[OpenWrt-Devel] [PATCH] mpc85xx: Add T4240 sub-target

Helmut Schaa helmut.schaa at googlemail.com
Tue Apr 26 10:05:48 EDT 2016 

Hi John,

On Tue, Apr 26, 2016 at 3:33 PM, John Crispin <blogic at openwrt.org> wrote:
>
>
> On 26/04/2016 11:48, Helmut Schaa wrote:
>> The Freescale T4240 is a 12 core (24 threads) SoC.
>> Add a sub-target to the mpc85xx target to build images for the T4240
>> Reference Design Board.
>>
>> Currently CPU thread support is only available in 64bit kernel builds,
>> hence the sub-target uses the powerpc64 feature flag.
>>
>> Using musl libc doesn't compile properly on that sub-target yet, hence
>> we'd select glibc by default for T4240.
>
> why does it not compile ? do you get an actual compile error or does it
> simply not work as expected ?

Yep, it gives an actual compile error and I did not have time to look into
that yet. Hence, I'd like to go with glibc first ... uclibc seems to
work fine as
well, that's what we use in our internal tree for now.

>>
>> Networking is not yet supported as the required fman/bman/qman/dpaa
>> drivers are not yet included in mainline.
>>
>
> can you backport them ?

Yep, I've got a mostly working backport here but wanted to get the
basic platform
code included first.

Helmut

>
>
>
>> Signed-off-by: Helmut Schaa <helmut.schaa at googlemail.com>
>> ---
>>  config/Config-devel.in                    |  2 +-
>>  target/linux/mpc85xx/Makefile             |  2 +-
>>  target/linux/mpc85xx/image/Makefile       |  2 +-
>>  target/linux/mpc85xx/t4240/config-default | 82 +++++++++++++++++++++++++++++++
>>  target/linux/mpc85xx/t4240/target.mk      | 12 +++++
>>  toolchain/Config.in                       |  5 +-
>>  6 files changed, 100 insertions(+), 5 deletions(-)
>>  create mode 100644 target/linux/mpc85xx/t4240/config-default
>>  create mode 100644 target/linux/mpc85xx/t4240/target.mk
>>
>> diff --git a/config/Config-devel.in b/config/Config-devel.in
>> index 938f0b3..474b12f 100644
>> --- a/config/Config-devel.in
>> +++ b/config/Config-devel.in
>> @@ -106,7 +106,7 @@ menuconfig DEVEL
>>
>>       config EXTRA_OPTIMIZATION
>>               string "Additional compiler options" if DEVEL
>> -             default "-fno-caller-saves -fno-plt" if !CONFIG_EXTERNAL_TOOLCHAIN && !arc
>> +             default "-fno-caller-saves -fno-plt" if !CONFIG_EXTERNAL_TOOLCHAIN && !arc && !powerpc64
>>               default "-fno-caller-saves"
>>               help
>>                 Extra target-independent optimizations to use when building for the target.
>> diff --git a/target/linux/mpc85xx/Makefile b/target/linux/mpc85xx/Makefile
>> index a32be90..8ba739a 100644
>> --- a/target/linux/mpc85xx/Makefile
>> +++ b/target/linux/mpc85xx/Makefile
>> @@ -12,7 +12,7 @@ BOARDNAME:=Freescale MPC85xx
>>  CPU_TYPE:=8540
>>  FEATURES:=squashfs
>>  MAINTAINER:=Imre Kaloz <kaloz at openwrt.org>
>> -SUBTARGETS=generic p1020
>> +SUBTARGETS=generic p1020 t4240
>>
>>  KERNEL_PATCHVER:=4.4
>>
>> diff --git a/target/linux/mpc85xx/image/Makefile b/target/linux/mpc85xx/image/Makefile
>> index 25a9b07..82035eb 100644
>> --- a/target/linux/mpc85xx/image/Makefile
>> +++ b/target/linux/mpc85xx/image/Makefile
>> @@ -21,7 +21,7 @@ endef
>>
>>  zImage:=$(BIN_DIR)/$(IMG_PREFIX)-zImage
>>
>> -DTS_TARGETS = fsl/p1010rdb-pa tl-wdr4900-v1 fsl/p1020rdb
>> +DTS_TARGETS = fsl/p1010rdb-pa tl-wdr4900-v1 fsl/p1020rdb fsl/t4240rdb
>>
>>  define Image/BuildKernel
>>       cp $(KDIR)/zImage $(BIN_DIR)/$(IMG_PREFIX)-zImage
>> diff --git a/target/linux/mpc85xx/t4240/config-default b/target/linux/mpc85xx/t4240/config-default
>> new file mode 100644
>> index 0000000..18fd6d6
>> --- /dev/null
>> +++ b/target/linux/mpc85xx/t4240/config-default
>> @@ -0,0 +1,82 @@
>> +CONFIG_64BIT=y
>> +CONFIG_ALTIVEC=y
>> +CONFIG_ARCH_DMA_ADDR_T_64BIT=y
>> +CONFIG_ARCH_HAS_ILOG2_U64=y
>> +CONFIG_ARCH_HAS_TICK_BROADCAST=y
>> +CONFIG_ARCH_PHYS_ADDR_T_64BIT=y
>> +CONFIG_ARCH_SELECT_MEMORY_MODEL=y
>> +CONFIG_ARCH_SPARSEMEM_ENABLE=y
>> +CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
>> +CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION=y
>> +CONFIG_ARCH_WANT_OLD_COMPAT_IPC=y
>> +CONFIG_BLOCK_COMPAT=y
>> +CONFIG_CLKDEV_LOOKUP=y
>> +CONFIG_COMMON_CLK=y
>> +CONFIG_COMPAT=y
>> +CONFIG_COMPAT_BINFMT_ELF=y
>> +CONFIG_COMPAT_NETLINK_MESSAGES=y
>> +CONFIG_COMPAT_OLD_SIGACTION=y
>> +CONFIG_CORENET_GENERIC=y
>> +CONFIG_CPU_RMAP=y
>> +# CONFIG_E5500_CPU is not set
>> +CONFIG_E6500_CPU=y
>> +CONFIG_EPAPR_PARAVIRT=y
>> +CONFIG_FORCE_MAX_ZONEORDER=13
>> +# CONFIG_FSL_ULI1575 is not set
>> +CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
>> +# CONFIG_GENERIC_CPU is not set
>> +# CONFIG_HANGCHECK_TIMER is not set
>> +CONFIG_HAVE_CLK=y
>> +CONFIG_HAVE_CLK_PREPARE=y
>> +CONFIG_HAVE_PERF_EVENTS_NMI=y
>> +CONFIG_HAVE_RCU_TABLE_FREE=y
>> +CONFIG_HAVE_SETUP_PER_CPU_AREA=y
>> +CONFIG_HAVE_VIRT_CPU_ACCOUNTING=y
>> +CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
>> +# CONFIG_HUGETLBFS is not set
>> +CONFIG_IOMMU_SUPPORT=y
>> +CONFIG_KERNEL_START=0xc000000000000000
>> +# CONFIG_LIQUIDIO is not set
>> +CONFIG_LOCK_SPIN_ON_OWNER=y
>> +CONFIG_MUTEX_SPIN_ON_OWNER=y
>> +CONFIG_NEED_DMA_MAP_STATE=y
>> +CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
>> +CONFIG_NET_FLOW_LIMIT=y
>> +CONFIG_NR_CPUS=24
>> +# CONFIG_NUMA is not set
>> +CONFIG_PAGE_OFFSET=0xc000000000000000
>> +CONFIG_PCI_BUS_ADDR_T_64BIT=y
>> +CONFIG_PGTABLE_LEVELS=4
>> +CONFIG_PHYS_64BIT=y
>> +CONFIG_PHYS_ADDR_T_64BIT=y
>> +CONFIG_PPC64=y
>> +CONFIG_PPC_BOOK3E=y
>> +CONFIG_PPC_BOOK3E_64=y
>> +# CONFIG_PPC_BOOK3S_64 is not set
>> +CONFIG_PPC_E500MC=y
>> +CONFIG_PPC_EPAPR_HV_PIC=y
>> +CONFIG_PPC_FPU=y
>> +# CONFIG_PPC_I8259 is not set
>> +CONFIG_PPC_OF_BOOT_TRAMPOLINE=y
>> +# CONFIG_PPC_OF_PLATFORM_PCI is not set
>> +CONFIG_PTE_64BIT=y
>> +CONFIG_RATIONAL=y
>> +CONFIG_RCU_STALL_COMMON=y
>> +# CONFIG_RELOCATABLE is not set
>> +CONFIG_RFS_ACCEL=y
>> +CONFIG_RPS=y
>> +CONFIG_RWSEM_SPIN_ON_OWNER=y
>> +CONFIG_SMP=y
>> +CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
>> +CONFIG_SYSVIPC_COMPAT=y
>> +CONFIG_SYS_SUPPORTS_HUGETLBFS=y
>> +# CONFIG_THUNDER_NIC_BGX is not set
>> +# CONFIG_THUNDER_NIC_PF is not set
>> +# CONFIG_THUNDER_NIC_VF is not set
>> +CONFIG_TREE_RCU=y
>> +# CONFIG_U3_DART is not set
>> +# CONFIG_VIRT_CPU_ACCOUNTING_NATIVE is not set
>> +CONFIG_WORD_SIZE=64
>> +CONFIG_XPS=y
>> +CONFIG_ZLIB_DEFLATE=y
>> +CONFIG_ZONE_DMA32=y
>> diff --git a/target/linux/mpc85xx/t4240/target.mk b/target/linux/mpc85xx/t4240/target.mk
>> new file mode 100644
>> index 0000000..1b515ab
>> --- /dev/null
>> +++ b/target/linux/mpc85xx/t4240/target.mk
>> @@ -0,0 +1,12 @@
>> +BOARDNAME:=T4240
>> +FEATURES:=squashfs powerpc64
>> +MAINTAINER:=Helmut Schaa <helmut.schaa at googlemail.com>
>> +
>> +# Let the kernel figure out the correct usage of -m64 and -m32
>> +# for different parts.
>> +KERNEL_CC:=
>> +
>> +define Target/Description
>> +     Build firmware images for Freescale T4240 based boards.
>> +endef
>> +
>> diff --git a/toolchain/Config.in b/toolchain/Config.in
>> index 49c3461..8f27cfb 100644
>> --- a/toolchain/Config.in
>> +++ b/toolchain/Config.in
>> @@ -230,7 +230,7 @@ choice
>>       config LIBC_USE_MUSL
>>               select USE_MUSL
>>               bool "Use musl"
>> -             depends on !(arc)
>> +             depends on !(arc) && !(powerpc64)
>>
>>  endchoice
>>
>> @@ -257,6 +257,7 @@ config INSIGHT
>>         Enable if you want to build insight-gdb.
>>
>>  config USE_GLIBC
>> +     default y if !TOOLCHAINOPTS && !EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN && (powerpc64)
>>       bool
>>
>>  config USE_UCLIBC
>> @@ -264,7 +265,7 @@ config USE_UCLIBC
>>       bool
>>
>>  config USE_MUSL
>> -     default y if !TOOLCHAINOPTS && !EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN && !(arc)
>> +     default y if !TOOLCHAINOPTS && !EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN && !(arc) && !(powerpc64)
>>       bool
>>
>>  config USE_EXTERNAL_LIBC
>>
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