| .. SPDX-License-Identifier: GPL-2.0+: |
| |
| .. index:: |
| single: sm (command) |
| |
| sm command |
| ========== |
| |
| Synopsis |
| -------- |
| |
| :: |
| |
| sm serial <address> |
| sm reboot_reason [name] |
| sm efuseread <offset> <size> <address> |
| sm efusewrite <offset> <size> <address> |
| sm efusedump <offset> <size> |
| |
| Description |
| ----------- |
| |
| The sm command is used to request services from the secure monitor. User |
| can call secure monitor to request special TEE function, for example chip |
| serial number info, reboot reason, etc. |
| |
| sm serial |
| Retrieve chip unique serial number from sm and write it to memory on |
| appropriate address. |
| |
| sm reboot_reason |
| Print reboot reason to the console, if parameter [name] isn't specified. |
| If parameter specified, set reboot reason string to environment variable |
| with this name. |
| |
| sm efuseread |
| Read <size> bytes starting from <offset> from efuse memory bank and write |
| result to the address <address>. |
| |
| sm efusewrite |
| Write into efuse memory bank, starting from <offset>, the <size> bytes |
| of data, located at address <address>. |
| |
| sm efusedump |
| Read <size> bytes starting from <offset> from efuse memory bank and print |
| them to the console. |
| |
| Configuration |
| ------------- |
| |
| To use the sm command you must specify CONFIG_CMD_MESON=y |
