Commits on Jan 22, 2019

1. PSOC6.py: remove silicon ID check …

   PSoC 6 hex files contain 4-byte chip ID at virtual offset 0x90500002
   added by PSoC Creator or cymcuelftool from .cymeta ELF section.
   merge_images compares chip ID in CM0+ and CM4 hex files and raises
   an exception in case of mismatch. Chip ID is different for each MPN
   (for example, 0xE2072100 for CY8C6347BZI-BLD53 and 0xE2062100 for
   CY8C6247BZI-D54). CM0+ prebuilt images target CY8C6347BZI-BLD53
   but should be compatible with other PSoC6 MPNs.
   Remove the check to enable merging CM0+ images with CM4 applications
   built for different MPNs, with empty or absent cymetadata.

   

   vmedcy committed Jan 22, 2019
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2. PSOC6.py: do not require metadata during HEX merging …

   Replace hard-coded numeric offsets of PSoC 6 hex file sections
   with sensible constants.
   Do not attempt to update the checksum and metadata contents
   if the sections are not found in the original HEX file.

   

   vmedcy committed Jan 22, 2019
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3. PSOC6: refactor M0 image merging, enable export to makefile …

   Rename the existing PSoC-specific m0_core_img key in targets.json
   as a more generic hex_filename key. Update makefile exporter to select
   the subset of resources.hex_files matching the hex_filename value.
   Without this fix, multiple prebuilt CM0+ hex files are found in the
   target resources and erroneously passed to the srec_cat tool.
   
   The fix is generic so other targets that need post-build hex merging
   can use this key to pass the correct image to srecord tool.
   
   The fix also removes sub_target key: instead, rely hex_filename json
   key to detect if the hex image merging needs to be done.
   The sub_target is not used in mbed-os codebase for anything else.
   
   It is possible to override the hex file name in mbed_app.json:
   {
     "target_overrides": {
       "*": {
         "target.hex_filename": "my_custom_m0_image.hex"
       }
   }

   

   vmedcy committed Jan 22, 2019
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