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(-) -- 2.17.1
