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c46bad77
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Christian Daniel
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/**************************************************************
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*
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* Lattice Semiconductor Corp. Copyright 2008
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*
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*
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***************************************************************/
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/**************************************************************
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*
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* Revision History of slim_vme.c
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*
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*
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* 09/11/07 NN Updated to support version 1.3
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* This version supported new POLING STATUS LOOP opcodes (LOOP and ENDLOOP)
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* for Flash programming of the Lattice FPGA devices
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* 09/11/07 NN Added Global variables initialization
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* 09/11/07 NN type cast all mismatch variables
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***************************************************************/
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#include <stdlib.h>
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#include "opcode.h"
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#include "hardware.h"
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#define xdata
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#define reentrant
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/*************************************************************
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* *
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* EXTERNAL FUNCTIONS *
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* *
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*************************************************************/
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unsigned char GetByte(int a_iCurrentIndex, char a_cAlgo, int output);
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extern short ispProcessVME();
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extern void EnableHardware();
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extern void DisableHardware();
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/***************************************************************
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*
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* Supported VME versions.
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*
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***************************************************************/
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char *g_szSupportedVersions[] = { "_SVME1.1", "_SVME1.2", "_SVME1.3", 0 };
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/*************************************************************
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* *
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* EXTERNAL VARIABLES *
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* *
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* If the algorithm does not require the data, then *
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* declare the variables g_pucDataArray and g_iDataSize *
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* as local variables and set them to NULL and 0, *
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* respectively. *
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* *
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* Example: *
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* xdata unsigned char * g_pucDataArray = NULL; *
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* xdata int g_iDataSize = 0; *
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* *
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*************************************************************/
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extern int g_iMovingAlgoIndex;
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extern int g_iMovingDataIndex;
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extern unsigned short g_usDataType;
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/*************************************************************
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* *
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* ISPVMENTRYPOINT *
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* *
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* INPUT: *
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* a_pszAlgoFile: this is the name of the algorithm file. *
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* *
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* a_pszDataFile: this is the name of the data file. *
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* Note that this argument may be empty if the algorithm *
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* does not require a data file. *
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* *
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* RETURN: *
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* The return value will be a negative number if an error *
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* occurred, or 0 if everything was successful *
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* *
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* DESCRIPTION: *
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* This function opens the file pointers to the algo and *
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* data file. It intializes global variables to their *
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* default values and enters the processor. *
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* *
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*************************************************************/
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short int ispEntryPoint()
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{
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char szFileVersion[ 9 ] = { 0 };
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short int siRetCode = 0;
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short int iIndex = 0;
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short int cVersionIndex = 0;
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/*************************************************************
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* *
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* VARIABLES INITIALIZATION *
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* *
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*************************************************************/
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g_usDataType = 0;
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g_iMovingAlgoIndex = 0;
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g_iMovingDataIndex = 0;
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if ( g_ispDataSize ) {
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if ( GetByte( g_iMovingDataIndex++, 0, 1) ) {
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g_usDataType |= COMPRESS;
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}
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}
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/***************************************************************
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*
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* Read and store the version of the VME file.
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*
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***************************************************************/
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for ( iIndex = 0; iIndex < 8; iIndex++ ) {
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szFileVersion[ iIndex ] = GetByte( g_iMovingAlgoIndex++, 1,0 );
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}
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/***************************************************************
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*
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* Compare the VME file version against the supported version.
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*
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***************************************************************/
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for ( cVersionIndex = 0; g_szSupportedVersions[ cVersionIndex ] != 0; cVersionIndex++ ) {
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for ( iIndex = 0; iIndex < 8; iIndex++ ) {
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if ( szFileVersion[ iIndex ] != g_szSupportedVersions[ cVersionIndex ][ iIndex ] ) {
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siRetCode = ERR_WRONG_VERSION;
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break;
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}
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siRetCode = 0;
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}
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if ( siRetCode == 0 ) {
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/***************************************************************
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*
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* Found matching version, break.
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*
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***************************************************************/
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break;
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}
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}
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if ( siRetCode < 0 ) {
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/***************************************************************
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*
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* VME file version failed to match the supported versions.
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*
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***************************************************************/
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return ERR_WRONG_VERSION;
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}
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/*************************************************************
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* *
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* Start the hardware. *
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* *
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*************************************************************/
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EnableHardware();
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/*************************************************************
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* *
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* Begin processing algorithm and data file. *
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* *
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*************************************************************/
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siRetCode = ispProcessVME();
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/*************************************************************
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* *
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* Stop the hardware. *
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* *
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*************************************************************/
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DisableHardware();
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/*************************************************************
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* *
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* Return the return code. *
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* *
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*************************************************************/
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return ( siRetCode );
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}
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/*************************************************************
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* *
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* MAIN *
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* *
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*************************************************************/
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#if 0
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short int main()
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{
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/*************************************************************
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* *
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* LOCAL VARIABLES: *
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* siRetCode: this variable holds the return. *
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* *
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*************************************************************/
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short int siRetCode = 0;
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/*************************************************************
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* *
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* Pass in the command line arguments to the entry point. *
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* *
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*************************************************************/
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siRetCode = ispEntryPoint();
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return( siRetCode );
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}
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#endif
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