From eLinux.org
Revision as of 09:07, 23 May 2010 by Alokprasad (Talk | contribs)

Jump to: navigation, search

Camera Interface

Q: How can I use/test camera interface of Hawkboard?

A: Due to color space issues it is a little bit tricky at the moment. Not much software supports it out of the box. You can find test procedure here


Q:How to see Kernel Message for debugging Purpose?

A:You can use earlyprintk=serial,uart0,115200 or earlyprintk=vga in bootargs,you will also need to enable that in kernel by enabling CONFIG_EARLY_PRINTK (CONFIG_DEBUG_LL, CONFIG_DEBUG_KERNEL) or

 Linux Kernel Configuration
     Kernel hacking  --->
       [*] Early printk

Q:I need support for 800x600 Resolution ?

A:Apply following changes in drivers/video/da8xx-fb.c

   /* CRT Monitor or LCD Screen */
      [2] = {
 	.name = "VGA_Monitor",
               .width = 800,
 	        .height = 600,
 		.hfp = 48,
 		.hbp = 80,
 		.hsw = 32,
 		.vfp = 3,
 		.vbp = 11,
 		.vsw = 4,
 		.pxl_clk = 37000000,
 		.invert_pxl_clk = 1,

A precompiled uImage with 800X600 Support can be downloaded from here

Q:How do i compile the Kernel ?

A:Assuming you have setup the cross compiler as mentioned in the http://elinux.org/Hawkboard/Programming_Guide_-Linux(ARM)#1.Codesourcery_Toolchain Download Linux kernel Source from here Extract it . To compile follow steps below :

 export PATH=/home/<user>/arm-2009q3/bin:$PATH
 cd linux-omapl1
 make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi- omapl138_hawkboard_defconfig uImage

This will create uImage in arch/arm/boot.

You may want to clear existing makes using

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

Note:To create uImage ,you need uboot-mkimage package which can be installed using apt-get.


Q:I am not getting U-BOOT Prompt/How do i recovery U-Boot ?

A:Please see recovery guide to Reflash uboot on Hawkboard Here

Q:How to Do i autoboot Hawkboard with my RootFS on USB Drive.?

A:To Autoboot hawkboard kernel must reside on NAND & follow these

 setenv serverip
 setenv ipaddr 
 tftpboot 0xc0700000 u-boot_nand_ais_v1.bin
 nand erase
 nand write.e 0xc0700000 0x20000 0x70000
 tftp c0700000 uImage
 nand write.e 0xc0700000 0x200000 0x200000
 setenv bootargs console=ttyS2,115200n8 console=tty1 noinitrd root=/dev/sda rootwait rw init=/sbin/init
 setenv bootcmd "setenv console=ttyS2,115200n8 console=tty1 noinitrd root=/dev/sda1 rootwait rw init=/sbin/init;nand read.e 0xc0700000 0x200000 0x200000;bootm 0xc0700000"

Q:How Do i flash NAND with U-Boot without using TI's Host Utility or any Linux Application exists?

A:You will need Mono package (DOT NET implementation for Linux) & dvflashutils .Check below for more details http://processors.wiki.ti.com/index.php?title=Serial_Boot_and_Flash_Loading_Utility

Q:Is there alternative to Load uImage beside TFTP or Flashing to NAND

A:Yes there two more methods you could do

  1. Transfer uImage through NFS using:
 hawkboard.org > nfs 0xc0700000
 hawkboard.org > setenv bootargs ....
 hawkboard.org > bootm c0700000
  1. Transferring uImage through Serial Interface using Ymodem protocol

Check this thread http://groups.google.com/group/hawkboard/browse_thread/thread/ecc57e1b964bc2c4/b0e1ad260a226bd1?lnk=gst&q=ymodem

Ubuntu Rootfs

Q:How to Do i installed new packages in ubuntu jaunty rootfs?

A:If you have made the rootfs using rootstock with "apt" as one of Seed paramter than you can use "apt-get install <package_name> to install required package.

Angstrom Rootfs

Q:Whats the Default username/password for Rootfs created by angstrom narcissus.?

A:User name is root and no password

Q:How to login in X11 in angstrom rootfs?

A:Login in console using root and no password.Change password using passwd .Now you can login to X11 using root and newpassword

Booting Errors

Q:I am getting "Kernel panic - not syncing: VFS: Unable to mount root fs ..." error how to resolve this?

A:Kernel panic occurs when kernel is not able to find rootfs(init program ),either the bootargs is not correct or source of rootfs is not available.


Q:How do i start with DSP Programming on Hawkboard?

A:Read Thread

  1. http://groups.google.com/group/hawkboard/browse_thread/thread/3534c1590940688c/f7118c18635d8275
  2. http://groups.google.com/group/hawkboard/browse_thread/thread/661c1ce0f342b1f8/d4d617831983b78d


Q:Does Hawkboard support SDHC Card?

A:Yes ,it supports SD & SDHC Card.