1Slimline Open Firmware - SLOF
2
3Copyright (C) 2005, 2012 IBM Corporation
4
5
6INSTALL ON JS20/JS21
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
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
36
37REMOVING SLOF FROM JS20/JS21
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
62
63
64INSTALL 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
73