Boot from SDCard with root on NFS

[tiagogb]

Im trying to boot from network with ORPI-One-Plus, but seems to be no support for boot direct from u-boot.

 

is possible to boot (kernel, uboot) from sdcard, and leave only / (root) on NFS?

 

When i try to compile/boot only u-boot-sunxi-with-spl.bin

Quote

U-Boot SPL 2020.04-gc1ab7274 (Feb 14 2021 - 22:26:03 -0300)

DRAM: 1024 MiB

Trying to boot from MMC1

NOTICE:  BL31: v2.4(debug):v2.4-358-gd3e145b4c

NOTICE:  BL31: Built : 21:02:09, Feb 14 2021

NOTICE:  BL31: Detected Allwinner H6 SoC (1728)

NOTICE:  BL31: Found U-Boot DTB at 0xc083fb8, model: OrangePi One Plus

INFO:    ARM GICv2 driver initialized

INFO:    Configuring SPC Controller

INFO:    PMIC: Probing AXP805 on RSB

INFO:    PMIC: aldo1 voltage: 3.300V

INFO:    PMIC: aldo3 voltage: 3.300V

INFO:    PMIC: bldo1 voltage: 1.800V

INFO:    PMIC: bldo2 voltage: 1.800V

INFO:    PMIC: bldo3 voltage: 1.800V

INFO:    PMIC: cldo1 voltage: 3.300V

INFO:    PMIC: dcdcd voltage: 0.960V

INFO:    PMIC: dcdce voltage: 1.200V

INFO:    BL31: Platform setup done

INFO:    BL31: Initializing runtime services

INFO:    BL31: cortex_a53: CPU workaround for 855873 was applied

INFO:    BL31: cortex_a53: CPU workaround for 1530924 was applied

NOTICE:  PSCI: System suspend is unavailable

INFO:    BL31: Preparing for EL3 exit to normal world

INFO:    Entry point address = 0x4a000000

INFO:    SPSR = 0x3c9

 

 

U-Boot 2020.04-gc1ab7274 (Feb 14 2021 - 22:26:03 -0300) Allwinner Technology

 

CPU:   Allwinner H6 (SUN50I)

Model: OrangePi One Plus

DRAM:  1 GiB

MMC:   mmc@4020000: 0

Loading Environment from FAT... Unable to use mmc 0:0... In:    serial@5000000

Out:   serial@5000000

Err:   serial@5000000

Net:   No ethernet found.

starting USB...

Bus usb@5101000: USB EHCI 1.00

Bus usb@5101400: USB OHCI 1.0

Bus usb@5311000: USB EHCI 1.00

Bus usb@5311400: USB OHCI 1.0

scanning bus usb@5101000 for devices... 1 USB Device(s) found

scanning bus usb@5101400 for devices... 1 USB Device(s) found

scanning bus usb@5311000 for devices... 1 USB Device(s) found

scanning bus usb@5311400 for devices... 1 USB Device(s) found

       scanning usb for storage devices... 0 Storage Device(s) found

Autoboot in 2 seconds, press <Space> to stop

switch to partitions #0, OK

mmc0 is current device

** No partition table - mmc 0 **

 

Device 0: unknown device

No ethernet found.

missing environment variable: pxeuuid

missing environment variable: bootfile

Retrieving file: pxelinux.cfg/00000000

No ethernet found.

missing environment variable: bootfile

Retrieving file: pxelinux.cfg/0000000

No ethernet found.

missing environment variable: bootfile

Retrieving file: pxelinux.cfg/000000

No ethernet found.

missing environment variable: bootfile

Retrieving file: pxelinux.cfg/00000

No ethernet found.

missing environment variable: bootfile

Retrieving file: pxelinux.cfg/0000

No ethernet found.

missing environment variable: bootfile

Retrieving file: pxelinux.cfg/000

No ethernet found.

missing environment variable: bootfile

Retrieving file: pxelinux.cfg/00

No ethernet found.

missing environment variable: bootfile

Retrieving file: pxelinux.cfg/0

No ethernet found.

missing environment variable: bootfile

Retrieving file: pxelinux.cfg/default-arm-sunxi-sunxi

No ethernet found.

missing environment variable: bootfile

Retrieving file: pxelinux.cfg/default-arm-sunxi

No ethernet found.

missing environment variable: bootfile

Retrieving file: pxelinux.cfg/default-arm

No ethernet found.

missing environment variable: bootfile

Retrieving file: pxelinux.cfg/default

No ethernet found.

Config file not found

No ethernet found.

No ethernet found.

 

[tparys]

I'm not aware of any direct NFS support in u-boot. Though that support may exist in recent versions.

 

However, initramfs-tools does support NFS, and you may consider using that instead.

 

So, you may want to make a local boot partition, even if your root is NFS. And all you'd need is u-boot, your kernel, initramfs, and DTB.

 

You might start looking into the "nfsroot" and "ip" options of initramfs-tools:

 

http://manpages.ubuntu.com/manpages/trusty/man8/initramfs-tools.8.html