[OpenWrt-Devel] [LEDE-DEV] [PATCH] add support for OCTEON TX target

[Hauke Mehrtens]

Hi Tim,

sorry that I haven't reviewed this earlyer, but now I saw some problems,
see my comments inline.

Can you please create a follow up patch based on current master branch.

On 01/24/2018 12:15 AM, Tim Harvey wrote:
> The Cavium OCTEON TX is an ARM 64-bit SoC leveraging CPU cores and
> periperhals from the Cavium ThunderX SoC.
> 
> This initial support provides a 4.14 kernel and kernel+initramfs that is
> bootable on the Gateworks Newport GW630x as well as the Cavium sff8104
> reference board.
> 
> Signed-off-by: Tim Harvey <tharvey at gateworks.com>
> ---
>  target/linux/octeontx/Makefile                     |  27 +
>  .../octeontx/base-files/etc/board.d/02_network     |  18 +
>  target/linux/octeontx/base-files/etc/inittab       |   5 +
>  target/linux/octeontx/base-files/lib/octeontx.sh   |  43 ++
>  target/linux/octeontx/config-4.14                  | 670 +++++++++++++++++++++
>  target/linux/octeontx/image/Makefile               |  21 +
>  ...x-add-support-for-rgmii-internal-delay-mo.patch | 148 +++++
>  ...hunderx-workaround-BGX-TX-Underflow-issue.patch | 117 ++++
>  8 files changed, 1049 insertions(+)
>  create mode 100644 target/linux/octeontx/Makefile
>  create mode 100644 target/linux/octeontx/base-files/etc/board.d/02_network
>  create mode 100644 target/linux/octeontx/base-files/etc/inittab
>  create mode 100644 target/linux/octeontx/base-files/lib/octeontx.sh
>  create mode 100644 target/linux/octeontx/config-4.14
>  create mode 100644 target/linux/octeontx/image/Makefile
>  create mode 100644 target/linux/octeontx/patches-4.14/0001-net-thunderx-add-support-for-rgmii-internal-delay-mo.patch
>  create mode 100644 target/linux/octeontx/patches-4.14/0001-net-thunderx-workaround-BGX-TX-Underflow-issue.patch
> 
> diff --git a/target/linux/octeontx/Makefile b/target/linux/octeontx/Makefile
> new file mode 100644
> index 0000000..bbe8149
> --- /dev/null
> +++ b/target/linux/octeontx/Makefile
> @@ -0,0 +1,27 @@
> +#
> +# Copyright (C) 2018 OpenWrt.org
> +#
> +# This is free software, licensed under the GNU General Public License v2.
> +# See /LICENSE for more information.
> +#
> +include $(TOPDIR)/rules.mk
> +
> +ARCH:=aarch64
> +BOARD:=octeontx
> +BOARDNAME:=Octeon-TX
> +FEATURES:=targz pcie gpio rtc usb

I think you should define fpu here, but arm64 anyway has a fpu.

> +CFLAGS:=-Os -pipe -fno-caller-saves

You should not define CFLAGS for the toolchain as this will also leak
into other targets if they share the same toolchain.

Can you try to remove the CFLAGS setting if it still works?
The build system will then set it to "-Os -pipe -mcpu=generic"

> +
> +MAINTAINER:=Tim Harvey <tharvey at gateworks.com>
> +
> +KERNEL_PATCHVER:=4.14
> +
> +define Target/Description
> +	Build images for Octeon-TX CN80XX/CN81XX based boards
> +endef
> +
> +include $(INCLUDE_DIR)/target.mk
> +
> +KERNELNAME:=Image
> +
> +$(eval $(call BuildTarget))
....
> diff --git a/target/linux/octeontx/config-4.14 b/target/linux/octeontx/config-4.14
> new file mode 100644
> index 0000000..97d0cc6
> --- /dev/null
> +++ b/target/linux/octeontx/config-4.14
> @@ -0,0 +1,670 @@
.....
> +# CONFIG_CRYPTO_SHA512_ARM64 is not set
> +CONFIG_CRYPTO_SIMD=y
> +CONFIG_CRYPTO_WORKQUEUE=y
> +CONFIG_DCACHE_WORD_ACCESS=y
> +# CONFIG_DEBUG_ALIGN_RODATA is not set
> +# CONFIG_DEBUG_BLK_CGROUP is not set
> +CONFIG_DEBUG_INFO=y

Is this needed by default?

> +CONFIG_DEFAULT_IOSCHED="noop"
> +CONFIG_DEFAULT_NOOP=y
> +# CONFIG_DEVPORT is not set
> +CONFIG_DEVTMPFS=y
> +CONFIG_DEVTMPFS_MOUNT=y
> +CONFIG_DMADEVICES=y
> +CONFIG_DMA_CMA=y
> +CONFIG_DMA_ENGINE=y
> +# CONFIG_DMA_NOOP_OPS is not set
> +CONFIG_DMA_OF=y
> +CONFIG_DMA_SHARED_BUFFER=y
> +# CONFIG_DMA_VIRT_OPS is not set
> +CONFIG_DNS_RESOLVER=y
> +# CONFIG_DRM_LIB_RANDOM is not set
> +CONFIG_DTC=y
> +CONFIG_DT_IDLE_STATES=y
> +CONFIG_EDAC=y
> +# CONFIG_EDAC_DEBUG is not set
> +CONFIG_EDAC_LEGACY_SYSFS=y
> +CONFIG_EDAC_SUPPORT=y
> +CONFIG_EDAC_THUNDERX=y
> +# CONFIG_EDAC_XGENE is not set
> +CONFIG_EEPROM_AT24=y
> +# CONFIG_EVM is not set
> +CONFIG_EXT2_FS=y
> +CONFIG_EXT3_FS=y

Please activate ext2 and 3 support in ext4 instead.

> +# CONFIG_EXT3_FS_POSIX_ACL is not set
> +# CONFIG_EXT3_FS_SECURITY is not set
> +CONFIG_EXT4_FS=y
> +CONFIG_EXT4_FS_POSIX_ACL=y
> +# CONFIG_F2FS_CHECK_FS is not set
> +CONFIG_F2FS_FS=y
> +# CONFIG_F2FS_FS_SECURITY is not set
> +CONFIG_F2FS_FS_XATTR=y
> +CONFIG_F2FS_STAT_FS=y
...

You should run "make kernel_oldconfig" to refresh the configuration.

There is also something missing in this configuration or in the generic
one, see this error from the build bot:
http://phase1.builds.lede-project.org/builders/octeontx%2Fgeneric/builds/0/steps/kmods/logs/stdio

Please test compile it with this configuration:
CONFIG_TARGET_octeontx=y
CONFIG_TARGET_octeontx_Default=y
CONFIG_TARGET_BOARD="octeontx"
CONFIG_ALL_KMODS=y
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