The previous delegating/undelegating sequence was incorrect as per the
specification DDI0615, "Architecture Reference Manual Supplement, The
Realm Management Extension (RME), for Armv9-A" Sections A1.1.1 and
A1.1.2
Off topic:
- cleaning the gpt_is_gpi_valid and gpt_check_pass_overlap
Change-Id: Idb64d0a2e6204f1708951137062847938ab5e0ac
Signed-off-by: Robert Wakim <robert.wakim@arm.com>
Under certain configurations of PPS and L0GPTSZ a macro could result in
a right shift by 64 bits. This patch removes that possibility by
limiting the total size of each shift to the maximum width of the L0 or
L1 index field in a physical address. In addition, it adds more detail
about how these values are calculated.
Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: Ie71c8e6f922a5bb522a6169701bfc36fc99f765a
sha 4ce3e99a3 introduced printf format specifiers for fixed width
types, which uses PRI*64 instead of "ll" for 64 bit values.
Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
Change-Id: I30472411467061d58cc6ee22407ed3bad2552751
This patch adds necessary barriers after GPT entries are modified
so that the writes are observed correctly by the GPC hardware.
The shareability of GPC fetches are changed from OSH to ISH so
that they align with the shareability of MMU attributes for the
region. Thus by adding a dsbishst() between the GPT L1 entry
write as part of granule migration at runtime, we can now remove
the clean cache maintenance operation (CMO) for that region.
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
Signed-off-by: Robert Wakim <robert.wakim@arm.com>
Change-Id: Ib9e405b106f0db95c7fbdb26773c0ed41663a5b4
This patch updates and refactors the GPT library and fixes bugs.
- Support all combinations of PGS, PPS, and L0GPTSZ parameters.
- PPS and PGS are set at runtime, L0GPTSZ is read from GPCCR_EL3.
- Use compiler definitions to simplify code.
- Renaming functions to better suit intended uses.
- MMU enabled before GPT APIs called.
- Add comments to make function usage more clear in GPT library.
- Added _rme suffix to file names to differentiate better from the
GPT file system code.
- Renamed gpt_defs.h to gpt_rme_private.h to better separate private
and public code.
- Renamed gpt_core.c to gpt_rme.c to better conform to TF-A precedent.
Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: I4cbb23b0f81e697baa9fb23ba458aa3f7d1ed919
Robert Wakim
johpow01
Manish Pandey
Soby Mathew