- Instantiate generic PMP module
- Wire up I-side and D-side PMP faults
- The output of the PMP check is used to gate external bus requests from the
I-side and LSU
- Each of those units progresses with their request as-if it was granted
externally and registers the PMP error
- The error is then sent to the controller at the appropriate time to trigger
an exception
We currently have a documentation block at the beginning of each file,
containing author credits and module-level documentation. The
module-level documentation is retained for historic reasons and
duplicated with the newer comments below it.
For the authors, maintaining author credits in the file is error-prone,
as this information gets outdated very soon. A more reliable way to see
who modified a file is to use the history information in git.
Additionally, we now have the CREDITS.md file, which lists all
contributors, even the ones which don't appear in the git history (e.g.
because the code was copied and commited by someone else).
- Add required signals to top-level
- Propagate error through fetch stages
- Add new exception type
- Update documentation for new exception type
- Resolves issue #109
This commit adds 15 local fast interrupt lines managed through
the `mie` and `mip` CSRs directly, and removes the old legacy
interrupts including the internal controller.
This commit adds the `mip` and `mie` CSRs as well as the software,
timer and external interrupts.
Currently these interrupts are overlapped with some of the legacy
interrupts, i.e., the core will jump to the same address for different
interrupts. For example, the software interrupt has the same ID as
legacy interrupt #3. Thus, the handler must read the `mip` register
to find out whether the interrupt routine has been entered because of
the software interrupt or the legacy interrupt.
Eventually, the number of legacy interrupts will be reduced to avoid
this overlapping, and they will be connected to the `mie` and `mip`
CSRs directly.
This file doesn't contain defines any more, but a normal SV package.
The diff is best viewed without whitespace changes, as the reindents
cause a lof of diff noise.
Fixeslowrisc/ibex#173
