[PATCH v2] Add support for generic BCM SoC chipsets
Christian Daudt
csd at broadcom.com
Sun Nov 11 09:57:14 EST 2012
In order to start upstreaming Broadcom SoC support, create
a starting hierarchy, arch and dts files.
The first support SoC family that is planned is the
BCM281XX (BCM28145/28150/28155/28160) family of dual A9 mobile SoC cores
This code is just the skeleton code for get the machine upstreamed. It
has been made MULTIPLATFORM compatible.
Next steps
----------
Upstream a basic set of drivers - sufficient for a console boot to
ramdisk. These will includer timer, gpio, i2c drivers.
After this basic set, we will proceed with a more comprehensive set
of drivers for the 281XX SoC family.
v2 patch mods
--------
- Remove l2x0_of_init call as there were problems with the code.
A separate patch will be submitted with cache init code
- Rename capri files and refs to bcm281xx-based names
- Add bcm281xx binding doc
- various misc cleanups
Signed-off-by: Christian Daudt <csd at broadcom.com>
---
.../devicetree/bindings/arm/bcm/bcm281xx.txt | 8 ++
arch/arm/Kconfig | 2 +
arch/arm/Makefile | 1 +
arch/arm/boot/dts/Makefile | 1 +
arch/arm/boot/dts/bcm28160-brt.dts | 30 +++++
arch/arm/boot/dts/bcm281xx.dtsi | 50 +++++++++
arch/arm/configs/bcm_defconfig | 114 ++++++++++++++++++++
arch/arm/mach-bcm/Kconfig | 18 +++
arch/arm/mach-bcm/Makefile | 13 +++
arch/arm/mach-bcm/board_bcm.c | 58 ++++++++++
10 files changed, 295 insertions(+), 0 deletions(-)
create mode 100644 Documentation/devicetree/bindings/arm/bcm/bcm281xx.txt
create mode 100644 arch/arm/boot/dts/bcm28160-brt.dts
create mode 100644 arch/arm/boot/dts/bcm281xx.dtsi
create mode 100644 arch/arm/configs/bcm_defconfig
create mode 100644 arch/arm/mach-bcm/Kconfig
create mode 100644 arch/arm/mach-bcm/Makefile
create mode 100644 arch/arm/mach-bcm/board_bcm.c
diff --git a/Documentation/devicetree/bindings/arm/bcm/bcm281xx.txt b/Documentation/devicetree/bindings/arm/bcm/bcm281xx.txt
new file mode 100644
index 0000000..c47200f
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/bcm/bcm281xx.txt
@@ -0,0 +1,8 @@
+Broadcom BCM281XX device tree bindings
+-------------------------------------------
+
+Boards with the bcm281xx SoC family shall have the following properties:
+
+Required root node property:
+
+compatible = "bcm,bcm281xx";
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index ade7e92..3da77ba 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1022,6 +1022,8 @@ source "arch/arm/mach-mvebu/Kconfig"
source "arch/arm/mach-at91/Kconfig"
+source "arch/arm/mach-bcm/Kconfig"
+
source "arch/arm/mach-clps711x/Kconfig"
source "arch/arm/mach-cns3xxx/Kconfig"
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 5f914fc..8523fdb 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -137,6 +137,7 @@ textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
# Machine directory name. This list is sorted alphanumerically
# by CONFIG_* macro name.
machine-$(CONFIG_ARCH_AT91) += at91
+machine-$(CONFIG_ARCH_BCM) += bcm
machine-$(CONFIG_ARCH_BCM2835) += bcm2835
machine-$(CONFIG_ARCH_CLPS711X) += clps711x
machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index f37cf9f..25d347a 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -17,6 +17,7 @@ dtb-$(CONFIG_ARCH_AT91) += aks-cdu.dtb \
usb_a9263.dtb \
usb_a9g20.dtb
dtb-$(CONFIG_ARCH_BCM2835) += bcm2835-rpi-b.dtb
+dtb-$(CONFIG_ARCH_BCM) += capri-brt.dtb
dtb-$(CONFIG_ARCH_DOVE) += dove-cm-a510.dtb \
dove-cubox.dtb \
dove-dove-db.dtb
diff --git a/arch/arm/boot/dts/bcm28160-brt.dts b/arch/arm/boot/dts/bcm28160-brt.dts
new file mode 100644
index 0000000..1d0a217
--- /dev/null
+++ b/arch/arm/boot/dts/bcm28160-brt.dts
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2012 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+/dts-v1/;
+
+/include/ "bcm281xx.dtsi"
+
+/ {
+ model = "BCM28160 BRT board";
+ compatible = "bcm,bcm28160-brt", "bcm,bcm281xx";
+
+ memory {
+ reg = <0x80000000 0x40000000>; /* 1 GB */
+ };
+
+ uart at 3e000000 {
+ status = "okay";
+ };
+
+};
diff --git a/arch/arm/boot/dts/bcm281xx.dtsi b/arch/arm/boot/dts/bcm281xx.dtsi
new file mode 100644
index 0000000..e82713e
--- /dev/null
+++ b/arch/arm/boot/dts/bcm281xx.dtsi
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2012 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+/include/ "skeleton.dtsi"
+
+/ {
+ model = "BCM281xx SoC";
+ compatible = "bcm,bcm281xx";
+ interrupt-parent = <&gic>;
+
+ chosen {
+ bootargs = "console=ttyS0,115200n8";
+ };
+
+ gic: interrupt-controller at 3ff00100 {
+ compatible = "arm,cortex-a9-gic";
+ #interrupt-cells = <3>;
+ #address-cells = <0>;
+ interrupt-controller;
+ reg = <0x3ff01000 0x1000>,
+ <0x3ff00100 0x100>;
+ };
+
+ uart at 3e000000 {
+ compatible = "snps,dw-apb-uart";
+ status = "disabled";
+ reg = <0x3e000000 0x1000>;
+ clock-frequency = <13000000>;
+ interrupts = <0x0 67 0x4>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ };
+
+ L2: l2-cache {
+ compatible = "arm,pl310-cache";
+ reg = <0x3ff20000 0x1000>;
+ cache-unified;
+ cache-level = <2>;
+ };
+};
diff --git a/arch/arm/configs/bcm_defconfig b/arch/arm/configs/bcm_defconfig
new file mode 100644
index 0000000..e3bf2d6
--- /dev/null
+++ b/arch/arm/configs/bcm_defconfig
@@ -0,0 +1,114 @@
+CONFIG_EXPERIMENTAL=y
+# CONFIG_LOCALVERSION_AUTO is not set
+# CONFIG_SWAP is not set
+CONFIG_SYSVIPC=y
+CONFIG_NO_HZ=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_BSD_PROCESS_ACCT_V3=y
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_LOG_BUF_SHIFT=19
+CONFIG_CGROUPS=y
+CONFIG_CGROUP_FREEZER=y
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CGROUP_CPUACCT=y
+CONFIG_RESOURCE_COUNTERS=y
+CONFIG_CGROUP_SCHED=y
+CONFIG_BLK_CGROUP=y
+CONFIG_NAMESPACES=y
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_SYSCTL_SYSCALL=y
+CONFIG_EMBEDDED=y
+# CONFIG_COMPAT_BRK is not set
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_BLK_DEV_BSG is not set
+CONFIG_PARTITION_ADVANCED=y
+CONFIG_EFI_PARTITION=y
+CONFIG_ARCH_BCM=y
+CONFIG_ARM_THUMBEE=y
+CONFIG_ARM_ERRATA_743622=y
+CONFIG_PREEMPT=y
+CONFIG_AEABI=y
+# CONFIG_OABI_COMPAT is not set
+# CONFIG_COMPACTION is not set
+CONFIG_ZBOOT_ROM_TEXT=0x0
+CONFIG_ZBOOT_ROM_BSS=0x0
+CONFIG_ARM_APPENDED_DTB=y
+CONFIG_CMDLINE="console=ttyS0,115200n8 mem=128M"
+CONFIG_CPU_IDLE=y
+CONFIG_VFP=y
+CONFIG_NEON=y
+# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
+CONFIG_PM_RUNTIME=y
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_PROC_DEVICETREE=y
+# CONFIG_BLK_DEV is not set
+CONFIG_SCSI=y
+CONFIG_BLK_DEV_SD=y
+CONFIG_CHR_DEV_SG=y
+CONFIG_SCSI_MULTI_LUN=y
+CONFIG_SCSI_SCAN_ASYNC=y
+CONFIG_INPUT_FF_MEMLESS=y
+CONFIG_INPUT_JOYDEV=y
+CONFIG_INPUT_EVDEV=y
+# CONFIG_KEYBOARD_ATKBD is not set
+# CONFIG_INPUT_MOUSE is not set
+CONFIG_INPUT_TOUCHSCREEN=y
+CONFIG_INPUT_MISC=y
+CONFIG_INPUT_UINPUT=y
+# CONFIG_SERIO is not set
+# CONFIG_LEGACY_PTYS is not set
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_MANY_PORTS=y
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_8250_RSA=y
+CONFIG_SERIAL_8250_DW=y
+CONFIG_HW_RANDOM=y
+CONFIG_I2C=y
+CONFIG_I2C_CHARDEV=y
+# CONFIG_HWMON is not set
+CONFIG_VIDEO_OUTPUT_CONTROL=y
+CONFIG_FB=y
+CONFIG_BACKLIGHT_LCD_SUPPORT=y
+CONFIG_LCD_CLASS_DEVICE=y
+CONFIG_BACKLIGHT_CLASS_DEVICE=y
+# CONFIG_USB_SUPPORT is not set
+CONFIG_NEW_LEDS=y
+CONFIG_LEDS_CLASS=y
+CONFIG_LEDS_TRIGGERS=y
+CONFIG_LEDS_TRIGGER_TIMER=y
+CONFIG_LEDS_TRIGGER_HEARTBEAT=y
+CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_AUTOFS4_FS=y
+CONFIG_FUSE_FS=y
+CONFIG_MSDOS_FS=y
+CONFIG_VFAT_FS=y
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_CONFIGFS_FS=y
+# CONFIG_MISC_FILESYSTEMS is not set
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_ISO8859_1=y
+CONFIG_PRINTK_TIME=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_DEBUG_FS=y
+CONFIG_DETECT_HUNG_TASK=y
+CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=110
+CONFIG_BOOTPARAM_HUNG_TASK_PANIC=y
+CONFIG_DEBUG_INFO=y
+# CONFIG_FTRACE is not set
+CONFIG_DEBUG_LL=y
+CONFIG_CRC_CCITT=y
+CONFIG_CRC_T10DIF=y
+CONFIG_CRC_ITU_T=y
+CONFIG_CRC7=y
+CONFIG_XZ_DEC=y
+CONFIG_AVERAGE=y
diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig
new file mode 100644
index 0000000..8c1393a
--- /dev/null
+++ b/arch/arm/mach-bcm/Kconfig
@@ -0,0 +1,18 @@
+config ARCH_BCM
+ bool "Broadcom SoC" if ARCH_MULTI_V7
+ depends on MMU
+ select ARCH_REQUIRE_GPIOLIB
+ select ARM_ERRATA_754322
+ select ARM_ERRATA_764369 if SMP
+ select ARM_GIC
+ select CPU_V7
+ select GENERIC_CLOCKEVENTS
+ select GENERIC_GPIO
+ select GENERIC_TIME
+ select GPIO_BCM
+ select SPARSE_IRQ
+ select TICK_ONESHOT
+ help
+ This enables support for system based on Broadcom SoCs.
+ It currently supports BCM28145/28150/28155/28160 chips.
+
diff --git a/arch/arm/mach-bcm/Makefile b/arch/arm/mach-bcm/Makefile
new file mode 100644
index 0000000..bbf4122
--- /dev/null
+++ b/arch/arm/mach-bcm/Makefile
@@ -0,0 +1,13 @@
+#
+# Copyright (C) 2012 Broadcom Corporation
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation version 2.
+#
+# This program is distributed "as is" WITHOUT ANY WARRANTY of any
+# kind, whether express or implied; without even the implied warranty
+# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+obj-$(CONFIG_ARCH_BCM) := board_bcm.o
diff --git a/arch/arm/mach-bcm/board_bcm.c b/arch/arm/mach-bcm/board_bcm.c
new file mode 100644
index 0000000..5afabab
--- /dev/null
+++ b/arch/arm/mach-bcm/board_bcm.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2012 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <asm/io.h>
+
+#include <asm/mach/arch.h>
+#include <asm/hardware/gic.h>
+
+#include <asm/mach/time.h>
+
+static const struct of_device_id irq_match[] = {
+ {.compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
+ {}
+};
+
+static void timer_init(void)
+{
+}
+
+static struct sys_timer timer = {
+ .init = timer_init,
+};
+
+static void __init init_irq(void)
+{
+ of_irq_init(irq_match);
+}
+
+static void __init board_init(void)
+{
+ of_platform_populate(NULL, of_default_bus_match_table, NULL,
+ &platform_bus);
+}
+
+static const char * const capri_dt_compat[] = { "bcm,capri", NULL, };
+
+DT_MACHINE_START(CAPRI_DT, "Broadcom Application Processor")
+ .init_irq = init_irq,
+ .timer = &timer,
+ .init_machine = board_init,
+ .dt_compat = capri_dt_compat,
+ .handle_irq = gic_handle_irq,
+MACHINE_END
--
1.7.1
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