[U-Boot] [PATCH 0/8] MIPS cache code cleanup

Daniel Schwierzeck daniel.schwierzeck at gmail.com
Wed Jan 28 21:31:25 CET 2015


Hi Paul,

Am 26.01.2015 um 16:02 schrieb Paul Burton:
> This series cleans up the MIPS cache code somewhat, and unifies the
> mips32 & mips64 implementations of it. This is largely in preparation
> for further patches adding L2 cache support. The final patch of this
> series fixes a bug encountered with recent cores on Malta boards.

thanks for doing this. I also have this on my to-do list.

Just a thought: if we finally have just the mips_cache_reset function in
cache_init.S, couldn't we reimplement it in C entirely? I see no reason
to implement it in assembler.

> 
> Paul Burton (8):
>   MIPS: avoid .set ISA for cache operations
>   MIPS: unify cache maintenance functions
>   MIPS: unify cache initialization code
>   MIPS: refactor L1 cache config reads to a macro
>   MIPS: refactor cache loops to a macro
>   MIPS: inline mips_init_[id]cache functions
>   MIPS: allow systems to skip loads during cache init
>   MIPS: clear TagLo select 2 during cache init
> 
>  arch/mips/Kconfig                                  |   6 +
>  arch/mips/cpu/mips32/Makefile                      |   3 +-
>  arch/mips/cpu/mips32/cpu.c                         | 119 -----------
>  arch/mips/cpu/mips64/Makefile                      |   2 +-
>  arch/mips/cpu/mips64/cache.S                       | 213 --------------------
>  arch/mips/cpu/mips64/cpu.c                         |  58 ------
>  arch/mips/include/asm/cacheops.h                   |   7 +
>  arch/mips/lib/Makefile                             |   2 +
>  arch/mips/lib/cache.c                              | 118 +++++++++++
>  arch/mips/{cpu/mips32/cache.S => lib/cache_init.S} | 222 +++++++++------------
>  10 files changed, 226 insertions(+), 524 deletions(-)
>  delete mode 100644 arch/mips/cpu/mips64/cache.S
>  create mode 100644 arch/mips/lib/cache.c
>  rename arch/mips/{cpu/mips32/cache.S => lib/cache_init.S} (59%)
> 

-- 
- Daniel


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