On Wed, 2015-07-01 at 17:15 +0300, Alexey Brodkin wrote:
From: Alexey Brodkin Alexey.Brodkin@synopsys.com
[1] Align cache management functions to those in Linux kernel. I.e.: a) Use the same functions for all cache ops (D$ Inv/Flush) b) Split cache ops in 3 sub-functions: "before", "lineloop" and "after". That way we may re-use "before" and "after" functions for region and full cache ops.
[2] Implement full-functional L2 (SLC) management. Before SLC was simply disabled early on boot. If SLC exists corresponding ops are run on cache flush/invalidate.
[3] Disable/enable corresponding caches early on boot. So if U-Boot is configured to use caches they will be used at all times (this is useful in particular for speed-up of relocation).
Signed-off-by: Alexey Brodkin abrodkin@synopsys.com
Compared to v1:
- Remove explicit selection of L2CACHE on/off in Kconfig, check this
in runtime and use L2 ops only when L2 is detected. This allows run the same executable on HW with and without L2 cache.
arch/arc/include/asm/arcregs.h | 5 +- arch/arc/include/asm/cache.h | 7 +- arch/arc/lib/cache.c | 375 ++++++++++++++++++++++++++++---
arch/arc/lib/cpu.c | 2 + arch/arc/lib/init_helpers.c | 10 +- arch/arc/lib/start.S | 46 ++++- 6 files changed, 300 insertions(+), 145 deletions(-)
Applied, thanks.
-Alexey