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authorLokesh Vutla <lokeshvutla@ti.com>2018-08-27 15:57:13 +0530
committerTom Rini <trini@konsulko.com>2018-09-11 08:32:55 -0400
commite091832f25a06c9b3b5996eb22293d8f9661260a (patch)
tree18103112af39f38b0df1494ae626c8f5ab4cbfba /arch/arm
parentc68721d93ac87afe4fd88520147015388cbe3875 (diff)
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>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-k3/Makefile1
-rw-r--r--arch/arm/mach-k3/arm64-mmu.c45
2 files changed, 46 insertions, 0 deletions
diff --git a/arch/arm/mach-k3/Makefile b/arch/arm/mach-k3/Makefile
index 356fc27b11..e9b7ee5210 100644
--- a/arch/arm/mach-k3/Makefile
+++ b/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
diff --git a/arch/arm/mach-k3/arm64-mmu.c b/arch/arm/mach-k3/arm64-mmu.c
new file mode 100644
index 0000000000..f8b93fe458
--- /dev/null
+++ b/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;