RTEMS 6 libbsd, networking issue with xilinx_zynq_zybo_z7 cgem0

[Heinz Junkes]

Hi,
unfortunately I cannot activate the cgem0 network interface with RTEMS 6 (libbsd 6-freebsd-12) 
on a xilinx_zynq_zybo_z7 board :

cgem0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
d       options=80008<VLAN_MTU,LINKSTATE>
e       ether 92:c2:88:7d:f4:79
        inet6 fe80::90c2:88ff:fe7d:f479%cgem0 prefixlen 64 scopeid 0x1
b       inet 141.14.128.72 netmask 0xfffff000 broadcast 141.14.143.255
u       nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
ifconfig: cgem0: ngo media types?: cgem0: sending ARP announce (1 of 2), next in 2.0 seconds


These messages appear during startup : 

***** Initializing network (libbsd, dhcpcd) *****
nexus0: <RTEMS Nexus device>
cgem0: <Cadence CGEM Gigabit Ethernet Interface> on nexus0
miibus0: <MII bus> on cgem0
info: cgem0: Ethernet address: 92:c2:88:7d:f4:79
arasan_sdhci1: <Arasan SDIO> on nexus0
arasan_sdhci1-slot0: Hardware doesn't specify base clock frequency, using 50MHz as default.
arasan_sdhci1-slot0: Hardware doesn't specify timeout clock frequency, setting BROKEN_TIMEOUT quirk.
arasan_sdhci1-slot0: Hardware doesn't report any support voltages.
arasan_sdhci1: Card Detect failed to stabilize, setting to not present.
arasan_sdhci0: <Arasan SDIO> on nexus0
arasan_sdhci0-slot0: Hardware doesn't specify base clock frequency, using 50MHz as default.
arasan_sdhci0-slot0: Hardware doesn't specify timeout clock frequency, setting BROKEN_TIMEOUT quirk.
mmc0: <MMC/SD bus> on arasan_sdhci0
zy7_slcr0: <Zynq-7000 slcr block> on nexus0
mmcsd0: 16GB <SDHC SC16G 8.0 SN E237916D MFG 01/2021 by 3 SD> (read-only) at mmc0 50.0MHz/4bit/65535-block

I have already found a suitable entry here, but unfortunately I don't know how it 'fits' my problem:
https://lists.rtems.org/pipermail/users/2023-July/068855.html


Danke Heinz
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