I know BITS (http://biosbits.org/) can do things like that.
I don't know if the python in the edk has the modifications required to support
what you are asking about, It may, but the one in BITS makes such access very
clean and easy.
One detail to understand about the Python in BITS is that the Python runs in
GRUB. The GRUB in BITS can be started from the Shell though. So it's not a big
problem. When you exit from GRUB you are back at the Shell prompt if that's
where GRUB was launched from.BITS primarily uses the GRUB menu ability to
provide a totally configurable menu user interface for launching Python
scripts. You may also find this useful.
Here's a short list of the features of the Python in BITS* Based on 2.7.9*
Using CTypes provides python objects for SMBIOS, ACPI tables etc* Shell file
device R/W access* Script output capturing that can be persisted to a shell
file device.* Access to memory, IO, MSR and PCI config space* System core and
processor information* Ability to execute scripts from a script on a designated
processor* An ACPICA implementation* And more ...
More on the included ACPICA that allows accessing the ACPI of the BIOS from
python. The implementation isn't a fully functional OSPM but enough to query
APCI tables and static values in the DSDT, SSDT tables and invoke methods. By
setting an option from python the OSPM through the ACPI can access IO in
addition to just the default memory access. With a trivial source change, from
what I see, the ACPICA would even support access to MSRs and PCI configuration
space.
Using as examples the included UEFI support Python access to the UEFI is wide
open, IMO.
Full source for everything in BITS is included in the BITS download and can be
easily built in Linux and there are regular updates as new features are added
and improvements done to existing features. That latest update was 4/10/2015.
BITS can also be downloaded from the Intel web site.
https://downloadcenter.intel.com/download/19763
To be clear, after all the hype for BITS, I'm just a BITS end user that has
found the python support in BITS to be a welcome tool to have for BIOS testing.
From: "tiger...@zhaoxin.com" <tiger...@zhaoxin.com>
To: edk2-devel@lists.sourceforge.net
Sent: Thursday, April 16, 2015 11:11 PM
Subject: [edk2] Python script could call LocateHandle function?
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90.0pt 72.0pt 90.0pt;}#yiv9640260881 div.yiv9640260881WordSection1 {}-->Hi,
experts: I have a question about Python script. Could I call Boot Service
function in Python script? Such as: Call BootServices->LocateHandle() in python
script! Best wishes,
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