Hi,friends, the question about the u-boot and device tree?

Hi,friends, the question about the u-boot and device tree?

[郭劲]

Hi,friends,

I make all the frequency(timebase-frequency;bus-frequency;clock-frequency) value
on device tree file equal to zero, I think those frequency will filled by u-boot
during bootm, but in fact, the u-boot did not fill any frequency. after bootm,
crashed. Why?

Why so many document point out that the zero value will be filled by u-boot?

Re: [U-Boot-Users] Hi, friends, the question about the u-boot and device tree?

[Grant Likely]

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Re: [U-Boot-Users] Hi, friends, the question about the u-boot and device tree?

[郭劲]

Hi,friends,

I¡¡made follow define on my MPC8360EMDS.h file. Is it enough? The uboot still did
not fill the zero frequency on dtb. I think the ft_cpu_setup and ft_board_setup
function have been run.


/* pass open firmware flat tree */
#define CONFIG_OF_FLAT_TREE	         1
#define CONFIG_OF_BOARD_SETUP	1
/* maximum size of the flat tree (8K) */
#define OF_FLAT_TREE_MAX_SIZE	8192


>From: "Grant Likely" <grant.likely@secretlab.ca>
>Reply-To: 
>To: "¹ù¾¢" <guojin02@tsinghua.org.cn>
>Subject: Re: [U-Boot-Users] Hi, friends, the question about the u-boot and device
tree?
>Date:Thu, 13 Mar 2008 13:21:35 -0600
>
>On Thu, Mar 13, 2008 at 9:31 AM, ¹ù¾¢ <guojin02@tsinghua.org.cn> wrote:
>> Hi,friends,
>>
>>  I make all the frequency(timebase-frequency;bus-frequency;clock-frequency)
value
>>  on device tree file equal to zero, I think those frequency will filled by
u-boot
>>  during bootm, but in fact, the u-boot did not fill any frequency. after
bootm,
>>  crashed. Why?
>>
>>  Why so many document point out that the zero value will be filled by u-boot?
>
>In most cases it will assuming that your u-boot board port is
>configured to fill in those values.  You need to make sure that the
>ft_board_setup function is getting called by bootm and that it fills
>in those properties.
>
>g.
>
>-- 
>Grant Likely, B.Sc., P.Eng.
>Secret Lab Technologies Ltd.
> 

Re: Hi,friends, the question about the u-boot and device tree?

[Scott Wood]

On Thu, Mar 13, 2008 at 11:31:11PM +0800, 郭劲 wrote:
> I make all the frequency(timebase-frequency;bus-frequency;clock-frequency) value
> on device tree file equal to zero, I think those frequency will filled by u-boot
> during bootm, but in fact, the u-boot did not fill any frequency. after bootm,
> crashed. Why?

What board?  Are you using a device-tree-aware u-boot and the three-argument
form of bootm?  What sort of crash?  How do you know it's not filling in the
frequencies?

> Why so many document point out that the zero value will be filled by u-boot?

Because it does. :-)
If it's not doing so on your board, that needs to be fixed.

-Scott