armv8: K3: am654: Add custom MMU support

Add MMU mappings for AM654 SoC.

Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

arch/arm/mach-k3/Makefile

@@ -4,3 +4,4 @@
 #	Lokesh Vutla <lokeshvutla@ti.com>
 
 obj-$(CONFIG_SOC_K3_AM6) += am6_init.o
+obj-$(CONFIG_ARM64) += arm64-mmu.o

arch/arm/mach-k3/arm64-mmu.c

@@ -0,0 +1,45 @@
+// SPDX-License-Identifier:     GPL-2.0+
+/*
+ * K3: ARM64 MMU setup
+ *
+ * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
+ *	Lokesh Vutla <lokeshvutla@ti.com>
+ * (This file is derived from arch/arm/cpu/armv8/zynqmp/cpu.c)
+ *
+ */
+
+#include <common.h>
+#include <asm/system.h>
+#include <asm/armv8/mmu.h>
+
+/* NR_DRAM_BANKS + 32bit IO + 64bit IO + terminator */
+#define NR_MMU_REGIONS	(CONFIG_NR_DRAM_BANKS + 3)
+
+/* ToDo: Add 64bit IO */
+struct mm_region am654_mem_map[NR_MMU_REGIONS] = {
+	{
+		.virt = 0x0UL,
+		.phys = 0x0UL,
+		.size = 0x80000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE |
+			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	}, {
+		.virt = 0x80000000UL,
+		.phys = 0x80000000UL,
+		.size = 0x80000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+			 PTE_BLOCK_INNER_SHARE
+	}, {
+		.virt = 0x880000000UL,
+		.phys = 0x880000000UL,
+		.size = 0x80000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+			 PTE_BLOCK_INNER_SHARE
+	}, {
+		/* List terminator */
+		0,
+	}
+};
+
+struct mm_region *mem_map = am654_mem_map;