Hi Wolfgang,
this is the console output at boot of my system. I'm usign MCF528x processor
and 2.6.x uClinux kernel of 2007/10/01. You can see the logs of root
partition mounting between "//************".
I´m adding ramdisk driver in kernel driver configuration, "ROM file system
support" in kernel file systems, and "sysfs file system support" in Pseudo
filesystems menu of kernel file system configuration. If you don´t select
sysfs, you must specify the mtd partition used for root. Do you select this
option? If not, please read sysfs help.
Some time ago I use 2.4.19 uClinux kernel. In that version of uClinux, the
root filesystem was not mounted as mtd device. So, there is something "new"
in uClinux. Probably you need other filesystem, but I hope that this
informacion can help you to solve the problem.
Regards
Alberto
ColdFire internal UART serial driver version 1.00
ttyS0 at 0x40000200 (irq = 77) is a builtin ColdFire UART
ttyS1 at 0x40000240 (irq = 78) is a builtin ColdFire UART
ttyS2 at 0x40000280 (irq = 79) is a builtin ColdFire UART
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
FEC ENET Version 0.2
fec: PHY @ 0x1, ID 0x0022561b -- AM79C874
eth0: ethernet 00:cf:52:55:fc:bc
PPP generic driver version 2.4.2
// *********************
uclinux[mtd]: RAM probe address=0x1b715c size=0x2d0000
Creating 1 MTD partitions on "RAM":
0x00000000-0x002d0000 : "ROMfs"
mtd: Giving out device 0 to ROMfs
uclinux[mtd]: set ROMfs to be root filesystem
// *********************
Number of erase regions: 3
Primary Vendor Command Set: 0002 (AMD/Fujitsu Standard)
Primary Algorithm Table at 0040
Alternative Vendor Command Set: 0000 (None)
No Alternate Algorithm Table
Vcc Minimum: 2.7 V
Vcc Maximum: 3.6 V
No Vpp line
Typical byte/word write timeout: 8 µs
Maximum byte/word write timeout: 256 µs
Full buffer write not supported
Typical block erase timeout: 512 ms
Maximum block erase timeout: 8192 ms
Chip erase not supported
Device size: 0x800000 bytes (8 MiB)
Flash Device Interface description: 0x0002
- supports x8 and x16 via BYTE# with asynchronous interface
Max. bytes in buffer write: 0x1
Number of Erase Block Regions: 3
Erase Region #0: BlockSize 0x2000 bytes, 8 blocks
Erase Region #1: BlockSize 0x10000 bytes, 126 blocks
Erase Region #2: BlockSize 0x2000 bytes, 8 blocks
MCF5282 flash: Found 1 x16 devices at 0x0 in 16-bit bank
MCF5282 flash: Found 1 x16 devices at 0x800000 in 16-bit bank
Amd/Fujitsu Extended Query Table at 0x0040
MCF5282 flash: CFI does not contain boot bank location. Assuming top.
number of CFI chips: 2
cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness.
MCF5282 flash device: 16MiB at 0xff000000
Creating 7 MTD partitions on "MCF5282 flash":
0x00000000-0x00010000 : "loader(64KB)"
mtd: Giving out device 1 to loader(64KB)
0x00010000-0x00400000 : "kernel (4032KB)"
mtd: Giving out device 2 to kernel (4032KB)
0x00400000-0x00480000 : "UserSpace1 (/user/) (512KB)"
mtd: Giving out device 3 to UserSpace1 (/user/) (512KB)
0x00480000-0x00500000 : "UserSpace2 (/user1/) (512KB)"
mtd: Giving out device 4 to UserSpace2 (/user1/) (512KB)
0x00500000-0x00800000 : "UserSpace3 (/user2/) (3MB)"
mtd: Giving out device 5 to UserSpace3 (/user2/) (3MB)
0x00800000-0x00c00000 : "UserSpace4 (/user3/) (4MB)"
mtd: Giving out device 6 to UserSpace4 (/user3/) (4MB)
0x00c00000-0x01000000 : "UserSpace5 (/user4/) (4MB)"
mtd: Giving out device 7 to UserSpace5 (/user4/) (4MB)
Netfilter messages via NETLINK v0.30.
nf_conntrack version 0.5.0 (256 buckets, 2048 max)
IPv4 over IPv4 tunneling driver
GRE over IPv4 tunneling driver
ip_tables: (C) 2000-2006 Netfilter Core Team
TCP cubic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
// *********************
VFS: Mounted root (romfs filesystem) readonly.
// *********************
Freeing unused kernel memory: 64k freed (0x195000 - 0x1a4000)
-----Mensaje original-----
De: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
En nombre de Wolfgang Wegner
Enviado el: miércoles, 28 de noviembre de 2007 8:35
Para: uClinux development list
Asunto: Re: [uClinux-dev] unable to use embedded initrd on MCF532x
Hi Gavin,
On Wed, Nov 28, 2007 at 10:06:14AM +1300, Gavin Lambert wrote:
>
> So have you tried adding a root= option like it suggested? (I'm
> presuming one of the partitions listed above is the root partition;
> certainly you're not including the "root FS appended to kernel image"
> uClinux mapping
> driver.)
I tried many different root= options of which I thought they might help.
What is this "root FS appended to kernel image" driver you mention?
I can not find it anywhere, neither in the general configuration where the
initramfs settings are nor in the MTD section.
I am more and more confused - is initramfs in newer uClinux completely
different than in the older kernels? I thought it is ramfs and handled by
ramdisk driver, and now you come up with a connection to mtd...?
Regards,
Wolfgang
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