Hello, I've made a port of u-boot-1.3.1 to a WindRiver sbc8256 board with CONFIG_OF_LIBFDT defined. Is the dtc-1.0.0 usable along with the U-boot version 1.3.1 or do I need to get a newer dtc?
Cheers // Matias
jie han wrote:
What's different between CONFIG_OF_LIBFDT and CONFIG_OF_FLAT_TREE?
CONFIG_OF_FLAT_TREE was the original FDT interface code and had a ...uh... funky interface. David Gibson wrote a FDT library intended for embedded use and CONFIG_OF_LIBFDT uses that. We've been switching processors/boards over. I believe the switchover is mostly complete.
My board is mpc8641d and u-boot version is 1.3.1.
No direct experience, but I believe that is good. Is this a custom board or an eval board? If it is a custom board, you will need to generate an appropriate *.dts file by customizing an example.
I f I define CONFIG_OF_FLAT_TREE,and u-boot command bootm will call ft_setup() function, and how is it work?
With CONFIG_OF_LIBFDT, bootm calls the appropriate board and processor setup routines fdt_chosen() and ft_board_setup().
Note that CONFIG_OF_LIBFDT adds the "fdt" command which is very helpful for printing out out (and modifying) blob data.
I found DTS files under kernel /arch/powerpc/sysDev directory,Could you give me some advice how to build it?
You need to build the device tree compiler (dtc). You can get the source from Jon Loeliger's repository: http://jdl.com/git_repos/
Thanks, Jie
[snip]
gvb
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