Honored Contributor
Honored ContributorHi Scott,
I have re-built the kernel with JFFS2 filesystem selected and the system boot as below: uClinux/Nios II Altera Nios II support © 2004 Microtronix Datacom Ltd. Built 1 zonelists Kernel command line: root=/dev/mtdblock0 ro PID hash table entries: 256 (order: 8, 4096 bytes) Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) Inode-cache hash table entries: 4096 (order: 2, 16384 bytes) Memory available: 30528k/32768k RAM, 0k/0k ROM (1567k kernel code, 302k data) Mount-cache hash table entries: 512 (order: 0, 4096 bytes) NET: Registered protocol family 16 JFFS2 version 2.2. © 2001-2003 Red Hat, Inc. JFFS2: default compression mode: priority NIOS serial driver version 0.0 ttyS0 (irq = 4) is a builtin NIOS UART io scheduler noop registered io scheduler anticipatory registered io scheduler deadline registered io scheduler cfq registered RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize smc_probe: 85000 Khz Nios SMSC LAN91C111 Driver (v2.1), (Linux Kernel 2.6) eth0: SMC91C11xFD(rev:1) at 0x82210300 IRQ:6 MEMSIZE:8192b NOWAIT:0 ADDR: 00:07:ed:0f:63:08 smc_probe: 85000 Khz Nios Altera NDK flash (AMD): Found 1 x16 devices at 0x0 in 8-bit bank Amd/Fujitsu Extended Query Table at 0x0040 Altera NDK flash (AMD): CFI does not contain boot bank location. Assuming top. 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" 0x00000000-0x00200000 : "loader/kernel" 0x00600000-0x00700000 : "User configuration" 0x00700000-0x00800000 : "safe configuration" microtronix[mtd]: RAM probe address=0x200000 size=0x3f8000 Creating 1 MTD partitions on "RAM": 0x00000000-0x003f8000 : "ROMfs" microtronix[mtd]: set ROMfs to be root filesystem NET: Registered protocol family 2 IP: routing cache hash table of 512 buckets, 4Kbytes TCP established hash table entries: 2048 (order: 2, 16384 bytes) TCP bind hash table entries: 2048 (order: 1, 8192 bytes) TCP: Hash tables configured (established 2048 bind 2048) NET: Registered protocol family 1 NET: Registered protocol family 17 VFS: Mounted root (romfs filesystem) readonly. Freeing unused kernel memory: 64k freed (0x41b2000 - 0x41c1000) expand: from=/ramfs.img to=/dev/ram0 expand: from=/ramfs.img to=/dev/ram1 eth0:PHY 100BaseT eth0:PHY Full Duplex /etc/issue www.microtronix.com June 2005 Welcome to Linux on the Nios II Nios2 login: root Password: # cat /proc/mtd dev: size erasesize name mtd0: 00400000 00010000 "romfs/jffs2" mtd1: 00200000 00010000 "loader/kernel" mtd2: 00100000 00010000 "User configuration" mtd3: 00100000 00010000 "safe configuration" mtd4: 003f8000 00001000 "ROMfs"# I have two questions: 1. I didn’t see any mtd device file create in /dev. Did I missing some procedures? 2. Need I create the mtd-utils with kernel? 3. What difference between ROMfs and romfs/jffs2 in boot report? Thanks in advance. Best regards,
