git.rot13.org Git - goodfet/blob - client/GoodFETMSP430.py

   1 #!/usr/bin/env python
   2 # GoodFET Client Library
   3 #
   4 # (C) 2009 Travis Goodspeed <travis at radiantmachines.com>
   5 #
   6 # Presently being rewritten.
   7
   8 import sys, time, string, cStringIO, struct, glob, serial, os;
   9
  10 from GoodFET import GoodFET;
  11
  12 class GoodFETMSP430(GoodFET):
  13     #Set APP to be MSP430APP or MSP430X2APP, the latter being preferred.
  14
  15     #0x16 for class, 0x17 for SBW, 0x11 by default
  16     APP=0x11;
  17     MSP430APP=0x11;
  18
  19     CoreID=0;
  20     DeviceID=0;
  21     JTAGID=0;
  22     MSP430ident=0;
  23     def setup(self):
  24         """Move the FET into the MSP430 JTAG application."""
  25         self.writecmd(self.MSP430APP,0x10,0,None);
  26
  27     def MSP430stop(self):
  28         """Stop debugging."""
  29         self.writecmd(self.MSP430APP,0x21,0,self.data);
  30
  31     def MSP430coreid(self):
  32         """Get the Core ID. (MSP430X2 only?)"""
  33         self.writecmd(self.MSP430APP,0xF0);
  34         CoreID=ord(self.data[0])+(ord(self.data[1])<<8);
  35         return CoreID;
  36     def MSP430deviceid(self):
  37         """Get the Device ID. (MSP430X2 only?)"""
  38         self.writecmd(self.MSP430APP,0xF1);
  39         DeviceID=(
  40             ord(self.data[0])+(ord(self.data[1])<<8)+
  41             (ord(self.data[2])<<16)+(ord(self.data[3])<<24));
  42         return DeviceID;
  43     def peek16(self,adr,memory="vn"):
  44         return self.MSP430peek(adr);
  45     def peek8(self,adr, memory="vn"):
  46         adr=self.MSP430peek(adr&~1);
  47         if adr&1==0: return adr&0xFF;
  48         else: return adr>>8;
  49     def MSP430peek(self,adr):
  50         """Read a word at an address."""
  51         self.data=[adr&0xff, (adr&0xff00)>>8,
  52                    (adr&0xff0000)>>16,(adr&0xff000000)>>24,
  53                    ];
  54         self.writecmd(self.MSP430APP,0x02,4,self.data);
  55         #print "Got %i bytes peeking 0x%04x." % (len(self.data),adr);
  56         return ord(self.data[0])+(ord(self.data[1])<<8);
  57     def MSP430peekblock(self,adr):
  58         """Grab a few block from an SPI Flash ROM.  Block size is unknown"""
  59         data=[adr&0xff, (adr&0xff00)>>8,
  60               (adr&0xff0000)>>16,(adr&0xff000000)>>24,
  61               0x00,0x04];
  62         self.writecmd(self.MSP430APP,0x02,6,data);
  63         return self.data;
  64
  65     def MSP430poke(self,adr,val):
  66         """Write the contents of memory at an address."""
  67         self.data=[adr&0xff, (adr&0xff00)>>8,
  68                    (adr&0xff0000)>>16,(adr&0xff000000)>>24,
  69                    val&0xff, (val&0xff00)>>8];
  70         self.writecmd(self.MSP430APP,0x03,6,self.data);
  71         written=ord(self.data[0])+(ord(self.data[1])<<8);
  72         if(written!=val):
  73             print "Failed to write 0x%04x to 0x%04x" % (val,adr);
  74         return written;
  75     def MSP430pokeflash(self,adr,val):
  76         """Write the contents of flash memory at an address."""
  77         self.data=[adr&0xff, (adr&0xff00)>>8,
  78                    (adr&0xff0000)>>16,(adr&0xff000000)>>24,
  79                    val&0xff, (val&0xff00)>>8];
  80         self.writecmd(self.MSP430APP,0xE1,6,self.data);
  81         return ord(self.data[0])+(ord(self.data[1])<<8);
  82     def MSP430pokeflashblock(self,adr,data):
  83         """Write many words to flash memory at an address."""
  84         self.data=[adr&0xff, (adr&0xff00)>>8,
  85                    (adr&0xff0000)>>16,(adr&0xff000000)>>24]+data;
  86         #print "Writing %i bytes to %x" % (len(data),adr);
  87         #print "%2x %2x %2x %2x ..." % (data[0], data[1], data[2], data[3]);
  88         self.writecmd(self.MSP430APP,0xE1,len(self.data),self.data);
  89         return ord(self.data[0])+(ord(self.data[1])<<8);
  90     def start(self):
  91         """Start debugging."""
  92         self.writecmd(self.MSP430APP,0x20,0,self.data);
  93         self.JTAGID=ord(self.data[0]);
  94         if(not (self.JTAGID==0x89 or self.JTAGID==0x91)):
  95             #Try once more
  96             self.writecmd(self.MSP430APP,0x20,0,self.data);
  97             self.JTAGID=ord(self.data[0]);
  98
  99         #print "Identified as %02x." % self.JTAGID;
 100         if(not (self.JTAGID==0x89 or self.JTAGID==0x91)):
 101             print "Error, misidentified as %02x.\nCheck wiring, as this should be 0x89 or 0x91." % self.JTAGID;
 102         self.MSP430haltcpu();
 103     def MSP430haltcpu(self):
 104         """Halt the CPU."""
 105         self.writecmd(self.MSP430APP,0xA0,0,self.data);
 106     def MSP430releasecpu(self):
 107         """Resume the CPU."""
 108         self.writecmd(self.MSP430APP,0xA1,0,self.data);
 109     def MSP430shiftir8(self,ins):
 110         """Shift the 8-bit Instruction Register."""
 111         data=[ins];
 112         self.writecmd(self.MSP430APP,0x80,1,data);
 113         return ord(self.data[0]);
 114     def MSP430shiftdr16(self,dat):
 115         """Shift the 16-bit Data Register."""
 116         data=[dat&0xFF,(dat&0xFF00)>>8];
 117         self.writecmd(self.MSP430APP,0x81,2,data);
 118         return ord(self.data[0])#+(ord(self.data[1])<<8);
 119     def MSP430setinstrfetch(self):
 120         """Set the instruction fetch mode."""
 121         self.writecmd(self.MSP430APP,0xC1,0,self.data);
 122         return self.data[0];
 123     def MSP430ident(self):
 124         """Grab self-identification word from 0x0FF0 as big endian."""
 125         ident=0x00;
 126         if(self.JTAGID==0x89):
 127             i=self.MSP430peek(0x0ff0);
 128             ident=((i&0xFF00)>>8)+((i&0xFF)<<8)
 129
 130         if(self.JTAGID==0x91):
 131             i=self.MSP430peek(0x1A04);
 132             ident=((i&0xFF00)>>8)+((i&0xFF)<<8)
 133             #ident=0x0091;
 134
 135         return ident;
 136     def MSP430identstr(self):
 137         """Grab model string."""
 138         return self.MSP430devices.get(self.MSP430ident());
 139     MSP430devices={
 140         #MSP430F2xx
 141         0xf227: "MSP430F22xx",
 142         0xf213: "MSP430F21x1",
 143         0xf249: "MSP430F24x",
 144         0xf26f: "MSP430F261x",
 145         0xf237: "MSP430F23x0",
 146         0xf201: "MSP430F201x",
 147
 148         #MSP430F1xx
 149         0xf16c: "MSP430F161x",
 150         0xf149: "MSP430F13x",  #or f14x(1)
 151         0xf112: "MSP430F11x",  #or f11x1
 152         0xf143: "MSP430F14x",
 153         0xf112: "MSP430F11x",  #or F11x1A
 154         0xf123: "MSP430F1xx",  #or F123x
 155         0x1132: "MSP430F1122", #or F1132
 156         0x1232: "MSP430F1222", #or F1232
 157         0xf169: "MSP430F16x",
 158
 159         #MSP430F4xx
 160         0xF449: "MSP430F43x", #or F44x
 161         0xF427: "MSP430FE42x", #or FW42x, F415, F417
 162         0xF439: "MSP430FG43x",
 163         0xf46f: "MSP430FG46xx", #or F471xx
 164
 165         }
 166     def MSP430test(self):
 167         """Test MSP430 JTAG.  Requires that a chip be attached."""
 168
 169         if self.MSP430ident()==0xffff:
 170             print "ERROR Is anything connected?";
 171         print "Testing %s." % self.MSP430identstr();
 172         print "Testing RAM from 200 to 210.";
 173         for a in range(0x200,0x210):
 174             self.MSP430poke(a,0);
 175             if(self.MSP430peek(a)!=0):
 176                 print "Fault at %06x" % a;
 177             self.MSP430poke(a,0xffff);
 178             if(self.MSP430peek(a)!=0xffff):
 179                 print "Fault at %06x" % a;
 180
 181         print "Testing identity consistency."
 182         ident=self.MSP430ident();
 183         for a in range(1,20):
 184             ident2=self.MSP430ident();
 185             if ident!=ident2:
 186                 print "Identity %04x!=%04x" % (ident,ident2);
 187
 188         print "Testing flash erase."
 189         self.MSP430masserase();
 190         for a in range(0xffe0, 0xffff):
 191             if self.MSP430peek(a)!=0xffff:
 192                 print "%04x unerased, equals %04x" % (
 193                     a, self.MSP430peek(a));
 194
 195         print "Testing flash write."
 196         for a in range(0xffe0, 0xffff):
 197             self.MSP430pokeflash(a,0xbeef);
 198             if self.MSP430peek(a)!=0xbeef:
 199                 print "%04x unset, equals %04x" % (
 200                     a, self.MSP430peek(a));
 201
 202         print "Tests complete, erasing."
 203         self.MSP430masserase();
 204
 205     def MSP430masserase(self):
 206         """Erase MSP430 flash memory."""
 207         self.writecmd(self.MSP430APP,0xE3,0,None);
 208     def MSP430infoerase(self):
 209         """Erase MSP430 info flash."""
 210         self.writecmd(self.MSP430APP,0xE8,0,None);
 211
 212     def MSP430setPC(self, pc):
 213         """Set the program counter."""
 214         self.writecmd(self.MSP430APP,0xC2,2,[pc&0xFF,(pc>>8)&0xFF]);
 215     def MSP430setreg(self,reg,val):
 216         """Set a register."""
 217         self.writecmd(self.MSP430APP,0xD2,3,[reg,val&0xFF,(val>>8)&0xFF]);
 218     def MSP430getreg(self,reg):
 219         """Get a register."""
 220         self.writecmd(self.MSP430APP,0xD3,1,[reg]);
 221         return ord(self.data[0])+(ord(self.data[1])<<8);
 222
 223     def MSP430run(self):
 224         """Reset the MSP430 to run on its own."""
 225         self.writecmd(self.MSP430APP,0x21,0,None);
 226     def MSP430dumpbsl(self):
 227         self.MSP430dumpmem(0xC00,0xfff);
 228     def MSP430dumpallmem(self):
 229         self.MSP430dumpmem(0x200,0xffff);
 230     def MSP430dumpmem(self,begin,end):
 231         i=begin;
 232         while i<end:
 233             print "%04x %04x" % (i, self.MSP430peek(i));
 234             i+=2;