Hi all,
I'm trying to boot linux with minimal config on our FPGA board which is under development.
After months of trying (but I tried this intermittently) I think I'm about to see the shell prompt.
(there was a bug in interconnect driver that I found yesterday, this caused a long delay)
Anyway, when I run linux kernel on a qemu machine, the boot process ends like this at the shell prompt.
(The echo '### INIT SCRIPT ###' was put in /init script which is in the initramfs)
Run /init as init process
### INIT SCRIPT ###
mount: mounting none on /tmp failed: Invalid argument
This boot took 2.12 seconds
/bin/sh: can't access tty; job control turned off
/ #
/ #
Now, when I run it on our FPGA board using u-boot, it ends like this.
Run /init as init process
### INIT SCRIPT ###
mount: mounting none on /tmp failed: Invalid argument
This boot took 0.00 seconds
/bin/sh: can't acce
So it seems this init_kernel thread executes /init and /init excutes /bin/sh at the end.
this is the /init script.
#!/bin/sh
echo "### INIT SCRIPT ###"
mkdir /proc /sys /tmp
mount -t proc none /proc
mount -t sysfs none /sys
mount -t tmpfs none /tmp
echo -e "\nThis boot took $(cut -d' ' -f1 /proc/uptime) seconds\n"
#ifconfig eth0 10.0.2.15 netmask 255.255.255.0 up
#route add default gw 10.0.2.2
exec /bin/sh
Somehow the busybox applet /bin/sh is stuck somewhere.
Can anybody tell me where I should look? Or how to debug this?
Thanks in advance!
Chan Kim
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