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author | Sascha Hauer <s.hauer@pengutronix.de> | 2016-09-29 14:38:07 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2016-09-29 14:38:07 +0200 |
commit | d9a15385467936649b6c2cfeb7ab377002ddce0f (patch) | |
tree | 39175107fc884a29fbba83f47d104f493833fe19 /dts/Bindings/reserved-memory | |
parent | bfe946c9593513b0ad1b440bcd997b263487b945 (diff) | |
download | barebox-d9a15385467936649b6c2cfeb7ab377002ddce0f.tar.gz barebox-d9a15385467936649b6c2cfeb7ab377002ddce0f.tar.xz |
dts: update to v4.8-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/reserved-memory')
-rw-r--r-- | dts/Bindings/reserved-memory/ramoops.txt | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/dts/Bindings/reserved-memory/ramoops.txt b/dts/Bindings/reserved-memory/ramoops.txt new file mode 100644 index 0000000000..e81f821a21 --- /dev/null +++ b/dts/Bindings/reserved-memory/ramoops.txt @@ -0,0 +1,48 @@ +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 dump done on oops/panic + (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) + +- unbuffered: if present, use unbuffered mappings to map the reserved region + (defaults to buffered mappings) + +- no-dump-oops: if present, only dump panics (defaults to panics and oops) |