Hello
I'm working with an imx93, non-secure.
Here's my problem: I want to use ocram as shared memory between the linux a55 and the m33.
I have a linux user space test program and an m33 test program that can both access the ocram, but only the first 96KB (20480000 - 20497fff). Can I get more of it? The full 640KB?
The linux test program uses mmap at 0x20480000. It gives a bus error if it goes at or above 0x20498000.
Note: I won't be using the ethosu or rpmsg at all.
How does linux use ocram? Can I increase the 96KB to 640KB?
Thanks
Chris
Hi
You can try to modify ocram permission settings in ATF:plat/imx/imx93/trdc_config.h
Add more memory blocks in trdc_n_mbc, 0-5 means six memory blocks(6*16KB=96KB), you need add more.
Best Regards
Zhiming