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ARC: [TB10x] Add support for TB10x platform

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Infrastructure required to make the Linux kernel compile and boot on the
Abilis Systems TB10x series of SOCs based on ARC700 CPUs:
  - Kmake related files (Kconfig, Makefile, tb10x_defconfig)
  - TB10x platform initialisation

Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com>
Signed-off-by: Pierrick Hascoet <pierrick.hascoet@abilis.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Christian Ruppert 2013-04-12 08:40:59 +02:00 committed by Vineet Gupta
parent 2eb9504bcc
commit 072eb69390
7 changed files with 257 additions and 0 deletions
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1
arch/arc/Kconfig
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@ -77,6 +77,7 @@ menu "ARC Architecture Configuration"
menu "ARC Platform/SoC/Board"
source "arch/arc/plat-arcfpga/Kconfig"
source "arch/arc/plat-tb10x/Kconfig"
#New platform adds here
endmenu

1
arch/arc/Makefile
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@ -91,6 +91,7 @@ core-y += arch/arc/
core-y += arch/arc/boot/dts/
core-$(CONFIG_ARC_PLAT_FPGA_LEGACY) += arch/arc/plat-arcfpga/
core-$(CONFIG_ARC_PLAT_TB10X) += arch/arc/plat-tb10x/
drivers-$(CONFIG_OPROFILE) += arch/arc/oprofile/

117
arch/arc/configs/tb10x_defconfig Normal file
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@ -0,0 +1,117 @@
CONFIG_CROSS_COMPILE="arc-elf32-"
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_DEFAULT_HOSTNAME="tb10x"
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=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=16
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE="../tb10x-rootfs.cpio"
CONFIG_INITRAMFS_ROOT_UID=2100
CONFIG_INITRAMFS_ROOT_GID=501
# CONFIG_RD_GZIP is not set
CONFIG_SYSCTL_SYSCALL=y
CONFIG_KALLSYMS_ALL=y
# CONFIG_AIO is not set
CONFIG_EMBEDDED=y
# CONFIG_COMPAT_BRK is not set
CONFIG_SLAB=y
CONFIG_MODULES=y
CONFIG_MODULE_FORCE_LOAD=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_BLOCK is not set
CONFIG_ARC_PLAT_TB10X=y
CONFIG_ARC_CACHE_LINE_SHIFT=5
# CONFIG_ARC_HAS_RTSC is not set
CONFIG_ARC_STACK_NONEXEC=y
CONFIG_HZ=250
CONFIG_ARC_BUILTIN_DTB_NAME="abilis_tb100_dvk"
CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_COMPACTION is not set
# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_INET_LRO is not set
# CONFIG_INET_DIAG is not set
# CONFIG_IPV6 is not set
# CONFIG_WIRELESS is not set
# CONFIG_FIRMWARE_IN_KERNEL is not set
CONFIG_PROC_DEVICETREE=y
CONFIG_NETDEVICES=y
# CONFIG_NET_CADENCE is not set
# CONFIG_NET_VENDOR_BROADCOM is not set
# CONFIG_NET_VENDOR_INTEL is not set
# CONFIG_NET_VENDOR_MARVELL is not set
# CONFIG_NET_VENDOR_MICREL is not set
# CONFIG_NET_VENDOR_NATSEMI is not set
# CONFIG_NET_VENDOR_SEEQ is not set
CONFIG_STMMAC_ETH=y
CONFIG_STMMAC_DEBUG_FS=y
CONFIG_STMMAC_DA=y
CONFIG_STMMAC_CHAINED=y
# CONFIG_NET_VENDOR_WIZNET is not set
# CONFIG_WLAN is not set
# CONFIG_INPUT is not set
# CONFIG_SERIO is not set
# CONFIG_VT is not set
CONFIG_DEVPTS_MULTIPLE_INSTANCES=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=1
CONFIG_SERIAL_8250_RUNTIME_UARTS=1
CONFIG_SERIAL_8250_DW=y
# CONFIG_HW_RANDOM is not set
CONFIG_I2C=y
# CONFIG_I2C_COMPAT is not set
CONFIG_I2C_DESIGNWARE_PLATFORM=y
CONFIG_GPIO_SYSFS=y
# CONFIG_HWMON is not set
# CONFIG_USB_SUPPORT is not set
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
CONFIG_LEDS_GPIO=y
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_TIMER=y
CONFIG_LEDS_TRIGGER_ONESHOT=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_LEDS_TRIGGER_CPU=y
CONFIG_LEDS_TRIGGER_GPIO=y
CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
CONFIG_LEDS_TRIGGER_TRANSIENT=y
CONFIG_DMADEVICES=y
CONFIG_DW_DMAC=y
CONFIG_NET_DMA=y
CONFIG_ASYNC_TX_DMA=y
# CONFIG_IOMMU_SUPPORT is not set
# CONFIG_DNOTIFY is not set
CONFIG_PROC_KCORE=y
CONFIG_TMPFS=y
CONFIG_CONFIGFS_FS=y
# CONFIG_MISC_FILESYSTEMS is not set
# CONFIG_NETWORK_FILESYSTEMS is not set
# CONFIG_ENABLE_WARN_DEPRECATED is not set
CONFIG_MAGIC_SYSRQ=y
CONFIG_STRIP_ASM_SYMS=y
CONFIG_DEBUG_FS=y
CONFIG_HEADERS_CHECK=y
CONFIG_DEBUG_SECTION_MISMATCH=y
CONFIG_DETECT_HUNG_TASK=y
CONFIG_SCHEDSTATS=y
CONFIG_TIMER_STATS=y
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_DEBUG_STACKOVERFLOW=y
# CONFIG_CRYPTO_ANSI_CPRNG is not set
# CONFIG_CRYPTO_HW is not set

10
arch/arc/include/asm/serial.h
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@ -22,4 +22,14 @@
#define BASE_BAUD (arc_get_core_freq() / 16)
/*
* This is definitely going to break early 8250 consoles on multi-platform
* images but hey, it won't add any code complexity for a debug feature of
* one broken driver.
*/
#ifdef CONFIG_ARC_PLAT_TB10X
#undef BASE_BAUD
#define BASE_BAUD (arc_get_core_freq() / 16 / 3)
#endif
#endif /* _ASM_ARC_SERIAL_H */

36
arch/arc/plat-tb10x/Kconfig Normal file
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@ -0,0 +1,36 @@
# Abilis Systems TB10x platform kernel configuration file
#
# Author: Christian Ruppert <christian.ruppert@abilis.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
menuconfig ARC_PLAT_TB10X
bool "Abilis TB10x"
select COMMON_CLK
select PINCTRL
select PINMUX
select ARCH_REQUIRE_GPIOLIB
help
Support for platforms based on the TB10x home media gateway SOC by
Abilis Systems. TB10x is based on the ARC700 CPU architecture.
Say Y if you are building a kernel for one of the SOCs in this
series (e.g. TB100 or TB101). If in doubt say N.
if ARC_PLAT_TB10X
config GENERIC_GPIO
def_bool y
endif

21
arch/arc/plat-tb10x/Makefile Normal file
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@ -0,0 +1,21 @@
# Abilis Systems TB10x platform Makefile
#
# Author: Christian Ruppert <christian.ruppert@abilis.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
KBUILD_CFLAGS += -Iarch/arc/plat-tb10x/include
obj-y += tb10x.o

71
arch/arc/plat-tb10x/tb10x.c Normal file
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@ -0,0 +1,71 @@
/*
* Abilis Systems TB10x platform initialisation
*
* Copyright (C) Abilis Systems 2012
*
* Author: Christian Ruppert <christian.ruppert@abilis.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/init.h>
#include <linux/of_platform.h>
#include <linux/clk-provider.h>
#include <linux/pinctrl/consumer.h>
#include <asm/mach_desc.h>
static void __init tb10x_platform_init(void)
{
of_clk_init(NULL);
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}
static void __init tb10x_platform_late_init(void)
{
struct device_node *dn;
/*
* Pinctrl documentation recommends setting up the iomux here for
* all modules which don't require control over the pins themselves.
* Modules which need this kind of assistance are compatible with
* "abilis,simple-pinctrl", i.e. we can easily iterate over them.
* TODO: Does this recommended method work cleanly with pins required
* by modules?
*/
for_each_compatible_node(dn, NULL, "abilis,simple-pinctrl") {
struct platform_device *pd = of_find_device_by_node(dn);
struct pinctrl *pctl;
pctl = pinctrl_get_select(&pd->dev, "abilis,simple-default");
if (IS_ERR(pctl)) {
int ret = PTR_ERR(pctl);
dev_err(&pd->dev, "Could not set up pinctrl: %d\n",
ret);
}
}
}
static const char *tb10x_compat[] __initdata = {
"abilis,arc-tb10x",
NULL,
};
MACHINE_START(TB10x, "tb10x")
.dt_compat = tb10x_compat,
.init_machine = tb10x_platform_init,
.init_late = tb10x_platform_late_init,
MACHINE_END