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/* JTAG chain device database
Copyright (C) 2004 Andrew Rogers
This program 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 of the License, or
(at your option) any later version.
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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Changes:
Dmitry Teytelman [dimtey@gmail.com] 19 May 2006 [applied 13 Aug 2006]:
Code cleanup for clean -Wall compile.
Modified loadDevice() to ignore 4 MSBs of IDCODE - used for device
revision code.
*/
#ifndef DEVICEDB
#define DEVICEDB "devlist.txt"
#endif
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <cstdio>
#include "devicedb.h"
#include "devices.h"
using namespace std;
DeviceDB::DeviceDB(const char *fname)
{
// Fall back to environment or default if no file specified
if (!fname)
{
fname = getenv("XCDB");
if (!fname)
fname = DEVICEDB;
}
FILE *fp=fopen(fname,"rt");
if(fp)
{
// Read device list from file.
filename = fname;
int lineno = 0;
while (!feof(fp))
{
char buffer[256];
// read next line from file
if (fgets(buffer,256,fp) == NULL)
break;
lineno++;
if (parseLine(buffer) != 0)
fprintf(stderr, "ERROR: Invalid syntax in device list '%s' line %d\n", fname, lineno);
}
fclose(fp);
}
else
{
// Read devce list from built-in data.
const char *p = fb_string;
filename = "built-in device list";
int lineno = 0;
while (*p != '\0')
{
char buffer[256];
unsigned int i;
for (i = 0; i < sizeof(buffer) - 1; i++)
{
if (p[i] == '\0' || p[i] == ';')
break;
buffer[i] = p[i];
}
buffer[i] = '\0';
p += i;
if (*p == ';')
p++;
lineno++;
if (parseLine(buffer) != 0)
fprintf(stderr, "ERROR: Invalid syntax in built-in device list line %d\n", lineno);
}
}
}
// Parse one line from a device list file.
// If the file contains a device description, add it to the database.
// Return 0 on success, -1 on error.
int DeviceDB::parseLine(const char *linebuf)
{
// ignore comment lines
if (linebuf[0] == '#')
return 0;
// ignore empty lines
for (unsigned int i = 0; ; i++)
{
if (linebuf[i] == '\0')
return 0;
if (!isspace(linebuf[i]))
break;
}
device_t dev;
unsigned int idcode;
int irlen;
unsigned int id_cmd;
// allocate buffer for description
vector<char> textvec(strlen(linebuf) + 1);
char *textbuf = &(textvec.front());
// parse line: idcode, irlength, idcommand, description
if (sscanf(linebuf, "%08x %d %x %s", &idcode, &irlen, &id_cmd, textbuf) != 4)
return -1;
// add to database
dev.idcode = idcode & 0x0fffffff;
dev.irlen = irlen;
dev.id_cmd = id_cmd;
dev.text = string(textbuf);
dev_db.push_back(dev);
return 0;
}
// Find the device with specified IDCODE and return its properties.
const DeviceDB::device_t * DeviceDB::findDevice(DeviceID idcode)
{
// look in list of recently used devices
for (unsigned int i = 0, n = dev_used.size(); i < n; i++)
{
if ((idcode & 0x0fffffff) == dev_used[i]->idcode)
return dev_used[i];
}
// look in list of all devices
for (unsigned int i = 0, n = dev_db.size(); i < n; i++)
{
if ((idcode & 0x0fffffff) == dev_db[i].idcode)
{
dev_used.push_back(&(dev_db[i]));
return &(dev_db[i]);
}
}
// unknown device
return NULL;
}
// Find the device with specified IDCODE and return its IR length,
// or return 0 if the IDCODE is unknown.
int DeviceDB::idToIRLength(DeviceID idcode)
{
const device_t *dev = findDevice(idcode);
return (dev) ? (dev->irlen) : 0;
}
// Find the device with specified IDCODE and returns its IDCODE instruction.
uint32_t DeviceDB::idToIDCmd(DeviceID idcode)
{
const device_t *dev = findDevice(idcode);
return (dev) ? (dev->id_cmd) : 0;
}
// Find the device with specified IDCODE and return a description,
// or return NULL if the IDCODE is unknown.
const char * DeviceDB::idToDescription(DeviceID idcode)
{
const device_t *dev = findDevice(idcode);
return (dev) ? (dev->text.c_str()) : NULL;
}
int DeviceDB::dumpDevices(FILE *fp_out) const
{
unsigned int i;
for(i = 0; i < dev_db.size(); i++)
fprintf(fp_out,"%08x %6d 0x%04x %s\n",
(unsigned int)dev_db[i].idcode,
dev_db[i].irlen,
(unsigned int)dev_db[i].id_cmd,
dev_db[i].text.c_str());
return 0;
}
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