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-Ramoops oops/panic logger
-=========================
-
-ramoops provides persistent RAM storage for oops and panics, so they can be
-recovered after a reboot. This is a child-node of "/reserved-memory", and
-is named "ramoops" after the backend, rather than "pstore" which is the
-subsystem.
-
-Parts of this storage may be set aside for other persistent log buffers, such
-as kernel log messages, or for optional ECC error-correction data. The total
-size of these optional buffers must fit in the reserved region.
-
-Any remaining space will be used for a circular buffer of oops and panic
-records. These records have a configurable size, with a size of 0 indicating
-that they should be disabled.
-
-At least one of "record-size", "console-size", "ftrace-size", or "pmsg-size"
-must be set non-zero, but are otherwise optional as listed below.
-
-
-Required properties:
-
-- compatible: must be "ramoops"
-
-- reg: region of memory that is preserved between reboots
-
-
-Optional properties:
-
-- ecc-size: enables ECC support and specifies ECC buffer size in bytes
- (defaults to 0: no ECC)
-
-- record-size: maximum size in bytes of each kmsg dump.
- (defaults to 0: disabled)
-
-- console-size: size in bytes of log buffer reserved for kernel messages
- (defaults to 0: disabled)
-
-- ftrace-size: size in bytes of log buffer reserved for function tracing and
- profiling (defaults to 0: disabled)
-
-- pmsg-size: size in bytes of log buffer reserved for userspace messages
- (defaults to 0: disabled)
-
-- mem-type: if present, sets the type of mapping is to be used to map the
- reserved region. mem-type: 0 = write-combined (default), 1 = unbuffered,
- 2 = cached.
-
-- unbuffered: deprecated, use mem_type instead. If present, and mem_type is
- not specified, it is equivalent to mem_type = 1 and uses unbuffered mappings
- to map the reserved region (defaults to buffered mappings mem_type = 0). If
- both are specified -- "mem_type" overrides "unbuffered".
-
-- max-reason: if present, sets maximum type of kmsg dump reasons to store
- (defaults to 2: log Oopses and Panics). This can be set to INT_MAX to
- store all kmsg dumps. See include/linux/kmsg_dump.h KMSG_DUMP_* for other
- kmsg dump reason values. Setting this to 0 (KMSG_DUMP_UNDEF), means the
- reason filtering will be controlled by the printk.always_kmsg_dump boot
- param: if unset, it will be KMSG_DUMP_OOPS, otherwise KMSG_DUMP_MAX.
-
-- no-dump-oops: deprecated, use max_reason instead. If present, and
- max_reason is not specified, it is equivalent to max_reason = 1
- (KMSG_DUMP_PANIC).
-
-- flags: if present, pass ramoops behavioral flags (defaults to 0,
- see include/linux/pstore_ram.h RAMOOPS_FLAG_* for flag values).