i.MX8MP PSTORE/RAMOOPS

zhuliushun — Thu, 29 May 2025 01:54:48 GMT

my board：i.MX8MP

Linux Version：5.4.70

rootfs：Yocto

Now I want to develop the pstore fucntion to store the log when there is a panic happened.

my config about kernel and dts as follows:

CONFIG_PSTORE=y

CONFIG_PSTORE_CONSOLE=y

CONFIG_PSTORE_PMSG=y

CONFIG_PSTORE_RAM=y

CONFIG_PANIC_ON_OOPS=y

CONFIG_PANIC_TIMEOUT=1

and my dts config as below:

ramoops@0x91f00000 {

compatible = "ramoops";

reg = <0 0x91f00000 0 0x00100000>;

record-size = <0x00020000>;

console-size = <0x00020000>;

ftrace-size = <0x00020000>;

pmsg-size = <0x00020000>;

};

and i make kernel panic with the instruct "echo 1 >/proc/sys/kernel/sysrq;echo c >/proc/sysrq-trigger"

later the kernel panic and reboot.but the folder /sys/fs/pstore is empty, the panic log wasn't stored.

and the pstore is mounted OK.is there something wrong?please

topic i.MX8MP PSTORE/RAMOOPS in Other NXP Products