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Bug#749688: linux: add mips64 and mips64el support



New 'add mips64 support': I forgot to add mips64 and mips64el into
debian/config/defines

On Sat, Jun 7, 2014 at 9:00 AM, Yunqiang Su <wzssyqa@gmail.com> wrote:
> On Fri, Jun 6, 2014 at 10:47 AM, Ben Hutchings <ben@decadent.org.uk> wrote:
>> On Thu, 2014-06-05 at 17:31 +0800, Yunqiang Su wrote:
>>> On Mon, Jun 2, 2014 at 7:57 PM, Ben Hutchings <ben@decadent.org.uk> wrote:
>> [...]
>>> >> diff -Nru linux-3.15~rc7/debian/config/mips64/defines linux-3.15~rc7/debian/config/mips64/defines
>>> >> --- linux-3.15~rc7/debian/config/mips64/defines 1970-01-01 00:00:00.000000000 +0000
>>> >> +++ linux-3.15~rc7/debian/config/mips64/defines 2014-05-29 00:26:03.000000000 +0000
>>> >> @@ -0,0 +1,50 @@
>>> >> +[base]
>>> >> +flavours:
>>> >> + r4k-ip22
>>> >> + r5k-ip32
>>> >> + sb1-bcm91250a
>>> >> + 5kc-malta
>>> >> + octeon
>>> >
>>> > I don't think we should build such a large number of flavours for a new
>>> > architecture.  Most of those machines are obsolete by now.
>>>
>>> Which one do you think to be kept?
>>> sb1-bcm91250a and octeon ?
>>
>> That seems sensible - those would cover all of Debian's own MIPS
>> hardware that can run big-endian.
>
> For mips64(eb), only these 2 flavors are kept.
>
>>
>> [...]
>>> >> diff -Nru linux-3.15~rc7/debian/config/mipsel/defines linux-3.15~rc7/debian/config/mipsel/defines
>>> >> --- linux-3.15~rc7/debian/config/mipsel/defines 2014-05-06 09:37:03.000000000 +0000
>>> >> +++ linux-3.15~rc7/debian/config/mipsel/defines 2014-05-29 00:27:04.000000000 +0000
>>> >
>>> > This patch does a little more than the subject says!
>>> >
>>> >> @@ -6,6 +6,7 @@
>>> >>   loongson-2e
>>> >>   loongson-2f
>>> >>   loongson-3
>>> >> + octeon
>>> >
>>> > Is it useful to run Octeon on little-endian mode?
>>>
>>> I have not very clear for mipsel while we have mips64el only now.
>>> Maybe we should keep octeon in mips64el while not in mipsel
>>
>> OK.
>>
>>> > [...]
>>> >> diff -Nru linux-3.15~rc7/debian/installer/mips64/modules/mips64/btrfs-modules linux-3.15~rc7/debian/installer/mips64/modules/mips64/btrfs-modules
>>> >> --- linux-3.15~rc7/debian/installer/mips64/modules/mips64/btrfs-modules 1970-01-01 00:00:00.000000000 +0000
>>> >> +++ linux-3.15~rc7/debian/installer/mips64/modules/mips64/btrfs-modules 2014-05-29 02:20:50.000000000 +0000
>>> >> @@ -0,0 +1 @@
>>> >> +#include <btrfs-modules>
>>> > [...]
>>> >
>>> > All the installer modules configuration files should be copied *by
>>> > reference* from mips or mipsel, either using a relative #include or a
>>> > directory symlink.
>>> >
>>>
>>> OK, I will link them, while diff (debdiff) treats them as normal file.
>>
>> That's true, but if you check out the source using svn or git-svn you
>> can make a diff that shows symlinks.
>>
>> git-svn would be best, as you could then split your changes up into
>> multiple patches:
>>
>> 1. Move common MIPS kernel config files to kernelarch-mips
>> 2. Add kernel config files for mips64/mips64el
>> 3. Add installer config files to mips64/mips64el
>>
>>> the dsc file is here:
>>> http://mips.wicp.net:9998/mips2/temp/
>>
>> Looking at the new patch:
>>
>>> --- linux-3.15~rc8/debian/config/defines        2014-05-14 15:41:05.000000000 +0000
>>> +++ linux-3.15~rc8/debian/config/defines        2014-06-05 06:23:54.000000000 +0000
>>> @@ -14,6 +14,8 @@
>>>   m68k
>>>   mips
>>>   mipsel
>>> + mips64
>>> + mips64el
>>>   or1k
>>>   powerpc
>>>   powerpcspe
>>> @@ -25,7 +27,7 @@
>>>   sparc
>>>   sparc64
>>>   x32
>>> -compiler: gcc-4.8
>>> +compiler: gcc-4.9
>>>  featuresets:
>>>   none
>>>   rt
>>
>> This is the default setting for all architectures; you must not change
>> it but instead override it in debian/config/mips64/defines and
>> debian/config/mips64el/defines.
>>
>> [...]
>>> diff -Nru linux-3.15~rc8/debian/config/mips/defines linux-3.15~rc8/debian/config/mips/defines
>>> --- linux-3.15~rc8/debian/config/mips/defines   2014-05-06 09:37:03.000000000 +0000
>>> +++ linux-3.15~rc8/debian/config/mips/defines   2014-06-05 05:43:07.000000000 +0000
>>> @@ -12,29 +12,47 @@
>>>  image-file: vmlinux
>>>
>>>  [image]
>>> -initramfs: false
>>> +initramfs: true
>>>  install-stem: vmlinux
>>>
>>>  [r4k-ip22_description]
>>
>> I don't think you can simply change this, as some of the boot loaders
>> used on old MIPS systems don't support an initramfs.  If it was that
>> simple, we would have done it already!
>>
>
> I changed them back now.
>
>> [...]
>>> --- linux-3.15~rc8/debian/installer/mips64el/package-list       1970-01-01 00:00:00.000000000 +0000
>>> +++ linux-3.15~rc8/debian/installer/mips64el/package-list       2014-06-05 05:59:58.000000000 +0000
>>> @@ -0,0 +1,11 @@
>>> +# This file is used to build up the control file. The kernel version and
>>> +# "-di" are appended to the package names. Section can be left out. So can
>>> +# architecture, which is derived from the files in the modules directory.
>>> +# It overwrites specifications from /usr/share/kernel-wedge/package-list.
>>> +#
>>> +Package: kernel-image
>>> +Provides_sb1-bcm91250a: ata-modules, ext2-modules, ext3-modules, ext4-modules, rtc-modules
>>> +Provides_5kc-malta: ata-modules, ext2-modules, ext3-modules, ext4-modules, rtc-modules
>>> +Provides_loongson-2e: ata-modules, ext2-modules, ext3-modules, ext4-modules, rtc-modules
>>> +Provides_loongson-2f: ata-modules, ext2-modules, ext3-modules, ext4-modules, rtc-modules
>>> +Provides_loongson-3: ata-modules, ext2-modules, ext3-modules, ext4-modules, rtc-modules
>> [...]
>>
>> As all the kernel flavours have the same things built-in, you can write
>> a single 'Provides:' line instead.
>
> OK.
>
>>
>> *But* the mips64/mips64el kernels will always boot with an initramfs, so
>> the ATA drivers and ext4 can be built as modules.  I think the
>> configuration overrides that make them built-in on mips/mipsel should be
>> kept there and not moved into the common configuration in
>> kernelarch-mips.  You could do that as a later cleanup patch, though.
>>
>
> For now, I think that keeping all mips/mipsel/mips64/mips64el same is better.
> so, I didn't change this.
>
>> Ben.
>>
>> --
>> Ben Hutchings
>> You can't have everything.  Where would you put it?
>
>
>
> --
> Yunqiang Su



-- 
Yunqiang Su

Attachment: 0002-Add-kernel-config-files-for-mips64-mips64el.patch
Description: Binary data


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