[PATCH 63/75] ARM: l2c: zynq: remove cache size override
monstr at monstr.eu
Wed Apr 2 01:08:13 PDT 2014
On 03/28/2014 04:19 PM, Russell King wrote:
> Signed-off-by: Russell King <rmk+kernel at arm.linux.org.uk>
> arch/arm/mach-zynq/common.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
> diff --git a/arch/arm/mach-zynq/common.c b/arch/arm/mach-zynq/common.c
> index 8c09a8393fb6..b58f17178006 100644
> --- a/arch/arm/mach-zynq/common.c
> +++ b/arch/arm/mach-zynq/common.c
> @@ -67,7 +67,7 @@ static void __init zynq_init_machine(void)
> * 64KB way size, 8-way associativity, parity disabled
> - l2x0_of_init(0x02060000, 0xF0F0FFFF);
> + l2x0_of_init(0x02000000, 0xf0ffffff);
> of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
We have done one fix some days/weeks ago which is here.
(Feel free to ignore L2_PREFETCH config option)
There are 2 things there.
1. Extending macros in cache-l2x0.h which I believe can go to the mainline
(when we align with changes you have done in 49/75)
2. Set L2X0_AUX_CTRL_SHARE_OVERRIDE_EN_MASK bit which is what vexpress did.
The reason was problem with gem driver with iperf testing.
Regarding your post about bits 19:17
> Bits 19:17 are the way size, bit 16 (for the PL310) is the associativity
> (8 or 16 ways.) It seems many people have the impression that they have
> to set these values according to the size of the cache and they can't
> rely on the value already initialised by hardware from synthesis the
Reset values are correctly setup by bootrom to 0x02060000
That's why we can even use full mask.
For current mainline code just like this
and we will submit the code which change this to
Please let me know if this is aligned with your goal what you want to reach.
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/
Maintainer of Linux kernel - Xilinx Zynq ARM architecture
Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 263 bytes
Desc: OpenPGP digital signature
More information about the linux-arm-kernel