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kconfig: Unify CACHE_* options

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The kconfig options to configure the cache flushing framework are
currently living in the arch-specific kconfigs of ARC and X86 (32-bit)
architectures even though these are defining the same things.

Move the common symbols in one place accessible by all the architectures
and create a menu for those.

Leave the default values in the arch-specific locations.

Signed-off-by: Carlo Caione <ccaione@baylibre.com>
This commit is contained in:
Carlo Caione 2020-12-02 13:05:37 +01:00 • committed by Anas Nashif
commit 923b3be890
3 changed files with 28 additions and 55 deletions
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29
arch/x86/core/Kconfig.ia32
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@ -140,25 +140,8 @@ config LAZY_FPU_SHARING
endmenu
config CACHE_LINE_SIZE_DETECT
bool "Detect cache line size at runtime"
default y
help
This option enables querying the CPUID register for finding the cache line
size at the expense of taking more memory and code and a slightly increased
boot time.
If the CPU's cache line size is known in advance, disable this option and
manually enter the value for CACHE_LINE_SIZE.
config CACHE_LINE_SIZE
int "Cache line size" if !CACHE_LINE_SIZE_DETECT
default 64 if CPU_ATOM
default 0
help
Size in bytes of a CPU cache line.
Detect automatically at runtime by selecting CACHE_LINE_SIZE_DETECT.
config CLFLUSH_INSTRUCTION_SUPPORTED
bool "CLFLUSH instruction supported"
@ -185,18 +168,6 @@ config CLFLUSH_DETECT
If the CPU's support (or lack thereof) of CLFLUSH is known in advance, then
disable this option and set CLFLUSH_INSTRUCTION_SUPPORTED as appropriate.
config ARCH_CACHE_FLUSH_DETECT
bool
default y
depends on CLFLUSH_DETECT
config CACHE_FLUSHING
bool "Enable cache flushing mechanism"
help
This links in the sys_cache_flush() function. A mechanism for flushing the
cache must be selected as well. By default, that mechanism is discovered at
runtime.
config X86_DYNAMIC_IRQ_STUBS
int "Number of dynamic interrupt stubs"
depends on DYNAMIC_INTERRUPTS