[U-Boot] [PATCH 8/9] ARM: Exynos: Add minimal support for ARM 64bit based Exynos5433 SoC

[Lukasz Majewski <lukma@denx.de>]

On Wed, 07 Nov 2018 16:04:59 +0100
Marek Szyprowski <m.szyprowski@samsung.com> wrote:

> This patch adds minimal support for Exynos5433 SoC (ARM64 based).
> 
> The following devices are supported:
> - mmc0 (for eMMC)
> - serial1 (for debug/console)
> - gpa0..3 and gpb0..2 GPIO banks
> 
> Based on earlier work done by Lukasz Majewski
> <l.majewski@samsung.com>.
> 
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
> ---
>  arch/arm/cpu/armv8/Kconfig       |  2 +-
>  arch/arm/dts/exynos5433.dtsi     | 84
> ++++++++++++++++++++++++++++++++ arch/arm/mach-exynos/Kconfig     |
> 7 +++ arch/arm/mach-exynos/mmu-arm64.c | 24 +++++++++
>  arch/arm/mach-exynos/soc.c       |  3 ++
>  drivers/gpio/s5p_gpio.c          |  1 +
>  scripts/config_whitelist.txt     |  1 +
>  7 files changed, 121 insertions(+), 1 deletion(-)
>  create mode 100644 arch/arm/dts/exynos5433.dtsi
> 
> diff --git a/arch/arm/cpu/armv8/Kconfig b/arch/arm/cpu/armv8/Kconfig
> index c8bebabdf6..295cdd4653 100644
> --- a/arch/arm/cpu/armv8/Kconfig
> +++ b/arch/arm/cpu/armv8/Kconfig
> @@ -96,7 +96,7 @@ endmenu
>  config PSCI_RESET
>  	bool "Use PSCI for reset and shutdown"
>  	default y
> -	depends on !ARCH_EXYNOS7 && !ARCH_BCM283X && \
> +	depends on !ARCH_EXYNOS5433 && !ARCH_EXYNOS7
> && !ARCH_BCM283X && \ !TARGET_LS2080A_SIMU && !TARGET_LS2080AQDS && \
>  		   !TARGET_LS2080ARDB && !TARGET_LS2080A_EMU && \
>  		   !TARGET_LS1088ARDB && !TARGET_LS1088AQDS && \
> diff --git a/arch/arm/dts/exynos5433.dtsi
> b/arch/arm/dts/exynos5433.dtsi new file mode 100644
> index 0000000000..509b39a95f
> --- /dev/null
> +++ b/arch/arm/dts/exynos5433.dtsi
> @@ -0,0 +1,84 @@
> +/*
> + * SAMSUNG EXYNOS5433 SoC device tree source
> + *
> + * Copyright (c) 2018 Samsung Electronics Co., Ltd.
> + *		http://www.samsung.com
> + *
> + * SPDX-License-Identifier:	GPL-2.0+

Has this file been took from the Linux kernel?

If yes, please provide SHA1 from master (in the commit message).

> + */
> +
> +/dts-v1/;
> +#include "skeleton.dtsi"
> +
> +/ {
> +	mmc_0: mmc at 15540000 {
> +		compatible = "samsung,exynos-dwmmc";
> +		reg = <0x0 0x15540000 0x0 0x1000>;
> +		samsung,bus-width = <8>;
> +		samsung,timing = <1 3 3>;
> +		samsung,removable = <0>;
> +		samsung,pre-init;
> +		fifoth_val = <0x201f0020>;
> +		status = "disabled";
> +	};
> +
> +	pinctrl_alive: pinctrl at 10580000 {
> +		compatible = "samsung,exynos5433-pinctrl";
> +		reg = <0x10580000 0x1a20>, <0x11090000 0x100>;
> +		/* gpa0..3, gpf1..5 */
> +
> +		gpa0: gpa0 {
> +			gpio-controller;
> +			#gpio-cells = <2>;
> +		};
> +
> +		gpa1: gpa1 {
> +			gpio-controller;
> +			#gpio-cells = <2>;
> +		};
> +
> +		gpa2: gpa2 {
> +			gpio-controller;
> +			#gpio-cells = <2>;
> +		};
> +
> +		gpa3: gpa3 {
> +			gpio-controller;
> +			#gpio-cells = <2>;
> +
> +		};
> +	};
> +
> +	pinctrl_peric: pinctrl at 14cc0000 {
> +		compatible = "samsung,exynos5433-pinctrl";
> +		reg = <0x14cc0000 0x1100>;
> +		/* gpv7, gpb0, gpc0..3, gpg0, gpd0..4,6,8,7, gpg1..3
> */ +
> +		gpv7: gpv7 {
> +			gpio-controller;
> +			#gpio-cells = <2>;
> +		};
> +
> +		gpb0: gpb0 {
> +			gpio-controller;
> +			#gpio-cells = <2>;
> +		};
> +
> +		gpb1: gpb1 {
> +			gpio-controller;
> +			#gpio-cells = <2>;
> +		};
> +
> +		gpb2: gpb2 {
> +			gpio-controller;
> +			#gpio-cells = <2>;
> +		};
> +	};
> +
> +	serial_1: serial at 14c20000 {
> +		compatible = "samsung,exynos4210-uart";
> +		reg = <0x14c20000 0x100>;
> +		id = <1>;
> +		status = "disabled";
> +	};
> +};
> diff --git a/arch/arm/mach-exynos/Kconfig
> b/arch/arm/mach-exynos/Kconfig index ed04369cfa..4a49c8dcc2 100644
> --- a/arch/arm/mach-exynos/Kconfig
> +++ b/arch/arm/mach-exynos/Kconfig
> @@ -29,6 +29,13 @@ config ARCH_EXYNOS5
>  	  Cortex-A7 CPU in big.LITTLE configuration). There are
> multiple SoCs in this family including Exynos5250, Exynos5420 and
> Exynos5800. 
> +config ARCH_EXYNOS5433
> +	bool "Exynos5433 SoC family"
> +	select ARM64
> +	help
> +	  Samsung Exynos5433 SoC family are based on ARM Cortex-A57
> CPU and
> +	  Cortex-A53 CPU (in a big.LITTLE configuration).
> +
>  config ARCH_EXYNOS7
>  	bool "Exynos7 SoC family"
>  	select ARM64
> diff --git a/arch/arm/mach-exynos/mmu-arm64.c
> b/arch/arm/mach-exynos/mmu-arm64.c index 46b8169d19..a857a7318e 100644
> --- a/arch/arm/mach-exynos/mmu-arm64.c
> +++ b/arch/arm/mach-exynos/mmu-arm64.c
> @@ -29,3 +29,27 @@ static struct mm_region exynos7420_mem_map[] = {
>  
>  struct mm_region *mem_map = exynos7420_mem_map;
>  #endif
> +
> +#ifdef CONFIG_EXYNOS5433
> +static struct mm_region exynos5433_mem_map[] = {
> +	{
> +		.virt = 0x00000000UL,
> +		.phys = 0x00000000UL,
> +		.size = 0x20000000UL,
> +		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
> +			 PTE_BLOCK_NON_SHARE |
> +			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
> +	}, {
> +		.virt = 0x20000000UL,
> +		.phys = 0x20000000UL,
> +		.size = 0xC0000000UL,
> +		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
> +			 PTE_BLOCK_INNER_SHARE
> +	}, {
> +		/* List terminator */
> +		0,
> +	}
> +};
> +
> +struct mm_region *mem_map = exynos5433_mem_map;
> +#endif
> diff --git a/arch/arm/mach-exynos/soc.c b/arch/arm/mach-exynos/soc.c
> index 589e16c5ad..215cbb8f70 100644
> --- a/arch/arm/mach-exynos/soc.c
> +++ b/arch/arm/mach-exynos/soc.c
> @@ -23,6 +23,9 @@ void reset_cpu(ulong addr)
>  #ifdef CONFIG_CPU_V7A
>  	writel(0x1, samsung_get_base_swreset());
>  #endif
> +#ifdef CONFIG_ARCH_EXYNOS5433
> +	writel(0x1, (void *)0x105C0400);

Please provide either #define for it or explain this magic value in
a (verbose) comment.

> +#endif
>  }
>  
>  #ifndef CONFIG_SYS_DCACHE_OFF
> diff --git a/drivers/gpio/s5p_gpio.c b/drivers/gpio/s5p_gpio.c
> index e4b5383d0f..fcaad1c4a6 100644
> --- a/drivers/gpio/s5p_gpio.c
> +++ b/drivers/gpio/s5p_gpio.c
> @@ -357,6 +357,7 @@ static const struct udevice_id exynos_gpio_ids[]
> = { { .compatible = "samsung,exynos4x12-pinctrl" },
>  	{ .compatible = "samsung,exynos5250-pinctrl" },
>  	{ .compatible = "samsung,exynos5420-pinctrl" },
> +	{ .compatible = "samsung,exynos5433-pinctrl" },
>  	{ }
>  };
>  
> diff --git a/scripts/config_whitelist.txt
> b/scripts/config_whitelist.txt index 94c0f1ff82..6438686fc4 100644
> --- a/scripts/config_whitelist.txt
> +++ b/scripts/config_whitelist.txt
> @@ -571,6 +571,7 @@ CONFIG_EXYNOS4210
>  CONFIG_EXYNOS5
>  CONFIG_EXYNOS5250
>  CONFIG_EXYNOS5420
> +CONFIG_EXYNOS5433

The config_writelist.txt is to prevent from adding new CONFIG_* options
to include/configs/<myboard>.h

The CONFIG_EXYNOS5433 shall be added to a proper Kconfig

>  CONFIG_EXYNOS5_DT
>  CONFIG_EXYNOS7420
>  CONFIG_EXYNOS_ACE_SHA




Best regards,

Lukasz Majewski

--

DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lukma at denx.de
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