AWR1843: How code in the PFlash is loaded to RAM

Rata Zhang

Part Number: AWR1843

Hi,

Is there any reference to the relevant content that how the code in the Pflash is loaded to RAM and how the code is run in the RAM. I have som doubt about the workflow of the SBL demo. From the map files，we can see：

PROG_RAM 00000100 0003ff00 000149e6 0002b51a RW X for xwr18xx_sbl_demo.bin

PROG_RAM 00000100 0007ff00 000269d8 00059528 R X for 18xx_mss_demo.bin

There is an overlapping space of 0x00000100~0x0003ff00.In this situation, how the SBL demo loads the 18xx_mss_demo.bin file to RAM and run it.

Is there any reference for this topic？

Rata

over 1 year ago

0 Saswat Kumar over 1 year ago

TI__Mastermind 35425 points

Hello Rata,

So how it works is that the SBL is the first thing that is loaded in the core.
Its job is to load the application that is in this case: 18xx_mss_demo.bin

That is why you see overlapping memory, because the SBL will load the application content in the PROG_RAM, you can refer the SBL code for that.

Regards,
Saswat Kumar

0 Rata Zhang over 1 year ago in reply to Saswat Kumar

Expert 2840 points

Hi Saswat,

Thanks for your reply. Can I undestand like this? When the SBL load the application, it is run in the DATA_RAM, while the 18xx_mss_demo.bin is loaded in the PROG_RAM, so they are not overlapped, is that right?

Rata

0 Saswat Kumar over 1 year ago in reply to Rata Zhang

TI__Mastermind 35425 points

Hello Rata,

Please expect a reply on this by monday.

Regards,
Saswat Kumar

0 Saswat Kumar over 1 year ago in reply to Rata Zhang

TI__Mastermind 35425 points

Hello Rata,

Yes this understanding is correct.

Regards,
Saswat Kumar

0 Rata Zhang over 1 year ago in reply to Saswat Kumar

Expert 2840 points

Hi Saswat，

Thanks for your reply, I got it.

BR,

Rata

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AWR1843: How code in the PFlash is loaded to RAM