Talk:Boot Order

PS3 Bootsequence:

Power on : syscon boots from it's internal (non-encrypted / dual banked) ROM *1 *2

    + syscon powers up and configures Cell
    + syscon pulls the reset of Cell high -> Cell INIT

Cell INIT: CELL boots from it's internal ROM *2

    + Initialises RAM
    + fetches bootldr off NAND/NOR flash
    + loads bootldr into Isolated SPU (SPE0)
    + bootldr decrypts lv0 which runs on PPU -> loaders INIT

loaders INIT: lv0 loads metldr (SPE2)

    + passes lv1ldr (which loads lv1) to metldr
    + passes lv2ldr (which loads lv2) to metldr
    + passes appldr (which loads vsh) to metldr
    + passes isoldr (which loads *.iso_spu_module) to metldr
    + passes rvkldr (which loads rvkprg / rvklist) to metldr

• 1) Read/Writeable with undocumented / should also be read/writeable through serial port and possible to switch it to the backup bank1 with backup_mode pulled high
• 2) CEX/Retail consoles go to standby with red light. SEX/SHOP/SECH will not standby, but instead boot through without waiting for powerbutton. Also check is done on all models if update is flagged to set it into firmware updating procedure
• 3) Partialy Read/Writeable

about the disabled SPE: syscon reads it’s internal (non-encrypted) eeprom @ 0x48C30 which is value 0×06 on all CEX/Retail consoles and will set the cell config ring accordingly for 7 SPE’s. SPE0 and SPE2 are reserved for bootldr and metldr for isolation respectively. Setting the value to a nonworking state (e.g. 0×00, 0xFF, enabling a defective SPE or disabling a needed SPE for proper boot) might brick the console, locking you out from restoring the correct value to the syscon eeprom.