17 Oct
2015
17 Oct
'15
4:59 a.m.
On 10/17/2015 06:56 AM, Marek Vasut wrote:
But nios2 cpu with 4 bytes dcache line size does not support this instruction. So we don't implement the invalidate_dcache_range/all() in u-boot yet.
Where did you find this information ?
Please find it on the foot note of table 7, page 8 of "Nios II Core Implementation Detail" manual,
The 4-byte line data cache implementation substitutes the flushd instruction for the flushda instruction and triggers an unimplemented instruction exception for the initda instruction. The 16-byte and 32-byte line data cache implementations fully support the flushda and initda instructions.
Best regards, Thomas