| 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... |
