| 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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| Detailed information about how to use SLOF on JS20 and JS21 can be found in |
| the document FlashingSLOF.pdf |
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| The JS20 and JS21 blades both have 2 "flashsides". They have a 8MB flash part |
| 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 |
| 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 |
| 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 |
| permanent side. |
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| !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
| !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
| ! ! |
| ! NOTE: WHEN FLASHING A NEW FIRMWARE IMAGE YOU MIGHT ! |
| ! DESTROY YOUR FIRMWARE IMAGE AND LOOSE YOUR WARRANTY! ! |
| ! ! |
| ! YOU MAY NEED TO CALL SERVICE, IF THE FIRMWARE IMAGE ! |
| ! IS DESTROYED ! ! |
| ! ! |
| !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
| !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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| REMOVING SLOF FROM JS20/JS21 |
| =============================================================================== |
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| If you want to boot the original firmware again, you need to boot the blade |
| from the management module. If auto-boot is enabled you have to press "s" |
| to reach the firmware prompt. |
| 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 |
| get it back, after booting Linux from there, type |
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| $ update_flash -r |
| $ halt |
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| You will boot on the PERM side. To boot from the TEMP side again, you need to |
| restart the Blade System MGMT Processor. |
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| Following steps are needed on |
| Management Module -> Blade Tasks -> Power/Restart |
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| Power Off Blade |
| Restart Blade System Mgmt Processor |
| Power On Blade |
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| INSTALL ON KVM/QEMU |
| =============================================================================== |
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| Recent versions of QEMU should already be shipped with a version of SLOF. |
| To upgrade SLOF in your QEMU installation, back-up the old firmware file |
| .../share/qemu/slof.bin from your QEMU installation, then simply copy the |
| new SLOF image (for example "boot_rom.bin" after building board-qemu) to |
| this location. |
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