[U-Boot] [PATCH 0/4] ARM: tegra: GPU WPR region support

[Alexandre Courbot]

Ping Tom, how does this look to you?

On Mon, Oct 19, 2015 at 1:57 PM, Alexandre Courbot <acourbot at nvidia.com> wrote:
> This series makes U-boot program the write-protected (WPR) region of T210 chips,
> allowing the kernel to perform GPU secure firmware loading.
>
> Tegra 210's GPU requires its firmware to be loaded though a write-protected
> region. An area of physical memory is carved-out, programmed into the
> corresponding memory controller registers, and locked such as only the GPU can
> write into it. This area needs to be set up by the bootloader since it cannot
> be re-claimed for normal use after being locked.
>
> The first 3 patches of this series are cleanup patches. Patch 2 implements a
> suggestion made by Stephen, patch 3 renames GPU-related functions to sound less
> generic.
>
> The last patch adds support for the GPU WPR region. The top 256KB of memory are
> removed from the available memory, and the corresponding MC registers are
> programmed to point to it, which allows the kernel to initiate secure firmware
> loading.
>
> Alexandre Courbot (4):
>   ARM: tegra: remove vpr_configured() function
>   ARM: tegra: simplify GPU setup
>   ARM: tegra: rename GPU functions
>   ARM: tegra210: gpu: configure WPR region
>
>  arch/arm/include/asm/arch-tegra/gpu.h   | 14 +++------
>  arch/arm/include/asm/arch-tegra210/mc.h | 12 ++++++++
>  arch/arm/mach-tegra/board.c             |  4 +++
>  arch/arm/mach-tegra/board2.c            | 22 +++++++++++++-
>  arch/arm/mach-tegra/gpu.c               | 52 +++++++++++++++++++++++++++++----
>  board/nvidia/jetson-tk1/jetson-tk1.c    |  8 -----
>  board/nvidia/p2571/p2571.c              |  7 -----
>  board/nvidia/venice2/venice2.c          |  8 -----
>  include/configs/jetson-tk1.h            |  2 --
>  include/configs/p2571.h                 |  2 --
>  include/configs/tegra-common.h          |  2 ++
>  include/configs/venice2.h               |  2 --
>  12 files changed, 89 insertions(+), 46 deletions(-)
>
> --
> 2.6.1
>