about memory problem for uclinux....

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originally posted by jay_1025@Apr 27 2006, 04:28 PM

hi hippo

i have built a rootfs in ~/rootfs/mnt dir and rebuilt kernel successfully.

then i can't work under uclinux system. i find some wrong information to know from booting messages,

and how should i edit memory address of my flash ?

my booting info following:

altera nios ii support © 2004 microtronix datacom ltd.

setup_arch: no persistant network settings signature at 008f0000

built 1 zonelists

kernel command line: root=/dev/mtdblock0

pid hash table entries: 64 (order: 6, 1024 bytes)

dentry cache hash table entries: 2048 (order: 1, 8192 bytes)

inode-cache hash table entries: 1024 (order: 0, 4096 bytes)

memory available: 6284k/8192k ram, 0k/0k rom (1649k kernel code, 166k data)

mount-cache hash table entries: 512

net: registered protocol family 16

scsi subsystem initialized

jffs2 version 2.2. (nand) © 2001-2003 red hat, inc.

io scheduler noop registered

io scheduler deadline registered (default)

serial: jtag uart driver $revision: 1.4 $

ttyj0 at mmio 0x81004000 (irq = 1) is a jtag_uart

dmfe_probe:eth0, 50000 khz nios

<dm9000> eth0 i/o: 80900090, vid: 90000a46

addr: 00:07:ed:00:00:00

dmfe_probe:eth1, 50000 khz nios

altera ndk flash (amd): found 1 x16 devices at 0x0 in 8-bit bank

amd/fujitsu extended query table at 0x0040

number of cfi chips: 1

cfi_cmdset_0002: disabling erase-suspend-program due to code brokenness.

cmdlinepart partition parsing not available

redboot partition parsing not available

using altera ndk partition definition

creating 4 mtd partitions on "altera ndk flash (amd)":

0x00200000-0x00600000 : "romfs/jffs2"

mtd: partition "romfs/jffs2" extends beyond the end of device "altera ndk flash

(amd)" -- size truncated to 0x200000

0x00000000-0x00200000 : "loader/kernel"

0x00600000-0x00700000 : "user configuration"

mtd: partition "user configuration" is out of reach -- disabled

0x00700000-0x00800000 : "safe configuration"

mtd: partition "safe configuration" is out of reach -- disabled

net: registered protocol family 2

ip route cache hash table entries: 128 (order: -3, 512 bytes)

tcp established hash table entries: 512 (order: -1, 2048 bytes)

tcp bind hash table entries: 512 (order: -1, 2048 bytes)

tcp: hash tables configured (established 512 bind 512)

tcp reno registered

tcp bic registered

net: registered protocol family 1

net: registered protocol family 10

ipv6 over ipv4 tunneling driver

net: registered protocol family 17

kernel panic - not syncing: vfs: unable to mount root fs on unknown-bloc(0,0) http://forum.niosforum.com/work2/style_emoticons/<#emo_dir#>/sad.gif

thx in advance !

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You should do it in two steps.

First, with normal initramfs, and no kernel command line.

Edit drivers/mtd/maps/altera.c , to the offset and size of your cfi flash. Remove unused mtd parts.

Rebuild zImage, and check if mtd is detected correctly.

If mtdblock0 is correct, then try mount it as jffs2, copy the rootfs. And then reboot again, to verify if all the data is correct.

If all work without problems, then do the step2, rootfs to your mtd.