I have multiple systems with Core i7 1185GRE processors on UP Xtreme i11 Series boards, I'm using them for realtime applications, and I have to do optimizations now to go further. A cyclic task jitter is higher than expected and high peaks are happening randomly. I'm using Ubuntu 24.04 / 6.8 realtime kernel currently, TCC and all related parameters set up correctly in the BIOS, kernel parameters also set up correctly. The next thing would be to separate allocate dedicated LLC cache ways for realtime cores.

This guide was really helpful, I followed it thorughout the setup. The documentation is implying that I should be able to customize L3 / LLC cache allocation. But in reality I couldn't find make it work using documentations. The standard tool would be RDT / pqos tools, but pqos only lists L2 level cache, it says that L3 is not settable, it does not list them. I also tried to use msr with no luck, the corresponding addresses couldn't be set.

I understood from this documentation, that on some of the CPU's this is non-architectural, so as of my understanding, standard tools couldn't be used there, so I tried to install TCC Tools

This article is showing the result of setting LLC cache with this CPU family succesfully with an other board, they were using i5 version of this processor, so I suppose it should be done with i7 with no problems.

I tried to use ECI tools, used the (currently) latest v3.3 to generate currently available Ubuntu 22.04 and 24.04 images, tried to install TCC tools using this guide, but the verification step fails,

sudo /usr/share/tcc_tools/scripts/setup_ssram/tcc_setup_ssram.sh enable --verify

I'm using UEFI BIOS, at boot time there is an error "No SSRAM Region found!" and "Start RTCM hypervisor runtime driver failed."

I checked the BIOS settings many times very carefully, but I do not have option in the BIOS called Software-SRAM (SSRAM) or Data Streams Optimizer (DSO), I believe that these are the missing pieces to be able to proceed.

I got stuck, does anybody have some thoughts or experiences on this matter? Is it even possible to do this with this board? Any thoughts would be appreciated.

Many thanks!

The OS installed is Windows 11

Then when entered exit it opens the Aptio Setup utility the main menu in this shows

the chipset menu shows the following menus

The boot menu shows the following

The boot options for all the 11 boot options are same

Is there a way to overcome this?

by now I'm aware that the version 0001 is missing GPIO pins. After some research I found out that the 0001 version has different BIOS that disables the GPIO functionality and even hides the settings.

Unfortunately I really need the GPIO and version 0000 is unavailable where I am. My question is - can I solder the GPIO pins and flash the version 0000 BIOS to enable the GPIO functionality? Thanks.

I can't use the COM cable FWAA-1375 directly, because the pinout for the connector CN11 is different from the pinout for the connector CN28/CN29.
I have modified the cable accordingly and only use the signals "Rx", "Tx" and "GND".

The cable is electrically OK; on the remote terminal I receive characters when the computer is started.
However, these are "cryptic" characters, although the remote terminal ("gtkterm") is set to 115200 baud 8N1 (without hardware flow control).
On the board "UP Xtreme i11" I use the program "minicom" for the test and have set the port /dev/ttyS0 also to 115200 Baud 8N1 (without Harware Flow Control) .

Do I have to make any settings in the BIOS for the "HSUART2"?
Do I have to use a special Linux kernel driver?

Thank you in advance for your help!

Jan-Marc Stranz.

The User's Manual up_xtreme_i11_upx-tgl01_manual_1st_ed_0615_1.pdf, section 2.3.20, shows pins 1 to 9 used, with pin 10 as NC. The ordering of pins 1 to 9 matches that of a standard DB9 RS232 connector.

But the datasheet for the recommended FWAA-1375 serial cable 170x000255_fwaa-1375.pdf shows all the pins reversed. Pin 10 on COM1 goes to pin 1 of the DB9, Pin 9 of COM1 goes to pin 2 of the DB9, and so on. Pin 1 of COM1 is not used.

Does anyone know how it should be wired?

Pins 8, 9 and 10 of that connector are GND, UART_TX and UART_RX.

But I can't find out much about that connection. Is it a standard serial port I can use? Do I need a level shifter in order to connect it to an RS232 device, and if so is it 3.3V or 5V?

I have been trying to power up my new i11. I tried the barrel jack with a 12V/10A power supply, as well as a standard PC ATX PSU. The i11 is completely unresponsive. No lights, no fan, nothing. Is this board DOA?

This is the memory I have installed: https://www.amazon.com/gp/product/B097QK6M3W/ref=ppx_yo_dt_b_asin_title_o01_s01?ie=UTF8&psc=1

I also have the WiFi/BLE (CN12) and Hailo (CN13) modules installed, and a SATA III SSD drive connected and powered via the i11.

My monitor is connected via DVI and my keyboard and mouse via USB 2.0.