usb-only rpi 3b+ (+UART foo)

[Per olof Ljungmark]

On 8/7/18 10:42 AM, Per olof Ljungmark wrote:
> On 8/7/18 12:09 AM, John Kennedy wrote:
>> On Mon, Aug 06, 2018 at 05:54:19PM +0200, Per olof Ljungmark wrote:
>>> Stops after loading kernel:
>>>
>>> Booting [/boot/kernel/kernel]
>>> Using DTB privided by EFI at 0x7ff8000.
>>> EFI frambuffer information:
>>> addr, size	0x3e330000, 0x8ca000
>>> dimensions	1920 x 1200
>>> stride		1920
>>> masks		0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000
>>>
>>> and then nothing
>>>
>>> Happens for me with all stock images after July 19.
>>
>> I just burned the FreeBSD-12.0-CURRENT-arm64-aarch64-RPI3-20180802-r337160.img
>> to an SD card and booted it up.
>>
>> The framebuffer information for my system is different (screen resolution?
>> 1024 x 904 I think).  After that, it clears the screen and goes into the
>> kernel boot output that gets captured into /var/log/messages.
>>
> 
> Aha.
> 
> So , I can confirm r337160 *does* boot, but with the following
> differences from the July 19 snapshot:
> 
> - There is no output on the big HDMI connector after the above message
> - Booting only finishes if I do *not* attach the HDMI connector
> - There are no active LED's at the ethernet connector, but it actually
> works and finishes the boot *if* HDMI is disconnected
> 
> This is regardless of commenting out or not:
> 
> # Multiple console (serial+efi gop) enabled.
> # boot_multicons="YES"
> # boot_serial="YES"
> 
> dmesg at successful boot shows display set to 656x416, so is 1920 x 1200
> the problem then? Wish I had another less capable monitor sitting here.
> 
> Aug  7 08:26:26 generic kernel: fb0: <BCM2835 VT framebuffer driver> on
> simplebus0
> Aug  7 08:26:26 generic kernel: fbd0 on fb0
> Aug  7 08:26:26 generic kernel: VT: Replacing driver "efifb" with new "fb".
> Aug  7 08:26:26 generic kernel: random: harvesting attach, 8 bytes (4
> bits) from fbd0
> Aug  7 08:26:26 generic kernel: fb0: 656x416(656x416 at 0,0) 24bpp
> Aug  7 08:26:26 generic kernel: fb0: fbswap: 1, pitch 1968, base
> 0x3eb33000, screen_size 818688
> Aug  7 08:26:26 generic kernel: random: harvesting attach, 8 bytes (4
> bits) from fb0

Now I remembered that we have an older TV with HD (1024x768) resolution
and I can indeed report the the rpi3+ boots at that resolution makes it
point even more to a resolution problem.