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