Hello, This patchset adds support for the Trusted Foundations firmware on NVIDIA Tegra30. Pretty much all of Tegra30 consumer devices have that firmware and upstream kernel can't boot on those devices without the firmware support. This series was tested on Nexus 7, TF300T and Ouya Tegra30 devices.
Changelog: v7: - Fixed kernel booting with CONFIG_TRUSTED_FOUNDATIONS=n by providing a dummy L2C write_sec implementation in the "Support L2 cache maintenance" patch. - Minor clean up: no static variables anymore, replaced white spaces with a tab in one place, etc. - Added Michał's and Robert's Tested-by/Signed-off-by to the patches. v6: - One patch got messed up accidentally in v5, this is fixed now. - Squashed "Support L2 cache maintenance done via firmware" patch into the "Add firmware calls..." patch. - The l2x0_init() firmware callback is now invoked unconditionally because it is always a NO-OP on T114+ and is a NO-OP on T20/30 if firmware node is missed in device-tree, hence there is no need to check the machine's DT compatible as it was done in the previous versions of the series. v5: - Fixed machine hanging on disabling D-cache during suspend, turned out there are slight variations in behaviour between firmware version in regards to cache-management. Thanks to Robert Yang for reporting the problem and helping with the solution. v4: - Fixed Thumb2-kernel hanging on Tegra20, turned out it was not a good idea to switch CPU into Thumb2 mode right after jumping into the reset handler. - Moved LP2-mode-set firmware call invocation to a later stage to better replicate what downstream kernel does. This change was suggested by Robert Yang and fixes system hang on Ouya game console. - Added references to the original work made by Michał Mirosław into commit messages of the relevant patches. v3: - Implemented suspend-resume support. - Reworked arm/firmware/trusted_foundations.c a tad. Now cache is getting properly initialized, cache enabling / disabling is supported. 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 (7): ARM: trusted_foundations: Support L2 cache maintenance ARM: trusted_foundations: Make prepare_idle call to take mode argument ARM: trusted_foundations: Provide information about whether firmware is registered ARM: tegra: Set up L2 cache using Trusted Foundations firmware ARM: tegra: Don't apply CPU erratas in insecure mode ARM: tegra: Always boot CPU in ARM-mode ARM: tegra: Add firmware calls required for suspend-resume on Tegra30 arch/arm/firmware/trusted_foundations.c | 75 +++++++++++++++++++++- arch/arm/include/asm/firmware.h | 2 +- arch/arm/include/asm/trusted_foundations.h | 25 ++++++++ arch/arm/mach-tegra/cpuidle-tegra114.c | 3 +- arch/arm/mach-tegra/pm.c | 49 ++++++++++++++ arch/arm/mach-tegra/reset-handler.S | 50 +++++++++++---- arch/arm/mach-tegra/reset.c | 3 + arch/arm/mach-tegra/reset.h | 9 ++- arch/arm/mach-tegra/sleep-tegra20.S | 4 ++ arch/arm/mach-tegra/sleep.S | 14 ++-- arch/arm/mach-tegra/tegra.c | 2 + 11 files changed, 214 insertions(+), 22 deletions(-) -- 2.20.1