Changes between Version 16 and Version 17 of TBR/BSP/Beagleboard

Timestamp:

04/16/14 08:23:04 (10 years ago)

Author:

ChrisJohns

Comment:

/* Debugging */

TBR/BSP/Beagleboard

@@ -186 +186 @@
 
 Using the xM and JTAG I cannot get Ben's build to work. The problem is no UART set up because it is not set up by the time JTAG is given control. From reading the TRM and by playing around it seems some code is being loaded off the SD card and that is setting up DRAM plus other things however the UART is not setup. If the SD card is removed the code sits in the ROM code. As a result we need a boot monitor of some form to get things working until supporting initialisation code is added to RTEMS we decide to settle on U-Boot as the initialisation code.
+= JTAG =
+
+
+I use a Flyswatter2 from Rusty at Tincan Tools (http://www.tincantools.com/JTAG/Flyswatter2.html). You can also buy an adaptor board for the xM that makes connecting simple. The software is OpenOCD (http://openocd.sourceforge.net/). I build from git with a range of unrelated patches for SMP support on the Zynq. The git repo is http://sourceforge.net/p/openocd/code/ci/master/tree/. I use a special prefix by configuring with the --prefix option to configure.
+
+To run OpenOCD:
+
+  $ cat bbxm.cfg
+  source [find interface/ftdi/flyswatter2.cfg]
+  source [find board/ti_beagleboard_xm.cfg]  
+  init
+  $ ~/development/openocd/git/bin/openocd -f bbxm.cfg -c "reset"
+  Open On-Chip Debugger 0.8.0-dev-00014-gd3d0bf2-dirty (2013-07-21-15:32)
+  Licensed under GNU GPL v2
+  For bug reports, read
+          http://openocd.sourceforge.net/doc/doxygen/bugs.html
+  Info : only one transport option; autoselect 'jtag'
+  adapter speed: 10 kHz
+  Warn : dm37x.dsp: huge IR length 38
+  trst_only separate trst_push_pull
+  Info : clock speed 10 kHz
+  Info : TAP dm37x.jrc does not have IDCODE
+  Warn : JTAG tap: dm37x.jrc       UNEXPECTED: 0x00000000 (mfg: 0x000, part: 0x0000, ver: 0x0)
+  Error: JTAG tap: dm37x.jrc  expected 1 of 3: 0x2b89102f (mfg: 0x017, part: 0xb891, ver: 0x2)
+  Error: JTAG tap: dm37x.jrc  expected 2 of 3: 0x1b89102f (mfg: 0x017, part: 0xb891, ver: 0x1)
+  Error: JTAG tap: dm37x.jrc  expected 3 of 3: 0x0b89102f (mfg: 0x017, part: 0xb891, ver: 0x0)
+  Error: Trying to use configured scan chain anyway...
+  Warn : Bypassing JTAG setup events due to errors
+  adapter speed: 1000 kHz
+  Warn : dm37x.cpu: ran after reset and before halt ...
+  dm37x.cpu: target state: halted
+  dm37x.cpu: target halted in Thumb state due to debug-request, current mode: Supervisor
+  dm37x.cpu: cpsr: 0x000001f3 pc: 0x00015dec
+  dm37x.cpu: MMU: disabled, D-Cache: disabled, I-Cache: enabled
 = Building U-Boot =