[U-Boot] [PATCH v2 08/10] armv8: layerscape: Flush MMU tables after creattion

[York Sun]

MMU tables should be flushed if current code runs with d-cache on. This
applies to early MMU tables with SPL boot, and all final MMU tables.

Signed-off-by: York Sun <york.sun at nxp.com>
---

Changes in v2: None

 arch/arm/cpu/armv8/fsl-layerscape/cpu.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
index 800ad62..fcf8a75 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
@@ -80,6 +80,13 @@ static inline void early_mmu_setup(void)
 	/* Create early page tables */
 	setup_pgtables();
 
+
+#if defined(CONFIG_SPL) || !defined(CONFIG_SPL_BUILD)
+	/* For SPL RAM boot, cache is enabled. MMU table needs to be flushed */
+	flush_dcache_range(gd->arch.tlb_addr,
+			   gd->arch.tlb_addr + gd->arch.tlb_size);
+#endif
+
 	/* point TTBR to the new table */
 	set_ttbr_tcr_mair(el, gd->arch.tlb_addr,
 			  get_tcr(el, NULL, NULL) &
@@ -184,6 +191,8 @@ static inline void final_mmu_setup(void)
 	/* flush new MMU table */
 	flush_dcache_range(gd->arch.tlb_addr,
 			   gd->arch.tlb_addr + gd->arch.tlb_size);
+	flush_dcache_range(gd->arch.tlb_emerg,
+			   gd->arch.tlb_emerg + gd->arch.tlb_size);
 
 	/* point TTBR to the new table */
 	set_ttbr_tcr_mair(el, gd->arch.tlb_addr, get_tcr(el, NULL, NULL),
-- 
2.7.4