| From: |
| Carlo Caione <carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org> |
| To: |
| linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-amlogic-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-6IF/jdPJHihWk0Htik3J/w@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, khilman-rdvid1DuHRBWk0Htik3J/w@public.gmane.org, afaerber-l3A5Bk7waGM@public.gmane.org, arnd-r2nGTMty4D4@public.gmane.org, jens.wiklander-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org |
| Subject: |
| [PATCH v3 0/4] Add Amlogic secure monitor driver |
| Date: |
| Mon, 23 May 2016 18:30:20 +0200 |
| Message-ID: |
| <1464021024-29380-1-git-send-email-carlo@caione.org> |
| Cc: |
| Carlo Caione <carlo-6IF/jdPJHihWk0Htik3J/w@public.gmane.org> |
| Archive‑link: | |
Article |
From: Carlo Caione <carlo-6IF/jdPJHihWk0Htik3J/w@public.gmane.org>
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:
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
--
2.7.4
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