Dell 3250, Руководство по эксплуатации продукта

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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
Boot flags
(semi-volatile)
[1]
5 Data 1
[7] - 1b = Boot flags valid. The bit should be set to indicate that valid flag data
is present. This bit may be automatically cleared based on the boot flag
valid bit clearing parameter, above
[6:0] - Reserved
BIOS support for the following flags is optional. If a given flag is supported, it
must cause the specified function to occur in order for the implementation to be
considered to be conformant with this specification.
The following parameters represent temporary overrides of the BIOS default
settings. BIOS should only use these parameters for the single boot where these
flags were set. If the bit is 0b, BIOS should use its default configuration for the
given option.
Data 2
[7] - 1b = CMOS clear
[6] - 1b = Lock Keyboard
[5:2] - Boot device selector
0000b = No override
0001b = Force PXE
0010b = Force boot from default Hard-drive
[2]
0011b = Force boot from default Hard-drive, request Safe Mode
[2]
0100b = Force boot from default Diagnostic Partition
[2]