3 #GoodFET SPI Flash Client
7 #Might be Winbond W25x80-specific.
13 from GoodFETSPI import GoodFETSPIFlash;
14 from intelhex import IntelHex;
17 print "Usage: %s verb [objects]\n" % sys.argv[0];
18 print "%s info" % sys.argv[0];
19 print "%s dump $foo.hex [0x$start 0x$stop]" % sys.argv[0];
20 print "%s erase" % sys.argv[0];
21 print "%s flash $foo.hex [0x$start 0x$stop]" % sys.argv[0];
22 print "%s verify $foo.hex [0x$start 0x$stop]" % sys.argv[0];
23 print "%s peek 0x$start [0x$stop]" % sys.argv[0];
24 print "%s poke 0x$adr 0x$val" % sys.argv[0];
27 #Initialize FET and set baud rate
28 client=GoodFETSPIFlash();
35 #Might read as all ones if chip has a startup delay.
38 if(sys.argv[1]=="test"):
42 data=client.SPIjedec();
43 if ord(data[1])==0xFF:
48 print "Connection Test: (- is bad)\n%s" % result;
49 print "%i misreads" % dropped;
51 print "No successful reads. Is the chip wired correctly?";
53 print "Some success, some failures. Is a wire loose?";
55 print "All reads succeeded. Wiring is probably good.";
57 if(sys.argv[1]=="info"):
58 data=client.SPIjedec();
59 print "Ident as %s\nManufacturer: %02x %s\nType: %02x\nCapacity: %02x (%i bytes)" % (
61 ord(data[1]),client.SPIjedecmanstr(),
66 if(sys.argv[1]=="dump"):
69 stop=client.JEDECsize;
71 start=int(sys.argv[3],16);
73 stop=int(sys.argv[4],16);
75 print "Dumping code from %06x to %06x as %s." % (start,stop,f);
76 file = open(f, mode='wb')
80 data=client.SPIpeekblock(i,255);
82 print "Dumped %06x."%i;
84 if i<stop: file.write(j);
88 if(sys.argv[1]=="verify"):
91 stop=client.JEDECsize;
93 start=int(sys.argv[3],16);
95 stop=int(sys.argv[4],16);
97 print "Verifying code from %06x to %06x as %s." % (start,stop,f);
98 file = open(f, mode='rb')
103 data=client.SPIpeekblock(i,255);
104 print "Verified %06x." % i;
107 bits|=ord(file.read(1))^ord(j);
110 print "Bits don't match."
114 if(sys.argv[1]=="flash"):
117 stop=client.JEDECsize;
120 start=int(sys.argv[3],16);
122 stop=int(sys.argv[4],16);
124 print "Flashing code from %06x to %06x with %s." % (start,stop,f);
125 file = open(f, mode='rb')
128 chars=list(file.read());
130 #N.B., chunksize must be an even fraction of 0x100.
134 bytes=range(0,chunksize);
135 for j in range(0,chunksize):
136 bytes[j]=ord(chars[i+j]);
137 client.SPIpokebytes(i,bytes);
141 print "Flashed %06x."%i;
145 if(sys.argv[1]=="erase"):
146 client.SPIchiperase();
148 if(sys.argv[1]=="peek"):
151 start=int(sys.argv[2],16);
154 stop=int(sys.argv[3],16);
155 print "Peeking from %06x to %06x." % (start,stop);
157 print "%06x: %02x" % (start,client.SPIpeek(start));
160 if(sys.argv[1]=="poke"):
164 start=int(sys.argv[2],16);
166 val=int(sys.argv[3],16);
167 print "Poking %06x to become %02x." % (start,val);
169 while client.SPIpeek(start)!=val:
170 client.SPIpokebyte(start,val);
171 print "Poked to %02x" % client.SPIpeek(start);