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Re: [microblaze-uclinux] DeviceTree build questions
Steven J. Magnani wrote:
> On Tue, 2009-07-28 at 16:01 +0200, Michal Simek wrote:
>> 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.
>
> Great, thanks. I'll check it out.
>
>>> * 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"]
make no sense to me.
>>> 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" $x]]
Where is the offset used?
>>> if {$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.
>
> I did actually follow the directions here:
>
> http://www.monstr.eu/wiki/doku.php?id=fdt:fdt
>
> ...before posting. Can you check the patch above? I think there are
> errors in the device-tree TCL but since it's not my code I can't be
> sure. I am able to build a DTS file but I have to tweak the device-tree
> TCL and delete the u-boot BSP to do it.
Look at
http://developer.petalogix.com/git/gitweb.cgi?p=hw_design.git;a=summary
There are some designs which we use. There is everything setup - just add your
design and setup top bsp. I believe that you don't need to do any change in fdt.
But anyway - everybody has different design. If you send me your xmp,mhs,mss I can easily tested.
Regards,
Michal
>
>> Regards,
>> Michal
>>
>>
> Thanks,
> Steve
>
>>> 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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>>>
>>>
>
>
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>
>
--
Michal Simek, Ing. (M.Eng)
PetaLogix - Linux Solutions for a Reconfigurable World
w: www.petalogix.com p: +61-7-30090663,+42-0-721842854 f: +61-7-30090663
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