From a28eaa85f73759bb189a46308642502c9fa5aa4b Mon Sep 17 00:00:00 2001
From: duane <duane@b42882b7-edfa-0310-969c-e2dbd0fdcd60>
Date: Sun, 30 Nov 2008 22:25:43 +0000
Subject: jtag newtap change & huge manual update

git-svn-id: svn://svn.berlios.de/openocd/trunk@1194 b42882b7-edfa-0310-969c-e2dbd0fdcd60
---
 NEWTAPS | 137 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 137 insertions(+)
 create mode 100755 NEWTAPS

(limited to 'NEWTAPS')

diff --git a/NEWTAPS b/NEWTAPS
new file mode 100755
index 00000000..c9230820
--- /dev/null
+++ b/NEWTAPS
@@ -0,0 +1,137 @@
+Reporting Unknown JTAG TAP IDS
+------------------------------
+
+If OpenOCD reports an UNKNOWN or Unexpected Tap ID please report it to
+the development mailing list - However - keep reading.
+
+openocd-development@lists.berlios.de.
+
+========================================
+
+About "UNEXPECTED" tap ids.
+
+  Before reporting an "UNEXPECTED TAP ID" - take a closer look.
+  Perhaps you have your OpenOCD configured the wrong way, maybe you
+  have the tap configured the wrong way? Or something else is wrong.
+  (Remember: OpenOCD does not stop if the tap is not present)
+
+  This "tap id check" is there for a purpose.
+  The goal is to help get the *right* configuration.
+
+The idea is this:
+
+  Every JTAG tap is suppose to have "a unique 32bit tap id" number.
+  They are suppose to be "sort of unique" but they are not.  There are
+  no guarantees.
+
+Version Number Changes:
+
+  Sometimes, the tap ID only differs by VERSION number. If so - it's
+  not a big deal.  Please do report this information.  We'd like to
+  know about it.
+
+  For example 
+
+Error:  ERROR: Tap: s3c4510.cpu - Expected id: 0x3f0f0f0f, Got: 0x1f0f0f0f
+Error:  ERROR: expected: mfg: 0x787, part: 0xf0f0, ver: 0x3
+Error:  ERROR:      got: mfg: 0x787, part: 0xf0f0, ver: 0x1
+
+========================================
+
+Updating the Tap ID number your self
+ 
+  Why do this? You just want the warning to go away.  And don't want
+  to update your version/instance of OpenOCD.
+
+  On simple systems, to fix this problem, in your "openocd.cfg" file,
+  override the tap id.  Depending on the tap, add one of these 3
+  commands:
+
+	set CPUTAPID   newvalue
+  or	set BSTAPID    newvalue
+  or	set FLASHTAPID newvalue
+  or	set ETMTAPID   newvalue
+
+  Where "newvalue" is the new value you are seeing.
+
+  On complex systems, (with many taps and chips) you probably have a
+  custom configuration file. Its is more complicated, you're going to
+  have to read through the configuration files
+
+========================================
+
+What to send:
+
+Cut & paste the output of OpenOCD that pointed you at this file.
+
+Please include the VERSION number of OpenOCD you are using.
+
+And please include the information below.
+
+========================================
+
+A) The JTAG TAP ID code.
+
+This is always a 32bit hex number.
+
+Examples:
+    0x1f0f0f0f - is an old ARM7TDMI
+    0x3f0f0f0f - is a newer ARM7TDMI
+    0x3ba00477 - is an ARM cortex M3
+
+Some chips have multiple JTAG taps - be sure to list 
+each one individually - ORDER is important!
+
+========================================
+B) The maker of the part 
+
+Examples:
+    Xilinx, Atmel, ST Micro Systems, Freescale
+
+========================================
+C) The family of parts it belongs to
+
+Examples:
+   "NXP LPC Series"
+   "Atmel SAM7 Series"
+   
+========================================
+
+D) The actual part number on the package
+
+   For example: "S3C45101x01"
+
+========================================
+
+E) What type of board it is.
+
+ie: a "commercial off the self eval board" that one can purchase (as
+opposed to your private internal custom board)
+
+For example: ST Micro systems has Eval boards, so does Analog Devices
+
+Or - if it is inside something "hackers like to hack" that information
+is helpful too.
+
+For example: A consumer GPS unit or a cellphone
+
+========================================
+
+(F)   The maker of the board
+        ie: Olimex, LogicPD, Freescale(eval board)
+
+========================================
+	 
+(G)   Identifying information on the board.
+
+      Not good:   "iar red ST eval board"
+
+      Really good: "IAR STR912-SK evaluation board"
+
+========================================
+
+(H) Are there other interesting (JTAG) chips on the board?
+
+    ie: An FPGA or CPLD ...
+
+========================================
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