Re: Unable to boot Pi 3b+ UPDATED
- Reply: Mark Millard : "Re: Unable to boot Pi 3b+ UPDATED"
- In reply to: Mark Millard : "Re: Unable to boot Pi 3b+ UPDATED"
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Date: Fri, 18 Aug 2023 01:17:35 UTC
Mark Millard wrote on 2023-08-17 12:22: > On Aug 17, 2023, at 11:08, Peter G <list-freebsd-arm@box559.com> wrote: > >> Apologies for top posting, but now that I understand the problem better, most of the stuff below is not relevant. Here's the whole issue: >> >> Late last year there was a new hardware release of the Raspberry Pi 3B+ board. The PMIC chip was changed; more information is here: >> https://pip.raspberrypi.com/categories/797-pcn/documents/RP-003337-PC/Pi3B-Revision-9-PCN.pdf >> The new board is Rev. 1.4, a.k.a. a020d4. >> >> The FreeBSD image at >> http://ftp3.freebsd.org/pub/FreeBSD/releases/ISO-IMAGES/13.2/FreeBSD-13.2-RELEASE-arm64-aarch64-RPI.img.xz >> boots fine on the old Rev. 1.3 version of the board but it fails to boot on the Rev 1.4 version. I have tried it on more than one example of each version of the board. 1.3 boards boot fine, 1.4 boards fail to boot and flash the green LED in 4 long - 7 short pattern. >> >> Not sure what to do about this. Is it a known problem? Should I file a bug report? > > From the *.pdf document that you referenced: > > QUOTE > Software/Firmware Changes Required > This new product revision is supported in firmware versions from September 2021 onwards. > The firmware version . . . It can also be found for an image by running > strings /boot/start.elf | grep VC_BUILD > END QUOTE > > (The /boot/ path is not from FreeBSD, so replace > with a FreeBSD path. Also, start4.elf is of more > direct interest here.) > > Until the recent change in systuil/rpi-firmware , > FreeBSD simply used too old of an RPI* firmware > version (over 2 years old) to work for the RPi3B+ > Rev 1.4 (or later) parts. > > I'm not aware of FreeBSD re-releasing the likes of > a releng/X.Y with just updated RPi* firmware (or an > updated U-Boot since such is also available now). > > Any solution must involve replacing the older > firmware with newer firmware. But the port to > package builder is not done yet --and once it > is there is also distribution time after that > before the update will be available. > > One way to do that replacement now is to get the > material from the msdosfs for one of the snapshot > builds that I referenced: > > http://ftp3.freebsd.org/pub/FreeBSD/snapshots/ISO-IMAGES/14.0/FreeBSD-14.0-ALPHA1-arm64-aarch64-RPI-20230811-136fc495615f-264678.img.xz As you suggest, I tried substituting the msdos files from this 14.0 image into the 13.2-RELEASE image. First, I replaced all the files in the first (msdos) partition. That booted, but crashed when the kernel started, which caused it to reboot, and so on in loop. Next, I tried replacing only the start4.elf file, leaving the others alone. That didn't boot at all, returning to the now familiar 4 slow - 7 fast pattern of green LED flashes. Any thoughts on which files should be substituted for a successful boot? [...]