[OpenWrt-Devel] [PATCH 2/2 v3] linux: add support of Synopsys ARC770-based boards
Felix Fietkau
nbd at openwrt.org
Tue Nov 3 02:43:01 EST 2015
On 2015-11-03 00:27, Alexey Brodkin 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>
> Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com>
> ---
>
> 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/Config.in | 9 +
> target/linux/arc770/Makefile | 26 +++
> target/linux/arc770/base-files/etc/inittab | 4 +
> .../arc770/base-files/etc/uci-defaults/02_network | 23 +++
> target/linux/arc770/base-files/lib/arc.sh | 76 +++++++
> .../base-files/lib/preinit/01_preinit_arc.sh | 10 +
> target/linux/arc770/config-4.3 | 142 +++++++++++++
> target/linux/arc770/dts/axc001.dtsi | 100 +++++++++
> target/linux/arc770/dts/axs101.dts | 21 ++
> target/linux/arc770/dts/axs10x_mb.dtsi | 224 +++++++++++++++++++++
> target/linux/arc770/dts/nsim_700.dts | 70 +++++++
> 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 | 42 ++++
> ...openwrt-arc-remove-dependency-on-DEVTMPFS.patch | 36 ++++
> .../0002-openwrt-arc-add-OWRTDTB-section.patch | 91 +++++++++
> 21 files changed, 985 insertions(+)
> create mode 100644 target/linux/arc770/Makefile
> create mode 100644 target/linux/arc770/base-files/etc/inittab
> 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
>
> diff --git a/include/kernel.mk b/include/kernel.mk
> index 6a613fe..878a366 100644
> --- a/include/kernel.mk
> +++ b/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 ))
> diff --git a/target/Config.in b/target/Config.in
> index baae8d6..571b06e 100644
> --- a/target/Config.in
> +++ b/target/Config.in
> @@ -100,6 +100,13 @@ config aarch64_be
> select BIG_ENDIAN
> bool
>
> +config arc
> + bool
> +
> +config arceb
> + select BIG_ENDIAN
> + bool
> +
> config arm
> bool
>
> @@ -179,6 +186,8 @@ config ARCH
> string
> default "aarch64" if aarch64
> default "aarch64_be" if aarch64_be
> + default "arc" if arc
> + default "arceb" if arceb
> default "arm" if arm
> default "armeb" if armeb
> default "i386" if i386
Minor nitpick: The above parts should be folded into the previous patch.
> diff --git a/target/linux/arc770/config-4.3 b/target/linux/arc770/config-4.3
> new file mode 100644
> index 0000000..aba6908
> --- /dev/null
> +++ b/target/linux/arc770/config-4.3
> @@ -0,0 +1,142 @@
> +#
> +# ARC Architecture Configuration
> +#
> +CONFIG_ARC=y
> +
[...]
Please run make kernel_oldconfig to refresh the target kernel config.
This file is not meant to be hand-written. If you want to make changes
to it, you can use make kernel_menuconfig.
> diff --git a/target/linux/arc770/image/Makefile b/target/linux/arc770/image/Makefile
> --- /dev/null
> +++ b/target/linux/arc770/image/Makefile
> @@ -0,0 +1,42 @@
> +#
> +# 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 $(INCLUDE_DIR)/image.mk
> +
> +Image/Build/Initramfs=$(call Image/Build/Profile/$(PROFILE),initramfs)
> +
> +# $(1), lowercase board name like "axs101"
> +# $(2), DTS filename without .dts extension
> +# $(3), optional filename suffix, e.g. "-initramfs"
> +define PatchKernelDtb
> + cp $(KDIR)/vmlinux$(3).elf $(KDIR)/vmlinux-$(1)$(3).elf
> + $(LINUX_DIR)/scripts/dtc/dtc -O dtb -o $(KDIR)/$(2).dtb ../dts/$(2).dts
> + $(STAGING_DIR_HOST)/bin/patch-dtb $(KDIR)/vmlinux-$(1)$(3).elf $(KDIR)/$(2).dtb
> +endef
> +
> +# $(1), lowercase board name
> +# $(2), DTS filename without .dts extension
> +# $(3), optional filename suffix, e.g. "-initramfs"
> +MkImageDtb=$(call PatchKernelDtb,$(1),$(2),$(3))
> +
> +# $(1), squashfs/initramfs
> +# $(2), lowercase board name
> +# $(3), DTS filename without .dts extension
> +BuildFirmware/OF/initramfs=$(call MkImageDtb,$(2),$(3),-initramfs)
> +
> +BuildFirmware/axs101/initramfs=$(call BuildFirmware/OF/initramfs,$(1),axs101,axs101)
> +BuildFirmware/nsim_700/initramfs=$(call BuildFirmware/OF/initramfs,$(1),nsim_700,nsim_700)
> +
> +Image/Build/Profile/axs101=$(call BuildFirmware/axs101/$(1),$(1))
> +Image/Build/Profile/nsim_700=$(call BuildFirmware/nsim_700/$(1),$(1))
> +
> +define Image/Build/Profile/Default
> + $(call Image/Build/Profile/axs101,$(1))
> + $(call Image/Build/Profile/nsim_700,$(1))
> +endef
> +
> +$(eval $(call BuildImage))
Please use the new image building code instead. You can find examples in
the bcm53xx image Makefile.
- Felix
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