1 Ramoops oops/panic logger
2 =========================
4 ramoops provides persistent RAM storage for oops and panics, so they can be
5 recovered after a reboot.
7 Parts of this storage may be set aside for other persistent log buffers, such
8 as kernel log messages, or for optional ECC error-correction data. The total
9 size of these optional buffers must fit in the reserved region.
11 Any remaining space will be used for a circular buffer of oops and panic
12 records. These records have a configurable size, with a size of 0 indicating
13 that they should be disabled.
18 - compatible: must be "ramoops"
20 - memory-region: phandle to a region of memory that is preserved between reboots
25 - ecc-size: enables ECC support and specifies ECC buffer size in bytes
28 - record-size: maximum size in bytes of each dump done on oops/panic
31 - console-size: size in bytes of log buffer reserved for kernel messages
34 - ftrace-size: size in bytes of log buffer reserved for function tracing and
35 profiling (defaults to 0)
37 - pmsg-size: size in bytes of log buffer reserved for userspace messages
40 - unbuffered: if present, use unbuffered mappings to map the reserved region
41 (defaults to buffered mappings)
43 - no-dump-oops: if present, only dump panics (defaults to panics and oops)