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This patch introduces the 'memconsole' driver. Our firmware gives us access to an in-memory log of the firmware's output. This gives us visibility in a data-center of headless machines as to what the firmware is doing. The memory console is found by the driver by finding a header block in the EBDA. The buffer is then copied out, and is exported to userland in the file /sys/firmware/log. Signed-off-by: San Mehat <san@google.com> Signed-off-by: Mike Waychison <mikew@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
7 lines
223 B
Text
7 lines
223 B
Text
What: /sys/firmware/log
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Date: February 2011
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Contact: Mike Waychison <mikew@google.com>
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Description:
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The /sys/firmware/log is a binary file that represents a
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read-only copy of the firmware's log if one is
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available.
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