[PATCH v3 1/1] arm: bcmbca: introduce the bcmbca architecture and 47622 SOC

Philippe REYNES philippe.reynes at softathome.com
Wed May 11 15:52:27 CEST 2022


Hi William,

Le 09/05/2022 à 18:28, William Zhang a écrit :
> This is the initial support for Broadcom's ARM-based 47622 SOC.
>
> In this change, our first SOC is an armv7 platform called 47622. The
> initial support includes a bare-bone implementation and dts with ARM
> PL011 uart.
>
> The SOC-specific code resides in arch/arm/mach-bcmbca/<soc> and board
> related code is in board/broadcom/bcmba.
>
> The u-boot image can be loaded from flash or network to the entry
> point address in the memory and boot from there.
>
> Signed-off-by: William Zhang <william.zhang at broadcom.com>
> Signed-off-by: Kursad Oney <kursad.oney at broadcom.com>
> Signed-off-by: Anand Gore <anand.gore at broadcom.com>


Reviewed-by: Philippe Reynes <philippe.reynes at softathome.com>


>
> ---
>
> Changes in v3:
> - Remove the CONFIG_SYS_BAUDRATE_TABLE to use the u-boot default table
>
> Changes in v2:
> - Updated dts and dtsi files which are accpeted in linux-next upstream
> - Changed CONFIG_SYS_TEXT_BASE to 0x01000000 from 0x10000000 to work
> on boards with 256MB or less memory
>
>   MAINTAINERS                            |  11 +++
>   arch/arm/Kconfig                       |   7 ++
>   arch/arm/Makefile                      |   1 +
>   arch/arm/dts/Makefile                  |   3 +
>   arch/arm/dts/bcm47622.dtsi             | 126 +++++++++++++++++++++++++
>   arch/arm/dts/bcm947622.dts             |  30 ++++++
>   arch/arm/mach-bcmbca/Kconfig           |  17 ++++
>   arch/arm/mach-bcmbca/Makefile          |   6 ++
>   arch/arm/mach-bcmbca/bcm47622/Kconfig  |  17 ++++
>   arch/arm/mach-bcmbca/bcm47622/Makefile |   5 +
>   board/broadcom/bcmbca/Kconfig          |  17 ++++
>   board/broadcom/bcmbca/Makefile         |   5 +
>   board/broadcom/bcmbca/board.c          |  35 +++++++
>   configs/bcm947622_defconfig            |  18 ++++
>   include/configs/bcm947622.h            |  18 ++++
>   15 files changed, 316 insertions(+)
>   create mode 100644 arch/arm/dts/bcm47622.dtsi
>   create mode 100644 arch/arm/dts/bcm947622.dts
>   create mode 100644 arch/arm/mach-bcmbca/Kconfig
>   create mode 100644 arch/arm/mach-bcmbca/Makefile
>   create mode 100644 arch/arm/mach-bcmbca/bcm47622/Kconfig
>   create mode 100644 arch/arm/mach-bcmbca/bcm47622/Makefile
>   create mode 100644 board/broadcom/bcmbca/Kconfig
>   create mode 100644 board/broadcom/bcmbca/Makefile
>   create mode 100644 board/broadcom/bcmbca/board.c
>   create mode 100644 configs/bcm947622_defconfig
>   create mode 100644 include/configs/bcm947622.h
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 56be0bfad00c..96cd85dd1c7a 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -195,6 +195,17 @@ F:	drivers/pinctrl/broadcom/
>   F:	configs/rpi_*
>   T:	git https://source.denx.de/u-boot/custodians/u-boot-arm.git
>   
> +ARM BROADCOM BCMBCA
> +M:	Anand Gore <anand.gore at broadcom.com>
> +M:	William Zhang <william.zhang at broadcom.com>
> +M:	Kursad Oney <kursad.oney at broadcom.com>
> +M:	Joel Peshkin <joel.peshkin at broadcom.com>
> +S:	Maintained
> +F:	arch/arm/mach-bcmbca/
> +F:	board/broadcom/bcmbca/
> +F:	configs/bcm947622_defconfig
> +F:	include/configs/bcm947622.h
> +
>   ARM BROADCOM BCMSTB
>   M:	Thomas Fitzsimmons <fitzsim at fitzsim.org>
>   S:	Maintained
> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> index 57946f61fabe..5e231fc72854 100644
> --- a/arch/arm/Kconfig
> +++ b/arch/arm/Kconfig
> @@ -712,6 +712,11 @@ config ARCH_BCMSTB
>   	  This enables support for Broadcom ARM-based set-top box
>   	  chipsets, including the 7445 family of chips.
>   
> +config ARCH_BCMBCA
> +	bool "Broadcom broadband chip family"
> +	select DM
> +	select OF_CONTROL
> +
>   config TARGET_VEXPRESS_CA9X4
>   	bool "Support vexpress_ca9x4"
>   	select CPU_V7A
> @@ -2175,6 +2180,8 @@ source "arch/arm/mach-at91/Kconfig"
>   
>   source "arch/arm/mach-bcm283x/Kconfig"
>   
> +source "arch/arm/mach-bcmbca/Kconfig"
> +
>   source "arch/arm/mach-bcmstb/Kconfig"
>   
>   source "arch/arm/mach-davinci/Kconfig"
> diff --git a/arch/arm/Makefile b/arch/arm/Makefile
> index ad757e982e37..0fd127e0e7e4 100644
> --- a/arch/arm/Makefile
> +++ b/arch/arm/Makefile
> @@ -59,6 +59,7 @@ machine-$(CONFIG_ARCH_APPLE)		+= apple
>   machine-$(CONFIG_ARCH_ASPEED)		+= aspeed
>   machine-$(CONFIG_ARCH_AT91)		+= at91
>   machine-$(CONFIG_ARCH_BCM283X)		+= bcm283x
> +machine-$(CONFIG_ARCH_BCMBCA)		+= bcmbca
>   machine-$(CONFIG_ARCH_BCMSTB)		+= bcmstb
>   machine-$(CONFIG_ARCH_DAVINCI)		+= davinci
>   machine-$(CONFIG_ARCH_EXYNOS)		+= exynos
> diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
> index ab2d0da192c6..db42475bba1c 100644
> --- a/arch/arm/dts/Makefile
> +++ b/arch/arm/dts/Makefile
> @@ -1132,6 +1132,9 @@ dtb-$(CONFIG_TARGET_BCMNS3) += ns3-board.dtb
>   
>   dtb-$(CONFIG_ARCH_BCMSTB) += bcm7xxx.dtb
>   
> +dtb-$(CONFIG_BCM47622) += \
> +	bcm947622.dtb
> +
>   dtb-$(CONFIG_ASPEED_AST2500) += ast2500-evb.dtb
>   dtb-$(CONFIG_ASPEED_AST2600) += ast2600-evb.dtb
>   
> diff --git a/arch/arm/dts/bcm47622.dtsi b/arch/arm/dts/bcm47622.dtsi
> new file mode 100644
> index 000000000000..c016e12b7372
> --- /dev/null
> +++ b/arch/arm/dts/bcm47622.dtsi
> @@ -0,0 +1,126 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright 2022 Broadcom Ltd.
> + */
> +
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include <dt-bindings/interrupt-controller/irq.h>
> +
> +/ {
> +	compatible = "brcm,bcm47622", "brcm,bcmbca";
> +	#address-cells = <1>;
> +	#size-cells = <1>;
> +
> +	interrupt-parent = <&gic>;
> +
> +	cpus {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		CA7_0: cpu at 0 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a7";
> +			reg = <0x0>;
> +			next-level-cache = <&L2_0>;
> +			enable-method = "psci";
> +		};
> +
> +		CA7_1: cpu at 1 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a7";
> +			reg = <0x1>;
> +			next-level-cache = <&L2_0>;
> +			enable-method = "psci";
> +		};
> +		CA7_2: cpu at 2 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a7";
> +			reg = <0x2>;
> +			next-level-cache = <&L2_0>;
> +			enable-method = "psci";
> +		};
> +		CA7_3: cpu at 3 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a7";
> +			reg = <0x3>;
> +			next-level-cache = <&L2_0>;
> +			enable-method = "psci";
> +		};
> +		L2_0: l2-cache0 {
> +			compatible = "cache";
> +		};
> +	};
> +
> +	timer {
> +		compatible = "arm,armv7-timer";
> +		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
> +			<GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
> +			<GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
> +			<GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
> +		arm,cpu-registers-not-fw-configured;
> +	};
> +
> +	pmu: pmu {
> +		compatible = "arm,cortex-a7-pmu";
> +		interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
> +			<GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>,
> +			<GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>,
> +			<GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
> +		interrupt-affinity = <&CA7_0>, <&CA7_1>,
> +			<&CA7_2>, <&CA7_3>;
> +	};
> +
> +	clocks: clocks {
> +		periph_clk: periph-clk {
> +			compatible = "fixed-clock";
> +			#clock-cells = <0>;
> +			clock-frequency = <200000000>;
> +		};
> +		uart_clk: uart-clk {
> +			compatible = "fixed-factor-clock";
> +			#clock-cells = <0>;
> +			clocks = <&periph_clk>;
> +			clock-div = <4>;
> +			clock-mult = <1>;
> +		};
> +	};
> +
> +	psci {
> +		compatible = "arm,psci-0.2";
> +		method = "smc";
> +		cpu_off = <1>;
> +		cpu_on = <2>;
> +	};
> +
> +	axi at 81000000 {
> +		compatible = "simple-bus";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges = <0 0x81000000 0x818000>;
> +
> +		gic: interrupt-controller at 1000 {
> +			compatible = "arm,cortex-a7-gic";
> +			#interrupt-cells = <3>;
> +			#address-cells = <0>;
> +			interrupt-controller;
> +			reg = <0x1000 0x1000>,
> +				<0x2000 0x2000>;
> +		};
> +	};
> +
> +	bus at ff800000 {
> +		compatible = "simple-bus";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges = <0 0xff800000 0x800000>;
> +
> +		uart0: serial at 12000 {
> +			compatible = "arm,pl011", "arm,primecell";
> +			reg = <0x12000 0x1000>;
> +			interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&uart_clk>, <&uart_clk>;
> +			clock-names = "uartclk", "apb_pclk";
> +			status = "disabled";
> +		};
> +	};
> +};
> diff --git a/arch/arm/dts/bcm947622.dts b/arch/arm/dts/bcm947622.dts
> new file mode 100644
> index 000000000000..6f083724ab8e
> --- /dev/null
> +++ b/arch/arm/dts/bcm947622.dts
> @@ -0,0 +1,30 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright 2019 Broadcom Ltd.
> + */
> +
> +/dts-v1/;
> +
> +#include "bcm47622.dtsi"
> +
> +/ {
> +	model = "Broadcom BCM947622 Reference Board";
> +	compatible = "brcm,bcm947622", "brcm,bcm47622", "brcm,bcmbca";
> +
> +	aliases {
> +		serial0 = &uart0;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +
> +	memory at 0 {
> +		device_type = "memory";
> +		reg = <0x0 0x08000000>;
> +	};
> +};
> +
> +&uart0 {
> +	status = "okay";
> +};
> diff --git a/arch/arm/mach-bcmbca/Kconfig b/arch/arm/mach-bcmbca/Kconfig
> new file mode 100644
> index 000000000000..2d49380f879b
> --- /dev/null
> +++ b/arch/arm/mach-bcmbca/Kconfig
> @@ -0,0 +1,17 @@
> +# SPDX-License-Identifier: GPL-2.0+
> +#
> +# (C) Copyright 2022 Broadcom Ltd
> +#
> +
> +if ARCH_BCMBCA
> +
> +config BCM47622
> +	bool "Support for Broadcom 47622 Family"
> +	select SYS_ARCH_TIMER
> +	select CPU_V7A
> +	select DM_SERIAL
> +	select PL01X_SERIAL
> +
> +endif
> +
> +source "arch/arm/mach-bcmbca/bcm47622/Kconfig"
> diff --git a/arch/arm/mach-bcmbca/Makefile b/arch/arm/mach-bcmbca/Makefile
> new file mode 100644
> index 000000000000..072d4ea7b5e6
> --- /dev/null
> +++ b/arch/arm/mach-bcmbca/Makefile
> @@ -0,0 +1,6 @@
> +# SPDX-License-Identifier: GPL-2.0+
> +#
> +# (C) Copyright 2022 Broadcom Ltd
> +#
> +
> +obj-$(CONFIG_BCM47622) += bcm47622/
> diff --git a/arch/arm/mach-bcmbca/bcm47622/Kconfig b/arch/arm/mach-bcmbca/bcm47622/Kconfig
> new file mode 100644
> index 000000000000..bce30892e35d
> --- /dev/null
> +++ b/arch/arm/mach-bcmbca/bcm47622/Kconfig
> @@ -0,0 +1,17 @@
> +# SPDX-License-Identifier: GPL-2.0+
> +#
> +# (C) Copyright 2022 Broadcom Ltd
> +#
> +
> +if BCM47622
> +
> +config TARGET_BCM947622
> +	bool "Broadcom 47622 Reference Board"
> +	depends on ARCH_BCMBCA
> +
> +config SYS_SOC
> +	default "bcm47622"
> +
> +source "board/broadcom/bcmbca/Kconfig"
> +
> +endif
> diff --git a/arch/arm/mach-bcmbca/bcm47622/Makefile b/arch/arm/mach-bcmbca/bcm47622/Makefile
> new file mode 100644
> index 000000000000..beb979af7520
> --- /dev/null
> +++ b/arch/arm/mach-bcmbca/bcm47622/Makefile
> @@ -0,0 +1,5 @@
> +# SPDX-License-Identifier: GPL-2.0+
> +#
> +# (C) Copyright 2022 Broadcom Ltd
> +#
> +obj- += dummy.o
> diff --git a/board/broadcom/bcmbca/Kconfig b/board/broadcom/bcmbca/Kconfig
> new file mode 100644
> index 000000000000..63d4252da620
> --- /dev/null
> +++ b/board/broadcom/bcmbca/Kconfig
> @@ -0,0 +1,17 @@
> +# SPDX-License-Identifier: GPL-2.0+
> +#
> +# (C) Copyright 2022 Broadcom Ltd
> +#
> +
> +config SYS_BOARD
> +	default "bcmbca"
> +
> +config SYS_VENDOR
> +	default "broadcom"
> +
> +if TARGET_BCM947622
> +
> +config SYS_CONFIG_NAME
> +	default "bcm947622"
> +
> +endif
> diff --git a/board/broadcom/bcmbca/Makefile b/board/broadcom/bcmbca/Makefile
> new file mode 100644
> index 000000000000..8f06c3111b9b
> --- /dev/null
> +++ b/board/broadcom/bcmbca/Makefile
> @@ -0,0 +1,5 @@
> +# SPDX-License-Identifier: GPL-2.0+
> +#
> +# (C) Copyright 2022 Broadcom Ltd
> +
> +obj-y	+= board.o
> diff --git a/board/broadcom/bcmbca/board.c b/board/broadcom/bcmbca/board.c
> new file mode 100644
> index 000000000000..4aa1d659d5c7
> --- /dev/null
> +++ b/board/broadcom/bcmbca/board.c
> @@ -0,0 +1,35 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * (C) Copyright 2022 Broadcom Ltd.
> + */
> +
> +#include <common.h>
> +#include <fdtdec.h>
> +
> +int board_init(void)
> +{
> +	return 0;
> +}
> +
> +int dram_init(void)
> +{
> +	if (fdtdec_setup_mem_size_base() != 0)
> +		puts("fdtdec_setup_mem_size_base() has failed\n");
> +
> +	return 0;
> +}
> +
> +int dram_init_banksize(void)
> +{
> +	fdtdec_setup_memory_banksize();
> +	return 0;
> +}
> +
> +int print_cpuinfo(void)
> +{
> +	return 0;
> +}
> +
> +void reset_cpu(ulong addr)
> +{
> +}
> diff --git a/configs/bcm947622_defconfig b/configs/bcm947622_defconfig
> new file mode 100644
> index 000000000000..2cb17fb0ac2c
> --- /dev/null
> +++ b/configs/bcm947622_defconfig
> @@ -0,0 +1,18 @@
> +CONFIG_ARM=y
> +CONFIG_ARCH_BCMBCA=y
> +CONFIG_SYS_TEXT_BASE=0x01000000
> +CONFIG_SYS_MALLOC_LEN=0x2000000
> +CONFIG_SYS_MALLOC_F_LEN=0x8000
> +CONFIG_BCM47622=y
> +CONFIG_TARGET_BCM947622=y
> +CONFIG_NR_DRAM_BANKS=1
> +CONFIG_DEFAULT_DEVICE_TREE="bcm947622"
> +CONFIG_IDENT_STRING=" Broadcom BCM47622"
> +CONFIG_ENV_VARS_UBOOT_CONFIG=y
> +CONFIG_SYS_LOAD_ADDR=0x01000000
> +CONFIG_OF_STDOUT_VIA_ALIAS=y
> +CONFIG_DISPLAY_BOARDINFO_LATE=y
> +CONFIG_HUSH_PARSER=y
> +CONFIG_CMD_CACHE=y
> +CONFIG_OF_EMBED=y
> +CONFIG_CLK=y
> diff --git a/include/configs/bcm947622.h b/include/configs/bcm947622.h
> new file mode 100644
> index 000000000000..baa005aed215
> --- /dev/null
> +++ b/include/configs/bcm947622.h
> @@ -0,0 +1,18 @@
> +/* SPDX-License-Identifier: GPL-2.0+ */
> +/*
> + * (C) Copyright 2022 Broadcom Ltd.
> + */
> +
> +#ifndef __BCM947622_H
> +#define __BCM947622_H
> +#include <linux/sizes.h>
> +
> +#define CONFIG_SYS_MAXARGS		64
> +#define CONFIG_SYS_BOOTM_LEN		(32 * 1024 * 1024)
> +
> +#define CONFIG_SYS_SDRAM_BASE		0x00000000
> +
> +#define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_TEXT_BASE + SZ_16M)
> +
> +#define COUNTER_FREQUENCY		50000000
> +#endif


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