Hello,
I have an i.MX28 EVK board and used the script mk_mx28_sd to load uboot (ixm28_ivt_uboot.sb) on the SD card. The SD card is loaded on the second partition.
The File system is loaded on the third partition.
I would like to know how can I configure UBOOT to be able to boot the kernel from the SD card. perhaps i nee to change the partition on the SD card?
By default UBOOT will try to find and boot the kernel from the network.
Thanks for your help,
:-)
Hi All,
I tried this steps for another way and it is working on L2.6.35_10.12.01.
root@william-desktop:~# fdisk -u /dev/sdb
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First sector (62-7744511, default 62): 16384
Last sector, +sectors or +size{K,M,G} (16384-7744511, default 7744511): 1064960
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 2
First sector (62-7744511, default 62): 1064961
Last sector, +sectors or +size{K,M,G} (1064961-7744511, default 7744511): 1081345
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 3
First sector (62-7744511, default 62): 1081346
Last sector, +sectors or +size{K,M,G} (1081346-7744511, default 7744511):
Using default value 7744511
Command (m for help): t
Partition number (1-4): 2
Hex code (type L to list codes): 53
Changed system type of partition 2 to 53 (OnTrack DM6 Aux3)
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
time sudo ./sdimage -f ./imx28_ivt_uboot.sb -d /dev/sdb
time sudo dd if=./uImage of=/dev/sdb bs=512 seek=256 conv=sync,notrunc
time sudo dd if=./rootfs.ext2 of=/dev/sdb3 bs=2048;sync
MX28 U-Boot > run bootcmd_mmc
Hi All,
So I was able to solve this problem. This is the solution for anybody that may be interested (I'm using a 3.2.1 kernel):
1) Create 4 partitions on your SD card. from your development machine you will probably have something like this:
/dev/sdb1
/dev/sdb2
/dev/sdb3
/dev/sdb4
2) the sizes of my partitions are:
/dev/sdb1 : 32 MB
/dev/sdb2: 32 MB
/dev/sdb3: 50 MB
/dev/sdb4: The remaining space
4) Load U-Boot (imx28_ivt_uboot.sb) on the second partition: /dev/sdb2
5) Load your new kernel (uImage) on the third partition: /dev/sdb3
5) Load the file system on the fourth partition: /dev/sdb4
6) boot the device
7) Enter into U-BOOT
8) Change the bootcmd and the bootargs. From in U-BOOT your command should look like this:
setenv bootcmd 'fatload mmc 0:3 0x42000000 uImage; bootm 0x42000000'
setenv bootargs 'console=ttyAMA0, 115200 root=/dev/mmcblk0p4 rootfs=ext3 rw rootwait"
saveenv
9) reboot
If anybody as a question concerning these steps please feel free to ask.
Take care,
:-)