forked from auracaster/openocd
d1cd97777b
Atmel introduced 6 new Cortex-M4 processors on 2011-10-26 SAM4S16C - 1024KB flash LQFP100/BGA100 SAM4S16B - 1024KB flash LQFP64/QFN64 SAM4S16A - 1024KB flash LQFP48/QFN48 SAM4S8C - 512KB flash LQFP100/BGA100 SAM4S8B - 512KB flash LQFP64/QFN64 SAM4S8A - 512KB flash LQFP48/QFN48 The SAM4S processors still suffer from the "6 waitstates needed to program device" errata. Other relevant changes are: 1. Address of flash memory starts at 0x400000. 2. EWP (Erase page and write page) only works for the first two 8KB "sectors" 3. Because of the EWP not working for all the sectors, normal page writes have to be used. The default_flash_blank_check is used to check if lockregions should be erased. 4. The EA (Erase All) command takes 7.3s to complete. (Previous timeout was 500 ms) 5. There are 128 lockable regions of 8KB each. Implemented default blank checking, and page erase for load_image scenarios. This is to compensate for the EWP flash commands only working on the first 2 8KB sectors. Change-Id: I7c5a52b177f7849a107611fd0f635fc416cfb724 Signed-off-by: Olivier Schonken <olivier.schonken@gmail.com> Reviewed-on: http://openocd.zylin.com/528 Tested-by: jenkins Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
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. adapter_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 adapter_khz in interface/xxx.cfg will be overridden by target/xxx.cfg. adapter_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.