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

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

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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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