[OE-core] [PATCH 4/4] recipes-kernel/linux: Add RISC-V support

[Alistair Francis]

On Thu, Jun 14, 2018 at 3:12 PM Bruce Ashfield <bruce.ashfield at gmail.com> wrote:
>
>
>
> On Thu, Jun 14, 2018 at 3:45 PM, Alistair Francis <alistair.francis at wdc.com> wrote:
>>
>> Signed-off-by: Alistair Francis <alistair.francis at wdc.com>
>> ---
>>  meta/recipes-kernel/linux/linux-yocto.inc     | 4 ++++
>>  meta/recipes-kernel/linux/linux-yocto_4.15.bb | 5 ++++-
>>  2 files changed, 8 insertions(+), 1 deletion(-)
>>
>> diff --git a/meta/recipes-kernel/linux/linux-yocto.inc b/meta/recipes-kernel/linux/linux-yocto.inc
>> index 95ec2a2b41..70a13cdd1e 100644
>> --- a/meta/recipes-kernel/linux/linux-yocto.inc
>> +++ b/meta/recipes-kernel/linux/linux-yocto.inc
>> @@ -26,6 +26,10 @@ DEPENDS_append_nios2 = " libgcc"
>>  KERNEL_CC_append_nios2 = " ${TOOLCHAIN_OPTIONS}"
>>  KERNEL_LD_append_nios2 = " ${TOOLCHAIN_OPTIONS}"
>>
>> +DEPENDS_append_riscv64 = " libgcc"
>> +KERNEL_CC_append_riscv64 = " ${TOOLCHAIN_OPTIONS} ${SECURITY_NOPIE_CFLAGS}"
>> +KERNEL_LD_append_riscv64 = " -no-pie"
>> +
>>  KERNEL_FEATURES_append_qemuall=" features/debug/printk.scc"
>>
>>  # A KMACHINE is the mapping of a yocto $MACHINE to what is built
>> diff --git a/meta/recipes-kernel/linux/linux-yocto_4.15.bb b/meta/recipes-kernel/linux/linux-yocto_4.15.bb
>> index 693670c613..4ea368a011 100644
>> --- a/meta/recipes-kernel/linux/linux-yocto_4.15.bb
>> +++ b/meta/recipes-kernel/linux/linux-yocto_4.15.bb
>> @@ -36,7 +36,10 @@ KCONF_BSP_AUDIT_LEVEL = "2"
>>
>>  KERNEL_DEVICETREE_qemuarm = "versatile-pb.dtb"
>>
>> -COMPATIBLE_MACHINE = "qemuarm|qemuarm64|qemux86|qemuppc|qemumips|qemumips64|qemux86-64"
>> +KBUILD_DEFCONFIG_qemuriscv64 = "defconfig"
>> +KCONFIG_MODE_qemuriscv64 = "--alldefconfig"
>
>
> This doesn't belong in linux-yocto.
>
> We use defined BSP and configuration fraagments, not in-tree defconfigs
>
> I'm happy to add a BSP definition to the kernel-cache, but this isn't the way to add configuration support for the linux-yocto trees

Hey Bruce,

I'm looking at this again as the 4.19 kernel now has full working
RISC-V support.

How can I add a BSP definition to the kernel-cache?

Also, what is the reason for not using the in-tree defconfigs?

Alistair

>
> Cheers,
>
> Bruce
>
>>
>> +
>> +COMPATIBLE_MACHINE = "qemuarm|qemuarm64|qemux86|qemuppc|qemumips|qemumips64|qemux86-64|qemurisc532|qemuriscv64"
>>
>>  # Functionality flags
>>  KERNEL_EXTRA_FEATURES ?= "features/netfilter/netfilter.scc"
>> --
>> 2.17.1
>>
>> --
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>
>
>
>
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