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. > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
