-10.4 Serial NVRAM support boot option
-
-nvram:n do not look for serial NVRAM
-nvram:y test controllers for onboard serial NVRAM
-
-This option can also been entered as an hexadecimal value that allows
-to control what information the driver will get from the NVRAM and what
-information it will ignore.
-For details see '17. Serial NVRAM support'.
-
-When this option is enabled, the driver tries to detect all boards using
-a Serial NVRAM. This memory is used to hold user set up parameters.
-
-The parameters the driver is able to get from the NVRAM depend on the
-data format used, as follow:
-
- Tekram format Symbios format
-General and host parameters
- Boot order N Y
- Host SCSI ID Y Y
- SCSI parity checking Y Y
- Verbose boot messages N Y
-SCSI devices parameters
- Synchronous transfer speed Y Y
- Wide 16 / Narrow Y Y
- Tagged Command Queuing enabled Y Y
- Disconnections enabled Y Y
- Scan at boot time N Y
-
-In order to speed up the system boot, for each device configured without
-the "scan at boot time" option, the driver forces an error on the
-first TEST UNIT READY command received for this device.
-
-Some SDMS BIOS revisions seem to be unable to boot cleanly with very fast
-hard disks. In such a situation you cannot configure the NVRAM with
-optimized parameters value.
-
-The 'nvram' boot option can be entered in hexadecimal form in order
-to ignore some options configured in the NVRAM, as follow:
-
-nvram=<bits options>
- 0x01 look for NVRAM (equivalent to nvram=y)
- 0x02 ignore NVRAM "Synchronous negotiation" parameters for all devices
- 0x04 ignore NVRAM "Wide negotiation" parameter for all devices
- 0x08 ignore NVRAM "Scan at boot time" parameter for all devices
- 0x80 also attach controllers set to OFF in the NVRAM (sym53c8xx only)
-
-Option 0x80 is disabled by default.
-Result is that, by default (option not set), the sym53c8xx driver will not
-attach controllers set to OFF in the NVRAM.
-
-10.5 SCSI BUS checking boot option.