[OpenWrt-Devel] [PATCH 2/2 v4] linux: add support of Synopsys ARC770-based boards
Jonas Gorski
jogo at openwrt.org
Tue Nov 10 06:02:04 EST 2015
Hi Alexey,
On Sat, Nov 7, 2015 at 2:25 PM, Alexey Brodkin
<Alexey.Brodkin at synopsys.com> wrote:
> 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 at openwrt.org>
> Cc: Jo-Philipp Wich <jow at openwrt.org>
> Cc: Jonas Gorski <jogo at openwrt.org>
> Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com>
> ---
>
> Changes compared to v3:
> * Accomodate new KERNEL_INITRAMFS_NAME variable for building .elfs
> * Add and use "model" property in device tree description
> * Remove extra console from kernel command line
> * Use new buildsystem for resulting images
> * Nuked ARC-specific inittab, use default one instead
> * Linux kernel config is passed through "make kernel_oldconfig"
> * eth0 is now LAN instead of WAN
>
> Changes compared to v2:
> * Fixed copyright dates
> * Cleaned-up init scripts
>
> Changes compared to v1:
> * Switched to SoC-centered design. Now instead of common ARC700
> support we claim support of boards based on ARC770D.
> This allows to use the same one build of kernel binary for both
> boards.
>
> * Implemented run-time scripts that parse Device Tree compatible
> tag and according to it do configuration of serial port and network.
>
> * Implemented ability to patch in built Linux kernel external .dtb
>
> * Linux kernel switched from 4.1 to 4.3
>
> * Rebased on current master
>
> include/kernel.mk | 2 +
> target/linux/arc770/Makefile | 26 +++
> target/linux/arc770/base-files.mk | 3 +
> .../arc770/base-files/etc/uci-defaults/02_network | 23 +++
> target/linux/arc770/base-files/lib/arc.sh | 49 +++++
> .../base-files/lib/preinit/01_preinit_arc.sh | 9 +
> target/linux/arc770/config-4.3 | 179 ++++++++++++++++
> target/linux/arc770/dts/axc001.dtsi | 100 +++++++++
> target/linux/arc770/dts/axs101.dts | 22 ++
> target/linux/arc770/dts/axs10x_mb.dtsi | 224 +++++++++++++++++++++
> target/linux/arc770/dts/nsim_700.dts | 71 +++++++
> target/linux/arc770/dts/skeleton.dtsi | 37 ++++
> target/linux/arc770/generic/profiles/00-default.mk | 16 ++
> target/linux/arc770/generic/profiles/01-minimal.mk | 15 ++
> target/linux/arc770/generic/profiles/02-axs101.mk | 17 ++
> .../linux/arc770/generic/profiles/03-nsim_700.mk | 16 ++
> target/linux/arc770/generic/target.mk | 8 +
> target/linux/arc770/image/Makefile | 40 ++++
> ...openwrt-arc-remove-dependency-on-DEVTMPFS.patch | 36 ++++
> .../0002-openwrt-arc-add-OWRTDTB-section.patch | 91 +++++++++
> 20 files changed, 984 insertions(+)
> create mode 100644 target/linux/arc770/Makefile
> create mode 100644 target/linux/arc770/base-files.mk
> create mode 100644 target/linux/arc770/base-files/etc/uci-defaults/02_network
> create mode 100644 target/linux/arc770/base-files/lib/arc.sh
> create mode 100644 target/linux/arc770/base-files/lib/preinit/01_preinit_arc.sh
> create mode 100644 target/linux/arc770/config-4.3
> create mode 100644 target/linux/arc770/dts/axc001.dtsi
> create mode 100644 target/linux/arc770/dts/axs101.dts
> create mode 100644 target/linux/arc770/dts/axs10x_mb.dtsi
> create mode 100644 target/linux/arc770/dts/nsim_700.dts
> create mode 100644 target/linux/arc770/dts/skeleton.dtsi
> create mode 100644 target/linux/arc770/generic/profiles/00-default.mk
> create mode 100644 target/linux/arc770/generic/profiles/01-minimal.mk
> create mode 100644 target/linux/arc770/generic/profiles/02-axs101.mk
> create mode 100644 target/linux/arc770/generic/profiles/03-nsim_700.mk
> create mode 100644 target/linux/arc770/generic/target.mk
> create mode 100644 target/linux/arc770/image/Makefile
> create mode 100644 target/linux/arc770/patches-4.3/0001-openwrt-arc-remove-dependency-on-DEVTMPFS.patch
> create mode 100644 target/linux/arc770/patches-4.3/0002-openwrt-arc-add-OWRTDTB-section.patch
(snip)
> diff --git a/target/linux/arc770/base-files/lib/arc.sh b/target/linux/arc770/base-files/lib/arc.sh
> new file mode 100644
> index 0000000..17ce657
> --- /dev/null
> +++ b/target/linux/arc770/base-files/lib/arc.sh
> @@ -0,0 +1,49 @@
> +#!/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
> +
> + [ -e "/tmp/sysinfo/" ] || mkdir -p "/tmp/sysinfo/"
> +
> + model="$( cat /proc/device-tree/model )"
> +
> + # Extract just one "compatible" value out of "snps,axs101snps,arc-sdp"
> + # which is a concatenation of "snps,axs101" and "snps,arc-sdp".
> + if cat /proc/device-tree/compatible | grep -q "snps,arc-sdp"; then
> + board="arc-sdp";
> + fi
> +
> + if cat /proc/device-tree/compatible | grep -q "snps,nsim"; then
> + board="nsim";
> + fi
I guess I wasn't clear enough, the idea of using the model property is
so that you can then just do
case "$model" in
"Synopsys AXS101 Development Board";)
board="arc-sdp";
;;
"Synopsys ARC770 nSIM simulator")
board="nsim";
;;
esac
instead of grepping through compatible, which has the different
compatibles concatenated, thus
the potential of false positives.
> +
> + 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"
> +}
> +
(snip)
> diff --git a/target/linux/arc770/generic/profiles/02-axs101.mk b/target/linux/arc770/generic/profiles/02-axs101.mk
> new file mode 100644
> index 0000000..42effd2
> --- /dev/null
> +++ b/target/linux/arc770/generic/profiles/02-axs101.mk
> @@ -0,0 +1,17 @@
> +#
> +# 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
> + DTS := axs101
What's the point of th DTS variable? It's already defined for the
Device definition, and I don't see any code referencing it.
> +endef
> +
> +define Profile/axs101/Description
> + Package set compatible with hardware using Synopsys DesignWare AXS101 boards.
> +endef
> +$(eval $(call Profile,axs101))
> diff --git a/target/linux/arc770/generic/profiles/03-nsim_700.mk b/target/linux/arc770/generic/profiles/03-nsim_700.mk
> new file mode 100644
> index 0000000..c1ba459
> --- /dev/null
> +++ b/target/linux/arc770/generic/profiles/03-nsim_700.mk
> @@ -0,0 +1,16 @@
> +#
> +# Copyright (C) 2015 OpenWrt.org
> +#
> +# This is free software, licensed under the GNU General Public License v2.
> +# See /LICENSE for more information.
> +#
> +
> +define Profile/nsim_700
> + NAME:=Synopsys nSIM
> + DTS := nsim_700
Same here.
> +endef
> +
> +define Profile/nsim_700/Description
> + Package set compatible with hardware using Synopsys nSIM 700 boards.
> +endef
> +$(eval $(call Profile,nsim_700))
Jonas
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