[PATCH v4 1/3] arm: bcmbca: add bcm6856 SoC support under CONFIG_ARCH_BCMBCA
William Zhang
william.zhang at broadcom.com
Mon Aug 22 20:31:41 CEST 2022
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 at broadcom.com>
---
Changes in v4:
-Add help in BCM6856 Kconfig option to include the list of the supported
chips.
MAINTAINERS | 1 +
arch/arm/dts/Makefile | 2 +
arch/arm/dts/bcm6856.dtsi | 103 +++++++++++++++++++++++
arch/arm/dts/bcm96856.dts | 30 +++++++
arch/arm/mach-bcmbca/Kconfig | 11 +++
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, 243 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 at 0 {
+ compatible = "brcm,brahma-b53";
+ device_type = "cpu";
+ reg = <0x0 0x0>;
+ next-level-cache = <&L2_0>;
+ enable-method = "psci";
+ };
+
+ B53_1: cpu at 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 at 81000000 {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x0 0x0 0x81000000 0x8000>;
+
+ gic: interrupt-controller at 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 at ff800000 {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x0 0x0 0xff800000 0x800000>;
+
+ uart0: serial at 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 at 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..f35f02c59772 100644
--- a/arch/arm/mach-bcmbca/Kconfig
+++ b/arch/arm/mach-bcmbca/Kconfig
@@ -83,6 +83,16 @@ 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
+ help
+ Broadcom BCM6856 is a dual core Brahma-B53 ARMv8 based xPON Gateway
+ SoC. This SoC family includes BCM6856, BCM6836 and BCM4910.
+
config BCM6878
bool "Support for Broadcom 6878 Family"
select SYS_ARCH_TIMER
@@ -101,6 +111,7 @@ 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
--
2.37.1
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