* initrd - console
@ 2007-12-11 1:26 Siva Prasad
2007-12-11 1:34 ` Michael Ellerman
0 siblings, 1 reply; 3+ messages in thread
From: Siva Prasad @ 2007-12-11 1:26 UTC (permalink / raw)
To: linuxppc-dev, linuxppc-embedded
Hi,
I am trying to boot kernel with initrd. However, it hangs in
run_init_process("/sbin/init"). I went into the system calls to see what
it is doing.=20
As part of debugging, I ended up adding a printk statement in
arch/powerpc/kernel/process.c:sys_execve() routine. Noticed that all the
calls are coming here, however nothing is printed on the screen. I think
initrd is executing fine (unless one of you says otherwise). See the
capture below for boot log.
Question 1: how come nothing is printed from ramdisk (userland programs)
to the serial console, while all the kernel printk's are working
perfectly?
Question 2: How important is to have interrupts working for just
printing. I know that interrupts are must to enter input.
Thanks in advance.
Using MPC86xx HPCN machine description
Total memory =3D 1024MB; using 2048kB for hash table (at cfe00000)
Linux version 2.6.19 (sprasad@cider.bivio.net) (gcc version 4.1.1
20060525 (Red Hat 4.1.1-1)) #206 SMP Mon Dec 10 16:32:37 PST 2007
Found initrd at 0xc6000000:0xc62f912a
Found legacy serial port 0 for /soc8641@ff700000/serial@4500
mem=3Dff704500, taddr=3Dff704500, irq=3D1a, clk=3D598500000, speed=3D0
Found MPC86xx PCIE host bridge at 0x00000000ff708000. Firmware bus
number: 0->254
Found MPC86xx PCIE host bridge at 0x00000000ff709000. Firmware bus
number: 0->255
MPC86xx HPCN board from Freescale Semiconductor
Zone PFN ranges:
DMA 0 -> 196608
Normal 196608 -> 196608
HighMem 196608 -> 262144
early_node_map[1] active PFN ranges
0: 0 -> 262144
Built 1 zonelists. Total pages: 260096
Kernel command line: root=3D/dev/ram rw console=3DttyS0,115200
mpic: Setting up MPIC " MPIC " version 1.2 at ff740000, max 2 CPUs
mpic: ISU size: 16, shift: 4, mask: f
mpic: Initializing for 80 sources
PID hash table entries: 4096 (order: 12, 16384 bytes)
generic_calibrate_decr: 7 ppc_tb_freq =3D 150000000.
generic_calibrate_decr: 7 ppc_proc_freq =3D 1649267441.
time_init: decrementer frequency =3D 150.000000 MHz
time_init: processor frequency =3D 1649.267441 MHz
Console: colour dummy device 80x25
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 1030352k/1048576k available (2740k kernel code, 279760k
reserved, 232k data, 129k bss, 156k init)
Mount-cache hash table entries: 512
mpic: requesting IPIs ...=20
Processor 1 is stuck.
Brought up 1 CPUs
checking if image is initramfs...it isn't (no cpio magic); looks like an
initrd
Freeing initrd memory: 3044k freed
NET: Registered protocol family 16
SIVA sys_execve - filename=3D/sbin/hotplug.
PCI: Probing PCI hardware
SIVA sys_execve - filename=3D/sbin/hotplug.
PCI: 0000:00:00.0: class b20 doesn't match header type 01. Ignoring
class.
SIVA sys_execve - filename=3D/sbin/hotplug.
PCI: Cannot allocate resource region 1 of PCI bridge 1
PCI: Cannot allocate resource region 2 of PCI bridge 1
PCI: Cannot allocate resource region 1 of device 0000:01:00.0
PCI: Cannot allocate resource region 3 of device 0000:01:00.0
PCI: Failed to allocate mem resource #1:4000@0 for 0000:01:00.0
PCI: Failed to allocate mem resource #3:10000@0 for 0000:01:00.0
SIVA sys_execve - filename=3D/sbin/hotplug.
bus mdio_bus: add driver Generic PHY
SIVA sys_execve - filename=3D/sbin/hotplug.
Generic PHY: Registered new driver
SCSI subsystem initialized
bus i2c: add driver i2c_adapter
NET: Registered protocol family 2
IP route cache hash table entries: 32768 (order: 5, 131072 bytes)
TCP established hash table entries: 131072 (order: 8, 1048576 bytes)
TCP bind hash table entries: 65536 (order: 7, 524288 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
highmem bounce pool size: 64 pages
io scheduler noop registered
io scheduler deadline registered (default)
io scheduler cfq registered
bus pci: add driver pcieport-driver
Serial: 8250/16550 driver $Revision: 1.90 $ 1 ports, IRQ sharing enabled
SIVA sys_execve - filename=3D/sbin/hotplug.
SIVA sys_execve - filename=3D/sbin/hotplug.
bus platform: add driver serial8250
serial8250.0: ttyS0 at MMIO 0xff704500 (irq =3D 26) is a 16550A
bus pci: add driver serial
RAMDISK driver initialized: 16 RAM disks of 131072K size 1024 blocksize
loop: loaded (max 8 devices)
bus mdio_bus: add driver Vitesse VSC8244
Vitesse VSC8244: Registered new driver
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with
idebus=3Dxx
bus pci: add driver ALI15x3_IDE
SIVA sys_execve - filename=3D/sbin/hotplug.
bus ide: add driver ide-disk
bus ide: add driver ide-cdrom
bus scsi: add driver sd
bus pci: add driver ahci
bus platform: add driver fsl-i2c
bus i2c: add driver eeprom
TCP cubic registered
Initializing XFRM netlink socket
NET: Registered protocol family 1
NET: Registered protocol family 10
IPv6 over IPv4 tunneling driver
SIVA sys_execve - filename=3D/sbin/hotplug.
NET: Registered protocol family 17
RAMDISK: Compressed image found at block 0
VFS: Mounted root (ext2 filesystem).
Freeing unused kernel memory: 156k init
SIVA before run_init_process("/sbin/init").
SIVA sys_execve - filename=3D/sbin/init.
SIVA sys_execve - filename=3D/etc/rc.d/rcS.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/etc/rc.d/init.d/hostname.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/bin/echo.
SIVA sys_execve - filename=3D/bin/hostname.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/etc/rc.d/init.d/filesystems.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/bin/echo.
SIVA sys_execve - filename=3D/bin/mount.
SIVA sys_execve - filename=3D/bin/mount.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/bin/mount.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/bin/mount.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/bin/ln.
SIVA sys_execve - filename=3D/bin/mount.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/etc/rc.d/init.d/syslog.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/bin/echo.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/sbin/syslogd.
SIVA sys_execve - filename=3D/sbin/klogd.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/etc/rc.d/init.d/depmod.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/etc/rc.d/init.d/modules.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/etc/rc.d/init.d/network.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/bin/echo.
SIVA sys_execve - filename=3D/sbin/ifconfig.
SIVA sys_execve - filename=3D/sbin/route.
SIVA sys_execve - filename=3D/bin/rm.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/bin/echo.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/sbin/ifconfig.
SIVA sys_execve - filename=3D/sbin/modprobe.
SIVA sys_execve - filename=3D/sbin/modprobe.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/bin/echo.
SIVA sys_execve - filename=3D/sbin/route.
SIVA sys_execve - filename=3D/bin/sed.
SIVA sys_execve - filename=3D/bin/mv.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/bin/echo.
SIVA sys_execve - filename=3D/bin/echo.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/etc/rc.d/init.d/settime.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/bin/echo.
SIVA sys_execve - filename=3D/bin/echo.
SIVA sys_execve - filename=3D/bin/echo.
SIVA sys_execve - filename=3D/bin/touch.
SIVA sys_execve - filename=3D/bin/sleep.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/etc/rc.d/init.d/inetd.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/bin/echo.
SIVA sys_execve - filename=3D/usr/sbin/inetd.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/etc/rc.d/rc.local.
SIVA sys_execve - filename=3D/usr/bin/[.
SIVA sys_execve - filename=3D/sbin/getty.
SIVA sys_execve - filename=3D/sbin/getty.
SIVA sys_execve - filename=3D/sbin/getty.
SIVA sys_execve - filename=3D/sbin/getty.
SIVA sys_execve - filename=3D/sbin/getty.
SIVA sys_execve - filename=3D/sbin/getty.
SIVA sys_execve - filename=3D/sbin/getty.
SIVA sys_execve - filename=3D/sbin/getty.
SIVA sys_execve - filename=3D/sbin/getty.
SIVA sys_execve - filename=3D/sbin/getty.
- Siva
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: initrd - console
2007-12-11 1:26 initrd - console Siva Prasad
@ 2007-12-11 1:34 ` Michael Ellerman
2007-12-13 2:06 ` Siva Prasad
0 siblings, 1 reply; 3+ messages in thread
From: Michael Ellerman @ 2007-12-11 1:34 UTC (permalink / raw)
To: Siva Prasad; +Cc: linuxppc-dev, linuxppc-embedded
[-- Attachment #1: Type: text/plain, Size: 1284 bytes --]
On Mon, 2007-12-10 at 17:26 -0800, Siva Prasad wrote:
> Hi,
>
> I am trying to boot kernel with initrd. However, it hangs in
> run_init_process("/sbin/init"). I went into the system calls to see what
> it is doing.
>
> As part of debugging, I ended up adding a printk statement in
> arch/powerpc/kernel/process.c:sys_execve() routine. Noticed that all the
> calls are coming here, however nothing is printed on the screen. I think
> initrd is executing fine (unless one of you says otherwise). See the
> capture below for boot log.
>
> Question 1: how come nothing is printed from ramdisk (userland programs)
> to the serial console, while all the kernel printk's are working
> perfectly?
Do you have a /dev/console etc. in your initrd?
> Question 2: How important is to have interrupts working for just
> printing. I know that interrupts are must to enter input.
Depends on what your console is, but if it's something simple then you
should be able to write to it without taking interrupts.
cheers
--
Michael Ellerman
OzLabs, IBM Australia Development Lab
wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)
We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person
[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 189 bytes --]
^ permalink raw reply [flat|nested] 3+ messages in thread* RE: initrd - console
2007-12-11 1:34 ` Michael Ellerman
@ 2007-12-13 2:06 ` Siva Prasad
0 siblings, 0 replies; 3+ messages in thread
From: Siva Prasad @ 2007-12-13 2:06 UTC (permalink / raw)
To: michael; +Cc: linuxppc-dev, linuxppc-embedded
Thanks for the response Michael.
Yes!... I do have /dev/console
I also have the following line in /etc/inittab (::respawn:/sbin/getty -L
ttyS0 115200 VT100)
Still it does not print any thing from the user land. All the kernel
printk's are working fine.
I tried to print the arguments and environment variables for getty and
echo /dev/console. Below is the info.
sys_execve - filename=3D/sbin/getty.
copy_strings: kaddr =3D /sbin/getty.
copy_strings: kaddr =3D USER=3Droot.
copy_strings: kaddr =3D SHELL=3D/bin/sh.
copy_strings: kaddr =3D PATH=3D/usr/bin:/bin:/usr/sbin:/sbin.
copy_strings: kaddr =3D TERM=3Dvt102.
copy_strings: kaddr =3D HOME=3D/.
copy_strings: kaddr =3D VT100.
copy_strings: kaddr =3D 115200.
copy_strings: kaddr =3D ttyS0.
copy_strings: kaddr =3D -L.
copy_strings: kaddr =3D /sbin/getty.
sys_execve - filename=3D/bin/echo.
copy_strings: kaddr =3D /bin/echo.
copy_strings: kaddr =3D GATEWAY0=3D172.27.255.254.
copy_strings: kaddr =3D NETMASK0=3D255.255.0.0.
copy_strings: kaddr =3D PWD=3D/.
copy_strings: kaddr =3D SMBD_ARGS=3D.
copy_strings: kaddr =3D NAMESERVER0=3D172.27.0.1.
copy_strings: kaddr =3D NTP_SERVER=3D.
copy_strings: kaddr =3D SHELL=3D/bin/sh.
copy_strings: kaddr =3D INETD_ARGS=3D.
copy_strings: kaddr =3D BOA_ARGS=3D.
copy_strings: kaddr =3D NMBD_ARGS=3D.
copy_strings: kaddr =3D TMPFS=3Dtmpfs.
copy_strings: kaddr =3D PATH=3D/usr/bin:/bin:/usr/sbin:/sbin.
copy_strings: kaddr =3D READONLY_FS=3D.
copy_strings: kaddr =3D TERM=3Dvt102.
copy_strings: kaddr =3D MODLIST=3D.
copy_strings: kaddr =3D SYSCFG_IFACE0=3Dy.
copy_strings: kaddr =3D IPADDR0=3D172.27.180.41.
copy_strings: kaddr =3D DEPLOYMENT_STYLE=3DRAMDISK.
copy_strings: kaddr =3D SYSCFG_DHCPC_CMD=3Dudhcpc -b -i .
copy_strings: kaddr =3D DHCP_ARG=3D.
copy_strings: kaddr =3D RAMDIRS=3D.
copy_strings: kaddr =3D BROADCAST0=3D172.27.255.255.
copy_strings: kaddr =3D HOME=3D/.
copy_strings: kaddr =3D HOSTNAME=3Dmpc8641hpcn.
copy_strings: kaddr =3D USER=3Droot.
copy_strings: kaddr =3D INTERFACE0=3Deth0.
copy_strings: kaddr =3D /dev/console.
copy_strings: kaddr =3D echo.
Thanks
Siva
-----Original Message-----
From: Michael Ellerman [mailto:michael@ellerman.id.au]=20
Sent: Monday, December 10, 2007 5:34 PM
To: Siva Prasad
Cc: linuxppc-dev@ozlabs.org; linuxppc-embedded@ozlabs.org
Subject: Re: initrd - console
On Mon, 2007-12-10 at 17:26 -0800, Siva Prasad wrote:
> Hi,
>=20
> I am trying to boot kernel with initrd. However, it hangs in
> run_init_process("/sbin/init"). I went into the system calls to see
what
> it is doing.=20
>=20
> As part of debugging, I ended up adding a printk statement in
> arch/powerpc/kernel/process.c:sys_execve() routine. Noticed that all
the
> calls are coming here, however nothing is printed on the screen. I
think
> initrd is executing fine (unless one of you says otherwise). See the
> capture below for boot log.
>=20
> Question 1: how come nothing is printed from ramdisk (userland
programs)
> to the serial console, while all the kernel printk's are working
> perfectly?
Do you have a /dev/console etc. in your initrd?
> Question 2: How important is to have interrupts working for just
> printing. I know that interrupts are must to enter input.
Depends on what your console is, but if it's something simple then you
should be able to write to it without taking interrupts.
cheers
--=20
Michael Ellerman
OzLabs, IBM Australia Development Lab
wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)
We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2007-12-13 2:06 UTC | newest]
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2007-12-13 2:06 ` Siva Prasad
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