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Annotation of qemu/roms/SLOF/INSTALL, revision 1.1.1.2

1.1       root        1: Slimline Open Firmware - SLOF
                      2: 
1.1.1.2 ! root        3: Copyright (C) 2005, 2012 IBM Corporation
1.1       root        4: 
                      5: 
1.1.1.2 ! root        6: INSTALL ON JS20/JS21
1.1       root        7: ===============================================================================
                      8: 
                      9:  Detailed information about how to use SLOF on JS20 and JS21 can be found in
                     10:  the document FlashingSLOF.pdf
                     11: 
                     12:  The JS20 and JS21 blades both have 2 "flashsides". They have a 8MB flash part
                     13:  which is divided into a 4MB "temporary" side and a 4MB "permanent" side.
                     14: 
                     15:  The temporary side is the flashside used for the normal operation and the
                     16:  permanent side is used as a backup if the temporary should ever fail.
                     17: 
                     18:  Therefore it is important that the permanent flash side is not changed so
                     19:  that if ever required the original firmware can be restored.
                     20: 
                     21:  SLOF usually warns or in most cases does not easily allow to overwrite the
                     22:  permanent side.
                     23: 
1.1.1.2 ! root       24:  !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
        !            25:  !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
        !            26:  !                                                       !
        !            27:  ! NOTE: WHEN FLASHING A NEW FIRMWARE IMAGE YOU MIGHT    !
        !            28:  ! DESTROY YOUR FIRMWARE IMAGE AND LOOSE YOUR WARRANTY!  !
        !            29:  !                                                       !
        !            30:  ! YOU MAY NEED TO CALL SERVICE, IF THE FIRMWARE IMAGE   !
        !            31:  ! IS DESTROYED !                                        !
        !            32:  !                                                       !
        !            33:  !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
        !            34:  !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
        !            35: 
1.1       root       36: 
1.1.1.2 ! root       37: REMOVING SLOF FROM JS20/JS21
1.1       root       38: ===============================================================================
                     39: 
                     40:  If you want to boot the original firmware again, you need to boot the blade 
                     41:  from the management module. If auto-boot is enabled you have to press "s"
                     42:  to reach the firmware prompt.
                     43:  On the SLOF command line, type:
                     44: 
                     45:   0 > other-firmware
                     46: 
                     47:  and it should get you back to running the original firmware. To permanently 
                     48:  get it back, after booting Linux from there, type
                     49: 
                     50:   $ update_flash -r
                     51:   $ halt
                     52:  
                     53:  You will boot on the PERM side. To boot from the TEMP side again, you need to
                     54:  restart the Blade System MGMT Processor.
                     55: 
                     56:     Following steps are needed on
                     57:         Management Module -> Blade Tasks -> Power/Restart
                     58:         
                     59:         Power Off Blade
                     60:         Restart Blade System Mgmt Processor 
                     61:         Power On Blade
1.1.1.2 ! root       62: 
        !            63: 
        !            64: INSTALL ON KVM/QEMU
        !            65: ===============================================================================
        !            66: 
        !            67:  Recent versions of QEMU should already be shipped with a version of SLOF.
        !            68:  To upgrade SLOF in your QEMU installation, back-up the old firmware file
        !            69:  .../share/qemu/slof.bin from your QEMU installation, then simply copy the
        !            70:  new SLOF image (for example "boot_rom.bin" after building board-qemu) to
        !            71:  this location.
        !            72: 

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