diff options
author | zwelch <zwelch@b42882b7-edfa-0310-969c-e2dbd0fdcd60> | 2009-05-27 06:49:24 +0000 |
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committer | zwelch <zwelch@b42882b7-edfa-0310-969c-e2dbd0fdcd60> | 2009-05-27 06:49:24 +0000 |
commit | dbbc9c41f7db210b0a4e226540a28e0a8a5019bf (patch) | |
tree | ce358672ddde8b15a02db12c718eb53689c490f6 /tcl/target/readme.txt | |
parent | 140d6c8e7948710a764965075bfaa700efd09802 (diff) |
Move TCL script files -- Step 2 of 2:
- Move src/tcl to tcl/.
- Update top Makefile.am to use new path name.
git-svn-id: svn://svn.berlios.de/openocd/trunk@1919 b42882b7-edfa-0310-969c-e2dbd0fdcd60
Diffstat (limited to 'tcl/target/readme.txt')
-rw-r--r-- | tcl/target/readme.txt | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/tcl/target/readme.txt b/tcl/target/readme.txt new file mode 100644 index 00000000..ca23c64b --- /dev/null +++ b/tcl/target/readme.txt @@ -0,0 +1,41 @@ +Prerequisites: +The users of OpenOCD as well as computer programs interacting with OpenOCD are expecting that certain commands +do the same thing across all the targets. + +Rules to follow when writing scripts: + +1. The configuration script should be defined such as , for example, the following sequences are working: + reset + flash info <bank> +and + reset + flash erase_address <start> <len> +and + reset init + load + +In most cases this can be accomplished by specifying the default startup mode as reset_init (target command +in the configuration file). + +2. If the target is correctly configured, flash must be writable without any other helper commands. It is +assumed that all write-protect mechanisms should be disabled. + +3. The configuration scripts should be defined such as the binary that was written to flash verifies +(turn off remapping, checksums, etc...) + +flash write_image [file] <parameters> +verify_image [file] <parameters> + +4. jtag_khz sets the maximum speed (or alternatively RCLK). If invoked +multiple times only the last setting is used. + +interface/xxx.cfg files are always executed *before* target/xxx.cfg +files, so any jtag_khz in interface/xxx.cfg will be overridden by +target/xxx.cfg. jtag_khz in interface/xxx.cfg would then, effectively, +set the default JTAG speed. + +Note that a target/xxx.cfg file can invoke another target/yyy.cfg file, +so one can create target subtype configurations where e.g. only +amount of DRAM, oscillator speeds differ and having a single +config file for the default/common settings. + |