Bryan Brattlof bb@ti.com writes:
Hi Kamlesh!
On March 2, 2023 thus sayeth kamlesh@ti.com:
From: Kamlesh Gurudasani kamlesh@ti.com
Add support for high security bootflow on am62 devices.
On HS devices, ROM and TIFS will protect the RAM regions with firewalls. This means the wakeup domain's SPL will need to move the stack and heap to HSM RAM to ensure it stays within its allotted memory regions.
...
Thanks for getting this fixed! Does TIFS drop the On Chip SRAM firewall completely once it's started? or only for the r5?
It is open completely after TIFS drops it.
It is generic RAM, should be available for use to all cores. Ideally, it should have been opened up by ROM only, then we wouldn't have run in to this issue. (r5 accessing it before TIFS opens it up)
Thanks for the review.
Reviewed-by: Bryan Brattlof bb@ti.com
~Bryan