IWR6843AOP: Can I flash 2 images whose size is greater than 512KB in Meta Image2 and Meta Image4 - Uniflash

Tu Tran

Part Number: IWR6843AOP
Other Parts Discussed in Thread: UNIFLASH,

I already know that the relative offset of each meta image in Uniflash is 512KB, but our current app size is larger than 512KB and we also need to write 3 bin files:

+ bin 1: SBL (size 63kb at meta image 1 address 0x00000000)
+ bin 2: capacity greater than 512KB at meta image 2 address 0x80000
+ bin 3: capacity greater than 512KB at meta image 4 address 0x180000

My goal is to use SBL in meta image 1 to choose to load file bin 2 or bin 3 into RAM. But there are some problems, when the program operating file bin 3 in meta image 4 (address 0x180000) is loaded into RAM by the bootloader, it will ignore the SBL in meta image 1 (address 0x00000000).

I look forward to hearing from the support team as soon as possible
Thanks

over 1 year ago

0 Nathan Block over 1 year ago

TI__Mastermind 37805 points

Hi,

Have you seen this similar post? It may help.

https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/960845/iwr6843-can-i-flash-a-image-whose-size-is-greater-than-512kb-in-meta-image4---uniflash

Best,

Nate

0 Tu Tran over 1 year ago in reply to Nathan Block

Prodigy 52 points

I have read the post https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/960845/iwr6843-can-i-flash-a-image-whose-size-is-greater-than-512kb-in-meta-image4---uniflash, but it couldn't solve the problem I was having. I want to know why when I flashed 2 .bin files including SBL.bin (size 64kb) into meta image 1 and a file larger than 512kb into meta image 4, bootloader skipped the SBL at image 1 and it selected image from meta image4 to load into RAM.

0 Nathan Block over 1 year ago in reply to Tu Tran

TI__Mastermind 37805 points

Hi,

Can you try putting the appimage file in Meta Image 3 and see if the results are the same?

Best,

Nate

0 Tu Tran over 1 year ago in reply to Nathan Block

Prodigy 52 points

Thank you for your feedback,
I tried with image 3, it works very well.
But my application needs to use image 4 as I mentioned above in the article.
What's special about Image 4?. It seems that the bootloader always chooses image4 and it ignores the SBL.bin file at image1

Thank you

0 Nathan Block over 1 year ago in reply to Tu Tran

TI__Mastermind 37805 points

Hi,

We are working on an answer for you. If I don't reply with an answer within 24 hours, feel free to ping this thread again.

Best,

Nate

0 Tu Tran over 1 year ago in reply to Nathan Block

Prodigy 52 points

Thank you for your feedback
I look forward to your fastest support

Best Regards,

Tu Tran

+1 Nathan Block over 1 year ago in reply to Tu Tran

TI__Mastermind 37805 points

Hi,

If the image is in metaimage 4, then it will overwrite the SBL. When the regular device bootloader attempts to boot, it will not find a valid image in metaimage 1, 2 or 3, and so it will go to metaimage 4 (skipping the SBL and going right to your application code).

Best,

Nate

0 Tu Tran over 1 year ago in reply to Nathan Block

Prodigy 52 points

Thanks for your response, your answer really helped me :)
I have one more question to ask, I have checked the schematic of IWR6843AOP. I see the device uses MX25R1635 16MB external flash. Why did TI divide it into 4 partitions containing images smaller than 16MB in size?
Can I write images to flash address C0280000? Does it have any effect on the bootloader's operation?

Best Regards,

Tu Tran

0 Nathan Block over 1 year ago in reply to Tu Tran

TI__Mastermind 37805 points

Hi,

For new questions, please open a new thread. This helps us keep our forum organized. I will respond to your question when you open a new thread. You may copy+paste your question exactly as above. Thank you!

Best,

Nate

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IWR6843AOP: Can I flash 2 images whose size is greater than 512KB in Meta Image2 and Meta Image4 - Uniflash