arch/mips/jz4780: Add support for L2 cache operations#19494
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The common mips_cache.S only handles generic L1 cache operations and does not support L2 (secondary) cache operations required for the JZ4780 target. This commit introduces mti_cache.S to support both L1 and L2 cache operations. The mti_cache.S implementation is BSD licensed from Imagination Technologies. Signed-off-by: Lwazi Dube <lwazeh@gmail.com>
xiaoxiang781216
approved these changes
Jul 21, 2026
jerpelea
approved these changes
Jul 21, 2026
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Summary
The common mips_cache.S only handles generic L1 cache operations and does not support L2 (secondary) cache operations required for the JZ4780 target.
This commit introduces mti_cache.S to support both L1 and L2 cache operations.
The mti_cache.S implementation is BSD licensed from Imagination Technologies.
Impact
Only CI20.
Testing
Tested "net" configuration on MIPS CI20
$ telnet 192.168.2.3
Trying 192.168.2.3...
Connected to 192.168.2.3.
Escape character is '^]'.
NuttShell (NSH) NuttX-13.0.0
nsh> uname -a
NuttX 13.0.0 8c115a1 Jul 20 2026 22:49:32 mips ci20
nsh>