arm64: mmu: invalidate all data caches before enable them (a89cb1cc) · Commits · Wenxi XU / zephyr

arch/arm64/core/mmu.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -7,6 +7,7 @@
		* SPDX-License-Identifier: Apache-2.0
		*/

		#include <cache.h>
		#include <device.h>
		#include <init.h>
		#include <kernel.h>
		@@ -762,6 +763,9 @@ static void enable_mmu_el1(struct arm_mmu_ptables *ptables, unsigned int flags)
		/* Ensure these changes are seen before MMU is enabled */
		isb();

		/* Invalidate all data caches before enable them */
		sys_dcache_all(K_CACHE_INVD);

		/* Enable the MMU and data cache */
		val = read_sctlr_el1();
		write_sctlr_el1(val \| SCTLR_M_BIT \| SCTLR_C_BIT);