U-Boot
ATCA-F140 Installation and Use (6806800M67H
)
106
Analyzing Kernel Log Files after a Kernel Panic
If the Linux OS running on the ATCA-F140 indicates a kernel panic and you wish to analyze the
cause, then you can issue a reset (using the face plate button for example) and subsequently
analyze kernel log files. Because of the persistent memory feature, these log files are still
available in the memory.
To analyze the kernel log files:
1. Issue a reset.
2. Connect to U-Boot. For more information, see
3. Using the kernel memory map, find the memory addresses of the kernel logs.
4. To display the kernel logfile at any of these memory addresses, enter the following
command:
.printf (<memory address>)
The persistent memory feature can also be useful in the storage of application-specific data.
Use the standard U-Boot variable
pram
to reserve a memory region (at the end of the physical
memory). This allows the reserved region to not be overwritten by U-Boot. U-Boot reports less
memory to the Linux kernel (through the
mem
parameter) so that Linux will not use it either.
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Содержание 6806800M67H
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