IWR6843ISK: SBL Update based on SDK3.3.0.3

JIYEON PARK

Prodigy 180 points

Part Number: IWR6843ISK
Other Parts Discussed in Thread: UNIFLASH, IWR6843

Hello,

I am working on updating SBL.

And I want to test my compiled SBL.

There are some questions regarding it.

I did flash updated sbl.bin(Meta Image1) and demo.bin(Meta Image4) according to SBL_design.pdf.

Flash done successfully.

Since There is backup image, although there is no meta image, I think It have to work properly.

But there is no response from sensor.

After flash demo.bin as meta image, sensor works.

Could you explain why this phenomenon happens?

SBL_imageFlasher function download the application meta image over a device peripheral.

This function is called only once at SBL_initTask like below.

- retVal = SBL_imageFlasher(qspiFlashHandle, (flashAddr + (uint32_t)SBL_METAIMAGE_OFFSET));

As I know, SBL_METAIMAGE_OFFSET is location of meta image.

There is no call SBL_imageFlasher for SBL_BACKUP_IMAGE_OFFSET which is backup image location.

Then how backup image is flashed? And how SBL is flashed?

Looking forward your reply.

Thanks.

over 5 years ago

0 Yogesh Siraswar over 5 years ago

TI__Mastermind 20805 points

Hi,

1) Could you please verify if both xwr68xx_sbl.bin and xwr68xx_mmw_demo.bin were flashed correctly. Please share the flash log if possible.

If the correct SBL from the SDK 3.3 is flashed you should see on the UART cfg port:

If you are not getting anything on UART CFG port, please check the silicon rev for 6843ISK.

2) SBL_imageFlasher function is second stage boot-loader function in xwr68xx_sbl.bin. This will only be called if you want to update the meta image using XMODEM over UART. i.e. when you stop auto boot in the image above. Otherwise the back-up image will be used to boot.

Thanks

Yogesh

0 JIYEON PARK over 5 years ago in reply to Yogesh Siraswar

Prodigy 180 points

Hi,

If SBL_imageFlasher function is used for update meta image,

Which function is used for update SBL and backup image?

0 Yogesh Siraswar over 5 years ago in reply to JIYEON PARK

TI__Mastermind 20805 points

Hi Park,

That is done by uniFlash tool.

Thanks

Yogesh

0 JIYEON PARK over 5 years ago in reply to Yogesh Siraswar

Prodigy 180 points

Hi,

Please give me some hint how SBL + Backup Image is updated.

and from where should I start to analysis Uniflash code?

I guess below folder might be relevant to flash IWR6843.

C:\ti\uniflash_5.3.1\deskdb\content\TICloudAgent\win\ccs_base\mmWave

0 Yogesh Siraswar over 5 years ago in reply to JIYEON PARK

TI__Mastermind 20805 points

Hi,

Please see figure 4 @https://www.ti.com/lit/an/swra627/swra627.pdf for information on ROM boot-loader updating the Flash over UART in SOP 5 mode.

Yes, you can check the window side UART application @C:\ti\uniflash_5.3.1\deskdb\content\TICloudAgent\win\ccs_base\mmWave .

Again with this you will be restricted by 2 MB.

I will suggest you implement some sort of secondary boot-loader application to load the back-up image @2MB + using qspiflash drivers.

Thanks

Yogesh

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IWR6843ISK: SBL Update based on SDK3.3.0.3