arm: exynos: add support for Exynos7420 SoC
Add support for Exynos7420 SoC. The Exynos7420 SoC has four Cortex-A57
and four Cortex-A53 CPUs and includes various peripheral controllers.
Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index 28a6a60..0a6cb33 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -20,6 +20,14 @@
Cortex-A7 CPU in big.LITTLE configuration). There are multiple SoCs
in this family including Exynos5250, Exynos5420 and Exynos5800.
+config ARCH_EXYNOS7
+ bool "Exynos7 SoC family"
+ select ARM64
+ help
+ Samsung Exynos7 SoC family are based on ARM Cortex-A57 CPU or
+ Cortex-A53 CPU (and some in a big.LITTLE configuration). There are
+ multiple SoCs in this family including Exynos7420.
+
endchoice
if ARCH_EXYNOS4
diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile
index f3c07b7..0cc6c32 100644
--- a/arch/arm/mach-exynos/Makefile
+++ b/arch/arm/mach-exynos/Makefile
@@ -7,6 +7,7 @@
obj-y += soc.o
obj-$(CONFIG_CPU_V7) += clock.o pinmux.o power.o system.o
+obj-$(CONFIG_ARM64) += mmu-arm64.o
obj-$(CONFIG_EXYNOS5420) += sec_boot.o
diff --git a/arch/arm/mach-exynos/mmu-arm64.c b/arch/arm/mach-exynos/mmu-arm64.c
new file mode 100644
index 0000000..ba6d99d
--- /dev/null
+++ b/arch/arm/mach-exynos/mmu-arm64.c
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2016 Samsung Electronics
+ * Thomas Abraham <thomas.ab@samsung.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/armv8/mmu.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_EXYNOS7420
+static struct mm_region exynos7420_mem_map[] = {
+ {
+ .base = 0x10000000UL,
+ .size = 0x10000000UL,
+ .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+ PTE_BLOCK_NON_SHARE |
+ PTE_BLOCK_PXN | PTE_BLOCK_UXN,
+ }, {
+ .base = 0x40000000UL,
+ .size = 0x80000000UL,
+ .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+ PTE_BLOCK_INNER_SHARE,
+ }, {
+ /* List terminator */
+ .base = 0,
+ .size = 0,
+ .attrs = 0,
+ },
+};
+
+struct mm_region *mem_map = exynos7420_mem_map;
+#endif
diff --git a/arch/arm/mach-exynos/soc.c b/arch/arm/mach-exynos/soc.c
index 737a8dd..f9c7468 100644
--- a/arch/arm/mach-exynos/soc.c
+++ b/arch/arm/mach-exynos/soc.c
@@ -23,3 +23,11 @@
dcache_enable();
}
#endif
+
+#ifdef CONFIG_ARM64
+void lowlevel_init(void)
+{
+ armv8_switch_to_el2();
+ armv8_switch_to_el1();
+}
+#endif