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-rw-r--r--arch/arm/cpu/armv8/cache_v8.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/cache_v8.c b/arch/arm/cpu/armv8/cache_v8.c
index df15e0066d..d1bd06bedf 100644
--- a/arch/arm/cpu/armv8/cache_v8.c
+++ b/arch/arm/cpu/armv8/cache_v8.c
@@ -566,6 +566,15 @@ void mmu_set_region_dcache_behaviour(phys_addr_t start, size_t size,
#else /* CONFIG_SYS_DCACHE_OFF */
+/*
+ * For SPL builds, we may want to not have dcache enabled. Any real U-Boot
+ * running however really wants to have dcache and the MMU active. Check that
+ * everything is sane and give the developer a hint if it isn't.
+ */
+#ifndef CONFIG_SPL_BUILD
+#error Please describe your MMU layout in CONFIG_SYS_MEM_MAP and enable dcache.
+#endif
+
void invalidate_dcache_all(void)
{
}
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