View unanswered posts | View active topics It is currently Mon Dec 09, 2019 7:58 pm

Reply to topic  [ 12 posts ]  Go to page Previous  1, 2
 Problems with ACPI tables in BIOS FLT2. 
Author Message

Joined: Fri Jan 11, 2019 1:41 am
Posts: 6
Post Re: Problems with ACPI tables in BIOS FLT2.
An update:

It seems as if I have to withdraw any complaints about IRQ routing tables in the ACPI BIOS/firmware. The problems with the RTOS stem from a conceptual error from the RTOS' vendor, which has now been solved.

The number of interrupts an IOAPIC can serve has been increased in newer processor generations, and the IOAPIC in the E3950 processor used in the fitlet supports 120 instead of a mere 24. Thus the interrupt numbers found in the DSDT are correct, and can now be correctly translated into the MP floating pointer structure.

Though the feature itself seems not to be that new, the application with IRQ numbers larger than 23 seems to be something the RTOS vendor didn't come across before the advent of "apollo lake" systems.

Somewhat embarassed I can now only thank you for your support.

Alas, the interrupt routing table isn't the only thing I (or my RTOS vendor) have problems with, there seems to be an issue with the system clock, but I've not yet found enough information to find at whom I'd point the finger, and as my research has shown exactly the same problem on another "apollo lake" system by a competitor that uses a different BIOS/firmware vendor (that is, "Insyde" instead of "AMI"), I suspect that the problem might again lie with the RTOS vendor or something conceptual with the "apollo lake" processor family.

I'll keep you updated, but I might start another thread for that, since the issue no longer seems to be related to ACPI tables.

Wed Feb 06, 2019 1:23 pm
Site Admin

Joined: Mon Dec 25, 2017 4:21 pm
Posts: 385
Post Re: Problems with ACPI tables in BIOS FLT2.
Very well, thank you for the update.

Tue Feb 12, 2019 12:02 pm
Display posts from previous:  Sort by  
Reply to topic   [ 12 posts ]  Go to page Previous  1, 2

Who is online

Users browsing this forum: No registered users and 1 guest

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group.
Designed by STSoftware for PTF.