Date: Mon, 28 Mar 2011 17:41:33 -0700 From: Nerius Landys <nlandys@gmail.com> To: freebsd-current@freebsd.org Subject: What's so special about 0xffff EEPROM checksum Message-ID: <AANLkTime069OeZ%2B6mJrES2uSZDeE6YjFmpOKx7UC1K=v@mail.gmail.com>
next in thread | raw e-mail | index | archive | help
I'm looking at driver code in the FreeBSD kernel, and pretty much everywhere I look I see a check for EEPROM checksum. It's always 0xffff. What is so special about this value 0xffff? Is this value agreed upon by hardware manufacturers? So basically they have one end slot for data where they put in the last bytes in order to ensure that the checksum is always 0xffff?
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?AANLkTime069OeZ%2B6mJrES2uSZDeE6YjFmpOKx7UC1K=v>