[hw] CVA6 updated with HPDCache#520
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This moves the Mocha specific changes to the top instead of a commit in the vendored in repository.
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This commit also switches CVA6's core file to use the HPDCache configuration and to depend on the HPDCache. It also adds the License information for the HPDCache in REUSE.toml
Update code from upstream repository https://github.com/Capabilities- Limited/cv-hpdcache.git to revision 07f4ebe7bd074e2f82f6b10c2386026bc12455d8 Signed-off-by: Marno van der Maas <mvdmaas+git@lowrisc.org>
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This is a big code change because there has been a rebase on upstream non-CHERI CVA6 as well as work to enable HPDCache. This vendor is based on the following release: https://github.com/Capabilities-Limited/cheri-cva6/releases/tag/cva6-april-2026
PCC specific types have been removed in favour of register types, make the appropriate change when definding the boot capability.
Using $clog2 to determine the width of a signal that has size 1 will erroneously give zero. This changes that.
Ibex is not integrated in Mocha, so this can be removed.
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This is the first major update of CVA6 since our initial integration. The core has seen quite a few fixes and most importantly the HPDCache is now integrated for use.
Closes: #245