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120 Software Developer’s Manual
EEPROM Interface
5.6.32 Boot Agent Configuration Customization Options (Word
32h)
Word 32h is used to store the version of the boot agent that is stored in the FLASH image. When
the Boot Agent loads, it can check this value to determine if any first-time configuration needs to
be performed. The agent then updates this word with its version. Some diagnostic tools to report
the version of the Boot Agent in the FLASH also read this word. This word is only valid if the PPB
is set to 0b. Otherwise the contents might be undefined.
2DPS
Disable Protocol Select.
If set to 1b, no changes to the boot protocol is allowed.
The default for this bit is 0b; allow changes to the boot protocol.
1DTM
Disable Title Message.
If set to 1b, the title message displaying the version of the boot agent is
suppressed; the Control-S message is also suppressed. This is for
OEMs who do not wish the boot agent to display any messages at
system boot.
The default for this bit is 0b; allow the title message that displays the
version of the boot agent and the Control-S message.
0DSM
Disable Setup Menu.
If set to 1b, no invoking the setup menu by pressing Control-S is
allowed. In this case, the EEPROM can only be changed via an
external program.
The default for this bit is 0b; allow invoking the setup menu by pressing
Control-S.
Table 5-16. Boot Agent Configuration Customization Options (Word 31h)
Bit Name Description
Table 5-17. Boot Agent Configuration Customization Options (Word 32h)
Bit Name Description
15:12 MAJOR PXE boot agent major version. The default for these bits is 0b.
11:8 MINOR PXE boot agent minor version. The default for these bits is 0b.
7:0 BUILD PXE boot agent build number. The default for these bits is 0b.