Sorry the entire serial output from the upgrade is not available. The log lasted below shows the end of the upgrade, and two attempts to boot bsd and bsd.rd. I mostly mashed enter during the upgrade like usual. The mirror was openbsd.cs.toronto.edu. After mounting my SD card on another machine, I realize apparently I had installed OpenBSD to the internal memory of the beagle bone. This post is mostly informational in the event in which I haven't done something wrong and the new kernel is really causing a problem for other people.
Output from my console server: Entering charater/text Mode Escape character is ^] Installing base61.tgz 100% |**************************| 53626 KB 03:37 Installing comp61.tgz 100% |**************************| 42569 KB 02:07 Installing man61.tgz 100% |**************************| 7148 KB 00:50 Installing game61.tgz 100% |**************************| 2706 KB 00:14 Installing xbase61.tgz 100% |**************************| 15377 KB 01:03 Installing xshare61.tgz 100% |**************************| 4408 KB 00:24 Installing xfont61.tgz 100% |**************************| 39353 KB 07:03 Installing xserv61.tgz 100% |**************************| 6614 KB 00:23 Location of sets? (disk http nfs or 'done') [done] Location of sets? (disk http nfs or 'done') [done] done Making all device nodes...done. CONGRATULATIONS! Your OpenBSD upgrade has been successfully completed! To boot the new system, enter 'reboot' at the command prompt. # reboot syncing disks... done rebooting... U-Boot SPL 2017.03 (Mar 26 2017 - 16:58:08) Trying to boot from MMC1 MMC partition switch failed *** Warning - MMC partition switch failed, using default environment reading u-boot.img reading u-boot.img U-Boot 2017.03 (Mar 26 2017 - 16:58:08 -0600) CPU : AM335X-GP rev 2.1 I2C: ready DRAM: 512 MiB MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 *** Warning - bad CRC, using default environment <ethaddr> not set. Validating first E-fuse MAC Net: cpsw, usb_ether Press SPACE to abort autoboot in 2 seconds switch to partitions #0, OK mmc0 is current device SD/MMC found on device 0 reading boot.scr ** Unable to read file boot.scr ** reading uEnv.txt ** Unable to read file uEnv.txt ** switch to partitions #0, OK mmc0 is current device Scanning mmc 0:1... reading /am335x-boneblack.dtb 34643 bytes read in 9 ms (3.7 MiB/s) Found EFI removable media binary efi/boot/bootarm.efi reading efi/boot/bootarm.efi 64556 bytes read in 13 ms (4.7 MiB/s) ## Starting EFI application at 82000000 ... Scanning disks on usb... Scanning disks on mmc... MMC Device 2 not found MMC Device 3 not found Found 6 disks >> OpenBSD/armv7 BOOTARM 0.5 boot> booting sd0a:/bsd: 3860848+161316+491028 [80+511408+240104]=0x506dbc OpenBSD/armv7 booting ... arg0 0x806dbc arg1 0xe05 arg2 0x88000000 Allocating page tables freestart = 0xc0807000, free_pages = 915449 (0x000df7f9) panic: initarm: out of memory U-Boot 2017.03 (Mar 26 2017 - 16:58:08 -0600) CPU : AM335X-GP rev 2.1 I2C: ready DRAM: 512 MiB MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 *** Warning - bad CRC, using default environment <ethaddr> not set. Validating first E-fuse MAC Net: cpsw, usb_ether Press SPACE to abort autoboot in 2 seconds switch to partitions #0, OK mmc0 is current device SD/MMC found on device 0 reading boot.scr ** Unable to read file boot.scr ** reading uEnv.txt ** Unable to read file uEnv.txt ** switch to partitions #0, OK mmc0 is current device Scanning mmc 0:1... reading /am335x-boneblack.dtb 34643 bytes read in 9 ms (3.7 MiB/s) Found EFI removable media binary efi/boot/bootarm.efi reading efi/boot/bootarm.efi 64556 bytes read in 14 ms (4.4 MiB/s) ## Starting EFI application at 82000000 ... Scanning disks on usb... Scanning disks on mmc... MMC Device 2 not found MMC Device 3 not found Found 6 disks >> OpenBSD/armv7 BOOTARM 0.5 boot> bsd.rd booting sd0a:bsd.rd: 2176476+7984008+439148 [80+305648+145631]=0xa8ebb0 OpenBSD/armv7 booting ... arg0 0xd8ebb0 arg1 0xe05 arg2 0x88000000 Allocating page tables freestart = 0xc0d8f000, free_pages = 914033 (0x000df271) panic: initarm: out of memory The operating system has halted. Please press any key to reboot.