Hello.
I'm having trouble persisting my environment variables to the SD Card onto which I have FAT formatted and then written U-Boot to using the following command:
sudo dd if=u-boot-sunxi-with-spl.bin of=/dev/disk2 bs=1024 seek=8
I get the following error when booting a Linksprite_pcDuino3_Nano with the SD Card I've built:
U-Boot SPL 2018.11 (Dec 06 2018 - 17:57:48 +0000) DRAM: 1024 MiB CPU: 912000000Hz, AXI/AHB/APB: 3/2/2 Trying to boot from MMC1
U-Boot 2018.11 (Dec 06 2018 - 17:57:48 +0000) Allwinner Technology
CPU: Allwinner A20 (SUN7I) Model: LinkSprite pcDuino3 Nano I2C: ready DRAM: 1 GiB MMC: SUNXI SD/MMC: 0 Loading Environment from FAT... Unable to use mmc 0:0... In: serial Out: serial Err: serial SCSI: SATA link 0 timeout. AHCI 0001.0100 32 slots 1 ports 3 Gbps 0x1 impl SATA mode flags: ncq stag pm led clo only pmp pio slum part ccc apst
Net: eth0: ethernet@1c50000 starting USB... USB0: USB EHCI 1.00 USB1: USB OHCI 1.0 USB2: USB EHCI 1.00 USB3: USB OHCI 1.0 scanning bus 0 for devices... 1 USB Device(s) found scanning bus 2 for devices... 1 USB Device(s) found scanning usb for storage devices... 0 Storage Device(s) found Hit any key to stop autoboot: 0 => saveenv Saving Environment to FAT... Unable to use mmc 0:0... Failed (1)
Thank you for any light that may be shed upon this error.