This commit introduces a way to control core 1.  This is archieved by a
predefined API-Interrupt:  The reset interrupt.  When triggered, it will
bring the core back into its default state and wait for a new vector
address from Epicardium.  Once this vector address is transferred, it
will start the new payload.

This method only works as long as core 1 is responsive to the API
interrupts.  Cases where this might not be the case:

  - During times where core 1 has interrupts disabled
  - When in a higher priority exception handler
  - When core 1 has corrupted its IVT

Signed-off-by: Rahix <rahix@rahix.de>

Closes #67

Signed-off-by: Rahix <rahix@rahix.de>

This commit adds a script to embed the git-version of the firmware into
the bootloader, epicardium, and pycardium.  All three binaries will
display their version on startup.

Signed-off-by: Rahix <rahix@rahix.de>

swym authored 5 years ago and rahix committed 5 years ago

- Implement de-initialization
- Wrap filesystem operations in semaphore
- Introduce EpicFileSystem object and move epic_file_FOO(...)
  imlementations into efs_FOO(EpicFileSystem*, ...) functions.
- epic_file_FOO(...) functions are now wrappers around the _fs_
  functions, but lock and unlock the global filesystem object before &
  after calls.  This way, all efs_ functions can assume that the
  necessary lock has been acquired.
- libff: don't use FF_FS_REENTRANT, our own FS lock is enough

Signed-off-by: Rahix <rahix@rahix.de>

Signed-off-by: Rahix <rahix@rahix.de>

glue functions for handling the locking are implement as weak symbols in
libff13 itself and overriden to use FreeRTOS's semaphores in epicardium

Signed-off-by: Rahix <rahix@rahix.de>

Signed-off-by: Rahix <rahix@rahix.de>

Signed-off-by: Rahix <rahix@rahix.de>

Gerd authored 5 years ago and rahix committed 5 years ago

Closes !13

Signed-off-by: Rahix <rahix@rahix.de>

Signed-off-by: Rahix <rahix@rahix.de>

This reverts commit 719ff6ea.

Signed-off-by: Rahix <rahix@rahix.de>

Signed-off-by: Rahix <rahix@rahix.de>

Signed-off-by: Rahix <rahix@rahix.de>

Signed-off-by: Rahix <rahix@rahix.de>

Signed-off-by: Rahix <rahix@rahix.de>

Signed-off-by: Rahix <rahix@rahix.de>

Signed-off-by: Rahix <rahix@rahix.de>