Commit Graph

3 Commits

Author SHA1 Message Date
Neil Armstrong 0789724f86 firmware: meson_sm: Add serial number sysfs entry
The Amlogic Meson SoC Secure Monitor implements a call to retrieve an unique
SoC ID starting from the GX Family and all new families.

The serial number is simply exposed as a sysfs entry under the firmware
sysfs directory.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2018-09-12 20:54:07 -07:00
Carlo Caione 83e007a0c6 firmware: meson-sm: Check for buffer output size
After the data is read by the secure monitor driver it is being copied
in the output buffer checking only the size of the bounce buffer but not
the size of the output buffer.

Fix this in the secure monitor driver slightly changing the API. Fix
also the efuse driver that it is the only driver using this API to not
break bisectability.

Signed-off-by: Carlo Caione <carlo@endlessm.com>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> # for nvmem
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2017-03-23 12:22:32 -07:00
Carlo Caione 2c4ddb2155 firmware: Amlogic: Add secure monitor driver
Introduce a driver to provide calls into secure monitor mode.

In the Amlogic SoCs these calls are used for multiple reasons: access to
NVMEM, set USB boot, enable JTAG, etc...

Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Carlo Caione <carlo@endlessm.com>
[khilman: add in SZ_4K cleanup]
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2016-09-01 14:23:39 -07:00