linux 2.6.23 kernel for nxc2620 dvk 3.2 (mipsel)

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linux 2.6 installation for NXC2600 Platform

1. files:

   u-boot.bin : bootloader for nor flash. u-boot-nand.bin : bootloader for nand flash. uImage.kernel : linux kernel. rootfs.img : initrd. rootfs_init.img : tftp install. nxc2600-nfsroot-20090515.tar.bz2 : nfsroot system. nxc2600-nand-20090515.tar.bz2 : nand root filesystem. rt73-cvs-2007111600.tar.bz2 : ralink rt2571wf driver.

   linux-2.6.23-NXC2600-0.5.0-20090515-patch.bz2 : linux kernel patch u-boot-1.2.0-NXC2600-0.5.0-20090428-20090429-patch.bz2 : bootloader patch mipsel-linux-nxc2600-20080904.tar.bz2 : toolchain

2. install bootloader:

   2.1. set uart port0 params to 57600/8N1.

   2.2. first time install when no bootloader in flash:

    use jtag to program bootloader into flash.
   
    for nor flash in jtag: 
   
        JDI>erase 0xbfc00000 0x10000 4
        JDI>prog 0xbfc00000 192.168.1.60 u-boot.bin
   
    for nand flash in jtag:
   
        JDI>nerase 0 4
        JDI>nprog 0 192.168.1.60 u-boot-nand.bin
   

   2.3. by default the bootloader params are:

    host ip	: 192.168.1.3
    server ip: 192.168.1.60
   
    change host ip:
    	
        NXC2600# set ipaddr 192.168.x.x
        NXC2600# save
   
    change server ip:
   
        NXC2600# set serverip 192.168.x.x
        NXC2600# save
   

   2.4. if you want to upgrade bootloader in bootloader:

      copy a new bootloader into /tftpboot in your tftp server, 
    and startup tftp server then enter:
   
        NXC2600# run update_b
   
    NOTE: if you use nand flash and program failed in any errors,
                  just try again and again until it successful.
   

3. install linux kernel:

   Before this step, you must setup your network settings, see 2.3.

   then copy the file "uImage.kernel" into /tftpboot and startup your tftp server.

   when all settings are down, you can upgrade linux kernel by:

      NXC2600# run update_k
   

   When you enter "run update_k", the tftp program will automatic downloading over tftp protocol, and waitting untill download compeleted and program into flash.

   NOTE: if you use nand flash and program failed in any errors, just try again and again until it successful.

4. install initrd:

      Before this step, you must setup your network settings, see 2.3.
   
      then copy the file "rootfs.img" into /tftpboot and
    startup your tftp server.
   
      when all settings are down, you can upgrade initrd by:
   
           NXC2600# run update_r
   
      When you enter "run update_r", the tftp program
    will automatic downloading over tftp protocol, and waitting
    untill download compeleted and program into flash.
   
      NOTE: if you use nand flash and program failed in any errors,
            just try again and again until it successful.
   

5. install nfsroot

    the default nfsroot entry is "/nfsroot/nxc2600"
   
    #tar jxvf /path/to/nxc2600-nfsroot-20090515.tar.bz2 -C /nfsroot
   

6. linux bootup commands:

   6.1. normal bootup: (by default, boot to nand)

    NXC2600# run defaultboot
   

   6.2. nfs root bootup:

    NXC2600# run nfsboot
   

   by default the nfsroot entry is "serverip:/nfsroot/nxc2600". change entry by:

    NXC2600# set nfsroot /path/to/nfsroot
    NXC2600# save
   

   6.3. boot into nand:

    NXC2600# run nandboot
   

7. install root filesystem:

    7.1. sd card root filesystem is not longer support.
    7.2. in nand flash, boot into nfsroot first :
   
        7.2.1. untar the file "nxc2600-nand-20090515.tar.bz2" on server side.
   
            #tar jxvf /path/to/nxc2600-nand-20090515.tar.bz2 -C /nfsroot/nxc2600
   
        7.2.2. copy all files into nand on nxc2600 dvb, you need to bootup into nfsroot mode to do this.
   
            #/tool/install_nand.sh
   

8. install toolchain:

    #tar jxvf /path/to/mipsel-linux-nxc2600-20080904.tar.bz2 -C /
    #set PATH=$PATH:/opt/toolchain/mipsel-linux/bin
   

9. create a new linux kernel:

   download kernel(2.6.23) form http://kernel.org then

    #cd /path/to/linux-2.6.23
    #bzcat /path/to/linux-2.6.23-NXC2600-0.5.0-20090515-patch.bz2 |patch -p1
    #cp arch/mips/defconfig .config
    #make menuconfig
       select LCD type
    #make uImage
   

   after "make uImage", the default setting will copy "arch/mips/boot/uImage" to /tftpboot/uImage.kernel".

10. create a new bootloader:

    download u-boot(1.2.0) form http://www.denx.de/wiki/UBoot

    #cd /path/to/u-boot-1.2.0
    #bzcat /path/to/u-boot-1.2.0-NXC2600-0.5.0-20090428-20090429-patch.bz2 |patch -p1
    

    for nor flash:

    #cd /path/to/u-boot-1.2.0
    #make distclean
    #make nxc2600_dvb2_config
    #make
    #cp u-boot.bin /tftpboot/
    

    for nand flash:

    #cd /path/to/u-boot-1.2.0
    #make distclean
    #make nxc2600_dvb3_nand_config
    #make
    #cp u-boot-nand.bin /tftpboot/