[ECOS] porting eCos / Network Stack

Richard Rauch Richard.Rauch@vipa.de
Thu Nov 27 09:59:00 GMT 2003

Dear eCos community,
our problem: how to get running  eCos + network stack  on Atmel 
At91rm9200 controller?

what we have achieved so far:
1 porting eCos to the Atmel At91rm9200 (=ARM922T), runs with configtools 
default.ecc and redboot.ecc
2 adding ethernet driver for onboard EMAC of the At91rm9200
3 redboot running over ethernet (polled)
4 using configtools net.ecc we created eCos + network stack. When we 
start this up with the 'twothreads.c' example,
  we get the following debug print:

Init device '/dev/ttydiag'
Init tty channel: 20035a2c
Init device '/dev/haldiag'
HAL/diag SERIAL init
Network stack using 65536 bytes for misc space
                    65536 bytes for mbufs
                    131072 bytes for mbuf clusters
[cyg_net_init] Init: mbinit(0x00000000)
[cyg_net_init] Init: cyg_net_init_devs(0x00000000)
Init device 'emac_eth0'
[cyg_net_init] Init: loopattach(0x00000000)
[cyg_net_init] Init: ifinit(0x00000000)
IFP: 0x20034e34, next: 0x20083ba0
IFP: 0x20083ba0, next: 0x00000000
[cyg_net_init] Init: domaininit(0x00000000)
[cyg_net_init] Init: cyg_net_add_domain(0x20035744)
New domain internet at 0x00000000
[cyg_net_init] Init: cyg_net_add_domain(0x20035230)
New domain route at 0x00000000
[cyg_net_init] Init: cyg_route_init(0x00000000)
[cyg_net_init] Done
...... now the twothreads.c example is running properly but the network 
thread is sleeping ....

P R O B L E M:  the eth_drv_start() function is never called. Why?
That function will enable the network interrupts of the EMAC, so it is 
urgently needed to be called somewhen.

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