[esp32s3] Allow .bss segment placed in external memory (IDFGH-8604)

[Mbded]

Answers checklist.

• [X] I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• [X] I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• [X] I have searched the issue tracker for a similar issue and not found a similar issue.

General issue report

Hello

I have some project which was compiled for first version chip esp32 with vesrion esp-idf 4.3. And in this project option CONFIG_SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY was enabled and was used. My new task is compile this same project but under esp32s3. Firstly I wanted to use IDF form master baranch but I received to much error so I decided to change IDF version to 4.4.2 (latest stable) My project was compiled but with error with exhausted memory

Used static IRAM: 66750 bytes ( 295490 remain, 18.4% used) .text size: 65723 bytes .vectors size: 1027 bytes **Used stat D/IRAM: 204889 bytes ( -31961 remain, 118.5% used) Overflow detected!** .data size: 11321 bytes .bss size: 193568 bytes Used Flash size : 1680543 bytes .text : 1213455 bytes .rodata : 466832 bytes Total image size: 1758614 bytes (.bin may be padded larger)

A quick check revealed that I need also to enable Allow .bss segment placed in external memory . Unfortunately under IDF v4.4.2 it is impossible. Can I find some fix for S3 for IDF v4.4.2 ?

[franz-ms-muc]

I think this is solved by ESP-IDF 5.0

[AxelLin]

I think f8249550f82262d3edd3fa2c0a5e29feed8cc0a7 is not available in v4.4 branch.

[GaryChan-work]

Hello @franz-ms-muc, @AxelLin,

We have the same problem here on IDF v4.4.4, could you provide the fix on the coming release e.g. v4.4.5? Thanks for your support!