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Add Amlogic secure monitor driver

Matthias Brugger linux-amlogic linux-arm-kernel linux-devicetree 3 versions New

Get series with b4
b4 am [email protected]

Versions newest first · linked by author and title

  1. v3 Latest0 of 4 patches 0 repliesNew
  2. v21 of 4 patches 0 repliesSuperseded
  3. v1 RFC1 patch 0 repliesSuperseded

Patches in v3 No applies recorded yet

None of the 4 patches the cover letter announces are in this archive.

Reviews trailers per patch

PatchMatthias Brugger
SeriesR-b

Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.

Read the v3 thread

Cover letter [PATCH v3 0/4] Add Amlogic secure monitor driver
Quoted 9 lines · Carlo Caione

From: Carlo Caione <[email protected]>

In the Amlogic SoCs the secure monitor calls are used for a lot of reasons:
interact with the NVMEM (efuses), check the reboot reason, set USB boot, ...

This driver defines a generic interface towards the secure monitor that can be used by more specialized drivers to interact with the secure monitor itself without worrying about bounce buffers managing.

For the whole series:

Reviewed-by Matthias Brugger <[email protected]>
Quoted 44 lines

Changelog:

v3:
* Moved driver to drivers/firmware
* Added EXPORT_SYMBOL macros
* Changed '_' in '-'
* Introduced 'struct meson_sm_firmware' and 'meson_sm_get_fw()' to be used by drivers using the secure-monitor to enforce probe ordering

v2:
* All the SMC function identifiers are now in a SoC-specific header file to be included by the DTS files so the SMC commands are now defined in the DT instead to be hardcoded into the driver
* Patchset is no longer an RFC
* Better error management and boundary checking
* s/unsigned int/u32/
* SMC call not only on CPU 0
* Fix memory leaking
* s/amlogic/meson/ in the directory names

Carlo Caione (4):
firmware: Amlogic: Add secure monitor driver
firmware: dt-bindings: Add secure monitor header file for GXBB
ARM64: dts: amlogic: gxbb: Enable secure monitor
documentation: Add secure monitor binding documentation

  .../bindings/firmware/meson/meson_sm.txt           |  51 ++++++
  arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi        |  11 ++
  drivers/firmware/Kconfig                           |   1 +
  drivers/firmware/Makefile                          |   1 +
  drivers/firmware/meson/Kconfig                     |   8 +
  drivers/firmware/meson/Makefile                    |   1 +
  drivers/firmware/meson/meson_sm.c                  | 179 +++++++++++++++++++++
  include/dt-bindings/firmware/meson-gxbb-sm.h       |  44 +++++
  include/linux/firmware/meson/meson_sm.h            |  38 +++++
  9 files changed, 334 insertions(+)

create mode 100644 Documentation/devicetree/bindings/firmware/meson/meson_sm.txt create mode 100644 drivers/firmware/meson/Kconfig
create mode 100644 drivers/firmware/meson/Makefile
create mode 100644 drivers/firmware/meson/meson_sm.c
create mode 100644 include/dt-bindings/firmware/meson-gxbb-sm.h create mode 100644 include/linux/firmware/meson/meson_sm.h

Read the cover letter in its thread