21
ICH8—NVM Information Guide
1.4.23.3
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.
Table 20.
Boot Agent Configuration Customization Options (Word 32h)
2
DPS
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.
1
DTM
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 want 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.
0
DSM
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.
Bit
Name
Description
Bit
Name
Description
15:12
MAJOR
PXE boot agent major version. The default for these bits is 0001b.
11:8
MINOR
PXE boot agent minor version. The default for these bits is 0010b.
7:0
BUILD
PXE boot agent build number. The default for these bits is 00101000b
