Trying to build u-boot

[gogoer]

Hello.

I'm trying to understand how to build u-boot for my board. I have Nanopi Neo Core + Mini Shield and want to buid u-boot loader for it. I have some problems, maybe someone can help me)

I decide to try extlinux.conf file create boot menu.

First of all i got current version of u-boot (https://github.com/u-boot/u-boot) and configure it with Nanopi Neo default config:

make nanopi_neo_defconfig

i have next output in console:

 

U-Boot SPL 2022.07-rc3-00073-g4fe629d2e8-dirty (May 29 2022 - 23:11:36 +0300)
DRAM: 512 MiB
Trying to boot from MMC1


U-Boot 2022.07-rc3-00073-g4fe629d2e8-dirty (May 29 2022 - 23:11:36 +0300) Allwinner Technology

CPU:   Allwinner H3 (SUN8I 1680)
Model: FriendlyARM NanoPi NEO
DRAM:  512 MiB
Core:  63 devices, 17 uclasses, devicetree: separate
WDT:   Not starting watchdog@1c20ca0
MMC:   mmc@1c0f000: 0, mmc@1c11000: 1
Loading Environment from FAT... *** Warning - bad CRC, using default environment

In:    serial
Out:   serial
Err:   serial
Net:   phy interface1
eth0: ethernet@1c30000
starting USB...
Bus usb@1c1a000: USB EHCI 1.00
Bus usb@1c1a400: USB OHCI 1.0
Bus usb@1c1d000: USB EHCI 1.00
Bus usb@1c1d400: USB OHCI 1.0
scanning bus usb@1c1a000 for devices... 1 USB Device(s) found
scanning bus usb@1c1a400 for devices... 1 USB Device(s) found
scanning bus usb@1c1d000 for devices... EHCI timed out on TD - token=0xd8d80



pause about 20-30 sec


Device NOT ready
   Request Sense returned 00 00 00
data abort
pc : [<5ffaaffe>]          lr : [<5ffa1daf>]
reloc pc : [<4a020ffe>]    lr : [<4a017daf>]
sp : 58a9bee8  ip : 0000001c     fp : 5ffdf00e
r10: 006f656e  r9 : 5bf69ec0     r8 : 58a9bf40
r7 : 00000000  r6 : 5ffe4758     r5 : e59ff014  r4 : 00000000
r3 : 00000000  r2 : 00000001     r1 : 00000000  r0 : 00000000
Flags: nZcv  IRQs off  FIQs off  Mode SVC_32 (T)
Code: 4604 f8d3 a03c 460f (f8da) 3000
Resetting CPU ...

resetting ...

 

then i try to buid sunxi version of bootloader (https://github.com/linux-sunxi/u-boot-sunxi) i have next output:

 

 

U-Boot SPL 2019.01-rc3-g829407b58f (May 29 2022 - 23:34:45 +0300)
DRAM: 512 MiB
Trying to boot from MMC1


U-Boot 2019.01-rc3-g829407b58f (May 29 2022 - 23:34:45 +0300) Allwinner Technology

CPU:   Allwinner H3 (SUN8I 1680)
Model: FriendlyElec NanoPi H3 Core
DRAM:  512 MiB
MMC:   MMC0: 01c20060 = 0x4540, 01c20088 = 0x8151000b, 01c202c0 = 0x4540
MMC2: 01c20060 = 0x4540, 01c20090 = 0x80500000, 01c202c0 = 0x4540
mmc@1c0f000: 0, mmc@1c11000: 1
Loading Environment from FAT... *** Warning - bad CRC, using default environment

In:    serial
Out:   serial
Err:   serial
Net:   eth-1: ethernet@1c30000
starting USB...
USB0:   USB EHCI 1.00
scanning bus 0 for devices... EHCI timed out on TD - token=0xd8d80

pause for 20-30 sec

Device NOT ready
   Request Sense returned 04 44 81
2 USB Device(s) found
       scanning usb for storage devices... 0 Storage Device(s) found
Hit any key to stop autoboot:  0
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:1...
Found /extlinux/extlinux.conf
Retrieving file: /extlinux/extlinux.conf
290 bytes read in 3 ms (93.8 KiB/s)
Boot menu
1:      Default
2:      Local boot script (boot.scr)
Enter choice:

here it works, but i still have big pause.

 

Maybe someone can explain why i have this pause and how properly crteate bootloader for my board? i want to understand this process and build it by myself.

 

[gogoer]

Add:

i write Armbian 22.05 Focal image to sd card and it has same problem with delay in boot process:

 

U-Boot SPL 2021.10-armbian (May 28 2022 - 08:41:34 +0000)
DRAM: 512 MiB
Trying to boot from MMC1


U-Boot 2021.10-armbian (May 28 2022 - 08:41:34 +0000) Allwinner Technology

CPU:   Allwinner H3 (SUN8I 1680)
Model: FriendlyARM NanoPi NEO
DRAM:  512 MiB
MMC:   mmc@1c0f000: 0, mmc@1c11000: 1
Loading Environment from FAT... Unable to use mmc 0:1... In:    serial
Out:   serial
Err:   serial
Net:   phy interface0

Error: ethernet@1c30000 address not set.
No ethernet found.

starting USB...
Bus usb@1c1a000: USB EHCI 1.00
Bus usb@1c1a400: USB OHCI 1.0
Bus usb@1c1d000: USB EHCI 1.00
Bus usb@1c1d400: USB OHCI 1.0
scanning bus usb@1c1a000 for devices... 1 USB Device(s) found
scanning bus usb@1c1a400 for devices... 1 USB Device(s) found
scanning bus usb@1c1d000 for devices... EHCI timed out on TD - token=0xd8d80



pause for 20-30 sec


Device NOT ready
   Request Sense returned 00 00 00
2 USB Device(s) found
scanning bus usb@1c1d400 for devices... 1 USB Device(s) found
       scanning usb for storage devices... 0 Storage Device(s) found
Autoboot in 1 seconds, press <Space> to stop
switch to partitions #0, OK
mmc0 is current device

is it normal or there is chance to build without this pause?

[Werner]

There should be I guess since Armbian boot processes do not have such a (long) pause. No idea though how this is managed. I suggest to take a look at our build script to get an idea who Armbian deals with this.

https://github.com/armbian/build/blob/87fa0628df82db765e45c4d020bb924de329616a/lib/compilation.sh#L117-L325