arm-trusted-firmware/make_helpers
Mark Brown 062b6c6bf2 feat(pie/por): support permission indirection and overlay
Arm v8.9 introduces a series of features providing a new way to set memory
permissions. Instead of directly encoding the permissions in the page
tables the PTEs contain indexes into an array of permissions stored in
system registers, allowing greater flexibility and density of encoding.

Enable access to these features for EL2 and below, context switching the
newly added EL2 registers as appropriate. Since all of FEAT_S[12]P[IO]E
are separately discoverable we have separate build time options for
enabling them, but note that there is overlap in the registers that they
implement and the enable bit required for lower EL access.

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

Signed-off-by: Mark Brown <broonie@kernel.org>
Change-Id: Icf89e444e39e1af768739668b505661df18fb234
2023-04-12 15:03:22 +01:00
..
tbbr refactor(build): distinguish BL2 as TF-A entry point and BL2 running at EL3 2023-03-15 11:43:14 +00:00
arch_features.mk refactor(el3-runtime): add arch-features detection mechanism 2022-04-04 10:24:51 +01:00
armv7-a-cpus.mk build_macros.mk: include assert and define loop macros 2020-09-14 09:27:53 -05:00
build_env.mk Use SPDX license identifiers 2017-05-03 09:39:28 +01:00
build_macros.mk refactor(cpus): shorten errata flag defines 2023-03-16 11:04:47 +00:00
cygwin.mk Use SPDX license identifiers 2017-05-03 09:39:28 +01:00
defaults.mk feat(pie/por): support permission indirection and overlay 2023-04-12 15:03:22 +01:00
msys.mk Use SPDX license identifiers 2017-05-03 09:39:28 +01:00
plat_helpers.mk Change PLATFORM_ROOT to TF_PLATFORM_ROOT 2018-03-05 14:18:04 +08:00
unix.mk Makefile: Fix verbose builds on Windows 2018-10-19 15:54:27 +01:00
windows.mk build: fix syntax error in semantic ver generation 2022-08-23 16:51:13 +01:00