Re: [PATCH 20/31] nds32: L2 cache support
From: Arnd Bergmann <arnd@arndb.de>
Date: 2017-11-08 09:48:20
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linux-arch, lkml
On Wed, Nov 8, 2017 at 6:55 AM, Greentime Hu [off-list ref] wrote:
From: Greentime Hu <redacted> Signed-off-by: Vincent Chen <redacted> Signed-off-by: Greentime Hu <redacted>
+ +/* This is defined for head.S to use due to device tree is not yet built. */ +#define L2CC_PA_BASE 0x90F00000
This looks problematic, since it prevents you from using the same head.S for
multiple SoCs that have different L2 controllers or that have them at different
addresses.
What does head.S actually do to the L2CC? Could the boot protocol require
that to be done by the boot loader before entering the kernel instead?
Arnd