diff options
| author | Thomas Abraham <thomas.ab@samsung.com> | 2016-04-23 22:18:13 +0530 |
|---|---|---|
| committer | Minkyu Kang <mk7.kang@samsung.com> | 2016-05-25 10:00:19 +0900 |
| commit | e39448e8be8389f5ddeabae0ec9c6a3b7b8a2ca6 (patch) | |
| tree | 97b189f0e945f36f5109897e107ed8bccddf440f /arch/arm/mach-exynos | |
| parent | 36aa893775b809ea3b508a225992311582f6379a (diff) | |
| download | u-boot-e39448e8be8389f5ddeabae0ec9c6a3b7b8a2ca6.zip u-boot-e39448e8be8389f5ddeabae0ec9c6a3b7b8a2ca6.tar.gz u-boot-e39448e8be8389f5ddeabae0ec9c6a3b7b8a2ca6.tar.bz2 | |
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>
Diffstat (limited to 'arch/arm/mach-exynos')
| -rw-r--r-- | arch/arm/mach-exynos/Kconfig | 8 | ||||
| -rw-r--r-- | arch/arm/mach-exynos/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-exynos/mmu-arm64.c | 35 | ||||
| -rw-r--r-- | arch/arm/mach-exynos/soc.c | 8 |
4 files changed, 52 insertions, 0 deletions
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 @@ config ARCH_EXYNOS5 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 @@ void enable_caches(void) dcache_enable(); } #endif + +#ifdef CONFIG_ARM64 +void lowlevel_init(void) +{ + armv8_switch_to_el2(); + armv8_switch_to_el1(); +} +#endif |