Hi Michael,
I still have question. :)
When ARM fetch instruction, it firstly try cache. It then should have cache miss, and forces to reload the instruction from memory?
Why it will have problem while U-boot & Kernel at the same memory location?
2011/3/20 Michael Spang mspang@csclub.uwaterloo.ca:
On 3/19/11, arden jay arden.jay@gmail.com wrote:
Hi Michael, Curiously, have any idea how to test cache stuff?
I don't have any good suggestions for testing cache stuff in general, but this one is pretty easy to test if you have the board in question. Because U-Boot is loaded *as if it were linux* by the manufacturer's bootloader, the initial location of U-Boot is the same as where we ultimately load the Linux kernel. Without this patch the symptom is the failure of Linux to start from U-Boot.
Michael