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feat(tcr2): support FEAT_TCR2

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Arm v8.9 introduces FEAT_TCR2, adding extended translation control
registers. Support this, context switching TCR2_EL2 and disabling
traps so lower ELs can access the new registers.

Change the FVP platform to default to handling this as a dynamic option so
the right decision can be made by the code at runtime.

Signed-off-by: Mark Brown <broonie@kernel.org>
Change-Id: I297452acd8646d58bac64fc15e05b06a543e5148
This commit is contained in:
Mark Brown 2023-03-14 20:13:03 +00:00
parent 4c985e8674
commit d333160366
10 changed files with 69 additions and 0 deletions
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3
include/lib/el3_runtime/aarch64/context.h
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@ -229,6 +229,9 @@
// Register for FEAT_HCX
#define CTX_HCRX_EL2 U(0x1d0)
// Starting with Armv8.9
#define CTX_TCR2_EL2 U(0x1d8)
/* Align to the next 16 byte boundary */
#define CTX_EL2_SYSREGS_END U(0x1e0)