AM6442: Loading Uboot through CCS

Hello,
Will the flow discussed in another e2e work for you?
e2e.ti.com/.../4909495
Best,
-Hong

Hi Hong,

Thanks for reply.

I read your post, but I already did step#1~6 in this process(https://software-dl.ti.com/processor-sdk-linux/esd/AM64X/09_00_00_03/exports/docs/linux/Foundational_Components/U-Boot/Apps-Load-in-CCS.html)

The problem is step 7: Loading Uboot image. 

I loaded ELF image on the board, the PC register was not automatically set and send an error message as I uploaded in the original question.

I use sdk 09.00.00.03 and the board is TMDS64EVM.

Thanks.

Best regards,

Chan. 

Hello Chan,

chan kim said:

I loaded the Uboot image(SDK/board-support/u-boot-build/r5/u-boot) and I got an error message.

"SDK/board-support/u-boot-build/r5/u-boot" is not used in boot flow. A good reference on AM64x boot flow
software-dl.ti.com/.../UG-General-Info.html

As noted in the previous referenced e2e
e2e.ti.com/.../4471016
"On K3 SoC (i.e. AM62A, AM62x, AM64x...), u-boot/Linux boot is a multi-stage boot process across multiple cores, which makes loading/debugging the multi-stage boot binaries with JTAG is a non-trivial process.
...
Some recommendations for you to debug the non-working boot issue on the customer board:
1. add a spin loop when building R5 SPL
2. boot the newly built R5 SPL, u-boot... on your board
3. "attach" JTAG to the running board, where "attach" is non-intrusive to the running board or NO HW RESET (don't run any GEL script...)
...
"
Best,
-Hong

Dear Hong,

Thanks for reply.

I followed this reference (https://software-dl.ti.com/processor-sdk-linux/esd/AM64X/09_00_00_03/exports/docs/linux/Foundational_Components/U-Boot/UG-General-Info.html#boot-flow) you recommended and compile U-boot files manually. To use existing images, go to board-support/prebuilt-images to get the pre-build binaries that come in the pre-built SDK (bl31.bin for BL31, bl32.bin for TEE and BINMAN_INDIRS can point to board-support/prebuilt-images itself.

Then, I got the new u-boot-spl.bin, u-boot-spl and u-boot. They are all in the [SDK]/board-support/ti-u-boot/out/r5/ directory.

The files and location is 

From this guide(https://software-dl.ti.com/processor-sdk-linux/esd/AM64X/09_00_00_03/exports/docs/linux/Foundational_Components/U-Boot/Apps-Load-in-CCS.html), step 5,6 is done well.

However, in the step 7, the U-boot ELF image still doesn't work through the CCS loading.

and I got an error again like this.

It is the proper u-boot image file from the above u-boot file?

Would you check step 7 with your AM64X GPEVM in your Lab, if you don't mind ? 

Best regards,

Chan.

Dear Hong,

Would you check step7 with your AM64X GPEVM in your Lab and send the reult? (https://software-dl.ti.com/processor-sdk-linux/esd/AM64X/09_00_00_03/exports/docs/linux/Foundational_Components/U-Boot/Apps-Load-in-CCS.html

We need to see the result and logs from the same process. Thanks.

Best regards,

Chan

Dear Hong,

We solve the problem. Thanks.

Best regards,

Chan.