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1. why the uclinux boot twice , and the first boot is diffrent from the second one
2. why it can't mount the romfs , i had programe the romfs into the flash from address 0x200000 3. i only have 4Mbytes flash memory , why microtronix said make the romfs from 0x200000 to 0x800000. the boot message is below: nios2-terminal: Warning: The JTAG cable you are using is not supported for Nios nios2-terminal: II systems. You may experience intermittent JTAG communication nios2-terminal: failures with this cable. Please use a USB Blaster revision B nios2-terminal: cable or another supported cable. Please refer to the file nios2-terminal: errata.txt included in the Nios II development kit documents nios2-terminal: directory for more information. nios2-terminal: connected to hardware target using JTAG UART on cable nios2-terminal: "ByteBlasterII [LPT1]", device 1, instance 0 nios2-terminal: (Use the IDE stop button or Ctrl-C to terminate) Linux version 2.6.11-uc0 (user@USER-E3A02B44B7) (gcc version 3.4.1 (Altera Nios II 5.0 b73))# 19 Sat Oct 22 14:50:14 2005 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: 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: 6364k/8192k RAM, 0k/0k ROM (1419k kernel code, 289k data) Mount-cache hash table entries: 512 (order: 0, 4096 bytes) NET: Registered protocol family 16 Serial: JTAG UART driver $Revision: 1.4 $ ttyJ0 at MMIO 0x80401880 (irq = 0) is a jtag_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 Microtronix map: Found 2 x8 devices at 0x0 in 16-bit bank Intel/Sharp Extended Query Table at 0x0031 Using buffer write method cfi_cmdset_0001: Erase suspend on write enabled cmdlinepart partition parsing not available RedBoot partition parsing not available Using Microtronix development partition definition Creating 2 MTD partitions on "Microtronix map": 0x00200000-0x00800000 : "romfs" 0x00000000-0x00200000 : "loader/kernel" NET: Registered protocol family 2 IP: routing cache hash table of 512 buckets, 4Kbytes TCP established hash table entries: 512 (order: 0, 4096 bytes) TCP bind hash table entries: 512 (order: -1, 2048 bytes) TCP: Hash tables configured (established 512 bind 512) NET: Registered protocol family 1 NET: Registered protocol family 17 Linux version 2.6.11-uc0 (user@USER-E3A02B44B7) (gcc version 3.4.1 (Altera Nios II 5.0 b73))# 19 Sat Oct 22 14:50:14 2005 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: 128 (order: 7, 2048 bytes) Dentry cache hash table entries: 4096 (order: 2, 16384 bytes) Inode-cache hash table entries: 2048 (order: 1, 8192 bytes) Memory available: 6352k/8192k RAM, 0k/0k ROM (1419k kernel code, 289k data) Mount-cache hash table entries: 512 (order: 0, 4096 bytes) Kernel panic - not syncing: Can't create rootfsLink Copied
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