How to use jffs2 in flash ?

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originally posted by hippo@Jun 3 2006, 08:14 AM

a1. you can try root jffs2 now with kernel command string.

a2. you need to use mkfs.jffs2. you may read jdhar's epcs guide.

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hi hippo

I meet the same problem again.

This is my processing setps as follows:

1. I don&#39;t use initramfs and add "root=/dev/mtdblock0 rw rootfs=jffs2" string in kernel command line.

2. Rebuild kernel to generate new zImage.

3. Download zImage in sdk shell

4. Use "nios2-terminal" command to input uclinux OS.

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uClinux/Nios II

Altera Nios II support © 2004 Microtronix Datacom Ltd.

Built 1 zonelists

Kernel command line: root=/dev/mtdblock0 rw rootfs=jffs2

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: 6768k/8192k RAM, 0k/0k ROM (1185k kernel code, 144k data)

Mount-cache hash table entries: 512

SCSI subsystem initialized

usbcore: registered new driver usbfs

usbcore: registered new driver hub

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 0x80481120 (irq = 1) is a jtag_uart

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 1 MTD partitions on "Altera NDK flash (AMD)":

0x00000000-0x00400000 : "jffs2"

usbmon: debugfs is not available

driver isp1362-hcd, 2005-04-04

isp1362-hcd isp1362-hcd: ISP1362 Host Controller

isp1362_hc_reset:

isp1362-hcd isp1362-hcd: new USB bus registered, assigned bus number 1

isp1362-hcd isp1362-hcd: irq 4, io mem 0x804810d0

isp1362_hc_start:

isp1362-hcd isp1362-hcd: ISP1362 Memory usage:

isp1362-hcd isp1362-hcd: ISTL: 2 * 256: 512 @ $0000:$0100

isp1362-hcd isp1362-hcd: INTL: 16 * ( 64+8): 1152 @ $0200

isp1362-hcd isp1362-hcd: ATL : 32 * ( 64+8): 2304 @ $0680

isp1362-hcd isp1362-hcd: USED/FREE: 3968 128

usb usb1: configuration# 1 chosen from 1 choice

hub 1-0:1.0: USB hub found

hub 1-0:1.0: 2 ports detected

ISP1362 Host Controller, irq 4

Initializing USB Mass Storage driver...

usbcore: registered new driver usb-storage

USB Mass Storage support registered.

Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(31,0)[/b]

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How to solve it ?

Thx !