[PATCH v2 0/5] Initial support of Trusted Foundations on Tegra30

Dmitry Osipenko
2018-06-19T11:02:59Z

Hello,

This series of patches brings initial support of Trusted Foundations to
Tegra30, that is to the consumer-grade Tegra30 devices which do not allow
to easily replace the proprietary bootloader. Support is initial because
this series implements only a proper CPU boot-up (main + secondary cores)
and a basic L2 cache maintenance that is done using the TF firmware.
Suspend-resume support is missing yet as I couldn't get it to work
(CPU hangs on resume from suspend after awhile and seems that is related
to inappropriately done cache maintenance during of suspend-resume using
the firmware), it is work-in-progress for now.

This patchset is partially based on the work done by Michał Mirosław [0].

[0] https://www.spinics.net/lists/linux-tegra/msg30368.html

Changelog:

v2:
- The "Don't apply CPU erratas in insecure mode" patch got some
cleanup, in particular resolved the messiness in
__tegra_cpu_reset_handler_data.

- Added a comment to tf_cache_write_sec(), justifying the warning
message.

Dmitry Osipenko (5):
ARM: trusted_foundations: Implement L2 cache initialization callback
ARM: trusted_foundations: Provide information about whether firmware
is registered
ARM: tegra: Setup L2 cache using Trusted Foundations firmware
ARM: tegra: Don't apply CPU erratas in insecure mode
ARM: tegra: Always boot CPU in ARM-mode

arch/arm/firmware/trusted_foundations.c | 32 ++++++++++++++++++++++
arch/arm/include/asm/trusted_foundations.h | 7 +++++
arch/arm/mach-tegra/reset-handler.S | 25 +++++++++--------
arch/arm/mach-tegra/reset.c | 5 +++-
arch/arm/mach-tegra/reset.h | 9 ++++--
arch/arm/mach-tegra/sleep-tegra20.S | 4 +++
arch/arm/mach-tegra/tegra.c | 15 ++++++++++
7 files changed, 82 insertions(+), 15 deletions(-)

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2.17.1