I am interested in modifying GRUB to read DMI data from my BIOS
(i.e., the data dmidecode reads). The SMBIOS specification seems to
state that the Plug-n-Play function interface is deprecated while the
table-based interface requires a processor running in 32- or 64-bit
protected mode. Does anyone know where I could find information on a
non-deprecated method to read DMI data while in real mode?
But you just said this can be done by parsing tables in i386 32-bit
mode,
why not just do that?
Btw, which information do you need to obtain from there?
I was under the impression that the DMI tables could be stored above
1MB, and that these memory locations were not easily accessible when
in real mode.
I have now found that, at least in my hardware's case, the DMI tables
are below 1MB and easily read. Is this the case for all hardware?
I have a client that has a piece of hardware that provides an
electronic key via DMI when a physical key is inserted into the
device. I am writing a command that will read that key and store it
in GRUB's environment for Michael Gorven's LUKS module to pick up.
Mike
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