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| author | Patrice Chotard <patrice.chotard@foss.st.com> | 2021-07-19 12:21:51 +0300 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2021-07-29 02:30:22 +0300 |
| commit | 268f6ac1f95c1734e7eea369e93062e52c4aa04a (patch) | |
| tree | 0ec302db5e1a97b04eb51f5cabbc174380488181 /include/cpu_func.h | |
| parent | 558e699d156ebe7f0b51e05a2e38f35fbaa78b0f (diff) | |
| download | u-boot-268f6ac1f95c1734e7eea369e93062e52c4aa04a.tar.xz | |
arm64: Update memcpy_{from, to}io() helpers
At early U-Boot stage, before relocation, MMU is not yet configured
and disabled. DDR may not be configured with the correct memory
attributes (can be configured in MT_DEVICE instead of MT_MEMORY).
In this case, usage of memcpy_{from, to}io() may leads to synchronous
abort in AARCH64 in case the normal memory address is not 64Bits aligned.
To avoid such situation, forbid usage of normal memory cast to (u64 *) in
case MMU is not enabled.
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Cc: mark.kettenis@xs4all.nl
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Diffstat (limited to 'include/cpu_func.h')
| -rw-r--r-- | include/cpu_func.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/cpu_func.h b/include/cpu_func.h index c3a66f0405..23cd5eca39 100644 --- a/include/cpu_func.h +++ b/include/cpu_func.h @@ -59,6 +59,7 @@ int dcache_status(void); void dcache_enable(void); void dcache_disable(void); void mmu_disable(void); +int mmu_status(void); /* arch/$(ARCH)/lib/cache.c */ void enable_caches(void); |