netbsd.gz.ub: gunzip fails

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

Hello,
I have an A20 board (olimex lime2) which tftpboot a netbsd.gz.ub kernel.
It's actually running a  8.99.25 (SUNXI) kernel.
I tried to update to an up to date GENERIC evbarmv7hf kernel, build from
scratch (clean obj dir and tools). u-boot can load it but fails to
uncompress:
Scanning mmc 0:1...

Found U-Boot script /boot.scr

reading /boot.scr

1029 bytes read in 21 ms (47.9 KiB/s)

## Executing script at 43100000

ethernet@01c50000 Waiting for PHY auto negotiation to complete...... done

Speed: 1000, full duplex
Using ethernet@01c50000 device
TFTP from server 132.227.102.5; our IP address is 132.227.102.39
Filename 'netbsd.gz.ub'.
Load address: 0x42000000
Loading: #T ################################################################
         #################################################################
         #################################################################
         ##########################################################
         217.8 KiB/s
done
Bytes transferred = 3711760 (38a310 hex)
reading sun7i-a20-olinuxino-lime2.dtb
29536 bytes read in 28 ms (1 MiB/s)
## Booting kernel from Legacy Image at 42000000 ...
   Image Name:   NetBSD/earmv7hf 8.99.35
   Image Type:   ARM Linux Kernel Image (no loading done) (gzip compressed)
   Data Size:    4220765 Bytes = 4 MiB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... Bad Data CRC
ERROR: can't get kernel image!
SCRIPT FAILED: continuing...
reading /sun7i-a20-olinuxino-lime2.dtb
29536 bytes read in 38 ms (758.8 KiB/s)


Any idea ? do I need to update u-boot, or some parameters ?

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>

NetBSD: 26 ans d'experience feront toujours la difference
--