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linux: add support of Synopsys ARC770-based boards

This patch introduces support of new boards with ARC cores.

 [1] Synopsys SDP board
     This is a new-generation development board from Synopsys that
     consists of base-board and CPU tile-board (which might have a real
     ASIC or FPGA with CPU image).
     It sports a lot of DesignWare peripherals like GMAC, USB, SPI, I2C
     etc and is intended to be used for early development of ARC-based
     products.

 [2] nSIM
     This is a virtual board implemented in Synopsys proprietary
     software simulator (even though available for free for open source
     community). This board has only serial port as a peripheral and so
     it is meant to be used for runtime testing which is especially
     useful during bring-up of new tools and platforms.
     What's also important ARC cores are very configurable so there're
     many variations of options like cache sizes, their line lengths,
     additional hardware blocks like multipliers, dividers etc. And this
     board could be used to make sure built software still runs on
     different HW configurations.

Cc: Felix Fietkau <nbd@openwrt.org>
Cc: Jo-Philipp Wich <jow@openwrt.org>
Cc: Jonas Gorski <jogo@openwrt.org>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

SVN-Revision: 47589
v19.07.3_mercusys_ac12_duma
Felix Fietkau 7 years ago
parent
commit
576621f1e3
  1. 2
      include/kernel.mk
  2. 26
      target/linux/arc770/Makefile
  3. 3
      target/linux/arc770/base-files.mk
  4. 23
      target/linux/arc770/base-files/etc/uci-defaults/02_network
  5. 50
      target/linux/arc770/base-files/lib/arc.sh
  6. 9
      target/linux/arc770/base-files/lib/preinit/01_preinit_arc.sh
  7. 179
      target/linux/arc770/config-4.3
  8. 100
      target/linux/arc770/dts/axc001.dtsi
  9. 22
      target/linux/arc770/dts/axs101.dts
  10. 224
      target/linux/arc770/dts/axs10x_mb.dtsi
  11. 71
      target/linux/arc770/dts/nsim_700.dts
  12. 37
      target/linux/arc770/dts/skeleton.dtsi
  13. 16
      target/linux/arc770/generic/profiles/00-default.mk
  14. 15
      target/linux/arc770/generic/profiles/01-minimal.mk
  15. 16
      target/linux/arc770/generic/profiles/02-axs101.mk
  16. 15
      target/linux/arc770/generic/profiles/03-nsim_700.mk
  17. 8
      target/linux/arc770/generic/target.mk
  18. 40
      target/linux/arc770/image/Makefile
  19. 36
      target/linux/arc770/patches-4.3/0001-openwrt-arc-remove-dependency-on-DEVTMPFS.patch
  20. 91
      target/linux/arc770/patches-4.3/0002-openwrt-arc-add-OWRTDTB-section.patch

2
include/kernel.mk

@ -64,6 +64,8 @@ ifneq (,$(findstring uml,$(BOARD)))
LINUX_KARCH=um
else ifneq (,$(findstring $(ARCH) , aarch64 aarch64_be ))
LINUX_KARCH := arm64
else ifneq (,$(findstring $(ARCH) , arceb ))
LINUX_KARCH := arc
else ifneq (,$(findstring $(ARCH) , armeb ))
LINUX_KARCH := arm
else ifneq (,$(findstring $(ARCH) , mipsel mips64 mips64el ))

26
target/linux/arc770/Makefile

@ -0,0 +1,26 @@
#
# Copyright (C) 2015 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
ARCH:=arc
BOARD:=arc770
BOARDNAME:=Synopsys DesignWare ARC 770D
CFLAGS:=-Os -pipe -fno-caller-saves -matomic
MAINTAINER:=Alexey Brodkin <abrodkin@synopsys.com>
SUBTARGETS:=generic
KERNEL_PATCHVER:=4.3
DEVICE_TYPE:=developerboard
include $(INCLUDE_DIR)/target.mk
define Target/Description
Synopsys DesignWare boards
endef
$(eval $(call BuildTarget))

3
target/linux/arc770/base-files.mk

@ -0,0 +1,3 @@
define Package/base-files/install-target
rm -f $(1)/etc/config/network
endef

23
target/linux/arc770/base-files/etc/uci-defaults/02_network

@ -0,0 +1,23 @@
#!/bin/sh
#
# Copyright (C) 2015 OpenWrt.org
#
[ -e /etc/config/network ] && exit 0
touch /etc/config/network
. /lib/arc.sh
. /lib/functions/uci-defaults.sh
ucidef_set_interface_loopback
case "$( arc_board_name )" in
"arc-sdp"*)
ucidef_set_interface_raw "lan" "eth0" "dhcp"
;;
esac
uci commit network
exit 0

50
target/linux/arc770/base-files/lib/arc.sh

@ -0,0 +1,50 @@
#!/bin/sh
#
# Copyright (C) 2015 OpenWrt.org
#
# defaults
ARC_BOARD_NAME="generic"
ARC_BOARD_MODEL="Generic ARC board"
arc_board_detect() {
local board
local model
local compatible
[ -e "/tmp/sysinfo/" ] || mkdir -p "/tmp/sysinfo/"
model="$( cat /proc/device-tree/model )"
compatible="$( cat /proc/device-tree/compatible )"
case "$compatible" in
"snps,axs101""snps,arc-sdp")
board="arc-sdp";
;;
"snps,nsim")
board="arc-nsim";
;;
esac
if [ "$board" != "" ]; then
ARC_BOARD_NAME="$board"
fi
if [ "$model" != "" ]; then
ARC_BOARD_MODEL="$model"
fi
echo "$ARC_BOARD_NAME" > /tmp/sysinfo/board_name
echo "$ARC_BOARD_MODEL" > /tmp/sysinfo/model
echo "Detected $ARC_BOARD_NAME // $ARC_BOARD_MODEL"
}
arc_board_name() {
local name
[ -f /tmp/sysinfo/board_name ] && name="$(cat /tmp/sysinfo/board_name)"
[ -z "$name" ] && name="unknown"
echo "$name"
}

9
target/linux/arc770/base-files/lib/preinit/01_preinit_arc.sh

@ -0,0 +1,9 @@
#!/bin/sh
do_arc() {
. /lib/arc.sh
arc_board_detect
}
boot_hook_add preinit_main do_arc

179
target/linux/arc770/config-4.3

@ -0,0 +1,179 @@
# CONFIG_16KSTACKS is not set
CONFIG_ARC=y
CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE=y
# CONFIG_ARCH_HAS_GCOV_PROFILE_ALL is not set
# CONFIG_ARCH_HAS_SG_CHAIN is not set
CONFIG_ARCH_REQUIRE_GPIOLIB=y
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
CONFIG_ARC_BUILTIN_DTB_NAME=""
CONFIG_ARC_CACHE=y
CONFIG_ARC_CACHE_LINE_SHIFT=5
CONFIG_ARC_CACHE_PAGES=y
# CONFIG_ARC_CACHE_VIPT_ALIASING is not set
# CONFIG_ARC_CANT_LLSC is not set
# CONFIG_ARC_COMPACT_IRQ_LEVELS is not set
# CONFIG_ARC_CPU_750D is not set
CONFIG_ARC_CPU_770=y
CONFIG_ARC_CURR_IN_REG=y
CONFIG_ARC_DBG=y
# CONFIG_ARC_DBG_TLB_MISS_COUNT is not set
# CONFIG_ARC_DBG_TLB_PARANOIA is not set
CONFIG_ARC_DW2_UNWIND=y
# CONFIG_ARC_EMUL_UNALIGNED is not set
# CONFIG_ARC_FPU_SAVE_RESTORE is not set
CONFIG_ARC_HAS_DCACHE=y
# CONFIG_ARC_HAS_DCCM is not set
CONFIG_ARC_HAS_HW_MPY=y
CONFIG_ARC_HAS_ICACHE=y
# CONFIG_ARC_HAS_ICCM is not set
CONFIG_ARC_HAS_LLSC=y
CONFIG_ARC_HAS_SWAPE=y
# CONFIG_ARC_METAWARE_HLINK is not set
# CONFIG_ARC_MMU_V1 is not set
# CONFIG_ARC_MMU_V2 is not set
CONFIG_ARC_MMU_V3=y
# CONFIG_ARC_PAGE_SIZE_16K is not set
# CONFIG_ARC_PAGE_SIZE_4K is not set
CONFIG_ARC_PAGE_SIZE_8K=y
CONFIG_ARC_PLAT_AXS10X=y
CONFIG_ARC_PLAT_SIM=y
# CONFIG_ARC_PLAT_TB10X is not set
# CONFIG_ARC_UBOOT_SUPPORT is not set
CONFIG_AXS101=y
CONFIG_CLKDEV_LOOKUP=y
CONFIG_CLONE_BACKWARDS=y
CONFIG_COMMON_CLK=y
# CONFIG_CPU_BIG_ENDIAN is not set
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_WORKQUEUE=y
CONFIG_DTC=y
CONFIG_DWMAC_GENERIC=y
# CONFIG_DWMAC_IPQ806X is not set
# CONFIG_DWMAC_LPC18XX is not set
# CONFIG_DWMAC_MESON is not set
# CONFIG_DWMAC_ROCKCHIP is not set
# CONFIG_DWMAC_SOCFPGA is not set
# CONFIG_DWMAC_STI is not set
# CONFIG_DWMAC_SUNXI is not set
CONFIG_DW_APB_ICTL=y
CONFIG_GENERIC_ATOMIC64=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CSUM=y
CONFIG_GENERIC_FIND_FIRST_BIT=y
CONFIG_GENERIC_IO=y
CONFIG_GENERIC_IRQ_CHIP=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
# CONFIG_GEN_RTC is not set
CONFIG_GPIOLIB=y
CONFIG_GPIO_DEVRES=y
CONFIG_GPIO_DWAPB=y
CONFIG_GPIO_GENERIC=y
CONFIG_HAS_DMA=y
CONFIG_HAS_IOMEM=y
# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
# CONFIG_HAVE_ARCH_BITREVERSE is not set
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
CONFIG_HAVE_CLK=y
CONFIG_HAVE_CLK_PREPARE=y
CONFIG_HAVE_DEBUG_STACKOVERFLOW=y
CONFIG_HAVE_FUTEX_CMPXCHG=y
# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_HAVE_MEMBLOCK=y
CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_HAVE_NET_DSA=y
CONFIG_HAVE_OPROFILE=y
CONFIG_HAVE_PERF_EVENTS=y
CONFIG_HZ_PERIODIC=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_IRQCHIP=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_WORK=y
CONFIG_ISA_ARCOMPACT=y
# CONFIG_ISA_ARCV2 is not set
CONFIG_KALLSYMS=y
CONFIG_LIBFDT=y
CONFIG_LINUX_LINK_BASE=0x80000000
CONFIG_LZO_COMPRESS=y
CONFIG_LZO_DECOMPRESS=y
CONFIG_MAC80211_STA_HASH_MAX_SIZE=0
CONFIG_MDIO_BOARDINFO=y
CONFIG_MFD_SYSCON=y
CONFIG_MMC=y
CONFIG_MMC_DW=y
# CONFIG_MMC_DW_EXYNOS is not set
CONFIG_MMC_DW_IDMAC=y
# CONFIG_MMC_DW_K3 is not set
CONFIG_MMC_DW_PLTFM=y
CONFIG_MMC_SDHCI=y
# CONFIG_MMC_SDHCI_OF_AT91 is not set
CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MODULES_USE_ELF_RELA=y
CONFIG_NATIONAL_PHY=y
CONFIG_NEED_PER_CPU_KM=y
# CONFIG_NET_CADENCE is not set
CONFIG_NET_PTP_CLASSIFY=y
# CONFIG_NET_VENDOR_ARC 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_QUALCOMM is not set
# CONFIG_NET_VENDOR_ROCKER is not set
# CONFIG_NET_VENDOR_SAMSUNG is not set
# CONFIG_NET_VENDOR_SEEQ is not set
# CONFIG_NET_VENDOR_VIA is not set
# CONFIG_NET_VENDOR_WIZNET is not set
CONFIG_NO_BOOTMEM=y
CONFIG_NO_IOPORT_MAP=y
CONFIG_OF=y
CONFIG_OF_ADDRESS=y
CONFIG_OF_EARLY_FLATTREE=y
CONFIG_OF_FLATTREE=y
CONFIG_OF_GPIO=y
CONFIG_OF_IRQ=y
CONFIG_OF_MDIO=y
CONFIG_OF_MTD=y
CONFIG_OF_NET=y
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_PERF_USE_VMALLOC=y
CONFIG_PGTABLE_LEVELS=2
CONFIG_PHYLIB=y
CONFIG_PPS=y
CONFIG_PREEMPT=y
CONFIG_PREEMPT_COUNT=y
# CONFIG_PREEMPT_NONE is not set
CONFIG_PREEMPT_RCU=y
CONFIG_PTP_1588_CLOCK=y
# CONFIG_RCU_BOOST is not set
CONFIG_RCU_STALL_COMMON=y
CONFIG_REGMAP=y
CONFIG_REGMAP_MMIO=y
CONFIG_RESET_CONTROLLER=y
# CONFIG_RTC is not set
# CONFIG_SCHED_INFO is not set
# CONFIG_SCSI_DMA is not set
CONFIG_SERIAL_8250_DEPRECATED_OPTIONS=y
CONFIG_SERIAL_8250_DW=y
CONFIG_SERIAL_8250_NR_UARTS=4
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
CONFIG_SERIAL_ARC=y
CONFIG_SERIAL_ARC_CONSOLE=y
CONFIG_SERIAL_ARC_NR_PORTS=1
CONFIG_SERIAL_OF_PLATFORM=y
# CONFIG_SG_SPLIT is not set
CONFIG_SRCU=y
CONFIG_STACKTRACE=y
CONFIG_STMMAC_ETH=y
CONFIG_STMMAC_PLATFORM=y
# CONFIG_SUNXI_SRAM is not set
# CONFIG_SYSTEM_DATA_VERIFICATION is not set
CONFIG_TICK_CPU_ACCOUNTING=y
CONFIG_UNINLINE_SPIN_UNLOCK=y
CONFIG_USB_SUPPORT=y
CONFIG_ZONE_DMA_FLAG=0

100
target/linux/arc770/dts/axc001.dtsi

@ -0,0 +1,100 @@
/*
* Copyright (C) 2013-15 Synopsys, Inc. (www.synopsys.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.
*/
/*
* Device tree for AXC001 770D/EM6/AS221 CPU card
* Note that this file only supports the 770D CPU
*/
/ {
compatible = "snps,arc";
clock-frequency = <750000000>; /* 750 MHZ */
#address-cells = <1>;
#size-cells = <1>;
cpu_card {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x00000000 0xf0000000 0x10000000>;
cpu_intc: arc700-intc@cpu {
compatible = "snps,arc700-intc";
interrupt-controller;
#interrupt-cells = <1>;
};
/*
* this GPIO block ORs all interrupts on CPU card (creg,..)
* to uplink only 1 IRQ to ARC core intc
*/
dw-apb-gpio@0x2000 {
compatible = "snps,dw-apb-gpio";
reg = < 0x2000 0x80 >;
#address-cells = <1>;
#size-cells = <0>;
ictl_intc: gpio-controller@0 {
compatible = "snps,dw-apb-gpio-port";
gpio-controller;
#gpio-cells = <2>;
snps,nr-gpios = <30>;
reg = <0>;
interrupt-controller;
#interrupt-cells = <2>;
interrupt-parent = <&cpu_intc>;
interrupts = <15>;
};
};
debug_uart: dw-apb-uart@0x5000 {
compatible = "snps,dw-apb-uart";
reg = <0x5000 0x100>;
clock-frequency = <33333000>;
interrupt-parent = <&ictl_intc>;
interrupts = <19 4>;
baud = <115200>;
reg-shift = <2>;
reg-io-width = <4>;
};
arcpmu0: pmu {
compatible = "snps,arc700-pct";
};
};
/*
* This INTC is actually connected to DW APB GPIO
* which acts as a wire between MB INTC and CPU INTC.
* GPIO INTC is configured in platform init code
* and here we mimic direct connection from MB INTC to
* CPU INTC, thus we set "interrupts = <7>" instead of
* "interrupts = <12>"
*
* This intc actually resides on MB, but we move it here to
* avoid duplicating the MB dtsi file given that IRQ from
* this intc to cpu intc are different for axs101 and axs103
*/
mb_intc: dw-apb-ictl@0xe0012000 {
#interrupt-cells = <1>;
compatible = "snps,dw-apb-ictl";
reg = < 0xe0012000 0x200 >;
interrupt-controller;
interrupt-parent = <&cpu_intc>;
interrupts = < 7 >;
};
memory {
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x00000000 0x80000000 0x40000000>;
device_type = "memory";
reg = <0x00000000 0x20000000>; /* 512MiB */
};
};

22
target/linux/arc770/dts/axs101.dts

@ -0,0 +1,22 @@
/*
* Copyright (C) 2013-15 Synopsys, Inc. (www.synopsys.com)
*
* ARC AXS101 S/W development platform
*
* 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.
*/
/dts-v1/;
/include/ "axc001.dtsi"
/include/ "axs10x_mb.dtsi"
/ {
model = "Synopsys AXS101 Development Board";
compatible = "snps,axs101", "snps,arc-sdp";
chosen {
bootargs = "earlycon=uart8250,mmio32,0xe0022000,115200n8 console=ttyS3,115200n8";
};
};

224
target/linux/arc770/dts/axs10x_mb.dtsi

@ -0,0 +1,224 @@
/*
* Support for peripherals on the AXS10x mainboard
*
* Copyright (C) 2013-15 Synopsys, Inc. (www.synopsys.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.
*/
/ {
axs10x_mb {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x00000000 0xe0000000 0x10000000>;
interrupt-parent = <&mb_intc>;
clocks {
i2cclk: i2cclk {
compatible = "fixed-clock";
clock-frequency = <50000000>;
#clock-cells = <0>;
};
apbclk: apbclk {
compatible = "fixed-clock";
clock-frequency = <50000000>;
#clock-cells = <0>;
};
mmcclk: mmcclk {
compatible = "fixed-clock";
clock-frequency = <50000000>;
#clock-cells = <0>;
};
};
ethernet@0x18000 {
#interrupt-cells = <1>;
compatible = "snps,dwmac";
reg = < 0x18000 0x2000 >;
interrupts = < 4 >;
interrupt-names = "macirq";
phy-mode = "rgmii";
snps,pbl = < 32 >;
clocks = <&apbclk>;
clock-names = "stmmaceth";
};
ehci@0x40000 {
compatible = "generic-ehci";
reg = < 0x40000 0x100 >;
interrupts = < 8 >;
};
ohci@0x60000 {
compatible = "generic-ohci";
reg = < 0x60000 0x100 >;
interrupts = < 8 >;
};
/*
* According to DW Mobile Storage databook it is required
* to use "Hold Register" if card is enumerated in SDR12 or
* SDR25 modes.
*
* Utilization of "Hold Register" is already implemented via
* dw_mci_pltfm_prepare_command() which in its turn gets
* used through dw_mci_drv_data->prepare_command call-back.
* This call-back is used in Altera Socfpga platform and so
* we may reuse it saying that we're compatible with their
* "altr,socfpga-dw-mshc".
*
* Most probably "Hold Register" utilization is platform-
* independent requirement which means that single unified
* "snps,dw-mshc" should be enough for all users of DW MMC once
* dw_mci_pltfm_prepare_command() is used in generic platform
* code.
*/
mmc@0x15000 {
compatible = "altr,socfpga-dw-mshc";
reg = < 0x15000 0x400 >;
num-slots = < 1 >;
fifo-depth = < 16 >;
card-detect-delay = < 200 >;
clocks = <&apbclk>, <&mmcclk>;
clock-names = "biu", "ciu";
interrupts = < 7 >;
bus-width = < 4 >;
};
uart@0x20000 {
compatible = "snps,dw-apb-uart";
reg = <0x20000 0x100>;
clock-frequency = <33333333>;
interrupts = <17>;
baud = <115200>;
reg-shift = <2>;
reg-io-width = <4>;
};
uart@0x21000 {
compatible = "snps,dw-apb-uart";
reg = <0x21000 0x100>;
clock-frequency = <33333333>;
interrupts = <18>;
baud = <115200>;
reg-shift = <2>;
reg-io-width = <4>;
};
/* UART muxed with USB data port (ttyS3) */
uart@0x22000 {
compatible = "snps,dw-apb-uart";
reg = <0x22000 0x100>;
clock-frequency = <33333333>;
interrupts = <19>;
baud = <115200>;
reg-shift = <2>;
reg-io-width = <4>;
};
i2c@0x1d000 {
compatible = "snps,designware-i2c";
reg = <0x1d000 0x100>;
clock-frequency = <400000>;
clocks = <&i2cclk>;
interrupts = <14>;
};
i2c@0x1e000 {
compatible = "snps,designware-i2c";
reg = <0x1e000 0x100>;
clock-frequency = <400000>;
clocks = <&i2cclk>;
interrupts = <15>;
};
i2c@0x1f000 {
compatible = "snps,designware-i2c";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x1f000 0x100>;
clock-frequency = <400000>;
clocks = <&i2cclk>;
interrupts = <16>;
eeprom@0x54{
compatible = "24c01";
reg = <0x54>;
pagesize = <0x8>;
};
eeprom@0x57{
compatible = "24c04";
reg = <0x57>;
pagesize = <0x8>;
};
};
gpio0:gpio@13000 {
compatible = "snps,dw-apb-gpio";
reg = <0x13000 0x1000>;
#address-cells = <1>;
#size-cells = <0>;
gpio0_banka: gpio-controller@0 {
compatible = "snps,dw-apb-gpio-port";
gpio-controller;
#gpio-cells = <2>;
snps,nr-gpios = <32>;
reg = <0>;
};
gpio0_bankb: gpio-controller@1 {
compatible = "snps,dw-apb-gpio-port";
gpio-controller;
#gpio-cells = <2>;
snps,nr-gpios = <8>;
reg = <1>;
};
gpio0_bankc: gpio-controller@2 {
compatible = "snps,dw-apb-gpio-port";
gpio-controller;
#gpio-cells = <2>;
snps,nr-gpios = <8>;
reg = <2>;
};
};
gpio1:gpio@14000 {
compatible = "snps,dw-apb-gpio";
reg = <0x14000 0x1000>;
#address-cells = <1>;
#size-cells = <0>;
gpio1_banka: gpio-controller@0 {
compatible = "snps,dw-apb-gpio-port";
gpio-controller;
#gpio-cells = <2>;
snps,nr-gpios = <30>;
reg = <0>;
};
gpio1_bankb: gpio-controller@1 {
compatible = "snps,dw-apb-gpio-port";
gpio-controller;
#gpio-cells = <2>;
snps,nr-gpios = <10>;
reg = <1>;
};
gpio1_bankc: gpio-controller@2 {
compatible = "snps,dw-apb-gpio-port";
gpio-controller;
#gpio-cells = <2>;
snps,nr-gpios = <8>;
reg = <2>;
};
};
};
};

71
target/linux/arc770/dts/nsim_700.dts

@ -0,0 +1,71 @@
/*
* Copyright (C) 2012 Synopsys, Inc. (www.synopsys.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.
*/
/dts-v1/;
/include/ "skeleton.dtsi"
/ {
model = "Synopsys ARC770 nSIM simulator";
compatible = "snps,nsim";
clock-frequency = <80000000>; /* 80 MHZ */
#address-cells = <1>;
#size-cells = <1>;
interrupt-parent = <&intc>;
chosen {
bootargs = "earlycon=arc_uart,mmio32,0xc0fc1000,115200n8 console=ttyARC0,115200n8";
};
aliases {
serial0 = &arcuart0;
};
fpga {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
/* child and parent address space 1:1 mapped */
ranges;
intc: interrupt-controller {
compatible = "snps,arc700-intc";
interrupt-controller;
#interrupt-cells = <1>;
};
arcuart0: serial@c0fc1000 {
compatible = "snps,arc-uart";
reg = <0xc0fc1000 0x100>;
interrupts = <5>;
clock-frequency = <80000000>;
current-speed = <115200>;
status = "okay";
};
ethernet@c0fc2000 {
compatible = "snps,arc-emac";
reg = <0xc0fc2000 0x3c>;
interrupts = <6>;
mac-address = [ 00 11 22 33 44 55 ];
clock-frequency = <80000000>;
max-speed = <100>;
phy = <&phy0>;
#address-cells = <1>;
#size-cells = <0>;
phy0: ethernet-phy@0 {
reg = <1>;
};
};
arcpmu0: pmu {
compatible = "snps,arc700-pct";
};
};
};

37
target/linux/arc770/dts/skeleton.dtsi

@ -0,0 +1,37 @@
/*
* Copyright (C) 2012 Synopsys, Inc. (www.synopsys.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.
*/
/*
* Skeleton device tree; the bare minimum needed to boot; just include and
* add a compatible value.
*/
/ {
compatible = "snps,arc";
clock-frequency = <80000000>; /* 80 MHZ */
#address-cells = <1>;
#size-cells = <1>;
chosen { };
aliases { };
cpus {
#address-cells = <1>;
#size-cells = <0>;
cpu@0 {
device_type = "cpu";
compatible = "snps,arc770d";
reg = <0>;
};
};
memory {
device_type = "memory";
reg = <0x00000000 0x10000000>; /* 256M */
};
};

16
target/linux/arc770/generic/profiles/00-default.mk

@ -0,0 +1,16 @@
#
# Copyright (C) 2015 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
define Profile/Default
NAME:=Default Profile (all drivers)
PACKAGES:= kmod-usb-core kmod-usb-ohci kmod-usb2 kmod-mmc kmod-sdhci
endef
define Profile/Default/Description
Default package set compatible with most boards.
endef
$(eval $(call Profile,Default))

15
target/linux/arc770/generic/profiles/01-minimal.mk

@ -0,0 +1,15 @@
#
# Copyright (C) 2015 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
define Profile/Minimal
NAME:=Minimal Profile (no drivers)
endef
define Profile/Minimal/Description
Minimal package set compatible with most boards.
endef
$(eval $(call Profile,Minimal))

16
target/linux/arc770/generic/profiles/02-axs101.mk

@ -0,0 +1,16 @@
#
# Copyright (C) 2015 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
define Profile/axs101
NAME:=Synopsys DesignWare AXS101
PACKAGES:= kmod-usb-core kmod-usb-ohci kmod-usb2 kmod-mmc kmod-sdhci
endef
define Profile/axs101/Description
Package set compatible with hardware using Synopsys DesignWare AXS101 boards.
endef
$(eval $(call Profile,axs101))

15
target/linux/arc770/generic/profiles/03-nsim_700.mk

@ -0,0 +1,15 @@
#
# Copyright (C) 2015 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
define Profile/nsim_700
NAME:=Synopsys nSIM
endef
define Profile/nsim_700/Description
Package set compatible with hardware using Synopsys nSIM 700 boards.
endef
$(eval $(call Profile,nsim_700))

8
target/linux/arc770/generic/target.mk

@ -0,0 +1,8 @@
BOARDNAME:=Generic
FEATURES += ramdisk usb
define Target/Description
Build firmware images for generic ARC 770D based boards.
endef

40
target/linux/arc770/image/Makefile

@ -0,0 +1,40 @@
#
# Copyright (C) 2015 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/image.mk
define Build/patch-dtb
$(call Image/BuildDTB,../dts/$(DEVICE_DTS).dts,$@.dtb)
$(STAGING_DIR_HOST)/bin/patch-dtb $@ $@.dtb
endef
# Shared device definition: applies to every defined device
define Device/Default
PROFILES = Default $$(DEVICE_PROFILE)
KERNEL_SUFFIX := .elf
KERNEL_INITRAMFS := kernel-bin | patch-dtb
KERNEL_INITRAMFS_NAME = $$(KERNEL_NAME)-initramfs.elf
DEVICE_PROFILE :=
DEVICE_DTS :=
endef
DEVICE_VARS += DEVICE_PROFILE DEVICE_DTS
define add_arc770
define Device/$(1)
DEVICE_PROFILE := $(1)
DEVICE_DTS := $(1)
endef
TARGET_DEVICES += $(1)
endef
# DesignWare AXS101
$(eval $(call add_arc770,axs101))
# nSIM with ARC770
$(eval $(call add_arc770,nsim_700))
$(eval $(call BuildImage))

36
target/linux/arc770/patches-4.3/0001-openwrt-arc-remove-dependency-on-DEVTMPFS.patch

@ -0,0 +1,36 @@
From 271777096a31e76b2ffd750bc44efde9656de857 Mon Sep 17 00:00:00 2001
From: Alexey Brodkin <abrodkin@synopsys.com>
Date: Thu, 13 Aug 2015 01:56:02 +0300
Subject: [PATCH] openwrt: arc - remove dependency on DEVTMPFS
OpenWRT builds initramfs so that it doesn't require DEVTMPFS so dropping
this dependency. That helps to escape 2 separate kernel rebuilds with
and without initramfs.
2 builds happen because OpenWRT first builds kernel and later modules.
When building entire kernel with simple "make" INITRAMFS sets to a real
value and so was triggering DEVTMPFS selection. Then when building only
modules with "make modules" command INITRAMFS is zeroed and so kernel
config was changing that lead to full kernel rebuild.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
---
arch/arc/Kconfig | 2 --
1 file changed, 2 deletions(-)
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index cf96ef2..f0c6d4c 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -11,8 +11,6 @@ config ARC
select BUILDTIME_EXTABLE_SORT
select COMMON_CLK
select CLONE_BACKWARDS
- # ARC Busybox based initramfs absolutely relies on DEVTMPFS for /dev
- select DEVTMPFS if !INITRAMFS_SOURCE=""
select GENERIC_ATOMIC64
select GENERIC_CLOCKEVENTS
select GENERIC_FIND_FIRST_BIT
--
2.4.3

91
target/linux/arc770/patches-4.3/0002-openwrt-arc-add-OWRTDTB-section.patch

@ -0,0 +1,91 @@
From 142abc9f7b8860638e39cf3850cf7ba328c26b42 Mon Sep 17 00:00:00 2001
From: Alexey Brodkin <abrodkin@synopsys.com>
Date: Sat, 31 Oct 2015 15:58:20 +0300
Subject: [PATCH] openwrt: arc - add OWRTDTB section
This change allows OpenWRT to patch resulting kernel binary with
external .dtb.
That allows us to re-use exactky the same vmlinux on different boards
given its ARC core configurations match (at least cache line sizes etc).
""patch-dtb" searches for ASCII "OWRTDTB:" strign and copies external
.dtb right after it, keeping the string in place.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
---
arch/arc/kernel/head.S | 10 ++++++++++
arch/arc/kernel/setup.c | 4 +++-
arch/arc/kernel/vmlinux.lds.S | 13 +++++++++++++
3 files changed, 26 insertions(+), 1 deletion(-)
diff --git a/arch/arc/kernel/head.S b/arch/arc/kernel/head.S
index 689dd86..51154ae 100644
--- a/arch/arc/kernel/head.S
+++ b/arch/arc/kernel/head.S
@@ -49,6 +49,16 @@
1:
.endm
+; Here "patch-dtb" will embed external .dtb
+; Note "patch-dtb" searches for ASCII "OWRTDTB:" string
+; and pastes .dtb right after it, hense the string precedes
+; __image_dtb symbol.
+ .section .owrt, "aw",@progbits
+ .ascii "OWRTDTB:"
+ENTRY(__image_dtb)
+ .fill 0x4000
+END(__image_dtb)
+
.section .init.text, "ax",@progbits
;----------------------------------------------------------------
diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
index c33e77c..96fbfd0 100644
--- a/arch/arc/kernel/setup.c
+++ b/arch/arc/kernel/setup.c
@@ -370,6 +370,8 @@ static inline int is_kernel(unsigned long addr)
return 0;
}
+extern struct boot_param_header __image_dtb;
+
void __init setup_arch(char **cmdline_p)
{
#ifdef CONFIG_ARC_UBOOT_SUPPORT
@@ -383,7 +385,7 @@ void __init setup_arch(char **cmdline_p)
#endif
{
/* No, so try the embedded one */
- machine_desc = setup_machine_fdt(__dtb_start);
+ machine_desc = setup_machine_fdt(&__image_dtb);
if (!machine_desc)
panic("Embedded DT invalid\n");
diff --git a/arch/arc/kernel/vmlinux.lds.S b/arch/arc/kernel/vmlinux.lds.S
index dd35bde..f309104 100644
--- a/arch/arc/kernel/vmlinux.lds.S
+++ b/arch/arc/kernel/vmlinux.lds.S
@@ -30,6 +30,19 @@ SECTIONS
. = CONFIG_LINUX_LINK_BASE;
+ /*
+ * In OpenWRT we want to patch built binary embedding .dtb of choice.
+ * This is implemented with "patch-dtb" utility which searches for
+ * "OWRTDTB:" string in first 16k of image and if it is found
+ * copies .dtb right after mentioned string.
+ *
+ * Note: "OWRTDTB:" won't be overwritten with .dtb, .dtb will follow it.
+ */
+ .owrt : {
+ *(.owrt)
+ . = ALIGN(PAGE_SIZE);
+ }
+
_int_vec_base_lds = .;
.vector : {
*(.vector)
--
2.4.3
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