Ok. Figured that out. Added dtb=null to uEnv.txt. That got me to the following output. It hangs at Starting kernel. I figure I need some minimal device tree to at least get the I2C for the power chip set up.
U-Boot 2017.03-rc1-dirty (Feb 13 2017 - 15:07:27 -0700) OMAP3630/3730-GP ES1.2, CPU-OPP2, L3-200MHz, Max CPU Clock 1 GHz OMAP3 Beagle board + LPDDR/NAND I2C: ready DRAM: 256 MiB NAND: 0 MiB MMC: OMAP SD/MMC: 0 *** Warning - readenv() failed, using default environment Beagle xM Rev C No EEPROM on expansion board No EEPROM on expansion board OMAP die ID: 715e00029ff800000156083e0501c01d Net: usb_ether Error: usb_ether address not set. Hit any key to stop autoboot: 0 switch to partitions #0, OK mmc0 is current device Scanning mmc 0:1... switch to partitions #0, OK mmc0 is current device SD/MMC found on device 0 Checking for: /uEnv.txt ... Checking for: /boot/uEnv.txt ... 62 bytes read in 7 ms (7.8 KiB/s) Loaded environment from /boot/uEnv.txt Using: dtb=null ... Checking if uname_r is set in /boot/uEnv.txt... Running uname_boot ... loading /boot/vmlinuz-4.9.7-armv7-rt-x4 ... 6435000 bytes read in 499 ms (12.3 MiB/s) unable to find null ... booting legacy ... debug: [console=ttyO2,115200n8 root=PARTUUID=00000000-02 ro rootfstype=ext4 rootwait] ... debug: [bootz 0x82000000] ... Starting kernel ... On Monday, February 13, 2017 at 11:33:26 AM UTC-7, acheesehead wrote: > > I am porting RT Linux 4.9.7 to a custom board. When u-boot tries to load > /boot/dtbs/4.9.7-armv7-rt-x4/ompam3-beagle-xm.dtb, it gets an error of > FDT_ERR_BADSTRUCTURE. I have looked at the .dts file and removed stuff that > are not on the board, like dvi and still get the error. > > I'm thinking that if I can disable the tree load in u-boot and get to a > Linux command line that I will be able to debug easier. > > Is there an easy way to do that? > > -- > John 3:16 > IN GOD WE TRUST!!! > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/8c6ab4a1-da55-42c7-b740-b604ac48f0c7%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
