Re: [microblaze-uclinux] DeviceTree build questions

[Michal Simek <monstr@xxxxxxxxx>]

steve@xxxxxxxxxxxxxxx wrote:
> Hello list,
> 
> I've been looking into making the leap to a DeviceTree / Open Firmware 
> 2.6.30 kernel and have ended up in a maze of twisty passages, all alike.
> 
> Some questions to aid my escape:
> 
> * Are there plans to support compilation of a DT blob into the kernel, as 
>   powerpc does?  

simpleImage is supported in master branch. Just create arch/microblaze/boot/dts folder and copy
there dts file (for example ours.dts) then run make simpleImage.ours
It should work well.

> 
> * I can't get my DTS file to build without the following changes.
>   Can you confirm that these are cut-and-paste errors?
> 
> ---
> diff -uprN a/bsp/device-tree_v1_01_a/data/device-tree_v2_1_0.tcl b/bsp/device-tree_v1_01_a/data/device-tree_v2_1_0.tcl
> --- a/bsp/device-tree_v1_01_a/data/device-tree_v2_1_0.tcl	2008-12-18 13:59:25.000000000 -0600
> +++ b/bsp/device-tree_v1_01_a/data/device-tree_v2_1_0.tcl	2009-07-28 07:19:27.000000000 -0500
> @@ -1165,13 +1165,13 @@ proc gen_memories {tree hwproc_handle} {
>  					
>  					lappend tree [memory $slave "MPMC_" ""]
>  				} else {
> -					set old_baseaddr [scan_int_parameter_value $slave [format "C_PIM0_BASEADDR" $x]]
> -					set old_offset [scan_int_parameter_value $slave [format "C_PIM0_OFFSET" $x]]
> +					set old_baseaddr [scan_int_parameter_value $slave "C_PIM0_BASEADDR"]
> +					set old_offset [scan_int_parameter_value $slave "C_PIM0_OFFSET"]
>  					set safe_addresses 1
>  					set num_ports [scan_int_parameter_value $slave "C_NUM_PORTS"]
>  					for {set x 1} {$x < $num_ports} {incr x} {
>  						set baseaddr [scan_int_parameter_value $slave [format "C_PIM%d_BASEADDR" $x]]
> -						set baseaddr [scan_int_parameter_value $slave [format "C_PIM%d_OFFSET" $x]]
> +						set offset [scan_int_parameter_value $slave [format "C_PIM%d_OFFSET" $x]]
>  						if {$baseaddr != $old_baseaddr} {
> ---
> 
> * I also can't build if the u-boot BSP is present:
> 
>     Calling uboot_v4_00_c ::generate
>     #--------------------------------------
>     # uboot BSP generate...
>     #--------------------------------------
>     System bus for instruction and data 
>     ERROR main_memory not specified. Please specific main_memory
>     FLASH doesn't exists
>     ERROR:MDT - top () - can't read "eram_base": no such variable
>            while executing
>        "llength $eram_base"
>            (procedure "uboot_intc" line 343)
>     ...
> 
>   I don't need to do this if I can get the DT blob into the kernel,
>   so I'm less worried about it.

the whole problem is that you haven't setup TOP bsp
>ERROR main_memory not specified. Please specific main_memory

In EDK software setting. Setup your interfaces. and rebuild libraries.

Regards,
Michal


> 
> Thanks in advance for any help.
> ------------------------------------------------------------------------
>  Steven J. Magnani               "I claim this network for MARS!
>  www.digidescorp.com              Earthling, return my space modulator!"
> 
>  #include <standard.disclaimer>
> 
> 
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> 
> 

-- 
Michal Simek, Ing. (M.Eng)
w: www.monstr.eu p: +42-0-721842854
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