ARC: [TB10x] Add support for TB10x platform
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>
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 34974e2..491ae79 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -77,6 +77,7 @@
menu "ARC Platform/SoC/Board"
source "arch/arc/plat-arcfpga/Kconfig"
+source "arch/arc/plat-tb10x/Kconfig"
#New platform adds here
endmenu
diff --git a/arch/arc/Makefile b/arch/arc/Makefile
index f30e0a1..183397f 100644
--- a/arch/arc/Makefile
+++ b/arch/arc/Makefile
@@ -91,6 +91,7 @@
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/
diff --git a/arch/arc/configs/tb10x_defconfig b/arch/arc/configs/tb10x_defconfig
new file mode 100644
index 0000000..4fa5cd9
--- /dev/null
+++ b/arch/arc/configs/tb10x_defconfig
@@ -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
diff --git a/arch/arc/include/asm/serial.h b/arch/arc/include/asm/serial.h
index 4dff5a1..602b097 100644
--- a/arch/arc/include/asm/serial.h
+++ b/arch/arc/include/asm/serial.h
@@ -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 */
diff --git a/arch/arc/plat-tb10x/Kconfig b/arch/arc/plat-tb10x/Kconfig
new file mode 100644
index 0000000..4e12127
--- /dev/null
+++ b/arch/arc/plat-tb10x/Kconfig
@@ -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
diff --git a/arch/arc/plat-tb10x/Makefile b/arch/arc/plat-tb10x/Makefile
new file mode 100644
index 0000000..89611d2
--- /dev/null
+++ b/arch/arc/plat-tb10x/Makefile
@@ -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
diff --git a/arch/arc/plat-tb10x/tb10x.c b/arch/arc/plat-tb10x/tb10x.c
new file mode 100644
index 0000000..d356769
--- /dev/null
+++ b/arch/arc/plat-tb10x/tb10x.c
@@ -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