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Search found 20 matches

by BobJC
Wed Aug 08, 2018 2:48 pm
Forum: Firmware Security
Topic: Tool for firmware volume signing
Replies: 3
Views: 186

Re: Tool for firmware volume signing

signtool can be used for general signing, not only for ffs.
by BobJC
Thu May 10, 2018 1:58 pm
Forum: UEFI/BIOS Issue Q&A
Topic: Intel DCI/DAL/CFL-S halt issue
Replies: 10
Views: 871

Re: Intel DCI/DAL/CFL-S halt issue

If I were in you position, I would try the following...
1. Search Intel sighting report for similar issues.
2. Reach Intel FAE or submit IPS ticket for Intel support.
by BobJC
Tue May 08, 2018 2:57 pm
Forum: UEFI MythBusters
Topic: UEFI is safer than BIOS
Replies: 6
Views: 678

Re: UEFI is safer than BIOS

Same reason as above...
by BobJC
Mon May 07, 2018 1:27 pm
Forum: UEFI/BIOS Issue Q&A
Topic: How to read HDD S.M.A.R.T data?
Replies: 8
Views: 617

Re: How to read HDD S.M.A.R.T data?

Hmm... buffer overflow... C language's curse. ;)
Anyway, good to hear that it is resolved.
by BobJC
Wed May 02, 2018 12:01 pm
Forum: UEFI/BIOS Issue Q&A
Topic: Can Intel DAL python commands access the UEFI interfaces on the UUT?
Replies: 3
Views: 330

Re: Can Intel DAL python commands access the UEFI interfaces on the UUT?

I don’t think above practice is applicable since DXE core is skipped and you might not be able to rewind the stack after the invoke. I remember ITP used to have a script macro named loadimage(), which could copy the image to proper memory region and search memory for DXE RT service LoadImage() then ...
by BobJC
Fri Apr 27, 2018 2:39 pm
Forum: UEFI MythBusters
Topic: UEFI boot is faster than legacy boot
Replies: 8
Views: 618

Re: UEFI boot is faster than legacy boot

I would vote False. Lets go deep down to the bottom. If they are implementing the same logic, all of the UEFI C code will be eventually translated to assembly code. Legacy code would normally take the assembly form written by human. So I would vote human instead of compiler since human could keep op...
by BobJC
Fri Apr 27, 2018 11:24 am
Forum: UEFI/BIOS Issue Q&A
Topic: How to read HDD S.M.A.R.T data?
Replies: 8
Views: 617

Re: How to read HDD S.M.A.R.T data?

Then check the validity of the protocol pointer, and use serial output or XDP/DCI to do live debugging to figure out the exact location of the reset.
We should not debug through the community forum, right? ;)
by BobJC
Thu Apr 26, 2018 1:52 pm
Forum: UEFI/BIOS Issue Q&A
Topic: How to read HDD S.M.A.R.T data?
Replies: 8
Views: 617

Re: How to read HDD S.M.A.R.T data?

After HandleProtocol, you should check the return value to make sure the protocol instance is retrieved correctly.
Or else, invalid protocol pointer will lead to exception or reset.
by BobJC
Wed Apr 18, 2018 12:56 pm
Forum: UEFI/BIOS Issue Q&A
Topic: UEFI specification limited to 105 keys?
Replies: 1
Views: 243

Re: UEFI specification limited to 105 keys?

HII spec states the flexibility: https://www.intel.com/content/dam/doc/reference-guide/efi-human-interface-infrastructure-specification-v092.pdf Keyboard Mapping The keyboard mapping that is defined in EFI is loosely based on ISO 9995. The naming mechanism is based on the figure below. The keys that...
by BobJC
Sun Apr 15, 2018 1:59 pm
Forum: Industry News & Rumors
Topic: Replace Your Exploit-Ridden Firmware with Linux
Replies: 0
Views: 278

Replace Your Exploit-Ridden Firmware with Linux

Notice this was mentioned in another topic thread, finnally dug it out from Youtube archive.
Any new progress you know about this? Is google deploying this with AMD chips?

Replace Your Exploit-Ridden Firmware with Linux - Ronald Minnich, Google