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Old 06-30-2015, 12:59 AM   #1
Registered: May 2012
Posts: 111

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[u-boot] How to merge kernel + rootfs + dts to 1 file?

Dear Sir.

Every time thanks your advise.

I have a 3 file. see below

1. kernel image(zImage)
2. rootfs image(initrd)
3. DTB file

I'm want to merge this 3 files to 1 image file. that use mkimage utility.

I'm already know "how to use mkimage". my command see below

mkimage -A arm -T kernel -C none -a 0x20100000 -e 0x20100000 -n "my image" -d zImage rootfs.initrd my.dtb myimage.bin
And. I'm use the "bootm" command on u-boot(Ver 2015.01)

U-boot > tftp 0x22000000 myimage.bin
U-boot > bootm 0x22000000
But u-boot can't found rootfs.initrd and myimage.dtb in myimage.bin

Please advise to me.

PS1. I'm already success boot. But not merge 3 file to 1 file.
tftp 0x21000000 zImage
tftp 0x22000000 rootfs.initrd
tftp 0x23000000 my.dtb

U-boot > bootm 0x21000000 0x22000000 0x23000000
So, each image is correct for U-boot.

PS2. Another case. can't boot
 cat zImage my.dtb > tmp
 mkimage -A arm -T kernel -C none -a 0x20100000 -e 0x20100000 \
    -n "My image" \
    -d tmp my.image
U-boot > tftp 0x21000000 my.image
U-boot > bootm 0x21000000
## Booting kernel from Legacy Image at 21000000 ...
   Image Name:   My image
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    1515761 Bytes = 1.4 MiB
   Load Address: 20100000
   Entry Point:  20100000
   Verifying Checksum ... OK
   Loading Kernel Image ... OK
FDT and ATAGS support not compiled in - hanging
### ERROR ### Please RESET the board ###

Last edited by poplinux; 06-30-2015 at 01:10 AM.


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