Thank you for the clarification. I've correct my issue by partitioning the MMC storage and formatting the partition FAT. Then burning the U-Boot Image to 8K in on the raw media.
On Tue, Dec 18, 2018 at 12:48 AM Heinrich Schuchardt xypron.glpk@gmx.de wrote:
On 12/6/18 7:12 PM, Robin Polak wrote:
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)
Partitions are numbered from 1. So partition 1 would be mmc 0:1.
mmc 0:0 would require that there is no partition table and the FAT file system starts in block 0.
Please, check the value of CONFIG_ENV_FAT_DEVICE_AND_PART in your configuration. The default is CONFIG_ENV_FAT_DEVICE_AND_PART="0:auto"
With "auto" function blk_get_device_part_str() looks for the first partition that has the bootable flag set.
So to analyze your problem further please look at the output of
sudo fdisk -l /dev/<your_SD_card>
assuming that you use a DOS partition table.
Best regards
Heinrich
Thank you for any light that may be shed upon this error.