ARM: 9433/2: implement cacheinfo support

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On ARMv7 / v7m machines read CTR and CLIDR registers to provide
information regarding the cache topology. Earlier machines should
describe full cache topology in the device tree.

Note, this follows the ARM64 cacheinfo support and provides only minimal
support required to bootstrap cache info. All useful properties should
be decribed in Device Tree.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>

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Dmitry Baryshkov 2025-01-14 12:54:52 +01:00 • committed by Russell King (Oracle)

parent 961d234779

commit a9ff944778

5 changed files with 182 additions and 1 deletions

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1

arch/arm/Kconfig

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6

arch/arm/include/asm/cache.h

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1

arch/arm/kernel/Makefile

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173

arch/arm/kernel/cacheinfo.c

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2

include/linux/cacheinfo.h

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