2018-03-28 06:58:52 +00:00
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## lsirec - LSI SAS2008/2108 HBA low-level recovery tool for Linux
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2018-03-27 17:18:47 +00:00
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Currently supports reading and writing the SBR. In the future it may support
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cold-booting the adapter to recover bricked adapters or crossflash between
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firmwares directly from Linux.
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Use [lsiutil](https://github.com/exactassembly/meta-xa-stm/blob/master/recipes-support/lsiutil/files/)
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to crossflash between IT/IR firmwares from Linux, without vendor/product ID
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restrictions.
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## Quick guide to cleanly crossflash between IT/IR firmwares
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`# lsiutil -e`
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Select your adapter.
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`46. Upload FLASH section` → `5. Complete (all sections)`
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Make a complete Flash backup to be safe.
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2018-03-27 17:34:35 +00:00
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`67. Dump all port state`
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`68. Show port state summary`
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2018-03-27 17:18:47 +00:00
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Copy and paste these somewhere safe. Take special note of the SAS WWID.
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`33. Erase non-volatile adapter storage` → `3. FLASH`, then also
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`8. Persistent manufacturing config pages`
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Wipe the whole Flash. This will take a while. Option number 3 excludes the
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manufacturing config pages, so you need both.
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`2. Download firmware (update the FLASH)`
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Flash the new firmware. Optionally, use
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`4. Download/erase BIOS and/or FCode (update the FLASH)` to flash the BIOS/EFI
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module (not necessary if you're not booting from the adapter).
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Exit lsiutil.
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`# ./lsirec 0000:01:00.0 readsbr sbr_backup.bin`
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Where 0000:01:00.0 is your PCI device ID.
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`# python3 sbrtool.py parse sbr_backup.bin sbr.cfg`
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Edit sbr.cfg with your favorite text editor. You may want to add
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`SASAddr = 0xYOUR_SAS_WWID` to make the SAS WWID is persist in the SBR (I'm not
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sure how/when this is used, but I've seen it in some SBRs). You may want to
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change the Subsystem VID/PID, or use another SBR as a template.
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2018-03-27 17:34:35 +00:00
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`# python3 sbrtool.py build sbr.cfg sbr_new.bin`
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`# ./lsirec 0000:01:00.0 writesbr sbr_new.bin`
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2018-03-27 17:18:47 +00:00
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Reboot and cross your fingers.
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When the system comes back up, if all went well, launch `lsiutil -e` again and
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use `18. Change SAS WWID` to update the WWID if necessary, then reboot again
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(this writes it to the config section in Flash, not to the SBR).
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## Disclaimer
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2018-03-28 06:58:52 +00:00
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This has barely been tested a couple of cards. Don't blame me if this bricks or
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smokes your HBA. For crossflashing MegaRAID cards to IT/IR, you'll still need
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to flash from DOS/UEFI for now, since lsiutil does not work with non-operational
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2018-03-27 17:18:47 +00:00
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adapters under Linux.
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2018-03-28 06:58:52 +00:00
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DO NOT attempt to use this tool on non-SAS2x08 chipsets. It probably won't work
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2018-03-27 17:18:47 +00:00
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and may do horrible things. This tool deliberately does not check the VID/PID
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so it can be used on cards with wacky SBRs, but that means it will happily
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try to write the SBR into any random PCI device too.
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2018-03-28 06:58:52 +00:00
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I have tested this on an LSI SAS2108-based MegaRAID card (Fujitsu D2616) with
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MegaRAID firmware and it successfully backed up the SBR, but the action
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triggered a PCI error in syslog (though the controller kept working). Your
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mileage may vary.
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2018-03-27 17:18:47 +00:00
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## License
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2-clause BSD. See the LICENSE file.
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