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arm: armv8: remove redundant definition of mmu_status

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mmu_status is used in io memcpy functions to prevent accesses to non
8-byte aligned addresses when the mmu is disabled. Though there is a
redundant definition enabled when icaches is turned off by setting
SYS_ICACHE_OFF.

This patch removes the redundant definition, allowing mmu_status to
properly report the status regardless of config settings. This shouldn't
be a problem since access to non 8-byte aligned data can be done
irrespective of icache state.

Fixes: 268f6ac1f95c ("arm64: Update memcpy_{from, to}io() helpers")

Signed-off-by: Anshul Dalal <anshuld@ti.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
This commit is contained in:
Anshul Dalal 2025-09-16 16:52:05 +05:30 committed by Tom Rini
parent e589d5822c
commit 8fd3768ca1
1 changed files with 5 additions and 10 deletions
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15
arch/arm/cpu/armv8/cache_v8.c
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@ -1134,11 +1134,6 @@ int icache_status(void)
return (get_sctlr() & CR_I) != 0;
}
int mmu_status(void)
{
return (get_sctlr() & CR_M) != 0;
}
void invalidate_icache_all(void)
{
__asm_invalidate_icache_all();
@ -1160,17 +1155,17 @@ int icache_status(void)
return 0;
}
int mmu_status(void)
{
return 0;
}
void invalidate_icache_all(void)
{
}
#endif /* !CONFIG_IS_ENABLED(SYS_ICACHE_OFF) */
int mmu_status(void)
{
return (get_sctlr() & CR_M) != 0;
}
/*
* Enable dCache & iCache, whether cache is actually enabled
* depend on CONFIG_SYS_DCACHE_OFF and CONFIG_SYS_ICACHE_OFF