Today we received word from mas that he and xorloser have made available a PS3 Cell BE (Broadband Engine) Secure Boot Process PDF document for other PlayStation 3 developers.
Speaking briefly to xorloser, he stated mas recently contacted him with the chart for examination and from there some updates and corrections were made to the diagram until the revised public version was born.
Very cool PS3 developments indeed, and cheers for clarifying the exact PS3 boot process guys!