[U-Boot] How to do pci_init in flash

[sywang]

Wolfgang, 

Thanks for your feedback. 

Because the CPU-hang issue when pci_init still puzzle me, I want to check if
the issue is caused by relocate_code, in spite of the very probability. 

Do you have any suggestions about how to identify the root cause of PCI Init
configuration hang?  

Thanks!
Shuyou

-----Original Message-----
From: Wolfgang Denk [mailto:wd at denx.de] 
Sent: 2010年9月27日 15:27
To: sywang
Cc: u-boot at lists.denx.de
Subject: Re: [U-Boot] How to do pci_init in flash

Dear "sywang",

In message <20100927020635.0547228176 at theia.denx.de> you wrote:
> 
> I want to do pci configuration in the function 'board_init_f'.  How to do
> this? 

Why would you want to do that? Why cannot you wait until U-Boot has
relocateditself to RAM so you have full access to all resources?

> Could I call the function "pci_init" in the function 'board_init_f' or add
> the function "pci_init" into the function array " init_sequence "? 

This might be difficult, as you still have a very limted runtime
environment only, with just a minimal stack, without writable data,
without valid BSS.

Best regards,

Wolfgang Denk

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