There is a RPi4 on the wild

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pik33
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There is a RPi4 on the wild

Postby pik33 » Mon Jun 24, 2019 6:19 am

https://www.raspberrypi.org/blog/raspbe ... w-from-35/

The question is... how much work and time will it get to port Ultibo to this new board...
pjde
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Re: There is a RPi4 on the wild

Postby pjde » Mon Jun 24, 2019 6:48 am

Dual 4K HDMI displays.

Thats impressive.

Paul
pik33
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Re: There is a RPi4 on the wild

Postby pik33 » Mon Jun 24, 2019 8:04 am

I ordered the board. They have them in stock so it can arrive tomorrow. They still didn't make a link to the new OS.
Gavinmc42
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Re: There is a RPi4 on the wild

Postby Gavinmc42 » Mon Jun 24, 2019 8:07 am

The question is... how much work and time will it get to port Ultibo to this new board...

And can we get Ultibo into that 4Mb EEPROM second stage bootloader? :lol:

VC6 :o not even a VC5 and it does Vulkan, that will be really interesting.
In case anyone has forgotten :D
https://github.com/BeRo1985/pasvulkan
Did Pi4 just go mainstream graphics?

I did not even bother ordering as I expected them to be out of stock already :lol:
hansotten
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Re: There is a RPi4 on the wild

Postby hansotten » Mon Jun 24, 2019 10:12 am

https://www.element14.com/community/doc ... ifications

video interview tells a lot more than in the press release. Though GPIO connector is identical, it now has 4 UART or 4 SPI e.g.

Not much info on this new SOC and new other IC's yet, will take some reverse engineering of the Linux drivers effort
And there is already documentation! https://www.raspberrypi.org/documentati ... /README.md
hippy
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Re: There is a RPi4 on the wild

Postby hippy » Mon Jun 24, 2019 1:48 pm

Gavinmc42 wrote:
And can we get Ultibo into that 4Mb EEPROM second stage bootloader? :lol:

I am not sure it would be easy because that is almost certainly Videocore Assembler which runs only in the GPU.

But not being easy doesn't preclude the notion of some sort of chained or staged bootloader which can load Eprom contents to the ARM cores.

It appears that simply putting "recovery.bin" on an SD Card and powering-up with that will copy it to the Eeprom, so it should be pretty easy to try it, see what can be done. It would be worth checking to see what write/erase lifetime the Eprom has before doing a lot of updating.

I also noted that someone (Elektor?) said it had OTG support on the USB-C. I don't know how true that is but, if it does, -- it does, confirmed on forum -- it should be possible to boot it as a Gadget, load code that way, which can then program the Eprom.

The on-board Eprom, plus the additional UARTs (six in total) is what most appeals to me about the Pi 4.
Last edited by hippy on Mon Jun 24, 2019 2:02 pm, edited 1 time in total.
hippy
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Re: There is a RPi4 on the wild

Postby hippy » Mon Jun 24, 2019 1:56 pm

pjde wrote:Dual 4K HDMI displays.

Thats impressive.

I am in two minds about that. On one hand there's the 'wow factor', it's something one doesn't usually see, it sets it ahead of the competition but, on the other, it is not much more than 'DMA' repeatedly churning out a frame buffer.
pik33
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Re: There is a RPi4 on the wild

Postby pik33 » Mon Jun 24, 2019 3:37 pm

The memory in RPi3 was too slow to display 4k@60fps. Even RPi4 cannot do this on both outputs. The limiting factor is the memory speed. 4k is 8 MPixels = 32 MBytes At 60 fps you need 1.92 GB/s (!)
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Ultibo
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Re: There is a RPi4 on the wild

Postby Ultibo » Tue Jun 25, 2019 12:16 am

Wow, that's a quick way to change everyone's plans.

New Pi 4, nine months earlier than expected and a radical redesign of almost everything, we have some thoughts about this and the decisions made but we'll wait to see where the discussion goes before commenting further.

We've created a sticky post to keep everyone up to date with progress on supporting the new board in Ultibo.
Ultibo.org | Make something amazing
https://ultibo.org
Gavinmc42
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Re: There is a RPi4 on the wild

Postby Gavinmc42 » Tue Jul 02, 2019 7:23 am

The Ultiboinstall script works on the Pi4.
Buster also finds the newer versions of Laz/FPC.
These install much faster too, everything installs faster :D .

Even the 4B1 is very usable, 10+ tabs open is still fine :o
Spent a day watching youtubes, no problems on 1280x1024 DVI monitor.
Get 2 screens, the 4B4 version and some decent USB3 mass storage and Ultibo native development on Pi4 will be much quicker.

USBboot compiled too, can a Pi4 USBboot via the USB-C port, perhaps one day :D
Test a Zero USBbooting first?
Very strange to be using a PC without fan noise.

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