Bull NovaScale 4020, User Manual

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116 NovaScale 4020 User’s Guide
Parameter # Parameter Data (non-volatile unless otherwise noted)
Boot info
acknowledge
(semi-volatile)
[1]
4 These flags are used to allow individual parties to track whether they have seen
and handled the boot information. Applications that deal with boot information
should check the boot info and clear their corresponding bit after consuming the
boot options data.
Data 1: Write Mask (Write-only: This field is returned as 00h when read. This
is to eliminate the need for the BMC to provide storage for the Write Mask
field.)
[7] - 1b = enable write to bit 7 of Data field
[6] - 1b = enable write to bit 6 of Data field
[5] - 1b = enable write to bit 5 of Data field
[4] - 1b = enable write to bit 4 of Data field
[3] - 1b = enable write to bit 3 of Data field
[2] - 1b = enable write to bit 2 of Data field
[1] - 1b = enable write to bit 1 of Data field
[0] - 1b = enable write to bit 0 of Data field
Data 2: Boot Initiator Acknowledge Data
The boot initiator should typically write FFh to this parameter prior to initiating
the boot. The boot initiator may write 0s if it wants to intentionally direct a given
party to ignore the boot info. This field is automatically initialized to 00h when
the management controller is first powered up or reset.
[7] - reserved. Write as 1b. Ignore on read
[6] - reserved. Write as 1b. Ignore on read
[5] - reserved. Write as 1b. Ignore on read
[4] - 0b = OEM has handled boot info
[3] - 0b = SMS has handled boot info
[2] - 0b = OS / service partition has handled boot info
[1] - 0b = OS Loader has handled boot info
[0] - 0b = BIOS/POST has handled boot info