73 lines
2.6 KiB
Plaintext
73 lines
2.6 KiB
Plaintext
Slimline Open Firmware - SLOF
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Copyright (C) 2005, 2012 IBM Corporation
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INSTALL ON JS20/JS21
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===============================================================================
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Detailed information about how to use SLOF on JS20 and JS21 can be found in
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the document FlashingSLOF.pdf
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The JS20 and JS21 blades both have 2 "flashsides". They have a 8MB flash part
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which is divided into a 4MB "temporary" side and a 4MB "permanent" side.
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The temporary side is the flashside used for the normal operation and the
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permanent side is used as a backup if the temporary should ever fail.
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Therefore it is important that the permanent flash side is not changed so
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that if ever required the original firmware can be restored.
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SLOF usually warns or in most cases does not easily allow to overwrite the
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permanent side.
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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! !
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! NOTE: WHEN FLASHING A NEW FIRMWARE IMAGE YOU MIGHT !
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! DESTROY YOUR FIRMWARE IMAGE AND LOOSE YOUR WARRANTY! !
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! !
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! YOU MAY NEED TO CALL SERVICE, IF THE FIRMWARE IMAGE !
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! IS DESTROYED ! !
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! !
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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REMOVING SLOF FROM JS20/JS21
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===============================================================================
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If you want to boot the original firmware again, you need to boot the blade
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from the management module. If auto-boot is enabled you have to press "s"
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to reach the firmware prompt.
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On the SLOF command line, type:
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0 > other-firmware
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and it should get you back to running the original firmware. To permanently
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get it back, after booting Linux from there, type
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$ update_flash -r
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$ halt
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You will boot on the PERM side. To boot from the TEMP side again, you need to
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restart the Blade System MGMT Processor.
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Following steps are needed on
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Management Module -> Blade Tasks -> Power/Restart
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Power Off Blade
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Restart Blade System Mgmt Processor
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Power On Blade
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INSTALL ON KVM/QEMU
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===============================================================================
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Recent versions of QEMU should already be shipped with a version of SLOF.
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To upgrade SLOF in your QEMU installation, back-up the old firmware file
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.../share/qemu/slof.bin from your QEMU installation, then simply copy the
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new SLOF image (for example "boot_rom.bin" after building board-qemu) to
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this location.
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