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