+++ /dev/null
-#!/usr/bin/env python
-# GoodFET SPI and SPIFlash Client Library
-#
-# (C) 2009 Travis Goodspeed <travis at radiantmachines.com>
-#
-# This code is being rewritten and refactored. You've been warned!
-
-import sys, time, string, cStringIO, struct, glob, serial, os;
-
-from GoodFET import GoodFET;
-
-class GoodFETSPI(GoodFET):
- def SPIsetup(self):
- """Move the FET into the SPI application."""
- self.writecmd(0x01,0x10,0,self.data); #SPI/SETUP
-
- def SPItrans8(self,byte):
- """Read and write 8 bits by SPI."""
- data=self.SPItrans([byte]);
- return ord(data[0]);
-
- def SPItrans(self,data):
- """Exchange data by SPI."""
- self.data=data;
- self.writecmd(0x01,0x00,len(data),data);
- return self.data;
-
-class GoodFETSPIFlash(GoodFETSPI):
- JEDECmanufacturers={0xFF: "MISSING",
- 0xEF: "Winbond",
- 0xC2: "MXIC",
- 0x20: "Numonyx/ST",
- 0x1F: "Atmel",
- 0x01: "AMD/Spansion"
- };
-
- JEDECdevices={0xFFFFFF: "MISSING",
- 0xEF3015: "W25X16L",
- 0xEF3014: "W25X80L",
- 0xEF3013: "W25X40L",
- 0xEF3012: "W25X20L",
- 0xEF3011: "W25X10L",
- 0xC22017: "MX25L6405D",
- 0xC22016: "MX25L3205D",
- 0xC22015: "MX25L1605D",
- 0xC22014: "MX25L8005",
- 0xC22013: "MX25L4005",
- 0x204011: "M45PE10"
- };
-
- JEDECsizes={0x17: 0x800000,
- 0x16: 0x400000,
- 0x15: 0x200000,
- 0x14: 0x100000,
- 0x13: 0x080000,
- 0x12: 0x040000,
- 0x11: 0x020000
- };
-
- JEDECsize=0;
-
- def SPIjedec(self):
- """Grab an SPI Flash ROM's JEDEC bytes."""
- data=[0x9f, 0, 0, 0];
- data=self.SPItrans(data);
-
- self.JEDECmanufacturer=ord(data[1]);
- self.JEDECtype=ord(data[2]);
- self.JEDECcapacity=ord(data[3]);
- self.JEDECsize=self.JEDECsizes.get(self.JEDECcapacity);
- if self.JEDECsize==None:
- self.JEDECsize=0;
- self.JEDECdevice=(ord(data[1])<<16)+(ord(data[2])<<8)+ord(data[3]);
- return data;
- def SPIpeek(self,adr):
- """Grab a byte from an SPI Flash ROM."""
- data=[0x03,
- (adr&0xFF0000)>>16,
- (adr&0xFF00)>>8,
- adr&0xFF,
- 0];
- self.SPItrans(data);
- return ord(self.data[4]);
- def SPIpeekblock(self,adr):
- """Grab a few block from an SPI Flash ROM. Block size is unknown"""
- data=[(adr&0xFF0000)>>16,
- (adr&0xFF00)>>8,
- adr&0xFF];
-
- self.writecmd(0x01,0x02,3,data);
- return self.data;
-
- def SPIpokebyte(self,adr,val):
- self.SPIpokebytes(adr,[val]);
- def SPIpokebytes(self,adr,data):
- #Used to be 24 bits, BE, not 32 bits, LE.
- adranddata=[adr&0xFF,
- (adr&0xFF00)>>8,
- (adr&0xFF0000)>>16,
- 0, #MSB
- ]+data;
- #print "%06x: poking %i bytes" % (adr,len(data));
- self.writecmd(0x01,0x03,
- len(adranddata),adranddata);
-
- def SPIchiperase(self):
- """Mass erase an SPI Flash ROM."""
- self.writecmd(0x01,0x81);
- def SPIwriteenable(self):
- """SPI Flash Write Enable"""
- data=[0x06];
- self.SPItrans(data);
-
- def SPIjedecmanstr(self):
- """Grab the JEDEC manufacturer string. Call after SPIjedec()."""
- man=self.JEDECmanufacturers.get(self.JEDECmanufacturer)
- if man==0:
- man="UNKNOWN";
- return man;
-
- def SPIjedecstr(self):
- """Grab the JEDEC manufacturer string. Call after SPIjedec()."""
- man=self.JEDECmanufacturers.get(self.JEDECmanufacturer);
- if man==0:
- man="UNKNOWN";
- device=self.JEDECdevices.get(self.JEDECdevice);
- if device==0:
- device="???"
- return "%s %s" % (man,device);
-