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What: /sys/kernel/debug/wilco_ec/raw
Date: January 2019
KernelVersion: 5.1
Description:
Write and read raw mailbox commands to the EC.
For writing:
Bytes 0-1 indicate the message type:
00 F0 = Execute Legacy Command
00 F2 = Read/Write NVRAM Property
Byte 2 provides the command code
Bytes 3+ consist of the data passed in the request
At least three bytes are required, for the msg type and command,
with additional bytes optional for additional data.
Example:
// Request EC info type 3 (EC firmware build date)
$ echo 00 f0 38 00 03 00 > raw
// View the result. The decoded ASCII result "12/21/18" is
// included after the raw hex.
$ cat raw
00 31 32 2f 32 31 2f 31 38 00 38 00 01 00 2f 00 .12/21/18.8...
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