Re: [Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Michael Schnell]

On 03/18/2016 05:59 PM, Alfred wrote:

Hello,
I would like to inform you that Lazarus / FPC runs smooth on an 
Odroid-C2 under aarch64 (arch linux).
Proof: 
https://drive.google.com/file/d/0B96fg3TpL5RDWnJiMUwyQ21hM00/view?usp=sharing

GREAT !!!

Many thanks for the good work !!!

+1 !

-Michael

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[Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Alfred]

Hello,

I would like to inform you that Lazarus / FPC runs smooth on an 
Odroid-C2 under aarch64 (arch linux).


Proof: 
https://drive.google.com/file/d/0B96fg3TpL5RDWnJiMUwyQ21hM00/view?usp=sharing


I hope that RPi3 will follow soon !

Many thanks for the good work !!!--
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Re: [Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Florian Klämpfl]

Am 04.03.2016 um 07:58 schrieb Alfred:
> Then, perhaps, the ODROID-C2 could be your toy for aarch64 !

It is even not available yet? At least not at a reliable store in germany as 
far as I know.

> 
> Especially the eMMC connector makes it very suitable for reliable embedded 
> (FPC) applications.
> As well as its 2Gbyte SDRAM and Gigabit Ethernet.

All this is not really needed for playing with fpc.


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Re: [Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Mark Morgan Lloyd]

Florian Klaempfl wrote:

Am 03.03.2016 um 14:29 schrieb Alfred:

Working !

Thanks very much.
I have now an aarch64 fpc(laz)up executable, compiled through Lazarus.

If a 64 bit RPi3 distro is available, I will report back !!


I ordered also one in the hope using it to play with fpc aarch64.
But currently it does not look good as it seems that it is not only a
matter of the kernel but also the firmware. At least I didn't unwrap
mine yet because of this, without aarch64 support I see no use for me in it.


So how's this set up: the same as Debian SPARC with a 64-bit kernel and 
32-bit userland?


--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]

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Re: [Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Michael Schnell]

On 03/03/2016 07:18 PM, Florian Klaempfl wrote:


I ordered also one in the hope using it to play with fpc aarch64.
But currently it does not look good as it seems that it is not only a
matter of the kernel but also the firmware. At least I didn't unwrap
mine yet because of this, without aarch64 support I see no use for me in it.
A friend of mine uses BeagleBone and he always upgrades the devices to a 
standard Debian distribution.


I don't see why this should not be possible / viable with RPI .

And I suppose there is an aarch64 Debian. (In any case it should be 
possible to build it (a time consuming process ;-) )


So this hold run on a RPI3 for testing purpose.

Supposedly some 64 Bit drivers for certain hardware on the RPI might be 
no yet available. but this should not hamper fpc / Lazarus testing .


-Michael

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[Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Alfred]

Then, perhaps, the ODROID-C2 could be your toy for aarch64 !

Especially the eMMC connector makes it very suitable for reliable 
embedded (FPC) applications.

As well as its 2Gbyte SDRAM and Gigabit Ethernet.
Arch has 64 bit ready: 
https://archlinuxarm.org/platforms/armv8/amlogic/odroid-c2


But, with the RPi3, you can reach a much wider audience.
Which is my goal with the Pi.



I ordered also one in the hope using it to play with fpc aarch64.
But currently it does not look good as it seems that it is not only a
matter of the kernel but also the firmware. At least I didn't unwrap
mine yet because of this, without aarch64 support I see no use for me 
in it.



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Re: [Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Florian Klaempfl]

Am 03.03.2016 um 14:29 schrieb Alfred:
> Working !
> 
> Thanks very much.
> I have now an aarch64 fpc(laz)up executable, compiled through Lazarus.
> 
> If a 64 bit RPi3 distro is available, I will report back !!

I ordered also one in the hope using it to play with fpc aarch64.
But currently it does not look good as it seems that it is not only a
matter of the kernel but also the firmware. At least I didn't unwrap
mine yet because of this, without aarch64 support I see no use for me in it.

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[Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Alfred]

Working !

Thanks very much.
I have now an aarch64 fpc(laz)up executable, compiled through Lazarus.

If a 64 bit RPi3 distro is available, I will report back !!



Fixed. I replaced a64 with aarch64 in the IDE.

Mattias




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Re: [Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Michael Schnell]

On 03/03/2016 12:33 PM, Bo Berglund wrote:
And they claim not so much is to be gained with 64 bit mode since RAM 
is just 1GB (currently). 
I suppose similar to X86-64, with aarch64 the speed advantage vs 32 bit 
is debatable.


Some applications that really do 64 bit calculation might get a lot faster

Some applications that use loops with a large code footprint might get 
slower, as the 64 bit code might be bigger and hence more cache loads 
might be necessary.


-Michael


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Re: [Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Mattias Gaertner]

On Thu, 03 Mar 2016 06:47:24 +
Alfred  wrote:

>[...]
> How to setup Lazarus to compile for Aarch64 ??
> Fpc does NOT know what to do with -Pa64.
> Fpc does know what to do with -Paarch64.

Fixed. I replaced a64 with aarch64 in the IDE.

Mattias

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[Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Alfred]

FYI.

All my RPi(2) FPC/Lazarus apps do run unchanged on the new RPi3, by just 
replacing the boot firmware with the latest firmware.


They were (cross-)compiled for ARMV7 hardfloat and run on Arch Linux.

And  boot is fast ... and ... my apps run FAST !!!
So, this makes the change towards the new RPi3 hardware a very easy one, 
at least for 32 bit apps.


Now we wait for 64 bit ... ;-)


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Re: [Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Maxim Ganetsky]

03.03.2016 09:47, Alfred пишет:
> However, the main question still stands:
> 
> How to setup Lazarus to compile for Aarch64 ??
> Fpc does NOT know what to do with -Pa64.
> Fpc does know what to do with -Paarch64.

Please create a bug report.

-- 
Best regards,
 Maxim Ganetsky  mailto:gan...@narod.ru

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Re: [Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Bo Berglund]

On Thu, 03 Mar 2016 10:53:43 +0100, Michael Schnell
 wrote:

>On 03/02/2016 05:09 PM, Michael Ring wrote:
>> AFAIK This is the default mode on RPi for now, same for ODroid C2, it 
>> also currently runs a64 cpu with a a32 kernel, 'real' 64bit support 
>> will come later.
>>
>So obviously the a64 hardware can run a32 code :-) .
>
>Hence I suppose an a64 Linux distribution will come with the ability to 
>run a32 user programs (but I did not yet read about this) .
>
That is what they say on the forum at least
And they claim not so much is to be gained with 64 bit mode since RAM
is just 1GB (currently).


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Bo Berglund
Developer in Sweden


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Re: [Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Michael Schnell]

On 03/02/2016 05:09 PM, Michael Ring wrote:
AFAIK This is the default mode on RPi for now, same for ODroid C2, it 
also currently runs a64 cpu with a a32 kernel, 'real' 64bit support 
will come later.



So obviously the a64 hardware can run a32 code :-) .

Hence I suppose an a64 Linux distribution will come with the ability to 
run a32 user programs (but I did not yet read about this) .


-Michael
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[Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Alfred]

For all RPi's I use Arch Linux.

However, at the moment, no easy Arch aarch64 distro available for RPi3.
URL: https://archlinuxarm.org/platforms/armv8/broadcom/raspberry-pi-3
Therefor, I used the general libraries to build the aarch64 
cross-compiler.

URL: https://archlinuxarm.org/platforms/armv8/generic.

But, we indeed all have to wait for a 64bit kernel.

For real (industrial) applications, i will use the ODroid C2 !
Its better than the RPi3 for my purposes.

However, the main question still stands:

How to setup Lazarus to compile for Aarch64 ??
Fpc does NOT know what to do with -Pa64.
Fpc does know what to do with -Paarch64.



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Re: [Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Bo Berglund]

On Wed, 02 Mar 2016 17:27:24 +0100, Michael Schnell
 wrote:

>On 03/02/2016 05:09 PM, Michael Ring wrote:
>> AFAIK This is the default mode on RPi for now, same for ODroid C2, it 
>> also currently runs a64 cpu with a a32 kernel, 'real' 64bit support 
>> will come later.
>>
>So Alfred will only be able to run 64 Bit Lazarus programs after 
>updating the OS to a 64 bit version.

I asked on the RPi forum but it appears thta a 64 bit Raspbian kernel
is a bit away from nos. See:
https://www.raspberrypi.org/forums/viewtopic.php?f=66=138385


-- 
Bo Berglund
Developer in Sweden


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Re: [Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Michael Schnell]

On 03/02/2016 05:09 PM, Michael Ring wrote:
AFAIK This is the default mode on RPi for now, same for ODroid C2, it 
also currently runs a64 cpu with a a32 kernel, 'real' 64bit support 
will come later.


So Alfred will only be able to run 64 Bit Lazarus programs after 
updating the OS to a 64 bit version.


-Michael
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Re: [Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Michael Ring]

AFAIK This is the default mode on RPi for now, same for ODroid C2, it 
also currently runs a64 cpu with a a32 kernel, 'real' 64bit support will 
come later.


Michael

Am 02.03.16 um 13:52 schrieb Michael Schnell:

On 03/01/2016 09:45 PM, Alfred wrote:

While preparing fpc(laz)up for my RPi3,  Choosing a64 as CPU target


I am exited to see that there is a very cheap testing platform for a64 
arch !


Question: can a64 hardware and Linux run a32 programs (like X64 
systems can run X32 programs) ?


-Michael


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Re: [Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Michael Schnell]

On 03/01/2016 09:45 PM, Alfred wrote:

While preparing fpc(laz)up for my RPi3,  Choosing a64 as CPU target


I am exited to see that there is a very cheap testing platform for a64 
arch !


Question: can a64 hardware and Linux run a32 programs (like X64 systems 
can run X32 programs) ?


-Michael
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Re: [Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Bo Berglund]

On Tue, 01 Mar 2016 20:45:11 +, Alfred  wrote:

>While preparing fpc(laz)up for my RPi3
Quick action! They are sold out now everywhere I looked...

-- 
Bo Berglund
Developer in Sweden


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[Lazarus] Aarch64 as CPU target for RPi3 with Linux as OS

[Alfred]

While preparing fpc(laz)up for my RPi3, I did encounter an error with 
Lazarus.


Choosing a64 as CPU target in Lazarus does not work on my system.
Manually (command line) choosing aarch64 as CPU target however, does 
work.


Am I doing something wrong ?--
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