Tiny Core Linux

Tiny Core Base => Raspberry Pi => Topic started by: curaga on February 02, 2015, 04:26:27 AM

Title: rPi 2 announced, quad core A7, 1GB RAM
Post by: curaga on February 02, 2015, 04:26:27 AM
http://www.raspberrypi.org/raspberry-pi-2-on-sale/

Hm, I might get one.
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: bmarkus on February 02, 2015, 05:23:03 AM
Finally they did it. Still it is behind the competition. Lower CPU frequency, lower specs CPU, lack of SATA. There are better choices. On the other hand ther is very large user base, a community with great projects. So I like it, it is not about performance only.

Tried to order one. Both element14 and RS rejects to deliver RPi to Hungary and redirects to local distributors. They expect availability this week. I preordered it :)
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: Franxoois on February 02, 2015, 05:29:13 AM
Great news !
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: meo on February 02, 2015, 07:46:46 AM
Hi guys!

That's what I call an upgrade!!! Have tried different ways to get my hands on one but no luck yet. I won't give up though.  It seems to have what I almost value most; stability! At least that's what is promised on the Rasberry.org site, and I quote: "Dom and Jonathan have spent thousands of hours working on the firmware and board support to make Raspberry Pi the most stable single board computer in the world." Sounds really promising.

Regards,
meo
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: bmarkus on February 02, 2015, 08:27:26 AM
Maybe you want to run Windows 10:

http://blogs.windows.com/buildingapps/2015/02/02/windows-10-coming-to-raspberry-pi-2/
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: KG-TinyCore on February 02, 2015, 11:02:34 AM
Amazing they kept this under wraps, but a pleasant morning surprise for sure. Just ordered one via Newark: http://www.newark.com/raspberry-pi-accessories (http://www.newark.com/raspberry-pi-accessories)  :)
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: beerstein on February 02, 2015, 12:24:13 PM
hi - I ordered one from the german GMBH. The online confirmation said: "two working days"
Now I am looking for the new modified raspian image.

bmarkus! - it is a lot of work to modify piCore 6.0 so it can be used with new model?
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: bmarkus on February 02, 2015, 12:29:02 PM
bmarkus! - it is a lot of work to modify piCore 6.0 so it can be used with new model?

Good question. They say it is compatible with old boards. If it is true, current image must work.

Hope I can have a board tomorrow. We will see.
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: Paul_123 on February 02, 2015, 01:04:17 PM
bmarkus! - it is a lot of work to modify piCore 6.0 so it can be used with new model?

Good question. They say it is compatible with old boards. If it is true, current image must work.

Hope I can have a board tomorrow. We will see.

Looking at Github, They have an updated bootloader and have bumped the kernel to 3.18.5.    There are 2 kernels in the get now.   kernel.img and kernel7.img.

My suspicion is that piCore 6.0 will work, but will need an upgrade to get the full benefit.


It would have been nice to know this was coming before I got my odroid-c1.   While the specs are off a bit, the development and support from rpi.org is much more than others.   Oh well, time to order a Pi-2
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: bmarkus on February 02, 2015, 01:09:47 PM
What is new in the latest 3.18.5+ kernel is Device Tree; boot loader now is using DT. I guess we can boot current image on the new hardware, but we must change kernel to 3.18.y to enjoy full benefits.
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: Paul_123 on February 02, 2015, 01:28:11 PM
What is new in the latest 3.18.5+ kernel is Device Tree; boot loader now is using DT. I guess we can boot current image on the new hardware, but we must change kernel to 3.18.y to enjoy full benefits.

I'm sure the bootloader will properly detect the boards.   It will be interesting from a comparability standpoint when/how to move from arm6 to arm7 binaries.   

I have my board ordered, so I'll be able to help out on the development / testing.
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: meo on February 02, 2015, 02:44:17 PM
Hi guys!

Have been fooling around with the latest cut of Raspbian today on a RPi B (not the B+) and it works really well. It seems to me that it's a bit faster than the previous cut of Raspbian. Just an eyeball, non scientific, observation when compiling the latest sources of the GO language. Might not be true but it surely seemed faster. Also waiting for my prepaid RPi 2 to arrive. Will be very interesting to see how it compares to the previous ones.

Regards,
meo

PS  The latest Raspbian 2015-01-31 at least works on older RPi's, that's for sure.  DS
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: meo on February 02, 2015, 03:01:15 PM
Just found something interesting on the net about RPi 2. Here is the link:

http://makezine.com/2015/02/02/raspberry-pi-2-first-look/
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: StanIv on February 02, 2015, 04:09:50 PM
What? Moor's law still in action?! :)
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: bmarkus on February 03, 2015, 01:21:47 AM
Interesting announcement:

Quote
Raspberry Pi 2 is available to buy today. Remember you'll need an updated NOOBS or Raspbian image including an ARMv7 kernel and modules from our downloads page. At launch, we are using the same ARMv6 Raspbian userland on both Raspberry Pi 1 and 2; over the next few months we will investigate whether we can obtain higher performance from regular ARMv7 Debian, or whether we can selectively replace a small number of libraries to get the best of both worlds. Now that we're using an ARMv7 core, we can also run Ubuntu.

So they are doing the same, starting to use the armv6 repo and update packages slowly to armv7
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: CentralWare on February 03, 2015, 04:41:51 AM
Has anyone ventured into the direction of the "Banana Pi" ?
I went to pick up a B+ yesterday but after seeing the B-Pi specs I held off.
http://www.bananapi.org/p/product.html

The B+ would have run me about $35 after tax (their B price tags locally are actually more than B+??)
The Banana on Amazon I think I saw listed for $45 and their free shipping over $35.

From what little reading I did do, it's claimed the B-Pi and the R-Pi are "almost alike" (functionality) save for the fact the the Banana has a singular SATA port (did not indicate, but am assuming SATA-I), 1GB DDR3 and GB ethernet, thus the board's a tad larger, all the while running on the AllWinner A20 chip and claims Raspbian runs fine under it*.
http://www.bananapi.org/2014/05/is-banana-pi-clone-of-raspberry-pi.html

Prior to the RPi2 announcement, this was the direction I was going to take.
http://www.amazon.com/Banana-Mini-Open-Source-Mainboard/dp/B00MWA5JKM/ref=aag_m_pw_dp?ie=UTF8&m=A11Z0YA88UDZFR

The GBe has me enthused for different reasons.  First, it's claimed the B+ is using usb2ether for their network interface, which to me is going to kill usb bandwidth; a serious problem if you're using usb storage or other high-traffic devices.  The BPi claims its own RealTek controller if memory serves.

Slightly dated:
http://hardware-libre.fr/2014/06/raspberry-vs-banana-hardware-duel/
I'm curious as to what the RPi2 specs will look like if the same comparison were done.

Please shed your thoughts between the Pi (B+), Pi2 and BPi, especially and most importantly from a TCL perspective.
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: bmarkus on February 03, 2015, 05:16:29 AM
centralware@

see http://forum.tinycorelinux.net/index.php/topic,17895.0.html

Statement valid for Banana Pi - BTW which has nothing to do with Raspberry Pi. Name is misleading on purpose to get higher media attention :( My sympathy goes for Odroid line.

armv6 and next armv7 port can be run on most of the ARM boards, key issue is booting. My personal preferences Raspberry Pi 2, Raspberry Pi, BeagleBone Black and Odroid, these are the boards I have or I have access.

Community contribution to get piCore running on other boards highly appreciated. I will try to help as much as I can.
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: CentralWare on February 03, 2015, 05:25:13 AM
@bmarkus: Thank you for the insight - and the assistance offer!
Looking at the B-Pi specs I knew this wouldn't be an "out of the box" project, but few of mine rarely are!  I even have the inkling of ripping a RISC/AtMel project with TC at the helm if I can strip the kernel enough to do so.  (My prototype has a whopping 8MB flash so I'm extremely limited for the init, but stubbornness tells me "It CAN be done!") :)
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: curaga on February 03, 2015, 05:31:44 AM
All rpis lack in USB, and indeed use ethernet over USB, making them completely unsuitable for any server use. Those with proper ethernet tend to be better, but you need to make sure they're well built and supported - odroid C1 for example has a proper 1Gbps ethernet, but it has such lacking software that it only works at 100Mbps and even there sporadically (second-hand info).

So it all depends on the use case. I'm getting a rpi2 mainly to play with the gpu, and perhaps to do a few digital signage projects, all something that does not use networking much or USB drives.
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: Paul_123 on February 03, 2015, 09:37:56 AM
All rpis lack in USB, and indeed use ethernet over USB, making them completely unsuitable for any server use. Those with proper ethernet tend to be better, but you need to make sure they're well built and supported - odroid C1 for example has a proper 1Gbps ethernet, but it has such lacking software that it only works at 100Mbps and even there sporadically (second-hand info).

So it all depends on the use case. I'm getting a rpi2 mainly to play with the gpu, and perhaps to do a few digital signage projects, all something that does not use networking much or USB drives.

They just patched the ethernet drivers for the OD-C1.  It now connects at Gigabit.   But this board is still in it's infancy stage.     Running the stock ubuntu image, the GB connection still resets occasionally, but my piCore image running on the OD-C1 has been pretty stable.  I'm working now to pare down the initrd to a more manageable Core size.

Bmarkus.......   any tips to figuring out what modules are required on the initrd?     Right now, I have everything built in, and lsmod doesn't list anything, but If I leave out most modules, it complete the boot after uncompressing the initrd.
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: bmarkus on February 03, 2015, 03:14:14 PM
My RPi 2 arrived to the local element14 partner, I will pick up in the next days. I will report first findings on Thursday or Friday.
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: bmarkus on February 03, 2015, 03:27:15 PM
Bmarkus.......   any tips to figuring out what modules are required on the initrd?     Right now, I have everything built in, and lsmod doesn't list anything, but If I leave out most modules, it complete the boot after uncompressing the initrd.

Hardware related:

- modules required for the hardware to work like SD card, Ethernet, USB, DMA,  RTC (if exists), video etc. drivers
- filesystem drivers to read FAT and Ext4/Ext3/Ext2 partitions

Tiny Core related:

- looopback driver
- squash fs driver
- zswap and compressed RAM

There are few others which are not needed for Core to work but used by several modules and not possible to add to a kernel module tcz, such as rfkill, basic encryption, generic libs, etc

Study modules in and module TCZ's of current piCore. However due to the different kernels and kernel configs there are minor differences.

When ready, let's make available a beta test version and start using it with openssh, wireless, cifs, audio, etc. We will see shortly if a module is missing. If you are in doubt, use modinfo command to see module dependencies. Also check dmesg for error messages on modules.
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: meo on February 05, 2015, 12:19:59 PM
Hi guys!

Got my Raspberry Pi 2 Model B today and it's really fast and stable as far as I can tell. Running Raspbian at the moment with some tweaks. A huge difference to the previous model.

Have fun,
meo
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: bmarkus on February 06, 2015, 01:32:13 AM
First impressions:

Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: bmarkus on February 08, 2015, 02:51:16 AM
Now piCore is running on RPi2 and other boards with the latest 3.18.6 kernel. piCore-6.1alpha2 images will be uploaded later today.
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: andyj on February 22, 2015, 02:01:28 PM
Just got my RPi 2. I need to build some modules for my USB display. Can we get a kernel tree, or will I need to build my own using the running config.gz? If so, how do I fix the "+" issue?
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: bmarkus on February 22, 2015, 03:08:25 PM
Just got my RPi 2. I need to build some modules for my USB display. Can we get a kernel tree, or will I need to build my own using the running config.gz? If so, how do I fix the "+" issue?

What do you mean kernel tree?
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: andyj on February 22, 2015, 03:34:43 PM
The directory the kernel was compiled in. I know it can be big. Then I could build my modules natively on the Pi. Otherwise I have to build the whole kernel from source. Not impossible, it just takes a while, and I'm still not sure how to fix the "+" problem.
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: bmarkus on February 22, 2015, 03:41:48 PM
Current alpha2 is based on 3.18.6 kernel. I will make alpha3 in a week hopefully with an updated kernel, not yet decided to go for 3.18.7 or 3.19.0. My advice to wait for next release.
Title: Re: rPi 2 announced, quad core A7, 1GB RAM
Post by: andyj on February 22, 2015, 04:05:00 PM
I noticed when trying to load alsa that there wasn't a alsa-modules-KERNEL for this version. I also noticed a modules tarball, is this DT related? For now we load modules the old-fashioned way? Not a big deal, as long as I know. It's been a while since a kernel was designated LTS, so maybe 3.18 will be it? Does that have any influence on the decision, or have there been serious gains in the hardware support in 3.19 to make going there worth it? FWIW the raspicam and libnfc extentions seem to work.