topic Re: 8MP CPU with 2D DDR bootloader display error for Windows 10 IoT in i.MX Processors

8MP CPU with 2D DDR bootloader display error for Windows 10 IoT

hankwang — Mon, 04 Sep 2023 05:05:43 GMT

Hi.

I have a 8MP PU board with 2G DDR. I modify the device tree and configure it to 2GB.

But the bootloader shows 3GiB. The configuration in yocto bsp uboot is the same. Uboot can show 2GB.

Did I miss some files?

Attached is the 2GB file I modified.

Re: 8MP CPU with 2D DDR bootloader display error for Windows 10 IoT

Sanket_Parekh — Mon, 04 Sep 2023 13:06:07 GMT

Hi @hankwang

I hope you are doing well

Please try to build the image without OPTEE enabled.

As the IMX8M Mini EVK has 2 GB LPDDR4, One can look into its configuration as a reference.

Thanks & Regards

Sanket Parekh

Re: 8MP CPU with 2D DDR bootloader display error for Windows 10 IoT

hankwang — Wed, 06 Sep 2023 09:28:06 GMT

Sorry , 8MM's imx8mm_evk_nt_defconfigfile also enable OP-TEE feature. Where can I disable optee functionality?

Re: 8MP CPU with 2D DDR bootloader display error for Windows 10 IoT

jakub_zigacek — Wed, 06 Sep 2023 13:39:02 GMT

Hi @hankwang,

here is patch for BSP 1.4.1 for i.MX8M Plus EVK with 2GB. You still need to use timing file prepared for your board.

I hope it will work for you better than the 4GB variant.

Best Regards, Jakub

Re: 8MP CPU with 2D DDR bootloader display error for Windows 10 IoT

hankwang — Thu, 07 Sep 2023 10:19:49 GMT

Hi @jakub_zigacek
Thank you for your patch. The DDR size changed from 6G to 2GB.

But I have a problem, the system cannot jump to winpe. I see a boot menu screen. Do you have any idea?

I made sure there were some windows folder on the SD card.

Re: 8MP CPU with 2D DDR bootloader display error for Windows 10 IoT

jakub_zigacek — Thu, 07 Sep 2023 13:00:29 GMT

Hi @hankwang,

do you have at hand an EVK board to test if the SD card will enter win PE?

Tip: If you remove or rename install.cmd.txt on SD card, win PE will start, but will not rewrite emmc content, instead you will end with open command window.

If the content of SD card is correct, than it looks like UEFI is not able to find SD card. It could happened i.g. when SD port is connected to differently then in EVK board. Can you please check, if you have SD card on SDHC2?

If not, you need to adjust it in mu_platform_nxp/NXP/MX8M_PLUS_EVK/AcpiTables/Dsdt-Sdhc.asl and mu_platform_nxp/NXP/MX8M_PLUS_EVK/MX8M_PLUS_EVK.dsc files.

# uSDHCx | iMX8M EVK Connections #------------------------------------- # uSDHC1 | N/A # uSDHC2 | SD Card slot # uSDHC3 | eMMC # uSDHC4 | N/A # giMXPlatformTokenSpaceGuid.PcdSdhc1Base|0x30B40000 giMXPlatformTokenSpaceGuid.PcdSdhc2Base|0x30B50000 giMXPlatformTokenSpaceGuid.PcdSdhc3Base|0x30B60000 giMXPlatformTokenSpaceGuid.PcdSdhc4Base|0x00000000 giMXPlatformTokenSpaceGuid.PcdSdhc1Enable|FALSE giMXPlatformTokenSpaceGuid.PcdSdhc2Enable|TRUE giMXPlatformTokenSpaceGuid.PcdSdhc3Enable|TRUE giMXPlatformTokenSpaceGuid.PcdSdhc4Enable|FALSE giMXPlatformTokenSpaceGuid.PcdSdhc1CardDetectSignal|0xFF00 giMXPlatformTokenSpaceGuid.PcdSdhc1WriteProtectSignal|0xFF01 giMXPlatformTokenSpaceGuid.PcdSdhc2CardDetectSignal|0xFF00 giMXPlatformTokenSpaceGuid.PcdSdhc2WriteProtectSignal|0xFF00 giMXPlatformTokenSpaceGuid.PcdSdhc2DeviceType|0x1 giMXPlatformTokenSpaceGuid.PcdSdhc3CardDetectSignal|0xFF00 giMXPlatformTokenSpaceGuid.PcdSdhc3WriteProtectSignal|0xFF00 giMXPlatformTokenSpaceGuid.PcdSdhc3DeviceType|0x8 giMXPlatformTokenSpaceGuid.PcdSdhc4CardDetectSignal|0xFF00 giMXPlatformTokenSpaceGuid.PcdSdhc4WriteProtectSignal|0xFF01

Best Regards, Jakub

Re: 8MP CPU with 2D DDR bootloader display error for Windows 10 IoT

hankwang — Thu, 16 Nov 2023 07:58:25 GMT

Hi @jakub_zigacek Could you provide me with DDR 4GB patch file? The file is such like this

8MP2GB_BSP_1.4.1_ver_01.zip.

I can install Win10 with DDR 2GB. Because there is a compatibility issue between sdcard and 8MP. So I changed others sdcard, and my device can install Win10 normally and apply the 2GB patch file you provided.

But the same device has DDR 4GB. The hardware is the same, except that the DDR has changed from 2G to 4G.

When the device with 4G DDR, enter winpe and prepare to install win10. When progress start to 1%. the system display BSOD.

The message shows STSTEM THREAD EXCEPTION NOT HANDLED. I think this is 4G DDR parameters setting issue.

So, Could you provide me 4G DDR patch files, such like 2GB patch files?

The DDR is MT53E1G32D2FW-046 WT:B

Re: 8MP CPU with 2D DDR bootloader display error for Windows 10 IoT

hankwang — Mon, 20 Nov 2023 02:23:03 GMT

Hey, do you have any updates regarding the 4GB DDR patch files?

Re: 8MP CPU with 2D DDR bootloader display error for Windows 10 IoT

jakub_zigacek — Wed, 22 Nov 2023 14:32:47 GMT

Hi @hankwang,

sorry for delay. Change to 4GB is easier, you only need to set Bank1 to 1GB size. No relocations as in 2GB patch are needed.

giMX8TokenSpaceGuid.PcdBank1MemorySize|0x0000000040000000

To see correct size in Windows, there is an adjustment in SmbiosPlatformDxe.c too.

But when you use different DDR chip, you need to always use DDR timing file prepared specifically for your DDR and board with DDR tool.

uboot-imx/board/freescale/imx8mp_evk/lpddr4_timing.c

It could work with timing file from different board + DDR chip couple, but only by chance when DDR chips are similar enough and one cannot rely on it. The crashing with 2GB patch could be due to this reason.

Best Regards, Jakub