This commit adds functions to manage secure power domain for
Amlogic SoC's using smc functionality.
Signed-off-by: Alexey Romanov <avromanov@sberdevices.ru>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230531093156.29240-2-avromanov@sberdevices.ru
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
This function can be used by other modules. Also add comments.
Signed-off-by: Alexey Romanov <avromanov@sberdevices.ru>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Link: https://lore.kernel.org/r/20230110105650.54580-2-avromanov@sberdevices.ru
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
The Secure Monitor offers multiple services, like returning the
SoC unique serial number, and can provide the "reboot reason" as
set by the previous booted system.
This extends the Amlogic specific "sm" cmd with a "reboot_reason" subcommand
to print or set a specified environment variable with the reboot reason in
human readable format.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Add support for generating an unique MAC address using the SoC internal
serial number from the Secure Monitor interface.
The algorithm generates an unicast locally administered 6bytes minus 2bits
address using an crc16 of the serial for the top 16bits with the lower 2 bits
masked to setup the unicast locally administered property and a crc24 for
the lower 24bits.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
The Secure Monitor interface permits retrieving the SoC Serial Number,
add a function to retrieve it.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.
In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.
This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.
Signed-off-by: Tom Rini <trini@konsulko.com>
