There's probably not enough info here to do much with, I did this in response to a conversation on the Pine64 forum: https://forum.pine64.org/showthread.php?tid=7070
I did this using the idbloader.img from u-boot-aarch64-2019.10.tgz that's for the Rock Pro 64 because it's close. The laptop's page: https://www.pine64.org/pinebook-pro/ dd if=miniroot66.fs of=/dev/sdb bs=1M dd if=idbloader.img of=/dev/sdb bs=1M seek=64 minicom -D /dev/ttyUSB0 -b 1500000 -8 Put the sd card in, plugged in the uart cable, powered up. I saw this (copied and pasted): OpenBSD 6.6 (RAMDISK) #257: Sat Oct 12 19:06:25 MDT 2019 deys/arch/arm64/compile/RAMDISK real mem = 4058435584 (3870MB) avail mem = 3858071552 (3679MB) mainbus0 at root: Rockchip RK3399 Evaluation Board cpu0 at mai 64b/line 4-way L1 D-cache cpu0: 512KB 64b/line 16-way L2 cache efi0 at mainbus0: UEFI 2.0.5 rev 0x0 psci0 at mainbus0: PSCI 1.0 agintc0 at mainbus0 sec shift 3:4 nirq 288 nredist 6: "interrupt-controller" agintcmsi0 at agintc0 syscon0 at mainbus0: "qos" syscon1 at mainbus0: "qos" syscon2 syscon4 at mainbus0: "qos" syscon7 at mainbus0: "qos" syscon8 at mainbus0: "qos" syscon9syscon10 at mainbus0: "qos" sys" syscon13 at mainbus0: "qos" syscon14 at mainbus0: "qos" syssyscon16 at mainbus0: "qos" sysos" syscon19 at mainbus0: "qos" syscon20 at mainbus0: "qos" ssyscon22 at mainbus0: "qos" sys"qos" syscon25 at mainbus0: "power-management" "power-controllsyscon26 at mainbus0: "syscon" syscon27 at mainbus0: "syscon" syscon28 at mainbus0: "syscon" rkclock0 at mainbus0 rkclock1 at mainbus0 syscon29 at mainbus0: "syscon" "io-domains" at syscon29 not configured "usb2-phy" at syscon29 t configured "phy" at syscon29 not configured rkpinctrl0 at mainbus0: "pinctrl" rkgpio0 at rkpinctrl0 rkgpio1 at rkpinctrl0 rkgpio2 at rkpinctrl0 rkgpio3 at rkpinctrl0 r0 "display-subsystem" at mainbus0 not configured "pmu_a53" at mainbus0 not configured "pmu_a72" at mainbus0 not configured agtisimplebus0 at mainbus0: "amba" "dma-controller" at simplebus0 nplebus0 not configured "crypto" at mainbus0 not configured dwm: 50 MHz base clock sdmmc0 at dwmmc0: 4-bit, sd high-speed, dma sdhc0 at mainbus0 sdhc0: SDHC 3.0, 200 MHz base clock sdmmc1 at sdhc0: 8-bit, sd : 50 MHz base clock sdmmc2 at dwmmc1: 4-bit, sd high-speed, mmcehci0 at mainbus0 usb0 at ehci0: USB revision 2.0 uhub0 at usb0 configuration 1 interface 0 "Generic EHCI root hub/1.00 addr 1 ohci0 at mainbus0: version 1.0 ehci1 at mainbus0 usb1 at ehci1: USB revision 2.0 uhub1 at usb1 configuration 1 interface 0 "Generic EHCI root hubohci1 at mainbu0 "usb" at mainbus0 not configured "usb" at mainbus0 not configured "saradc" at mainbus0 not coniic0 at rkiic0 rkiic1 at mainbus0 iic1 at rkiic1 com0 at mainbus0: ns16550, no working fifo com0: console "spi" at mainbus0 not"thermal-zones" at mainbus0 not configured rkiic2 at mainbus0 iic2 at rkiic2 "pwm" at mainbus0 not configured "pwm" at mainbnot configured "efuse" at mainbus0 not configured "watchdog" arkiic3 at mainbus0 iic3 at rkiic3 rkpmic0 at iic3 addr 0x1b: RK808 "vop" at mainbus0 not configured "edp" at mainbus0 not configured "reserved-d "xin32k" at mainbus0 not configured "dc-12v" at mainbus0 notainbus0 not configured "vcc-phy-regulator" at mainbus0 not conf not configured "vcc5v0-usb3-host-regulator" at mainbus0 not coinbus0 not configured "backlight" at mainbus0 not configured ""vcc3v0-sdio" at mainbus0 not configured "sdio-pwrseq" at mainbsimplefb0 at mainbus0panic: uvm_mapent_addr_insert: map 0) The operating system has halted. Please press any key to reboot -- ------------- No, I won't call it "climate change", do you have a "reality problem"? - AB1JX Cities are cages built to contain excess people and keep them from cluttering up nature. Impeach Impeach Impeach Impeach Impeach Impeach Impeach Impeach