Re: [9fans] Plan9 on Raspberry Pi 400?

[Skip Tavakkolian <skip.tavakkolian@gmail.com>]

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Here's the config.txt that I use for my rpi400 (it's on the file server and
handed to rpi via tftp):

start_file=start4cd.elf
fixup_file=fixup4cd.dat
cmdline=xxxxxxx/cmdline.txt
kernel=arm/9pi4
gpu_mem=16
hdmi_group=2
hdmi_mode=82
core_freq=250
enable_gic=1
device_tree=


On Fri, Jan 15, 2021 at 10:45 AM Mack Wallace <mackbw@mapinternet.com>
wrote:

> Dear Skip,
>
> That pushed the ball forward significantly, but I still have issues. (But
> thank you, every little advancement helps.) So with that flag, I was able
> to get Richard’s port to boot into Glenda’s account (showing acme, faces,
> stats, etc). However, I do not seem to have any USB; no mouse; nor
> keyboard. Stats is moving on the screen, so things are not too locked up. I
> did try rebooting with an external keyboard and another mouse. Still
> nothing. The external keyboard doesn’t respond to anything (no caps lock
> nor num lock.) One mouse is in the USB 2.0 port, another and the external
> keyboard are in the USB 3.0 ports.
>
> on boot, I see the following:
> usbxhci: 0x1106 0x3483 port 600000000 size 0x1000 irq0
> #u/usb/ep1.0: xhci port 0x0 irq 0
>
> The line before is #l for the network,
> The line after is the detection of the other three cores.
>
> The changing of the enable_gic=1 on the 9front image seemed to have to
> effect.
>
> Thanks again!
>
> Mack
>
>
> On Jan 14, 2021, at 8:15 PM, Skip Tavakkolian <skip.tavakkolian@gmail.com>
> wrote:
>
>
> I'm using a RPi400 with Richard's port. I'm netbooting without issues and
> up for days.  The only issue I had was forgetting to set 'enable_gic=1' as
> Richard instructed in the sources. Pi4 works ok without it, pi400 doesn't.
>
>
> On Thu, Jan 14, 2021, 3:39 PM Mack Wallace <mackbw@mapinternet.com> wrote:
>
>> Thank you for the reply Stuart, but no luck.
>> 
>> I did download Mr. Miller’s image. It would not boot at all until I
>> replaced the files that you mention, but the kernel in that image locks up
>> after detecting the fourth core of the CPU. However, from that failure I
>> learned that those files, (start_cd.elf, start4cd.elf, fixup_cd.dat,
>> fixup4cd.dat) are necessary for the Pi to boot, and that those with the
>> bootcode.bin and presumably, but it doesn’t seem to matter whether I use
>> bcm2711-rpi-4-b.dtb or bcm2711-rpi-400.dtb - the dtbs are vital to the
>> process. - and that all those files simply need to be copied into the fat
>> partition/boot directory.
>> 
>> So I burned another image (actually many, trying different SD cards, and
>> different configurations, older kernels, etc) and replaced all the files
>> I’ve mentioned with the ones from
>> https://github.com/raspberrypi/firmware/tree/master/boot (hopefully
>> that’s where I should get them). My most recent iteration just has the
>> single error repeated:
>> 
>> sdhc: read error intr 2008002 stat 1fff0000
>> 
>> This occurs many times. In the middle of these errors is
>> 
>> /dev/sdM0: BCM SD Host Controller 02 Version 10
>> 
>> then the error repeats itself over 50 times before printing out the lines
>> /dev/sdM0/data
>> bootargs is (tcp, tls, il, local!device)[]
>> 
>> At no time during this process is the keyboard or mouse responsive.
>> Though the mouse icon did become visible during the boot process.
>> 
>> I am hoping I am wrong, but I am thinking there is some sort of driver
>> issue. At the very least, checking what media there is to mount, or reading
>> the SD card. And then possibly for other things, but the former could be
>> gumming up the works for everything else.
>> 
>> On Jan 14, 2021, at 6:05 PM, Stuart Morrow <morrow.stuart@gmail.com>
>> wrote:
>> 
>> Try copying the .dtb *and* the start4 and fixup4.
>> 
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