Extend prodsig and sernum to virtually all classic parts

avrdudes · Jul 14, 2024 · 96e92ba · 96e92ba
1 parent 7fbd963
commit 96e92ba
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Showing 3 changed files with 53 additions and 33 deletions.
diff --git a/src/avrdude.1 b/src/avrdude.1
@@ -847,11 +847,17 @@ Low fuse byte
 .It   lock
 Lock byte
 .It prodsig
-Signature, calibration byte and serial number in a small read-only memory,
+Signature, calibration byte(s) and serial number in a small read-only memory,
 which is only documented to be available for ATmega324PB, ATmega328PB,
-ATtiny102 and ATtiny104; programmers may or may not be able to read this memory
+ATtiny102 and ATtiny104;
+.Nm
+generally tries to make this memory available, also for parts where it is
+not documented, but not all programmers may be able to read this memory
 .It sigrow
 Memory alias for prodsig
+.It sernum
+The serial number part of prodsig; owing to scarce documentation this may not
+actually turn out to be a serial number or be readable by some programmers
 .It usersig
 Three extra flash pages for firmware settings; this memory is not erased
 during a chip erase. Only some classic parts,

diff --git a/src/avrdude.conf.in b/src/avrdude.conf.in
@@ -3784,10 +3784,25 @@ part parent ".classic-nocal" # .classic
     chip_erase             = "1010.1100--1000.0000--0000.0000--0000.0000";
     pgm_enable             = "1010.1100--0101.0011--0000.0000--0000.0000";
 
+    memory "prodsig"
+        size               = 24;
+        read               = "0 0 1 1 a0 0 0 0  0 0 0 0 0 0 0 0  0 0 0 0 a4 a3 a2 a1  o o o o o o o o";
+    ;
+
+    memory "sigrow"
+        alias "prodsig";
+    ;
+
     memory "calibration"
         size               = 1;
         read               = "0011.1000--0000.0000--0000.0000--oooo.oooo";
     ;
+
+    memory "sernum"
+        size               = 10;
+        offset             = 0xe; # Sub-region of prodsig
+        read               = "0 0 1 1 a0 0 0 0  0 0 0 0 0 0 0 0  0 0 0 0 a4 a3 a2 a1  o o o o o o o o";
+    ;
 ;
 
 #------------------------------------------------------------
@@ -3859,6 +3874,10 @@ part parent ".classic" # t11
         write              = NULL;
     ;
 
+    memory "prodsig"
+        read               = NULL;
+    ;
+
     memory "signature"
         read               = NULL;
     ;
@@ -3867,6 +3886,10 @@ part parent ".classic" # t11
         read               = NULL;
     ;
 
+    memory "sernum"
+        read               = NULL;
+    ;
+
     memory "io"
         size               = 64;
         offset             = 0x0;
@@ -6000,6 +6023,10 @@ part parent ".classic" # t28
         write              = NULL;
     ;
 
+    memory "prodsig"
+        read               = NULL;
+    ;
+
     memory "signature"
         read               = NULL;
     ;
@@ -6008,6 +6035,10 @@ part parent ".classic" # t28
         read               = NULL;
     ;
 
+    memory "sernum"
+        read               = NULL;
+    ;
+
     memory "io"
         size               = 64;
     ;
@@ -10457,21 +10488,6 @@ part parent "m324p" # m324pb
         bitmask            = 0x0f;
         write              = "1010.1100--1010.0100--xxxx.xxxx--1111.iiii";
     ;
-
-    memory "prodsig"
-        size               = 24;
-        read               = "0 0 1 1 a0 0 0 0  0 0 0 0 0 0 0 0  0 0 0 0 a4 a3 a2 a1  o o o o o o o o";
-    ;
-
-    memory "sigrow"
-        alias "prodsig";
-    ;
-
-    memory "sernum"
-        size               = 10;
-        offset             = 0xe; # Sub-region of prodsig
-        read               = "0 0 1 1 a0 0 0 0  0 0 0 0 0 0 0 0  0 0 0 0 a4 a3 a2 a1  o o o o o o o o";
-    ;
 ;
 
 #------------------------------------------------------------
@@ -12581,21 +12597,6 @@ part parent "m328" # m328pb
         bitmask            = 0x0f;
         write              = "1010.1100--1010.0100--xxxx.xxxx--xxxx.iiii";
     ;
-
-    memory "prodsig"
-        size               = 24;
-        read               = "0 0 1 1 a0 0 0 0  0 0 0 0 0 0 0 0  0 0 0 0 a4 a3 a2 a1  o o o o o o o o";
-    ;
-
-    memory "sigrow"
-        alias "prodsig";
-    ;
-
-    memory "sernum"
-        size               = 10;
-        offset             = 0xe; # Sub-region of prodsig
-        read               = "0 0 1 1 a0 0 0 0  0 0 0 0 0 0 0 0  0 0 0 0 a4 a3 a2 a1  o o o o o o o o";
-    ;
 ;
 
 #------------------------------------------------------------
@@ -14576,13 +14577,21 @@ part parent ".classic" # m406
         bitmask            = 0x3f;
     ;
 
+    memory "prodsig"
+        read               = NULL;
+    ;
+
     memory "signature"
         read               = NULL;
     ;
 
     memory "calibration"
         read               = NULL;
     ;
+
+    memory "sernum"
+        read               = NULL;
+    ;
 ;
 
 #------------------------------------------------------------

diff --git a/src/doc/avrdude.texi b/src/doc/avrdude.texi
@@ -892,9 +892,14 @@ Low fuse byte
 @item prodsig
 Signature, calibration byte and serial number in a small read-only memory,
 which is only documented to be available for ATmega324PB, ATmega328PB,
-ATtiny102 and ATtiny104; programmers may or may not be able to read this memory
+ATtiny102 and ATtiny104; AVRDUDE generally tries to make this memory
+available, also for parts where it is not documented, but not all
+programmers may be able to read this memory
 @item sigrow
 Memory alias for prodsig
+@item sernum
+The serial number part of prodsig; owing to scarce documentation this may not
+actually turn out to be a serial number or be readable by some programmers
 @item usersig
 Three extra flash pages for firmware settings; this memory is not erased
 during a chip erase. Only some classic parts,