[PATCH v4 0/3] Add Amlogic secure monitor driver
Carlo Caione
carlo at caione.org
Wed May 25 13:18:28 PDT 2016
From: Carlo Caione <carlo at endlessm.com>
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.
Changelog:
v4:
* Changed patches order
* Removed now useless PATCH 2/4
* Changed compatible to be SoC-specific
* In the DT now we use SoC-agnostic IDs for the SMC functions. These IDs are
traslated into SoC specific function IDs inside the driver
* Added error checking on meson_sm_call() to retrieve the base address
* Improved printing on errors
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 (3):
firmware: Amlogic: Add secure monitor driver
documentation: Add secure monitor binding documentation
ARM64: dts: amlogic: gxbb: Enable secure monitor
.../bindings/firmware/meson/meson_sm.txt | 42 +++++
arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 9 +
drivers/firmware/Kconfig | 1 +
drivers/firmware/Makefile | 1 +
drivers/firmware/meson/Kconfig | 8 +
drivers/firmware/meson/Makefile | 1 +
drivers/firmware/meson/meson_sm.c | 193 +++++++++++++++++++++
include/dt-bindings/firmware/meson-sm.h | 20 +++
include/linux/firmware/meson/meson-sm.h | 49 ++++++
9 files changed, 324 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-sm.h
create mode 100644 include/linux/firmware/meson/meson-sm.h
--
2.7.4
More information about the linux-amlogic
mailing list