/*!
|
/*!
|
ZTEX Firmware Kit for EZ-USB FX2 Microcontrollers
|
ZTEX Firmware Kit for EZ-USB FX2 Microcontrollers
|
Copyright (C) 2009-2011 ZTEX GmbH.
|
Copyright (C) 2009-2014 ZTEX GmbH.
|
http://www.ztex.de
|
http://www.ztex.de
|
|
|
This program is free software; you can redistribute it and/or modify
|
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
|
it under the terms of the GNU General Public License version 3 as
|
published by the Free Software Foundation.
|
published by the Free Software Foundation.
|
|
|
This program is distributed in the hope that it will be useful, but
|
This program is distributed in the hope that it will be useful, but
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
General Public License for more details.
|
General Public License for more details.
|
|
|
You should have received a copy of the GNU General Public License
|
You should have received a copy of the GNU General Public License
|
along with this program; if not, see http://www.gnu.org/licenses/.
|
along with this program; if not, see http://www.gnu.org/licenses/.
|
!*/
|
!*/
|
|
|
/*
|
/*
|
Common functions for FPGA configuration from SPI flash
|
Common functions for FPGA configuration from SPI flash
|
*/
|
*/
|
|
|
__code BYTE fpga_flash_boot_id[] = {'Z','T','E', 'X', 'B', 'S', '\1', '\1'};
|
__code BYTE fpga_flash_boot_id[] = {'Z','T','E', 'X', 'B', 'S', '\1', '\1'};
|
|
|
/* *********************************************************************
|
/* *********************************************************************
|
***** fpga_first_free_sector ****************************************
|
***** fpga_first_free_sector ****************************************
|
********************************************************************* */
|
********************************************************************* */
|
// First free sector. Returns 0 if no boot sector exeists.
|
// First free sector. Returns 0 if no boot sector exeists.
|
// Use the macro FLASH_FIRST_FREE_SECTOR instead of this function.
|
// Use the macro FLASH_FIRST_FREE_SECTOR instead of this function.
|
#define[FLASH_FIRST_FREE_SECTOR][fpga_first_free_sector()];
|
#define[FLASH_FIRST_FREE_SECTOR][fpga_first_free_sector()];
|
WORD fpga_first_free_sector() {
|
WORD fpga_first_free_sector() {
|
BYTE i,j;
|
BYTE i,j;
|
#ifdef[@CAPABILITY_MAC_EEPROM;]
|
#ifdef[@CAPABILITY_MAC_EEPROM;]
|
__xdata WORD buf[2];
|
__xdata WORD buf[2];
|
|
|
if ( config_data_valid ) {
|
if ( config_data_valid ) {
|
mac_eeprom_read ( (__xdata BYTE*) buf, 26, 4 ); // read actual and max bitstream size
|
mac_eeprom_read ( (__xdata BYTE*) buf, 26, 4 ); // read actual and max bitstream size
|
if ( buf[1] != 0 ) {
|
if ( buf[1] != 0 ) {
|
return ( ( ( buf[1] > buf[0] ? buf[1] : buf[0] ) - 1 ) >> ((flash_sector_size & 255) - 12) ) + 1;
|
return ( ( ( buf[1] > buf[0] ? buf[1] : buf[0] ) - 1 ) >> ((flash_sector_size & 255) - 12) ) + 1;
|
}
|
}
|
}
|
}
|
#endif
|
#endif
|
flash_read_init( 0 ); // prepare reading sector 0
|
flash_read_init( 0 ); // prepare reading sector 0
|
for ( i=0; i<8 && flash_read_byte()==fpga_flash_boot_id[i]; i++ );
|
for ( i=0; i<8 && flash_read_byte()==fpga_flash_boot_id[i]; i++ );
|
if ( i != 8 ) {
|
if ( i != 8 ) {
|
flash_read_finish(flash_sector_size - i); // dummy-read the rest of the sector + finish read opration
|
flash_read_finish(flash_sector_size - i); // dummy-read the rest of the sector + finish read opration
|
return 0;
|
return 0;
|
}
|
}
|
i=flash_read_byte();
|
i=flash_read_byte();
|
j=flash_read_byte();
|
j=flash_read_byte();
|
flash_read_finish(flash_sector_size - 10); // dummy-read the rest of the sector + finish read opration
|
flash_read_finish(flash_sector_size - 10); // dummy-read the rest of the sector + finish read opration
|
|
|
return (i | (j<<8))+1;
|
return (i | (j<<8))+1;
|
}
|
}
|
|
|
/* *********************************************************************
|
/* *********************************************************************
|
***** fpga_configure_from_flash_init ********************************
|
***** fpga_configure_from_flash_init ********************************
|
********************************************************************* */
|
********************************************************************* */
|
// this function is called by init_USB;
|
// this function is called by init_USB;
|
BYTE fpga_configure_from_flash_init() {
|
BYTE fpga_configure_from_flash_init() {
|
BYTE i;
|
BYTE i;
|
|
|
#ifdef[@CAPABILITY_MAC_EEPROM;]
|
#ifdef[@CAPABILITY_MAC_EEPROM;]
|
__xdata WORD buf[2];
|
__xdata WORD buf[2];
|
|
|
if ( config_data_valid ) {
|
if ( config_data_valid ) {
|
mac_eeprom_read ( (__xdata BYTE*) buf, 26, 4 ); // read actual and max bitstream size
|
mac_eeprom_read ( (__xdata BYTE*) buf, 26, 4 ); // read actual and max bitstream size
|
if ( buf[1] != 0 ) {
|
if ( buf[1] != 0 ) {
|
if ( buf[0] == 0 ) {
|
if ( buf[0] == 0 ) {
|
return fpga_flash_result = 3;
|
return fpga_flash_result = 3;
|
}
|
}
|
// return 10;
|
// return 10;
|
goto flash_config;
|
goto flash_config;
|
}
|
}
|
// return 15;
|
// return 15;
|
}
|
}
|
#endif
|
#endif
|
|
|
// read the boot sector
|
// read the boot sector
|
if ( flash_read_init( 0 ) ) // prepare reading sector 0
|
if ( flash_read_init( 0 ) ) // prepare reading sector 0
|
return fpga_flash_result = 2;
|
return fpga_flash_result = 2;
|
for ( i=0; i<8 && flash_read_byte()==fpga_flash_boot_id[i]; i++ );
|
for ( i=0; i<8 && flash_read_byte()==fpga_flash_boot_id[i]; i++ );
|
if ( i != 8 ) {
|
if ( i != 8 ) {
|
flash_read_finish(flash_sector_size - i); // dummy-read the rest of the sector + finish read opration
|
flash_read_finish(flash_sector_size - i); // dummy-read the rest of the sector + finish read opration
|
return fpga_flash_result = 3;
|
return fpga_flash_result = 3;
|
}
|
}
|
i = flash_read_byte();
|
i = flash_read_byte();
|
i |= flash_read_byte();
|
i |= flash_read_byte();
|
flash_read_finish(flash_sector_size - 10); // dummy-read the rest of the sector + finish read opration
|
flash_read_finish(flash_sector_size - 10); // dummy-read the rest of the sector + finish read opration
|
if ( i==0 )
|
if ( i==0 )
|
return fpga_flash_result = 3;
|
return fpga_flash_result = 3;
|
|
|
flash_config:
|
flash_config:
|
fpga_flash_result = fpga_configure_from_flash(0);
|
fpga_flash_result = fpga_configure_from_flash(0);
|
if ( fpga_flash_result == 1 ) {
|
if ( fpga_flash_result == 1 ) {
|
post_fpga_config();
|
post_fpga_config();
|
}
|
}
|
else if ( fpga_flash_result == 4 ) {
|
else if ( fpga_flash_result == 4 ) {
|
fpga_flash_result = fpga_configure_from_flash(0); // up to two tries
|
fpga_flash_result = fpga_configure_from_flash(0); // up to two tries
|
}
|
}
|
return fpga_flash_result;
|
return fpga_flash_result;
|
}
|
}
|
|
|
#define[INIT_CMDS;][INIT_CMDS;
|
#define[INIT_CMDS;][INIT_CMDS;
|
fpga_flash_result= 255;
|
fpga_flash_result= 255;
|
|
|
