[U-Boot-Users] Re: FT u-boot shim

Wolfgang Denk wd at denx.de
Thu Apr 27 21:40:55 CEST 2006

In message <D358E665-60E4-48C0-82FD-7A1C16DAF00C at kernel.crashing.org> you wrote:
> The problem is that there are somethings that u-boot knows that needs  
> to go into the blob (memory size, boot args, initrd info,  
> frequencies, etc.)

Yes. Can we append auch variable data to the fixed part of the dts?

> How would we distinguish the bootm command that takes a blob versus  
> the ones we have today?

Arg count. For example:

OLD:	bootm <kernel_addr>
   or	bootm <kernel_addr> <ramdisk_addr>

NEW:	bootm <kernel_addr> - <dts_addr>
   or	bootm <kernel_addr> <ramdisk_addr> <dts_addr>

> As stated before, the main issue is doing some runtime fix ups to the  
> blob before its handed to the kernel.

Let's do exactly this: runtime fix ups.

> We could hand bootm a memory location with a blob and do the fix ups  
> at runtime, we would still have some coupling between the blob and u- 
> boot build.  At least the blob wouldn't be built into u-boot.


Best regards,

Wolfgang Denk

Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
It is necessary to have purpose.
	-- Alice #1, "I, Mudd", stardate 4513.3

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