Date: Thu, 16 Dec 2021 17:36:13 -0800 From: bob prohaska <fbsd@www.zefox.net> To: Mark Millard via freebsd-arm <freebsd-arm@freebsd.org> Subject: Re: Saving environment variables in u-boot Message-ID: <20211217013613.GA4452@www.zefox.net> In-Reply-To: <214132DD-A095-4349-BB81-B79CB8CF6B0C@yahoo.com> References: <20211216180704.GA4173@www.zefox.net> <214132DD-A095-4349-BB81-B79CB8CF6B0C@yahoo.com>
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On Thu, Dec 16, 2021 at 11:12:01AM -0800, Mark Millard via freebsd-arm wrote: > > > On 2021-Dec-16, at 10:07, bob prohaska <fbsd@www.zefox.net> wrote: > > > U-Boot> saveenv > > Saving Environment to FAT... Failed (1) > > I expect that is based on there being a microsd card with > a FAT file system on it, possibly containing the u-boot that > is in use. I doubt that it supports saving to a FAT on USB > media. Do you have an appropriate microsd card in place? > Yes, the microSD contains a dd of FreeBSD-13.0-RELEASE-arm64-aarch64-RPI.img The DOS partition is writeable, AFAIK. > But that was for the u-boot-rpi4 or u-boot-rpi-arm64 ports. > (They also later mentioned using "usb_pgood_delay=2000\0" > instead, a figure they found in a bunch of configrations.) > The Pi3 in question is capable of booting from solid-state USB storage without any microSD card, but fails to detect a mechanical disk. Which is the appropriate u-boot-rpi3 port to tamper with? I tried sysutils/u-boot-rpi3 as an upgrade but that simply froze. The u-boot from FreeBSD-13.0-RELEASE-arm64-aarch64-RPI.img finds the USB mechanical disk, but erratically. > So something somewhat analogous might help if you are willing > to build and use your own u-boot port variant. Obviously, that's a fraught enterprise at my skill level.... I'm still somewhat hazy on the actual boot sequence when chaining from microSD to USB. Indeed, it's unclear how or if u-boot plays a role in starting RasPiOS. The term u-boot isn't found on the Raspberry Pi doc website, and the Pi isn't mentioned in the Denx manuals. Those discoveries surprised me. Thanks for replying! bob prohaska
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