[U-Boot-Users] Kernel hanging after lmb_end_of_DRAM() function.

[Scott Wood]

On Thu, Apr 24, 2008 at 11:01:39AM +0530, Narendra KA wrote:
>    Thanks for the reply scott, :)
> 
> i forgot to mention , yes i am using device tree aware u-boot but the 
> problem is when i tried to build the u-boot source ( first i did ""make 
> ep8248_config"" and then ""make"") it was giving undefined reference 
> related to ft_board_setup() function so i altered the U-boot-1.3.2 source 
> code... i added the below code to the following file board/ep8248/ep8248.c
> 
> #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
> void ft_board_setup(void *blob, bd_t *bd)
> {
>         ft_cpu_setup(blob, bd);
> }
> #endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */

The 8260 ft_cpu_setup() seems a bit deficient -- most pertinently, it's
not calling fdt_fixup_memory(), but it's also missing brg frequency setup
and maybe some other things.  Look at other_cpu_setup() functions (e.g.
8xx, 83xx, 85xx) for an example of what to do.

> #define OF_CPU  "PowerPC,8248 at 0"
> #define OF_SOC  "soc at f0000000"
> #define OF_TBCLK        (bd->bi_busfreq / 4)
> #define OF_STDOUT_PATH  "/soc at f0000000/serial at 11a80"

These hardcoded things shouldn't be needed anymore.

> and how to use cuImage.pq2 ?

You'd need to change the makefile to tell it to build that target for
this board.  I recommend fixing u-boot, though, if you're already
inclined to go down that path.

> also i dint get what is dtbImage.ep8248e ? is 
> that same to ep8248e.dtb ??

No, that's an image for the PlanetCore bootloader.  If you don't have it,
you probably built with 'make uImage' rather than 'make zImage'.

-Scott