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 Core 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,address, 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         return ord(self.data[0])+(ord(self.data[1])<<8);
  68     def MSP430pokeflash(self,adr,val):
  69         """Write the contents of flash memory at an address."""
  70         self.data=[adr&0xff, (adr&0xff00)>>8,
  71                    (adr&0xff0000)>>16,(adr&0xff000000)>>24,
  72                    val&0xff, (val&0xff00)>>8];
  73         self.writecmd(self.MSP430APP,0xE1,6,self.data);
  74         return ord(self.data[0])+(ord(self.data[1])<<8);
  75     def MSP430pokeflashblock(self,adr,data):
  76         """Write many words to flash memory at an address."""
  77         self.data=[adr&0xff, (adr&0xff00)>>8,
  78                    (adr&0xff0000)>>16,(adr&0xff000000)>>24]+data;
  79         #print "Writing %i bytes to %x" % (len(data),adr);
  80         #print "%2x %2x %2x %2x ..." % (data[0], data[1], data[2], data[3]);
  81         self.writecmd(self.MSP430APP,0xE1,len(self.data),self.data);
  82         return ord(self.data[0])+(ord(self.data[1])<<8);
  83     def start(self):
  84         """Start debugging."""
  85         self.writecmd(self.MSP430APP,0x20,0,self.data);
  86         self.JTAGID=ord(self.data[0]);
  87         #print "Identified as %02x." % self.JTAGID;
  88         if(not (self.JTAGID==0x89 or self.JTAGID==0x91)):
  89             print "Error, misidentified as %02x." % self.JTAGID;
  90         self.MSP430haltcpu();
  91     def MSP430haltcpu(self):
  92         """Halt the CPU."""
  93         self.writecmd(self.MSP430APP,0xA0,0,self.data);
  94     def MSP430releasecpu(self):
  95         """Resume the CPU."""
  96         self.writecmd(self.MSP430APP,0xA1,0,self.data);
  97     def MSP430shiftir8(self,ins):
  98         """Shift the 8-bit Instruction Register."""
  99         data=[ins];
 100         self.writecmd(self.MSP430APP,0x80,1,data);
 101         return ord(self.data[0]);
 102     def MSP430shiftdr16(self,dat):
 103         """Shift the 16-bit Data Register."""
 104         data=[dat&0xFF,(dat&0xFF00)>>8];
 105         self.writecmd(self.MSP430APP,0x81,2,data);
 106         return ord(self.data[0])#+(ord(self.data[1])<<8);
 107     def MSP430setinstrfetch(self):
 108         """Set the instruction fetch mode."""
 109         self.writecmd(self.MSP430APP,0xC1,0,self.data);
 110         return self.data[0];
 111     def MSP430ident(self):
 112         """Grab self-identification word from 0x0FF0 as big endian."""
 113         ident=0x00;
 114         if(self.JTAGID==0x89):
 115             i=self.MSP430peek(0x0ff0);
 116             ident=((i&0xFF00)>>8)+((i&0xFF)<<8)
 117
 118         if(self.JTAGID==0x91):
 119             i=self.MSP430peek(0x1A04);
 120             ident=((i&0xFF00)>>8)+((i&0xFF)<<8)
 121             #ident=0x0091;
 122
 123         return ident;
 124     def MSP430identstr(self):
 125         """Grab model string."""
 126         return self.MSP430devices.get(self.MSP430ident());
 127     MSP430devices={
 128         #MSP430F2xx
 129         0xf227: "MSP430F22xx",
 130         0xf213: "MSP430F21x1",
 131         0xf249: "MSP430F24x",
 132         0xf26f: "MSP430F261x",
 133         0xf237: "MSP430F23x0",
 134         0xf201: "MSP430F201x",
 135
 136         #MSP430F1xx
 137         0xf16c: "MSP430F161x",
 138         0xf149: "MSP430F13x",  #or f14x(1)
 139         0xf112: "MSP430F11x",  #or f11x1
 140         0xf143: "MSP430F14x",
 141         0xf112: "MSP430F11x",  #or F11x1A
 142         0xf123: "MSP430F1xx",  #or F123x
 143         0x1132: "MSP430F1122", #or F1132
 144         0x1232: "MSP430F1222", #or F1232
 145         0xf169: "MSP430F16x",
 146
 147         #MSP430F4xx
 148         0xF449: "MSP430F43x", #or F44x
 149         0xF427: "MSP430FE42x", #or FW42x, F415, F417
 150         0xF439: "MSP430FG43x",
 151         0xf46f: "MSP430FG46xx", #or F471xx
 152
 153         }
 154     def MSP430test(self):
 155         """Test MSP430 JTAG.  Requires that a chip be attached."""
 156
 157         if self.MSP430ident()==0xffff:
 158             print "ERROR Is anything connected?";
 159         print "Testing %s." % self.MSP430identstr();
 160         print "Testing RAM from 200 to 210.";
 161         for a in range(0x200,0x210):
 162             self.MSP430poke(a,0);
 163             if(self.MSP430peek(a)!=0):
 164                 print "Fault at %06x" % a;
 165             self.MSP430poke(a,0xffff);
 166             if(self.MSP430peek(a)!=0xffff):
 167                 print "Fault at %06x" % a;
 168
 169         print "Testing identity consistency."
 170         ident=self.MSP430ident();
 171         for a in range(1,20):
 172             ident2=self.MSP430ident();
 173             if ident!=ident2:
 174                 print "Identity %04x!=%04x" % (ident,ident2);
 175
 176         print "Testing flash erase."
 177         self.MSP430masserase();
 178         for a in range(0xffe0, 0xffff):
 179             if self.MSP430peek(a)!=0xffff:
 180                 print "%04x unerased, equals %04x" % (
 181                     a, self.MSP430peek(a));
 182
 183         print "Testing flash write."
 184         for a in range(0xffe0, 0xffff):
 185             self.MSP430pokeflash(a,0xbeef);
 186             if self.MSP430peek(a)!=0xbeef:
 187                 print "%04x unset, equals %04x" % (
 188                     a, self.MSP430peek(a));
 189
 190         print "Tests complete, erasing."
 191         self.MSP430masserase();
 192
 193     def MSP430masserase(self):
 194         """Erase MSP430 flash memory."""
 195         self.writecmd(self.MSP430APP,0xE3,0,None);
 196     def MSP430setPC(self, pc):
 197         """Set the program counter."""
 198         self.writecmd(self.MSP430APP,0xC2,2,[pc&0xFF,(pc>>8)&0xFF]);
 199     def MSP430run(self):
 200         """Reset the MSP430 to run on its own."""
 201         self.writecmd(self.MSP430APP,0x21,0,None);
 202     def MSP430dumpbsl(self):
 203         self.MSP430dumpmem(0xC00,0xfff);
 204     def MSP430dumpallmem(self):
 205         self.MSP430dumpmem(0x200,0xffff);
 206     def MSP430dumpmem(self,begin,end):
 207         i=begin;
 208         while i<end:
 209             print "%04x %04x" % (i, self.MSP430peek(i));
 210             i+=2;