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From: Mike Scott <usenet.16@scottsonline.org.uk.invalid>
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi2 bootcode.bin puzzle
Date: Mon, 31 Mar 2025 08:54:43 +0100
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On 29/03/2025 14:30, bp@www.zefox.net wrote:
> Mike Scott <usenet.16@scottsonline.org.uk.invalid> wrote:
>> On 29/03/2025 04:47, bp@www.zefox.net wrote:
>>> I've yet to figure out what the FreeBSD equivalent to cmdline.txt
>>> is. That might be the key to making your approach work.
>>
>> Fbsd 13.x on a pi4, booting off a usb disk:
>>
>> # cat /boot/msdos//config.txt
>> [all]
>> arm_64bit=1
>> dtparam=audio=on,i2c_arm=on,spi=on
>> dtoverlay=mmc
>> dtoverlay=disable-bt
>> device_tree_address=0x4000
>> kernel=u-boot.bin
>>
>> [pi4]
>> hdmi_safe=1
>> armstub=armstub8-gic.bin
>>
>>
>> At least, I assume that's the equivalent file. :-)
> 
> AIUI, config.txt sets up the Pi, cmdline.txt furnishes
> runtime arguments to the kernel when that kernel is
> linux. If this isn't true somebody please correct me!
> 

I've just looked at what's on mine:

root@kirk:/ # df /boot/msdos/
Filesystem             1K-blocks  Used Avail Capacity  Mounted on
/dev/msdosfs/MSDOSBOOT     51096 25084 26012    49%    /boot/msdos

root@kirk:/ # ls /boot/msdos/
EFI                             bcm2710-rpi-3-b-plus.dtb 
fixup.dat                       fixup_db.dat                    start4db.elf
LICENCE.broadcom                bcm2710-rpi-3-b.dtb 
fixup4.dat                      fixup_x.dat                     start4x.elf
README                          bcm2711-rpi-4-b.dtb 
fixup4cd.dat                    overlays                        start_cd.elf
armstub8-gic.bin                bootcode.bin 
fixup4db.dat                    start.elf                       start_db.elf
armstub8.bin                    config.txt 
fixup4x.dat                     start4.elf                      start_x.elf
bcm2710-rpi-2-b.dtb             dtb 
fixup_cd.dat                    start4cd.elf                    u-boot.bin


So I seem to be running with no cmdline.txt. Boots happily off the 
attached usb drive, no sdcard.

But I stand corrected.

> Thanks for writing,
> 
> bob prohaska
>   
>   


-- 
Mike Scott
Harlow, England