmBIT6;                      // out: CCLK

    GPIFABORT = 0xFF;

    SYNCDELAY;

    IFCONFIG &= 0xf0;

    SYNCDELAY;

    finish_fpga_configuration();

,,));;

#endif  // HS_FPGA_CONF_EP

#ifeq[FLASH_BITSTREAM_ENABLED][1]

/* *********************************************************************

   ***** fpga_configure_from_flash *************************************

   ********************************************************************* */

/*

    Configure the FPGA using a bitstream from flash.

    If force == 0 a already configured FPGA is not re-configured.

    Return values:

        1 : FPGA already configured

        4 : Configuration error

*/

#define[SPI_CS][IOSPI_PORTSPI_BIT_CS]

#define[SPI_PORT][C]

#define[SPI_BIT_DO][4]

#define[SPI_BIT_CS][5]

#define[SPI_BIT_CLK][6]

#define[SPI_BIT_DI][7]

BYTE fpga_configure_from_flash( BYTE force) {

    BYTE c;

    WORD i;

    if ( ( force == 0 ) && ( IOE & bmBIT0 ) ) {

        fpga_flash_result = 1;

        return 1;

    }

    fpga_flash_result = 0;

    c = OESPI_PORT;

    OESPI_PORT &= ~( bmBITSPI_BIT_CS | bmBITSPI_BIT_DI | bmBITSPI_BIT_CLK );    // disable SPI outputs

    {

        PRE_FPGA_RESET

    }

// reset FPGA and start configuration from flash

//  out:     CM0      CM1   RESET_N     CSI     RDWR

    OEE = bmBIT3 | bmBIT4 | bmBIT7;

    IOE = 0;

    wait(1);

    IOE = bmBIT7;

// wait up to 10s for CS going high

    wait(10);

    for (i=0; (IOE & bmBIT1) && (SPI_CS==0) && i<10000; i++ ) {

        wait(1);

    }

    wait(1);

    if ( IOE & bmBIT0 )  {

        post_fpga_config();

    }

    else {

        IOE =  bmBIT3 | bmBIT4; // leave master SPI config mode

        wait(1);

        fpga_flash_result = 4;

    }

    OEE = 0;

    OESPI_PORT = c;

    SPI_CS = 1;

    return fpga_flash_result;

}

#include[ztex-fpga-flash2.h]

#endif

#endif  /*ZTEX_FPGA_H*/