Booting AM3517 From NAND.

I think you are wrong with the assumption that a new NAND does contain any data. Actually it will your task to flash the NAND with application and or boot code.

As long as you haven't done that the processor will just be idling around... For the SOMs this is done by the board manufacturer as an additional service.

Regards.

i want to know build process for uboot for custom board

so far i have found process for building uboot for  boards  whos  <boardname>_defconfig is given

how to build  _defconfig

Hi Siddharth,

root#make ARCH=arm help

use this command on u-boot and this command will give various options for board specific packages for compiling kernel.

Which is your custom board..Please enter some details

Thanks and Regards

Hrishikesh.

Siddharth,

By Mistake i have written it is U-boot prompt...it is your linux prompt

hi

thank you for replying

i am using crane board to design my own board

i want to know how to develop uboot for custome board???

i have read about Board Support Package.Is it similar to boot code or is it driving boot code???

i am not clear about BSP and not understanding how to develop uboot for custome board.

the command which u told i tried it and got following result

root@anapc01:~# make ARCH=arm --help
Usage: make [options] [target] ...
Options:
  -b, -m                      Ignored for compatibility.
  -B, --always-make           Unconditionally make all targets.
  -C DIRECTORY, --directory=DIRECTORY
                              Change to DIRECTORY before doing anything.
  -d                          Print lots of debugging information.
  --debug[=FLAGS]             Print various types of debugging information.
  -e, --environment-overrides
                              Environment variables override makefiles.
  -f FILE, --file=FILE, --makefile=FILE
                              Read FILE as a makefile.
  -h, --help                  Print this message and exit.
  -i, --ignore-errors         Ignore errors from commands.
  -I DIRECTORY, --include-dir=DIRECTORY
                              Search DIRECTORY for included makefiles.
  -j [N], --jobs[=N]          Allow N jobs at once; infinite jobs with no arg.
  -k, --keep-going            Keep going when some targets can't be made.
  -l [N], --load-average[=N], --max-load[=N]
                              Don't start multiple jobs unless load is below N.
  -L, --check-symlink-times   Use the latest mtime between symlinks and target.
  -n, --just-print, --dry-run, --recon
                              Don't actually run any commands; just print them.
  -o FILE, --old-file=FILE, --assume-old=FILE
                              Consider FILE to be very old and don't remake it.
  -p, --print-data-base       Print make's internal database.
  -q, --question              Run no commands; exit status says if up to date.
  -r, --no-builtin-rules      Disable the built-in implicit rules.
  -R, --no-builtin-variables  Disable the built-in variable settings.
  -s, --silent, --quiet       Don't echo commands.
  -S, --no-keep-going, --stop
                              Turns off -k.
  -t, --touch                 Touch targets instead of remaking them.
  -v, --version               Print the version number of make and exit.
  -w, --print-directory       Print the current directory.
  --no-print-directory        Turn off -w, even if it was turned on implicitly.
  -W FILE, --what-if=FILE, --new-file=FILE, --assume-new=FILE
                              Consider FILE to be infinitely new.
  --warn-undefined-variables  Warn when an undefined variable is referenced

not understanding where which option is for BSP selection.

i am new to these things and have very less knowledge about it ur help will be very useful

Thank you

I have some experience with TAM-3517 custom board..Sorry i am not aware of The board u have ...This is not the expected output...u have to traverse the kernel source location

root#cd /home/Linux/Kernel 2.6.xx

root#make ARCH=arm help

no need of putting of --...this command will give u the board specific configuration .config file..which has been already configured for board...then use this one using cross compile toolchain..u can compile this.

Make sure this command will show some files like .. Tam3517_defconfig and other similar names of board.

if want to manually configure kernel according to your requirements..bt this is very difficult needs lot of modification..

root#cd to kernel source

root#make menuconfig

Thanks and regards

Hrishikesh.

Siddharth,

Also try posting your problem with New post may be some expert people from TI can help you.

Thanks and Regards

hrishikesh.

Hi Siddharth,

          Have you installed the necessary toolchain for compiling the sources.

          The procedure for the same and building images for CraneBoard can be found from the below link:

            http://processors.wiki.ti.com/index.php/Building_images_for_CraneBoard

Regards,
N.S.SriHarsha

Hi 

Followed the steps given in following website and i could make MLO,u-boot.bin,uImage.

http://processors.wiki.ti.com/index.php/Building_images_for_CraneBoard

various command used are as follows:

make CROSS_COMPILE=arm-none-linux-gnueabi- ARCH=arm am3517crane_config (to make MLO)

make CROSS_COMPILE=arm-none-linux-gnueabi- ARCH=arm am3517_crane_config (to make u-boot)

make CROSS_COMPILE=arm-none-linux-gnueabi- ARCH=arm am3517_crane_defconfig (to make uImage)

I want to know how to generate am3517crane_config,am3517_crane_config,am3517_crane_defconfig .

Hi Siddharth,

           These are the configurations needed to build the images and are mentioned in the MAKEFILE of the respective directories.You can grep the same in MAKEFILE for much information on the same.

Regards,

N.S.SriHarsha

Hi SriHarsha

U-BOOT:

    I went throug Readme of uboot and found how to create uboot.bin for custome board with supported architecture.I considered crane board as custome board and took board files.

I took am3517_crane.h and made copy of it as am3517_crane1.h

also took board files am3517crane and made copy of it as am3517crane1 and replaced inside files by board name like am3517crane1.c,am3517crane1.h

and added following line to Uboot top Make file

am3517_crane1_config :    unconfig
    @$(MKCONFIG) $(@:_config=) arm arm_cortexa8 am3517crane1 ti omap3

After doing all this I tried

make CROSS_COMPILE=arm-none-linux-gnueabi- ARCH=arm distclean

make CROSS_COMPILE=arm-none-linux-gnueabi- ARCH=arm am3517_crane_config

make CROSS_COMPILE=arm-none-linux-gnueabi- ARCH=arm all

and I got uboot.bin,uboot,uboot.srec.

I want to know is this the correct process of generating uboot.bin for custome board????

X-LOAD:

I tried to generate xload.bin in similar way as i did in uboot but not able to generate xload.bin

I am getting errors as

x-load/board/am3517crane1/am3517crane1.c:791: undefined reference to `nand_chip'

x-load/lib/board.c:93: undefined reference to `nand_read_block'

Is there any different process for generating xload.bin????? or am i doing somthing wrong???

Can you please tell me??

Thank you