jtagarm: a few cleanup things...

[goodfet] / client / GoodFETSPI.py

diff --git a/client/GoodFETSPI.py b/client/GoodFETSPI.py
index bd28019..b071d50 100644 (file)
--- a/client/GoodFETSPI.py
+++ b/client/GoodFETSPI.py
@@ -5,11 +5,12 @@
 #
 # This code is being rewritten and refactored.  You've been warned!
 
-import sys, time, string, cStringIO, struct, glob, serial, os;
+import sys, time, string, cStringIO, struct, glob, os;
 
 from GoodFET import GoodFET;
 
 class GoodFETSPI(GoodFET):
+    APP=0x01;
     def SPIsetup(self):
         """Move the FET into the SPI application."""
         self.writecmd(0x01,0x10,0,self.data); #SPI/SETUP
@@ -25,12 +26,28 @@ class GoodFETSPI(GoodFET):
         self.writecmd(0x01,0x00,len(data),data);
         return self.data;
 
+class GoodFETSPI25C(GoodFETSPI):
+    #opcodes
+    WREN=0x06;
+    WRDI=0x04;
+    RDSR=0x05;
+    WRSR=0x01;
+    READ=0x03;
+    WRITE=0x02;
+    
+    def peek8(self,adr,memory="vn"):
+        """Read a byte from the given address."""
+        data=self.SPItrans([self.READ,(adr>>8)&0xFF,adr&0xFF,0x00]);
+        return ord(data[3]);
+
+
 class GoodFETSPIFlash(GoodFETSPI):
     JEDECmanufacturers={0xFF: "MISSING",
                         0xEF: "Winbond",
                         0xC2: "MXIC",
                         0x20: "Numonyx/ST",
-                        0x1F: "Atmel"
+                        0x1F: "Atmel",
+                        0x01: "AMD/Spansion"
                         };
 
     JEDECdevices={0xFFFFFF: "MISSING",
@@ -44,7 +61,9 @@ class GoodFETSPIFlash(GoodFETSPI):
                   0xC22015: "MX25L1605D",
                   0xC22014: "MX25L8005",
                   0xC22013: "MX25L4005",
-                  0x204011: "M45PE10"
+                  0x204011: "M45PE10",
+                  0x202014: "M25P80",
+                  0x1f4501: "AT24DF081",
                   };
     
     JEDECsizes={0x17: 0x800000,
@@ -59,17 +78,27 @@ class GoodFETSPIFlash(GoodFETSPI):
     JEDECsize=0;
 
     def SPIjedec(self):
-        """Grab an SPI Flash ROM's JEDEC bytes."""
+        """Grab an SPI Flash ROM's JEDEC bytes.  Some chips don't implement
+        this, such as Numonyx M25P* except in the 110nm processed."""
         data=[0x9f, 0, 0, 0];
         data=self.SPItrans(data);
-        
+        jedec=0;
         self.JEDECmanufacturer=ord(data[1]);
-        self.JEDECtype=ord(data[2]);
-        self.JEDECcapacity=ord(data[3]);
+        if self.JEDECmanufacturer==0xFF:
+            self.JEDECtype=0x20;
+            self.JEDECcapacity=0x14;
+            jedec=0x202014;
+        else:
+            self.JEDECtype=ord(data[2]);
+            self.JEDECcapacity=ord(data[3]);
+            jedec=(ord(data[1])<<16)+(ord(data[2])<<8)+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]);
+        
+        if jedec==0x1F4501:
+            self.JEDECsize=1024**2;
+        self.JEDECdevice=jedec;
         return data;
     def SPIpeek(self,adr):
         """Grab a byte from an SPI Flash ROM."""