uBoot broken on RPI2 Model B?
- Reply: Karl Denninger : "Re: uBoot broken on RPI2 Model B?"
- Reply: Emmanuel Vadot : "Re: uBoot broken on RPI2 Model B?"
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Date: Fri, 03 Mar 2023 21:12:48 UTC
Just tried to build -13STABLE for the RPi2 and ran into this (I'm using Crochet and have had to make some changes to the board-specific files, but it appears the problem that results in it not working is in uboot; I've made a number of changes since it looks like the system now wants to boot off EFI as opposed to what worked in -12, which would be ok if it can find the boot device -- I think (may be wrong here) U-Boot 2023.01 (Jan 26 2023 - 04:25:18 +0000) DRAM: 948 MiB RPI 2 Model B (0xa21041) Core: 70 devices, 13 uclasses, devicetree: board MMC: mmc@7e300000: 1 Loading Environment from FAT... ** Bad device specification mmc 0 ** In: serial Out: vidconsole Err: vidconsole Net: No ethernet found. starting USB... Bus usb@7e980000: USB DWC2 scanning bus usb@7e980000 for devices... 3 USB Device(s) found scanning usb for storage devices... 0 Storage Device(s) found Hit any key to stop autoboot: 0 U-Boot> Needless to say if I let it try to continue it fails as it can't find the SD card and "mmc dev" shows nothing present. Obviously going to dig into this further myself but I recalled something about this uBoot version being broken on older Pis... The layout of the disk on the boot partition is thus: root@NewFS:/mnt # ls -la total 12679 drwxr-xr-x 1 root wheel 16384 Dec 31 1979 . drwxr-xr-x 35 root wheel 42 Jan 20 10:16 .. drwxr-xr-x 1 root wheel 4096 Feb 13 11:09 EFI -rwxr-xr-x 1 root wheel 709 Feb 13 11:09 README -rwxr-xr-x 1 root wheel 26745 Feb 13 11:09 bcm2709-rpi-2-b.dtb -rwxr-xr-x 1 root wheel 52456 Feb 13 11:09 bootcode.bin -rwxr-xr-x 1 root wheel 141 Feb 13 11:09 config.txt -rwxr-xr-x 1 root wheel 7314 Feb 13 11:09 fixup.dat -rwxr-xr-x 1 root wheel 3187 Feb 13 11:09 fixup_cd.dat -rwxr-xr-x 1 root wheel 10298 Feb 13 11:09 fixup_db.dat -rwxr-xr-x 1 root wheel 10298 Feb 13 11:09 fixup_x.dat drwxr-xr-x 1 root wheel 20480 Feb 13 11:09 overlays -rwxr-xr-x 1 root wheel 21169 Feb 13 11:09 rpi2.dtb -rwxr-xr-x 1 root wheel 2952960 Feb 13 11:09 start.elf -rwxr-xr-x 1 root wheel 793116 Feb 13 11:09 start_cd.elf -rwxr-xr-x 1 root wheel 4794472 Feb 13 11:09 start_db.elf -rwxr-xr-x 1 root wheel 3704808 Feb 13 11:09 start_x.elf -rwxr-xr-x 1 root wheel 521916 Feb 13 11:09 u-boot.bin root@NewFS:/mnt # ls -laR EFI total 24 drwxr-xr-x 1 root wheel 4096 Feb 13 11:09 . drwxr-xr-x 1 root wheel 16384 Dec 31 1979 .. drwxr-xr-x 1 root wheel 4096 Feb 13 11:09 BOOT EFI/BOOT: total 140 drwxr-xr-x 1 root wheel 4096 Feb 13 11:09 . drwxr-xr-x 1 root wheel 4096 Feb 13 11:09 .. -rwxr-xr-x 1 root wheel 133812 Feb 13 11:09 bootarm.efi root@NewFS:/mnt # more config.txt init_uart_clock=3000000 enable_uart=1 kernel=u-boot.bin kernel7=u-boot.bin dtoverlay=mmc audio_pwm_mode=2 dtparam=audio=on,i2c_arm=on,spi=on root@NewFS:/mnt # ls -la overlays | grep mmc -rwxr-xr-x 1 root wheel 1221 Feb 13 11:09 mmc.dtbo Which I BELIEVE should work -- assuming that I can get "see" the SD card from u-boot that is.... Installed rpi-related packages: root@NewFS:/mnt # pkg info|grep rpi rpi-firmware-1.20210303.g20210303 Firmware for RaspberryPi Single Board Computer u-boot-rpi2-2023.01 Cross-build das u-boot for model rpi2 u-boot-rpi3-2023.01 Cross-build das u-boot for model rpi3 u-boot-rpi4-2023.01 Cross-build das u-boot for model rpi4 -- Karl Denninger karl@denninger.net /The Market Ticker/ /[S/MIME encrypted email preferred]/