TDA4VM: How to load different MCU1_0 apps in SPL?

peitao liu

Part Number: TDA4VM

Tool/software:

We use sdk 10.

And opsi + ufs bootmode.

We are currently determining which Linux image and other core images to load from the UFS rootfs_a or rootfs_b partition in U-Boot by reading a specific value from NOR flash, but the loading of the MCU1_0 app image seems to occur even earlier.

Now we have a requirement to determine, based on the value read from a specific address in NOR flash during the SPL stage, whether to load the MCU1_0 app from rootfs_a or from rootfs_b.

How should we modify this

liupt

8 months ago

0 Keerthy J 8 months ago

TI__Guru**** 166330 points

Hi,

This depends on your implementation. Whether you read from a specific location of OSPI to check if a is the valid partition or b is valid. This is left to the implementation details. The A/B partitioning is not something we offer as part of the SDK.

Best Regards,

Keerthy

0 peitao liu 8 months ago in reply to Keerthy J

Intellectual 590 points

I want to know where in the SPL code the mcu1_0 app is loaded.

liupt

0 peitao liu 8 months ago in reply to Keerthy J

Intellectual 590 points

I would like to confirm whether the MCU1_0 application is integrated into tiboot3.bin.？

In the SPL code, where is tiboot3.bin and tispl.bin loaded?

liupt

0 Keerthy J 8 months ago in reply to peitao liu

TI__Guru**** 166330 points

Hi,

Please check:

https://software-dl.ti.com/jacinto7/esd/processor-sdk-linux-jacinto7/10_01_00_04/exports/docs/linux/Foundational_Components/U-Boot/UG-General-Info.html

And

https://software-dl.ti.com/jacinto7/esd/processor-sdk-linux-jacinto7/10_01_00_04/exports/docs/linux/Foundational_Components/U-Boot/UG-QSPI.html

R5 DM FW is the MCU1_0 binary and that is part of tispl.bin.

This gets loaded by R5 SPL. If you are using OSPI boot medis: common/spl/spl_spi.c

spl_spi_load_image function.

- Keerthy

0 peitao liu 8 months ago in reply to Keerthy J

Intellectual 590 points

Hi Keerthy J

Since the image j7-mcu-r5f0_0-fw is included in tispl.bin, is the file located at /usr/lib/firmware/pdk-ipc/ipc_echo_testb_mcu1_0_release_strip.xer5f (i.e., /usr/lib/firmware/j7-mcu-r5f0_0-fw) still necessary?

liupt

0 Keerthy J 8 months ago in reply to peitao liu

TI__Guru**** 166330 points

Hi,

I checked with remoteproc expert and you are right. It is not necessary to have it in

peitao liu said:
/usr/lib/firmware/pdk-ipc/ipc_echo_testb_mcu1_0_release_strip.xer5f (i.e., /usr/lib/firmware/j7-mcu-r5f0_0-fw)

- Keerthy

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TDA4VM: How to load different MCU1_0 apps in SPL?