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git://projects.qi-hardware.com/nn-usb-fpga.git
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67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
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/* Spartan3 JTAG programming algorithms
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Copyright (C) 2004 Andrew Rogers
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#include "progalgxc3s.h"
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const byte ProgAlgXC3S::JPROGRAM=0x0b;
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const byte ProgAlgXC3S::CFG_IN=0x05;
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const byte ProgAlgXC3S::JSHUTDOWN=0x0d;
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const byte ProgAlgXC3S::JSTART=0x0c;
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const byte ProgAlgXC3S::BYPASS=0x3f;
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ProgAlgXC3S::ProgAlgXC3S(Jtag &j, IOBase &i)
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{
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jtag=&j;
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io=&i;
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}
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int ProgAlgXC3S::program(BitFile &file)
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{
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jtag->shiftIR(&JPROGRAM);
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jtag->shiftIR(&CFG_IN);
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byte init[24];
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jtag->longToByteArray(0xffffffff,&init[0]); // Sync
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jtag->longToByteArray(0x66aa9955,&init[4]); // Sync
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jtag->longToByteArray(0x8001000c,&init[8]); // CMD
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jtag->longToByteArray(0xe0000000,&init[12]); // Clear CRC
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jtag->longToByteArray(0x00000000,&init[16]); // Flush
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jtag->longToByteArray(0x00000000,&init[20]); // Flush
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jtag->shiftDR(init,0,192,32); // Align to 32 bits.
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jtag->shiftIR(&JSHUTDOWN);
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io->cycleTCK(12);
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jtag->shiftIR(&CFG_IN);
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byte hdr[12];
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jtag->longToByteArray(0x8001000c,&hdr[0]); // CMD
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jtag->longToByteArray(0x10000000,&hdr[4]); // Assert GHIGH
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jtag->longToByteArray(0x00000000,&hdr[8]); // Flush
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jtag->shiftDR(hdr,0,96,32,false); // Align to 32 bits and do not goto EXIT1-DR
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jtag->shiftDR(file.getData(),0,file.getLength());
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io->tapTestLogicReset();
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io->setTapState(IOBase::RUN_TEST_IDLE);
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jtag->shiftIR(&JSTART);
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io->cycleTCK(12);
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jtag->shiftIR(&BYPASS); // Don't know why, but without this the FPGA will not reconfigure from Flash when PROG is asserted.
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printf("Done\n");
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}
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