diff mbox series

[v2,1/3] arm: bcmbca: add bcm6856 SoC support under CONFIG_ARCH_BCMBCA

Message ID 20220815113359.v2.1.I7c470cdf7582d7ef7676b1888e97a3ceeb91a7c4@changeid
State Superseded
Delegated to: Tom Rini
Headers show
Series arm: bcmbca: move bcm68360 support under CONFIG_ARCH_BCMBCA | expand

Commit Message

William Zhang Aug. 15, 2022, 6:55 p.m. UTC
BCM6856 is a Broadcom B53 based PON Gateway SoC. It is part of the BCA
(Broadband Carrier Access origin) chipset family. Like other Broadband
SoC, this patch adds it under CONFIG_BCM6856 chip config and
CONFIG_ARCH_BCMBCA platform config.

This initial support includes a bare-bone implementation and dts with
CPU subsystem, memory and Broadcom uart. This SoC is supported in the
linux-next git repository so the dts and dtsi files are copied from
linux.

The u-boot image can be loaded from flash or network to the entry point
address in the memory and boot from there to the console.

Signed-off-by: William Zhang <william.zhang@broadcom.com>
---

(no changes since v1)

 MAINTAINERS                              |   1 +
 arch/arm/dts/Makefile                    |   2 +
 arch/arm/dts/bcm6856.dtsi                | 103 +++++++++++++++++++++++
 arch/arm/dts/bcm96856.dts                |  30 +++++++
 arch/arm/mach-bcmbca/Kconfig             |   8 ++
 arch/arm/mach-bcmbca/Makefile            |   1 +
 arch/arm/mach-bcmbca/bcm6856/Kconfig     |  17 ++++
 arch/arm/mach-bcmbca/bcm6856/Makefile    |   5 ++
 arch/arm/mach-bcmbca/bcm6856/mmu_table.c |  32 +++++++
 board/broadcom/bcmbca/Kconfig            |   7 ++
 configs/bcm96856_defconfig               |  23 +++++
 include/configs/bcm96856.h               |  11 +++
 12 files changed, 240 insertions(+)
 create mode 100644 arch/arm/dts/bcm6856.dtsi
 create mode 100644 arch/arm/dts/bcm96856.dts
 create mode 100644 arch/arm/mach-bcmbca/bcm6856/Kconfig
 create mode 100644 arch/arm/mach-bcmbca/bcm6856/Makefile
 create mode 100644 arch/arm/mach-bcmbca/bcm6856/mmu_table.c
 create mode 100644 configs/bcm96856_defconfig
 create mode 100644 include/configs/bcm96856.h

Comments

Philippe REYNES Aug. 24, 2022, 12:23 p.m. UTC | #1
Hi William,


Le 15/08/2022 à 20:55, William Zhang a écrit :
> BCM6856 is a Broadcom B53 based PON Gateway SoC. It is part of the BCA
> (Broadband Carrier Access origin) chipset family. Like other Broadband
> SoC, this patch adds it under CONFIG_BCM6856 chip config and
> CONFIG_ARCH_BCMBCA platform config.
>
> This initial support includes a bare-bone implementation and dts with
> CPU subsystem, memory and Broadcom uart. This SoC is supported in the
> linux-next git repository so the dts and dtsi files are copied from
> linux.
>
> The u-boot image can be loaded from flash or network to the entry point
> address in the memory and boot from there to the console.
>
> Signed-off-by: William Zhang <william.zhang@broadcom.com>


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


> ---
>
> (no changes since v1)
>
>   MAINTAINERS                              |   1 +
>   arch/arm/dts/Makefile                    |   2 +
>   arch/arm/dts/bcm6856.dtsi                | 103 +++++++++++++++++++++++
>   arch/arm/dts/bcm96856.dts                |  30 +++++++
>   arch/arm/mach-bcmbca/Kconfig             |   8 ++
>   arch/arm/mach-bcmbca/Makefile            |   1 +
>   arch/arm/mach-bcmbca/bcm6856/Kconfig     |  17 ++++
>   arch/arm/mach-bcmbca/bcm6856/Makefile    |   5 ++
>   arch/arm/mach-bcmbca/bcm6856/mmu_table.c |  32 +++++++
>   board/broadcom/bcmbca/Kconfig            |   7 ++
>   configs/bcm96856_defconfig               |  23 +++++
>   include/configs/bcm96856.h               |  11 +++
>   12 files changed, 240 insertions(+)
>   create mode 100644 arch/arm/dts/bcm6856.dtsi
>   create mode 100644 arch/arm/dts/bcm96856.dts
>   create mode 100644 arch/arm/mach-bcmbca/bcm6856/Kconfig
>   create mode 100644 arch/arm/mach-bcmbca/bcm6856/Makefile
>   create mode 100644 arch/arm/mach-bcmbca/bcm6856/mmu_table.c
>   create mode 100644 configs/bcm96856_defconfig
>   create mode 100644 include/configs/bcm96856.h
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index d0a5b2352cc8..1f50dad583ce 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -230,6 +230,7 @@ N:	bcm[9]?63178
>   N:	bcm[9]?6756
>   N:	bcm[9]?6813
>   N:	bcm[9]?6846
> +N:	bcm[9]?6856
>   N:	bcm[9]?6878
>   
>   ARM BROADCOM BCMSTB
> diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
> index c55bc3569662..a32bdf8c9f17 100644
> --- a/arch/arm/dts/Makefile
> +++ b/arch/arm/dts/Makefile
> @@ -1182,6 +1182,8 @@ dtb-$(CONFIG_BCM6813) += \
>   	bcm96813.dtb
>   dtb-$(CONFIG_BCM6846) += \
>   	bcm96846.dtb
> +dtb-$(CONFIG_BCM6856) += \
> +	bcm96856.dtb
>   dtb-$(CONFIG_BCM6878) += \
>   	bcm96878.dtb
>   
> diff --git a/arch/arm/dts/bcm6856.dtsi b/arch/arm/dts/bcm6856.dtsi
> new file mode 100644
> index 000000000000..0bce6497219f
> --- /dev/null
> +++ b/arch/arm/dts/bcm6856.dtsi
> @@ -0,0 +1,103 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright 2022 Broadcom Ltd.
> + */
> +
> +#include <dt-bindings/interrupt-controller/irq.h>
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> +/ {
> +	compatible = "brcm,bcm6856", "brcm,bcmbca";
> +	#address-cells = <2>;
> +	#size-cells = <2>;
> +
> +	interrupt-parent = <&gic>;
> +
> +	cpus {
> +		#address-cells = <2>;
> +		#size-cells = <0>;
> +
> +		B53_0: cpu@0 {
> +			compatible = "brcm,brahma-b53";
> +			device_type = "cpu";
> +			reg = <0x0 0x0>;
> +			next-level-cache = <&L2_0>;
> +			enable-method = "psci";
> +		};
> +
> +		B53_1: cpu@1 {
> +			compatible = "brcm,brahma-b53";
> +			device_type = "cpu";
> +			reg = <0x0 0x1>;
> +			next-level-cache = <&L2_0>;
> +			enable-method = "psci";
> +		};
> +
> +		L2_0: l2-cache0 {
> +			compatible = "cache";
> +		};
> +	};
> +
> +	timer {
> +		compatible = "arm,armv8-timer";
> +		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>,
> +			<GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>,
> +			<GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>,
> +			<GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>;
> +	};
> +
> +	pmu: pmu {
> +		compatible = "arm,cortex-a53-pmu";
> +		interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>,
> +			<GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
> +		interrupt-affinity = <&B53_0>, <&B53_1>;
> +	};
> +
> +	clocks: clocks {
> +		periph_clk:periph-clk {
> +			compatible = "fixed-clock";
> +			#clock-cells = <0>;
> +			clock-frequency = <200000000>;
> +		};
> +	};
> +
> +	psci {
> +		compatible = "arm,psci-0.2";
> +		method = "smc";
> +	};
> +
> +	axi@81000000 {
> +		compatible = "simple-bus";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges = <0x0 0x0 0x81000000 0x8000>;
> +
> +		gic: interrupt-controller@1000 {
> +			compatible = "arm,gic-400";
> +			#interrupt-cells = <3>;
> +			interrupt-controller;
> +			reg = <0x1000 0x1000>, /* GICD */
> +				<0x2000 0x2000>, /* GICC */
> +				<0x4000 0x2000>, /* GICH */
> +				<0x6000 0x2000>; /* GICV */
> +			interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(2) |
> +					IRQ_TYPE_LEVEL_HIGH)>;
> +		};
> +	};
> +
> +	bus@ff800000 {
> +		compatible = "simple-bus";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges = <0x0 0x0 0xff800000 0x800000>;
> +
> +		uart0: serial@640 {
> +			compatible = "brcm,bcm6345-uart";
> +			reg = <0x640 0x18>;
> +			interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&periph_clk>;
> +			clock-names = "refclk";
> +			status = "disabled";
> +		};
> +	};
> +};
> diff --git a/arch/arm/dts/bcm96856.dts b/arch/arm/dts/bcm96856.dts
> new file mode 100644
> index 000000000000..032aeb75c983
> --- /dev/null
> +++ b/arch/arm/dts/bcm96856.dts
> @@ -0,0 +1,30 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright 2022 Broadcom Ltd.
> + */
> +
> +/dts-v1/;
> +
> +#include "bcm6856.dtsi"
> +
> +/ {
> +	model = "Broadcom BCM96856 Reference Board";
> +	compatible = "brcm,bcm96856", "brcm,bcm6856", "brcm,bcmbca";
> +
> +	aliases {
> +		serial0 = &uart0;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +
> +	memory@0 {
> +		device_type = "memory";
> +		reg = <0x0 0x0 0x0 0x08000000>;
> +	};
> +};
> +
> +&uart0 {
> +	status = "okay";
> +};
> diff --git a/arch/arm/mach-bcmbca/Kconfig b/arch/arm/mach-bcmbca/Kconfig
> index d78618820b58..5dd566a98d32 100644
> --- a/arch/arm/mach-bcmbca/Kconfig
> +++ b/arch/arm/mach-bcmbca/Kconfig
> @@ -83,6 +83,13 @@ config BCM6846
>   	select DM_SERIAL
>   	select BCM6345_SERIAL
>   
> +config BCM6856
> +	bool "Support for Broadcom 6856 Family"
> +	select ARM64
> +	select SYS_ARCH_TIMER
> +	select DM_SERIAL
> +	select BCM6345_SERIAL
> +
>   config BCM6878
>   	bool "Support for Broadcom 6878 Family"
>   	select SYS_ARCH_TIMER
> @@ -101,6 +108,7 @@ source "arch/arm/mach-bcmbca/bcm63178/Kconfig"
>   source "arch/arm/mach-bcmbca/bcm6756/Kconfig"
>   source "arch/arm/mach-bcmbca/bcm6813/Kconfig"
>   source "arch/arm/mach-bcmbca/bcm6846/Kconfig"
> +source "arch/arm/mach-bcmbca/bcm6856/Kconfig"
>   source "arch/arm/mach-bcmbca/bcm6878/Kconfig"
>   
>   endif
> diff --git a/arch/arm/mach-bcmbca/Makefile b/arch/arm/mach-bcmbca/Makefile
> index e5df60e7648b..20f827512005 100644
> --- a/arch/arm/mach-bcmbca/Makefile
> +++ b/arch/arm/mach-bcmbca/Makefile
> @@ -14,4 +14,5 @@ obj-$(CONFIG_BCM63178) += bcm63178/
>   obj-$(CONFIG_BCM6756) += bcm6756/
>   obj-$(CONFIG_BCM6813) += bcm6813/
>   obj-$(CONFIG_BCM6846) += bcm6846/
> +obj-$(CONFIG_BCM6856) += bcm6856/
>   obj-$(CONFIG_BCM6878) += bcm6878/
> diff --git a/arch/arm/mach-bcmbca/bcm6856/Kconfig b/arch/arm/mach-bcmbca/bcm6856/Kconfig
> new file mode 100644
> index 000000000000..6ac75cb84095
> --- /dev/null
> +++ b/arch/arm/mach-bcmbca/bcm6856/Kconfig
> @@ -0,0 +1,17 @@
> +# SPDX-License-Identifier: GPL-2.0+
> +#
> +# (C) Copyright 2022 Broadcom Ltd
> +#
> +
> +if BCM6856
> +
> +config TARGET_BCM96856
> +	bool "Broadcom 6856 Reference Board"
> +	depends on ARCH_BCMBCA
> +
> +config SYS_SOC
> +	default "bcm6856"
> +
> +source "board/broadcom/bcmbca/Kconfig"
> +
> +endif
> diff --git a/arch/arm/mach-bcmbca/bcm6856/Makefile b/arch/arm/mach-bcmbca/bcm6856/Makefile
> new file mode 100644
> index 000000000000..62624977034b
> --- /dev/null
> +++ b/arch/arm/mach-bcmbca/bcm6856/Makefile
> @@ -0,0 +1,5 @@
> +# SPDX-License-Identifier: GPL-2.0+
> +#
> +# (C) Copyright 2022 Broadcom Ltd
> +#
> +obj-y += mmu_table.o
> diff --git a/arch/arm/mach-bcmbca/bcm6856/mmu_table.c b/arch/arm/mach-bcmbca/bcm6856/mmu_table.c
> new file mode 100644
> index 000000000000..8e53b4929eb8
> --- /dev/null
> +++ b/arch/arm/mach-bcmbca/bcm6856/mmu_table.c
> @@ -0,0 +1,32 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + *  Copyright 2022 Broadcom Ltd.
> + */
> +#include <common.h>
> +#include <asm/armv8/mmu.h>
> +#include <linux/sizes.h>
> +
> +static struct mm_region bcm96856_mem_map[] = {
> +		{
> +				.virt = 0x00000000UL,
> +				.phys = 0x00000000UL,
> +				.size = 1UL * SZ_1G,
> +				.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
> +						PTE_BLOCK_INNER_SHARE
> +		},
> +		{
> +				/* SoC peripheral */
> +				.virt = 0xff800000UL,
> +				.phys = 0xff800000UL,
> +				.size = 0x100000,
> +				.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
> +						PTE_BLOCK_NON_SHARE |
> +						PTE_BLOCK_PXN | PTE_BLOCK_UXN
> +		},
> +		{
> +				/* List terminator */
> +				0,
> +		}
> +};
> +
> +struct mm_region *mem_map = bcm96856_mem_map;
> diff --git a/board/broadcom/bcmbca/Kconfig b/board/broadcom/bcmbca/Kconfig
> index 13815fd7975f..efe504919a0f 100644
> --- a/board/broadcom/bcmbca/Kconfig
> +++ b/board/broadcom/bcmbca/Kconfig
> @@ -86,6 +86,13 @@ config SYS_CONFIG_NAME
>   
>   endif
>   
> +if TARGET_BCM96856
> +
> +config SYS_CONFIG_NAME
> +	default "bcm96856"
> +
> +endif
> +
>   if TARGET_BCM96878
>   
>   config SYS_CONFIG_NAME
> diff --git a/configs/bcm96856_defconfig b/configs/bcm96856_defconfig
> new file mode 100644
> index 000000000000..7e1c09769f70
> --- /dev/null
> +++ b/configs/bcm96856_defconfig
> @@ -0,0 +1,23 @@
> +CONFIG_ARM=y
> +CONFIG_COUNTER_FREQUENCY=50000000
> +CONFIG_ARCH_BCMBCA=y
> +CONFIG_SYS_TEXT_BASE=0x01000000
> +CONFIG_SYS_MALLOC_LEN=0x2000000
> +CONFIG_SYS_MALLOC_F_LEN=0x8000
> +CONFIG_BCM6856=y
> +CONFIG_TARGET_BCM96856=y
> +CONFIG_NR_DRAM_BANKS=2
> +CONFIG_DEFAULT_DEVICE_TREE="bcm96856"
> +CONFIG_IDENT_STRING=" Broadcom BCM6856"
> +CONFIG_SYS_LOAD_ADDR=0x01000000
> +CONFIG_ENV_VARS_UBOOT_CONFIG=y
> +CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
> +CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x2000000
> +CONFIG_OF_STDOUT_VIA_ALIAS=y
> +CONFIG_DISPLAY_BOARDINFO_LATE=y
> +CONFIG_HUSH_PARSER=y
> +CONFIG_SYS_MAXARGS=64
> +CONFIG_SYS_BOOTM_LEN=0x4000000
> +CONFIG_CMD_CACHE=y
> +CONFIG_OF_EMBED=y
> +CONFIG_CLK=y
> diff --git a/include/configs/bcm96856.h b/include/configs/bcm96856.h
> new file mode 100644
> index 000000000000..a7ae71eeaafe
> --- /dev/null
> +++ b/include/configs/bcm96856.h
> @@ -0,0 +1,11 @@
> +/* SPDX-License-Identifier: GPL-2.0+ */
> +/*
> + * (C) Copyright 2022 Broadcom Ltd.
> + */
> +
> +#ifndef __BCM96856_H
> +#define __BCM96856_H
> +
> +#define CONFIG_SYS_SDRAM_BASE		0x00000000
> +
> +#endif
diff mbox series

Patch

diff --git a/MAINTAINERS b/MAINTAINERS
index d0a5b2352cc8..1f50dad583ce 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -230,6 +230,7 @@  N:	bcm[9]?63178
 N:	bcm[9]?6756
 N:	bcm[9]?6813
 N:	bcm[9]?6846
+N:	bcm[9]?6856
 N:	bcm[9]?6878
 
 ARM BROADCOM BCMSTB
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index c55bc3569662..a32bdf8c9f17 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -1182,6 +1182,8 @@  dtb-$(CONFIG_BCM6813) += \
 	bcm96813.dtb
 dtb-$(CONFIG_BCM6846) += \
 	bcm96846.dtb
+dtb-$(CONFIG_BCM6856) += \
+	bcm96856.dtb
 dtb-$(CONFIG_BCM6878) += \
 	bcm96878.dtb
 
diff --git a/arch/arm/dts/bcm6856.dtsi b/arch/arm/dts/bcm6856.dtsi
new file mode 100644
index 000000000000..0bce6497219f
--- /dev/null
+++ b/arch/arm/dts/bcm6856.dtsi
@@ -0,0 +1,103 @@ 
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2022 Broadcom Ltd.
+ */
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	compatible = "brcm,bcm6856", "brcm,bcmbca";
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	interrupt-parent = <&gic>;
+
+	cpus {
+		#address-cells = <2>;
+		#size-cells = <0>;
+
+		B53_0: cpu@0 {
+			compatible = "brcm,brahma-b53";
+			device_type = "cpu";
+			reg = <0x0 0x0>;
+			next-level-cache = <&L2_0>;
+			enable-method = "psci";
+		};
+
+		B53_1: cpu@1 {
+			compatible = "brcm,brahma-b53";
+			device_type = "cpu";
+			reg = <0x0 0x1>;
+			next-level-cache = <&L2_0>;
+			enable-method = "psci";
+		};
+
+		L2_0: l2-cache0 {
+			compatible = "cache";
+		};
+	};
+
+	timer {
+		compatible = "arm,armv8-timer";
+		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>,
+			<GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>,
+			<GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>,
+			<GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>;
+	};
+
+	pmu: pmu {
+		compatible = "arm,cortex-a53-pmu";
+		interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>,
+			<GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-affinity = <&B53_0>, <&B53_1>;
+	};
+
+	clocks: clocks {
+		periph_clk:periph-clk {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <200000000>;
+		};
+	};
+
+	psci {
+		compatible = "arm,psci-0.2";
+		method = "smc";
+	};
+
+	axi@81000000 {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x0 0x0 0x81000000 0x8000>;
+
+		gic: interrupt-controller@1000 {
+			compatible = "arm,gic-400";
+			#interrupt-cells = <3>;
+			interrupt-controller;
+			reg = <0x1000 0x1000>, /* GICD */
+				<0x2000 0x2000>, /* GICC */
+				<0x4000 0x2000>, /* GICH */
+				<0x6000 0x2000>; /* GICV */
+			interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(2) |
+					IRQ_TYPE_LEVEL_HIGH)>;
+		};
+	};
+
+	bus@ff800000 {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x0 0x0 0xff800000 0x800000>;
+
+		uart0: serial@640 {
+			compatible = "brcm,bcm6345-uart";
+			reg = <0x640 0x18>;
+			interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&periph_clk>;
+			clock-names = "refclk";
+			status = "disabled";
+		};
+	};
+};
diff --git a/arch/arm/dts/bcm96856.dts b/arch/arm/dts/bcm96856.dts
new file mode 100644
index 000000000000..032aeb75c983
--- /dev/null
+++ b/arch/arm/dts/bcm96856.dts
@@ -0,0 +1,30 @@ 
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2022 Broadcom Ltd.
+ */
+
+/dts-v1/;
+
+#include "bcm6856.dtsi"
+
+/ {
+	model = "Broadcom BCM96856 Reference Board";
+	compatible = "brcm,bcm96856", "brcm,bcm6856", "brcm,bcmbca";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x0 0x0 0x08000000>;
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
diff --git a/arch/arm/mach-bcmbca/Kconfig b/arch/arm/mach-bcmbca/Kconfig
index d78618820b58..5dd566a98d32 100644
--- a/arch/arm/mach-bcmbca/Kconfig
+++ b/arch/arm/mach-bcmbca/Kconfig
@@ -83,6 +83,13 @@  config BCM6846
 	select DM_SERIAL
 	select BCM6345_SERIAL
 
+config BCM6856
+	bool "Support for Broadcom 6856 Family"
+	select ARM64
+	select SYS_ARCH_TIMER
+	select DM_SERIAL
+	select BCM6345_SERIAL
+
 config BCM6878
 	bool "Support for Broadcom 6878 Family"
 	select SYS_ARCH_TIMER
@@ -101,6 +108,7 @@  source "arch/arm/mach-bcmbca/bcm63178/Kconfig"
 source "arch/arm/mach-bcmbca/bcm6756/Kconfig"
 source "arch/arm/mach-bcmbca/bcm6813/Kconfig"
 source "arch/arm/mach-bcmbca/bcm6846/Kconfig"
+source "arch/arm/mach-bcmbca/bcm6856/Kconfig"
 source "arch/arm/mach-bcmbca/bcm6878/Kconfig"
 
 endif
diff --git a/arch/arm/mach-bcmbca/Makefile b/arch/arm/mach-bcmbca/Makefile
index e5df60e7648b..20f827512005 100644
--- a/arch/arm/mach-bcmbca/Makefile
+++ b/arch/arm/mach-bcmbca/Makefile
@@ -14,4 +14,5 @@  obj-$(CONFIG_BCM63178) += bcm63178/
 obj-$(CONFIG_BCM6756) += bcm6756/
 obj-$(CONFIG_BCM6813) += bcm6813/
 obj-$(CONFIG_BCM6846) += bcm6846/
+obj-$(CONFIG_BCM6856) += bcm6856/
 obj-$(CONFIG_BCM6878) += bcm6878/
diff --git a/arch/arm/mach-bcmbca/bcm6856/Kconfig b/arch/arm/mach-bcmbca/bcm6856/Kconfig
new file mode 100644
index 000000000000..6ac75cb84095
--- /dev/null
+++ b/arch/arm/mach-bcmbca/bcm6856/Kconfig
@@ -0,0 +1,17 @@ 
+# SPDX-License-Identifier: GPL-2.0+
+#
+# (C) Copyright 2022 Broadcom Ltd
+#
+
+if BCM6856
+
+config TARGET_BCM96856
+	bool "Broadcom 6856 Reference Board"
+	depends on ARCH_BCMBCA
+
+config SYS_SOC
+	default "bcm6856"
+
+source "board/broadcom/bcmbca/Kconfig"
+
+endif
diff --git a/arch/arm/mach-bcmbca/bcm6856/Makefile b/arch/arm/mach-bcmbca/bcm6856/Makefile
new file mode 100644
index 000000000000..62624977034b
--- /dev/null
+++ b/arch/arm/mach-bcmbca/bcm6856/Makefile
@@ -0,0 +1,5 @@ 
+# SPDX-License-Identifier: GPL-2.0+
+#
+# (C) Copyright 2022 Broadcom Ltd
+#
+obj-y += mmu_table.o
diff --git a/arch/arm/mach-bcmbca/bcm6856/mmu_table.c b/arch/arm/mach-bcmbca/bcm6856/mmu_table.c
new file mode 100644
index 000000000000..8e53b4929eb8
--- /dev/null
+++ b/arch/arm/mach-bcmbca/bcm6856/mmu_table.c
@@ -0,0 +1,32 @@ 
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ *  Copyright 2022 Broadcom Ltd.
+ */
+#include <common.h>
+#include <asm/armv8/mmu.h>
+#include <linux/sizes.h>
+
+static struct mm_region bcm96856_mem_map[] = {
+		{
+				.virt = 0x00000000UL,
+				.phys = 0x00000000UL,
+				.size = 1UL * SZ_1G,
+				.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+						PTE_BLOCK_INNER_SHARE
+		},
+		{
+				/* SoC peripheral */
+				.virt = 0xff800000UL,
+				.phys = 0xff800000UL,
+				.size = 0x100000,
+				.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+						PTE_BLOCK_NON_SHARE |
+						PTE_BLOCK_PXN | PTE_BLOCK_UXN
+		},
+		{
+				/* List terminator */
+				0,
+		}
+};
+
+struct mm_region *mem_map = bcm96856_mem_map;
diff --git a/board/broadcom/bcmbca/Kconfig b/board/broadcom/bcmbca/Kconfig
index 13815fd7975f..efe504919a0f 100644
--- a/board/broadcom/bcmbca/Kconfig
+++ b/board/broadcom/bcmbca/Kconfig
@@ -86,6 +86,13 @@  config SYS_CONFIG_NAME
 
 endif
 
+if TARGET_BCM96856
+
+config SYS_CONFIG_NAME
+	default "bcm96856"
+
+endif
+
 if TARGET_BCM96878
 
 config SYS_CONFIG_NAME
diff --git a/configs/bcm96856_defconfig b/configs/bcm96856_defconfig
new file mode 100644
index 000000000000..7e1c09769f70
--- /dev/null
+++ b/configs/bcm96856_defconfig
@@ -0,0 +1,23 @@ 
+CONFIG_ARM=y
+CONFIG_COUNTER_FREQUENCY=50000000
+CONFIG_ARCH_BCMBCA=y
+CONFIG_SYS_TEXT_BASE=0x01000000
+CONFIG_SYS_MALLOC_LEN=0x2000000
+CONFIG_SYS_MALLOC_F_LEN=0x8000
+CONFIG_BCM6856=y
+CONFIG_TARGET_BCM96856=y
+CONFIG_NR_DRAM_BANKS=2
+CONFIG_DEFAULT_DEVICE_TREE="bcm96856"
+CONFIG_IDENT_STRING=" Broadcom BCM6856"
+CONFIG_SYS_LOAD_ADDR=0x01000000
+CONFIG_ENV_VARS_UBOOT_CONFIG=y
+CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
+CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x2000000
+CONFIG_OF_STDOUT_VIA_ALIAS=y
+CONFIG_DISPLAY_BOARDINFO_LATE=y
+CONFIG_HUSH_PARSER=y
+CONFIG_SYS_MAXARGS=64
+CONFIG_SYS_BOOTM_LEN=0x4000000
+CONFIG_CMD_CACHE=y
+CONFIG_OF_EMBED=y
+CONFIG_CLK=y
diff --git a/include/configs/bcm96856.h b/include/configs/bcm96856.h
new file mode 100644
index 000000000000..a7ae71eeaafe
--- /dev/null
+++ b/include/configs/bcm96856.h
@@ -0,0 +1,11 @@ 
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2022 Broadcom Ltd.
+ */
+
+#ifndef __BCM96856_H
+#define __BCM96856_H
+
+#define CONFIG_SYS_SDRAM_BASE		0x00000000
+
+#endif