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Add support for generic BCM SoC chipsets 

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 (BCM11130/11140/11351/28145/28155) 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

v3 patch mods
-------------
 - Remove extra #include lines
 - Remove remaining references to capri
 - dt uart chipset string added
 - cleaned up chip # references

v4 patch mods
-------------
 - swap order of compatible definitions for uart
 - fix typo

v5 patch mods
-------------
 - Rename bcm281xx to bcm11351 in dts+code,
   leaving references to bcm281xx only in help+comments.

v6 patch mods
-------------
 - fix typo in uart 'compatible' string

Signed-off-by: Christian Daudt <csd@broadcom.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Christian Daudt 2012-11-19 09:46:10 -08:00 committed by Olof Johansson
parent 0056a985fa
commit 8ac49e0485
10 changed files with 296 additions and 0 deletions
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9
Documentation/devicetree/bindings/arm/bcm/bcm11351.txt Normal file
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@ -0,0 +1,9 @@
Broadcom BCM11351 device tree bindings
-------------------------------------------
Boards with the bcm281xx SoC family (which includes bcm11130, bcm11140,
bcm11351, bcm28145, bcm28155 SoCs) shall have the following properties:
Required root node property:
compatible = "bcm,bcm11351";

2
arch/arm/Kconfig
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@ -1009,6 +1009,8 @@ 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"

1
arch/arm/Makefile
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@ -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

1
arch/arm/boot/dts/Makefile
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@ -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-$(CONFIG_ARCH_BCM) += bcm11351-brt.dtb
dtb-$(CONFIG_ARCH_DOVE) += dove-cm-a510.dtb \
dove-cubox.dtb \
dove-dove-db.dtb

30
arch/arm/boot/dts/bcm11351-brt.dts Normal file
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@ -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/ "bcm11351.dtsi"
/ {
model = "BCM11351 BRT board";
compatible = "bcm,bcm11351-brt", "bcm,bcm11351";
memory {
reg = <0x80000000 0x40000000>; /* 1 GB */
};
uart@3e000000 {
status = "okay";
};
};

50
arch/arm/boot/dts/bcm11351.dtsi Normal file
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@ -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 = "BCM11351 SoC";
compatible = "bcm,bcm11351";
interrupt-parent = <&gic>;
chosen {
bootargs = "console=ttyS0,115200n8";
};
gic: interrupt-controller@3ff00100 {
compatible = "arm,cortex-a9-gic";
#interrupt-cells = <3>;
#address-cells = <0>;
interrupt-controller;
reg = <0x3ff01000 0x1000>,
<0x3ff00100 0x100>;
};
uart@3e000000 {
compatible = "bcm,bcm11351-dw-apb-uart", "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>;
};
};

114
arch/arm/configs/bcm_defconfig Normal file
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@ -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

19
arch/arm/mach-bcm/Kconfig Normal file
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@ -0,0 +1,19 @@
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 the 'BCM281XX' family, which includes
BCM11130, BCM11140, BCM11351, BCM28145 and
BCM28155 variants.

13
arch/arm/mach-bcm/Makefile Normal file
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@ -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

57
arch/arm/mach-bcm/board_bcm.c Normal file
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@ -0,0 +1,57 @@
/*
* 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/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 bcm11351_dt_compat[] = { "bcm,bcm11351", NULL, };
DT_MACHINE_START(BCM11351_DT, "Broadcom Application Processor")
.init_irq = init_irq,
.timer = &timer,
.init_machine = board_init,
.dt_compat = bcm11351_dt_compat,
.handle_irq = gic_handle_irq,
MACHINE_END