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by timg236
Fri Jun 05, 2020 7:49 pm
Forum: General discussion
Topic: USB-MSD boot EEPROM update - 2020-05-28
Replies: 194
Views: 14562

Re: USB-MSD boot EEPROM update - 2020-05-28

Thanks, does it boot once the SD card is inserted? If I understand this correctly rootfs is on USB and bootfs is on SD card which isn't present at boot. I'll try to reproduce that but it would be useful to know whether it's bypassing the error pattern or if it gets stuck in USB boot mode. The state...
by timg236
Fri Jun 05, 2020 6:40 pm
Forum: General discussion
Topic: USB-MSD boot EEPROM update - 2020-05-28
Replies: 194
Views: 14562

Re: USB-MSD boot EEPROM update - 2020-05-28

@timg236, I'm using the latest bootloader and vl805: BCM2711 detected Dedicated VL805 EEPROM detected BOOTLOADER: up-to-date CURRENT: Thu 28 May 07:22:33 UTC 2020 (1590650553) LATEST: Thu 16 Apr 17:11:26 UTC 2020 (1587057086) FW DIR: /lib/firmware/raspberrypi/bootloader/critical VL805: up-to-date C...
by timg236
Fri Jun 05, 2020 5:33 pm
Forum: Troubleshooting
Topic: Has resetting the EEPROM ever solved a problem for you?
Replies: 6
Views: 145

Re: Has resetting the EEPROM ever solved a problem for you?

There were some posts from people seeing "000000" for 'current VL805 firmware version' which was a bit odd, and did seem to indicate things can go wrong with the Boot Eeprom but I doubt many have had the Boot Eeprom fail under normal use, or that reflashing it has solved whatever problem they were ...
by timg236
Fri Jun 05, 2020 5:03 pm
Forum: Troubleshooting
Topic: How common are HDMI issues for RasPi 4?
Replies: 11
Views: 199

Re: How common are HDMI issues for RasPi 4?

To debug, create a clean Raspberry Pi OS image with the Raspberry Pi Imager. Unplug all USB devices, add hdmi_safe=1 to config.txt and connect the HDMI cable directly to the display. https://www.raspberrypi.org/documentation/configuration/config-txt/video.md This is the procedure I alluded to in my...
by timg236
Fri Jun 05, 2020 4:56 pm
Forum: Troubleshooting
Topic: How common are HDMI issues for RasPi 4?
Replies: 11
Views: 199

Re: How common are HDMI issues for RasPi 4?

It's would be extremely unusual (almost unheard of) for both HDMI ports to be broken so badly that I2C and hotplug doesn't work on either port given that the analog signals are tested on both ports on every board at the factory. To debug, create a clean Raspberry Pi OS image with the Raspberry Pi Im...
by timg236
Fri Jun 05, 2020 4:49 pm
Forum: Troubleshooting
Topic: RPI 4B stopped booting no longer sees certain SD cards
Replies: 4
Views: 113

Re: RPI 4B stopped booting no longer sees certain SD cards

I suspect that the SD card voltage switch or worse IO pads have been damaged. Sometimes old cards are more tolerant of the wrong voltage Sometimes (but not always) this can be confirmed with a microSD sniffer and a scope https://www.sparkfun.com/products/9419 If you have one working card then now wo...
by timg236
Fri Jun 05, 2020 4:28 pm
Forum: General discussion
Topic: FYI: Connecting a SSD when booting from USB
Replies: 2
Views: 103

Re: FYI: Connecting a SSD when booting from USB

I think you need to be a bit more specific. Lots of people are booting Raspberry Pi's with SSDs attached directly to USB either with the new USB boot or with older firmware/bootloaders where just the rootfs is on the SSD. I suspect that your particular SSD is behaving differently when connected via ...
by timg236
Fri Jun 05, 2020 3:47 pm
Forum: Troubleshooting
Topic: Has resetting the EEPROM ever solved a problem for you?
Replies: 6
Views: 145

Re: Has resetting the EEPROM ever solved a problem for you?

No. During manufacture, the EEPROMs are flashed then read again and checked to see if there are any differences. AFAIK we never see any failures and we get no returns due to fault EEPROMs. Pretty much every "boot failure" is due to incorrectly flashed images, bad power supplies, faulty sd-cards and ...
by timg236
Fri Jun 05, 2020 3:02 pm
Forum: General discussion
Topic: USB-MSD boot EEPROM update - 2020-05-28
Replies: 194
Views: 14562

Re: USB-MSD boot EEPROM update - 2020-05-28

The APT firmware which was updated for the Chromium video crash also pulls in USB MSD support so rpi-update isn't required now. Although the more people testing 5.4 Kernel the better because hopefully, that will become the default before too long
by timg236
Fri Jun 05, 2020 2:52 pm
Forum: General discussion
Topic: USB-MSD boot EEPROM update - 2020-05-28
Replies: 194
Views: 14562

Re: USB-MSD boot EEPROM update - 2020-05-28

That doesn't match the start of the hash in rpi-update master

git clone --depth 1 https://github.com/raspberrypi/firmware.git
cd firmware
sha256sum start4.elf
319662b44a4c80d506a1294015c94eef2b5d45fe52ddfad60e58161b2e6ca7df start4.elf
by timg236
Fri Jun 05, 2020 1:23 pm
Forum: General discussion
Topic: USB-MSD boot EEPROM update - 2020-05-28
Replies: 194
Views: 14562

Re: USB-MSD boot EEPROM update - 2020-05-28

@timg236, I'm using the latest bootloader and vl805: BCM2711 detected Dedicated VL805 EEPROM detected BOOTLOADER: up-to-date CURRENT: Thu 28 May 07:22:33 UTC 2020 (1590650553) LATEST: Thu 16 Apr 17:11:26 UTC 2020 (1587057086) FW DIR: /lib/firmware/raspberrypi/bootloader/critical VL805: up-to-date C...
by timg236
Fri Jun 05, 2020 1:06 pm
Forum: General discussion
Topic: USB MSD bootloader EEPROM 2020-06-03 - BETA
Replies: 7
Views: 460

USB MSD bootloader EEPROM 2020-06-03 - BETA

The updated BETA bootloader version 2020-06-03 is now available via APT. No major changes in functionality although the start.elf files required for USB MSD boot are now available via APT. If we don't find any regressions to the existing boot modes then I think this is a potential candidate for prom...
by timg236
Fri Jun 05, 2020 12:47 pm
Forum: General discussion
Topic: USB-MSD boot EEPROM update - 2020-05-28
Replies: 194
Views: 14562

Re: USB-MSD boot EEPROM update - 2020-05-28

Why does rpi-eeprom-update insist that VL805 000137ad is later than 000138a1 ? It doesn't. The latest update available to the rpi-eeprom-update script is 000137ad, so when it finds the VL805 has a newer EEPROM it tells you that it is up-to-date. It also reports the latest version available to it, 0...
by timg236
Thu Jun 04, 2020 5:22 pm
Forum: Troubleshooting
Topic: ACT light blinking isn't in the documentation!
Replies: 23
Views: 529

Re: ACT light blinking isn't in the documentation!

jamesh wrote:
Thu Jun 04, 2020 5:13 pm


I'll update that page.

edit: Done, will take an hour or two to propagate.
Thanks!
by timg236
Thu Jun 04, 2020 2:38 pm
Forum: Troubleshooting
Topic: ACT light blinking isn't in the documentation!
Replies: 23
Views: 529

Re: ACT light blinking isn't in the documentation!

OK, so the code quoted does not exist in the code, so it would appear to be some random HW issue. Perhaps a broken SD card connector? Is there something odd in the way you have the Pi4 cased that might be putting strain on the SD card connector? The long/short values are the wrong way around in htt...
by timg236
Wed Jun 03, 2020 7:09 pm
Forum: General discussion
Topic: Update to default Pi4 bootloader
Replies: 54
Views: 5110

Re: Update to default Pi4 bootloader

I was just referring to booting which is is a bit slower and uses the old controller. Once Linux is started the EMMC2 interface is used and it's the upstream driver which unfortunately I'm not familiar with.
I can't see an obvious reason why an eMMC module would be slower than uSD.
by timg236
Wed Jun 03, 2020 4:48 pm
Forum: General discussion
Topic: Update to default Pi4 bootloader
Replies: 54
Views: 5110

Re: Update to default Pi4 bootloader

You could try adding bootcode_delay in config.txt to delay for a few seconds before the bootloader attempts to loader start.elf

The other way of getting logs is NETCONSOLE which could be enabled on-demand via a GPIO filter
by timg236
Wed Jun 03, 2020 4:35 pm
Forum: General discussion
Topic: Update to default Pi4 bootloader
Replies: 54
Views: 5110

Re: Update to default Pi4 bootloader

The download problem was due to too strict cookie settings. I installed that release and the Raspberry Pi 4 cold boots and reboots fine with it from the eMMC module. vcgencmd version Jun 3 2020 13:08:21 Copyright (c) 2012 Broadcom version b5de8c32f4f45a12a1fdfe107254df82965f9d56 (clean) (release) (...
by timg236
Wed Jun 03, 2020 3:50 pm
Forum: General discussion
Topic: Update to default Pi4 bootloader
Replies: 54
Views: 5110

Re: Update to default Pi4 bootloader

It's just a public Google drive share, it worked for me with Microsoft Edge and another browser without being signed into Google so I don't think it's a permission issue
by timg236
Wed Jun 03, 2020 3:35 pm
Forum: Ubuntu
Topic: Ubuntu 18.04.4 on RaspberryPI4 8GB boot issue
Replies: 7
Views: 295

Re: Ubuntu 18.04.4 on RaspberryPI4 8GB boot issue

You'll need to update the firmware files and possibly the Kernel on Ubuntu 18.04.04 in order for this to boot on a Pi 4 8GB. The new power supply requires new firmware drivers and old firmware would simply crash which is why the bootloader checks for this will refuse to load incompatible firmware. I...
by timg236
Wed Jun 03, 2020 1:31 pm
Forum: General discussion
Topic: USB-MSD boot EEPROM update - 2020-05-28
Replies: 194
Views: 14562

Re: USB-MSD boot EEPROM update - 2020-05-28

Bugs are in Github. USB-MSD functionality supports enough different drives and configurations to be considered stable with workarounds for unusual drives being addressed in later releases. However, it's a bit soon to push this out to all Pi users as a critical bootloader update. The firmware is in r...
by timg236
Wed Jun 03, 2020 12:29 pm
Forum: General discussion
Topic: Update to default Pi4 bootloader
Replies: 54
Views: 5110

Re: Update to default Pi4 bootloader

The eMMC module is discussed in this thread: https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=248157&hilit=emmc . It is this module: https://www.friendlyarm.com/index.php?route=product/product&product_id=249 . It got stuck on the rainbow screen without any diagnostics. I flashed once more th...
by timg236
Tue Jun 02, 2020 4:39 pm
Forum: General discussion
Topic: Network Boot for the 4B
Replies: 17
Views: 696

Re: Network Boot for the 4B

You can. Just set it to 0x2. AFAICT that'll do it, although I don't think it'll stop the boot ROM from looking for and flashing recovery firmware. No idea about the EEPROM. Not my use-case. There's no jumper, I think you'd have to modify the write enable pin on the EEPROM but can't remember whether...
by timg236
Tue Jun 02, 2020 4:15 pm
Forum: General discussion
Topic: Network Boot for the 4B
Replies: 17
Views: 696

Re: Network Boot for the 4B

So where is the documentation on bootcode.sig? ;) There is currently no secure / signed boot implementation on Pi 4. That might change in future for CM4. Okay, never mind signed boot images. Is it possible to store credentials on the Pi without a local SD card? Just answering the local-storage ques...
by timg236
Tue Jun 02, 2020 2:50 pm
Forum: General discussion
Topic: USB-MSD boot EEPROM update - 2020-05-28
Replies: 194
Views: 14562

Re: USB-MSD boot EEPROM update - 2020-05-28

Probably it was explained already, already to much comments to read it all, but if, on a brand new RPi 4, I install this "new" Raspberry Pi OS 32bit" and then clone the SD card image to an SSD in an USB 3.0 disk enclosure, will it work ? For "will it work" it is excluding other problems, more like,...

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