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8d9a0e6a05
Added docs about sm efusedump command, that reads bytes from efuse memory bank and print them to the console. 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/20230110105650.54580-6-avromanov@sberdevices.ru Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
49 lines
1.2 KiB
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49 lines
1.2 KiB
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.. SPDX-License-Identifier: GPL-2.0+:
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sm command
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==========
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Synopis
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-------
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::
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sm serial <address>
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sm reboot_reason [name]
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sm efuseread <offset> <size> <address>
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sm efusewrite <offset> <size> <address>
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sm efusedump <offset> <size>
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Description
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-----------
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The sm command is used to request services from the secure monitor. User
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can call secure monitor to request special TEE function, for example chip
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serial number info, reboot reason, etc.
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sm serial
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Retrieve chip unique serial number from sm and write it to memory on
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appropriate address.
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sm reboot_reason
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Print reboot reason to the console, if parameter [name] isn't specified.
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If parameter specified, set reboot reason string to environment variable
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with this name.
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sm efuseread
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Read <size> bytes starting from <offset> from efuse memory bank and write
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result to the address <address>.
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sm efusewrite
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Write into efuse memory bank, starting from <offset>, the <size> bytes
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of data, located at address <address>.
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sm efusedump
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Read <size> bytes starting from <offset> from efuse memory bank and print
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them to the console.
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Configuration
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-------------
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To use the sm command you must specify CONFIG_CMD_MESON=y
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