Hi All,
I know this post is off topic - I you can point me to a better target audience (except LKML - they are somewhat reserved about requests for help ;) please let me know. That said, here goes...
I now have U-Boot (x86 port) fully capable of booting a Linux kernel (2.6.33). I downloaded Buildroot and built a JFFS2 image and after a lot of mucking around, finally got U-Boot to ls it and the Linux Kernel to mount it.
My Linux kernel command line is:
console=ttyS0,115200 noinitrd rw root=/dev/mtdblock0 rootfstype=jffs2 init=/bin/sh
I've added a few debug lines in Linux. The last lines of the boot process are as follows:
[ 1.340905] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled [ 1.343423] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A [ 1.345935] serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A [ 1.396891] brd: module loaded [ 1.422898] loop: module loaded [ 1.426898] Serck eNET flash device: 0x1000000 at 0x11000000 [ 1.436921] Serck eNET Flash Bank #0: Found 1 x16 devices at 0x0 in 16-bit bank [ 1.438291] Intel/Sharp Extended Query Table at 0x0031 [ 1.439291] Intel/Sharp Extended Query Table at 0x0031 [ 1.440557] Using buffer write method [ 1.441575] cfi_cmdset_0001: Erase suspend on write enabled [ 1.449905] 8139too Fast Ethernet driver 0.9.28 [ 1.460851] eth0: RealTek RTL8139 at 0x2000, 00:40:f4:6e:67:ac, IRQ 10 [ 1.472862] eth1: RealTek RTL8139 at 0x2100, 00:40:f4:6e:67:ac, IRQ 9 [ 1.475904] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0 [ 1.479905] rtc-test rtc-test.0: rtc core: registered test as rtc0 [ 1.482905] rtc-test rtc-test.1: rtc core: registered test as rtc1 [ 1.498879] TCP cubic registered [ 1.505900] rtc-test rtc-test.0: setting system clock to 2010-03-24 02:12:31 UTC (1269396751) [ 1.584915] VFS: Mounted root (jffs2 filesystem) on device 31:0. [ 1.587000] Freeing unused kernel memory: 168k freed [ 1.591853] Call mark_rodata_ro() [ 1.595840] Write protecting the kernel text: 2660k [ 1.598100] Write protecting the kernel read-only data: 772k [ 1.598880] Set system_state = SYSTEM_RUNNING [ 1.600505] Call numa_default_policy() [ 1.601504] Opening /dev/console [ 1.612898] Set current->signal->flags |= SIGNAL_UNKILLABLE [ 1.614104] run_init_process(/bin/sh) [ 1.615189] sys_execve() [ 1.616189] do_execve() [ 1.816894] execve succeeded
So it looks like the kernel has no problem locating /bin/sh in the JFFS2 partition but then the lights go out. I've also tried /bin/init - same result.
I even tried changing /dev/console to be a symlink to /dev/ttyS0 but that didn't change a thing.
I am _SO_ close to getting this going, and after all the work I have put into U-Boot to get this far, it is really frustrating.
Any ideas?
TIA
Graeme