From: Jerry Van Baren <gerald.vanbaren@smiths-aerospace•com>
To: Timur Tabi <timur@freescale•com>
Cc: linuxppc-dev@ozlabs•org
Subject: Re: [PATCH 10/17] bootwrapper: Add dt_set_mac_addresses().
Date: Wed, 21 Mar 2007 11:25:30 -0400 [thread overview]
Message-ID: <46014E6A.90002@smiths-aerospace.com> (raw)
In-Reply-To: <460148DC.3020600@freescale.com>
Timur Tabi wrote:
> David Gibson wrote:
>
>> Ah, and it can't add the property if it's not there at all. Ok, I
>> think I understand now. But.. does u-boot directly use the dts files
>> from the kernel tree, or does it have its own copies?
>
> I'm not sure what you mean by that. You compile the DTS into a DTB, and
> then make the DTB available to U-Boot. That can mean either storing it
> in flash, or tftp'ing it into memory. When you boot Linux via the
> U-Boot "bootm" command, you give it the address of the DTB in memory.
> U-Boot than looks for various things and updates them. It also creates
> a couple new things, like a 'chosen' section.
>
> If the DTB is in flash, it copies it to RAM. Then it updates the
> in-memory copy. It's very hack-ish, though. I think it just overwrites
> various nodes as it pleases, and then reconnects everything.
FWIIW, I'm getting close to having a usable implementation of a new
u-boot command "fdt" that is a lot cleaner than the hack-ish automagical
bootm copying and updating (and uses libfdt - thanks, David!). I just
sent an update this morning:
<http://article.gmane.org/gmane.comp.boot-loaders.u-boot/27187>
[snip]
Best regards,
gvb
next prev parent reply other threads:[~2007-03-21 15:25 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-16 17:26 [PATCH 00/17] bootwrapper/cuImage patches Scott Wood
2007-03-16 17:27 ` [PATCH 01/17] bootwrapper: Make ft_create_node() pay attention to the parent parameter Scott Wood
2007-03-17 1:23 ` David Gibson
2007-03-16 17:27 ` [PATCH 02/17] bootwrapper: Add dt_ops methods Scott Wood
2007-03-17 1:24 ` David Gibson
2007-03-16 17:27 ` [PATCH 03/17] bootwrapper: Add xlate_reg(), and use it to find serial registers Scott Wood
2007-03-20 3:50 ` David Gibson
2007-03-20 16:34 ` Scott Wood
2007-03-21 3:12 ` David Gibson
2007-03-21 13:49 ` Segher Boessenkool
2007-03-21 16:01 ` Scott Wood
2007-03-21 19:11 ` Segher Boessenkool
2007-03-16 17:27 ` [PATCH 04/17] bootwrapper: Make compression of the kernel image optional Scott Wood
2007-03-17 1:25 ` David Gibson
2007-03-21 15:03 ` Patch: " Milton Miller
2007-03-16 17:28 ` [PATCH 05/17] bootwrapper: misc device tree fixes Scott Wood
2007-03-21 1:51 ` David Gibson
2007-03-22 16:22 ` Scott Wood
2007-03-23 3:26 ` David Gibson
2007-03-21 13:22 ` Segher Boessenkool
2007-03-16 17:28 ` [PATCH 06/17] Document the linux,network-index property Scott Wood
2007-03-17 1:26 ` David Gibson
2007-03-21 13:30 ` Segher Boessenkool
2007-03-21 14:48 ` Yoder Stuart-B08248
2007-03-21 18:57 ` Segher Boessenkool
2007-03-22 0:29 ` David Gibson
2007-03-22 11:11 ` Segher Boessenkool
2007-03-23 3:19 ` David Gibson
2007-03-23 11:36 ` Segher Boessenkool
2007-03-23 23:59 ` David Gibson
2007-03-24 0:23 ` Segher Boessenkool
2007-03-23 15:00 ` Scott Wood
2007-03-23 16:42 ` Segher Boessenkool
2007-03-16 17:28 ` [PATCH 07/17] bootwrapper: Add dt_set_memory(), to fill in the /memory node Scott Wood
2007-03-17 1:26 ` David Gibson
2007-03-21 13:32 ` Segher Boessenkool
2007-03-21 23:42 ` David Gibson
2007-03-22 11:02 ` Segher Boessenkool
2007-03-23 3:24 ` David Gibson
2007-03-23 6:49 ` Stefan Roese
2007-03-23 7:40 ` David Gibson
2007-03-23 12:34 ` Segher Boessenkool
2007-03-16 17:28 ` [PATCH 08/17] bootwrapper: Make setprop accept a const buffer Scott Wood
2007-03-17 1:27 ` David Gibson
2007-03-16 17:28 ` [PATCH 09/17] bootwrapper: Add dt_set_cpu_clocks() Scott Wood
2007-03-17 1:28 ` David Gibson
2007-03-16 17:28 ` [PATCH 10/17] bootwrapper: Add dt_set_mac_addresses() Scott Wood
2007-03-17 1:31 ` David Gibson
2007-03-18 0:22 ` Timur Tabi
2007-03-18 11:56 ` David Gibson
2007-03-19 15:09 ` Timur Tabi
2007-03-20 3:59 ` David Gibson
2007-03-20 14:00 ` Timur Tabi
2007-03-21 2:54 ` David Gibson
2007-03-21 15:01 ` Timur Tabi
2007-03-21 15:25 ` Jerry Van Baren [this message]
2007-03-21 15:55 ` Timur Tabi
2007-03-22 0:06 ` David Gibson
2007-03-22 15:13 ` Timur Tabi
2007-03-22 15:15 ` Jon Loeliger
2007-03-23 3:22 ` David Gibson
2007-03-23 14:38 ` Timur Tabi
2007-03-23 16:37 ` Segher Boessenkool
2007-03-23 16:42 ` Timur Tabi
2007-03-23 16:51 ` Segher Boessenkool
2007-03-23 16:54 ` Timur Tabi
2007-03-23 23:17 ` David Gibson
2007-03-20 18:17 ` Jon Loeliger
2007-03-21 13:45 ` Segher Boessenkool
2007-03-21 15:15 ` Timur Tabi
2007-03-21 19:07 ` Segher Boessenkool
2007-03-21 19:10 ` Timur Tabi
2007-03-21 19:34 ` Segher Boessenkool
2007-03-21 19:39 ` Timur Tabi
2007-03-21 19:48 ` Segher Boessenkool
2007-03-21 20:03 ` Timur Tabi
2007-03-21 20:22 ` Olof Johansson
2007-03-21 21:58 ` Segher Boessenkool
2007-03-21 21:54 ` Segher Boessenkool
2007-03-21 20:34 ` Doug Maxey
2007-03-21 22:01 ` Segher Boessenkool
2007-03-21 13:38 ` Segher Boessenkool
2007-03-21 15:09 ` Timur Tabi
2007-03-16 17:28 ` [PATCH 11/17] bootwrapper: Make set_cmdline non-static, and accept a const buffer Scott Wood
2007-03-17 1:36 ` David Gibson
2007-03-16 17:29 ` [PATCH 12/17] bootwrapper: Make set_cmdline() create /chosen if it doesn't exist Scott Wood
2007-03-21 13:32 ` Segher Boessenkool
2007-03-16 17:29 ` [PATCH 13/17] bootwrapper: Add ppcboot.h Scott Wood
2007-03-16 17:29 ` [PATCH 14/17] bootwrapper: Add support for cuboot platforms Scott Wood
2007-03-16 17:29 ` [PATCH 15/17] bootwrapper: Add cmd_wrap_dt Scott Wood
2007-03-16 17:29 ` [PATCH 16/17] bootwrapper: Add a cuImage target Scott Wood
2007-03-16 17:29 ` [PATCH 17/17] bootwrapper: cuboot for 83xx Scott Wood
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