[U-Boot-Users] bootargs

[U-Boot-Users] bootargs

[asnua at eircom.net]

Hi
Does CONFIG_BOOTARGS and or CONFIG_CMDLINE_TAG have to be set before the env variable 'bootargs' gets passed to the kernel? 

Thanks,
Dave

[U-Boot-Users] bootargs

[George G. Davis]

On Wed, Mar 10, 2004 at 06:33:09PM +0000, asnua at eircom.net wrote:
> Hi
> Does CONFIG_BOOTARGS and or CONFIG_CMDLINE_TAG have to be set before the env variable 'bootargs' gets passed to the kernel? 
> 

You must enable (define) CONFIG_CMDLINE_TAG. OTOH, defining CONFIG_BOOTARGS
is optional. If you do define CONFIG_BOOTARGS, it sets the default env
bootargs if same is not present in saved flash env already. Else if you
undef CONFIG_BOOTARGS, then you can always do `setenv bootargs ...` to
set it and `saveenv` to save it.

HTH!

--
Regards,
George
P.S. Make sure you've specified the correct BOOT_PARAMS phys addr for your
machine, i.e. make sure your machine boot_params agree between u-boot and
linux:

	grep -i boot_params ../u-boot/board/*/*.c ../linux/arch/arm/mach-*/*.c


> Thanks,
> Dave
> 
> 
> 
> 
> 
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[U-Boot-Users] bootargs

[Wolfgang Denk]

In message <E1B18nH-0006On-2d@sc8-sf-list1.sourceforge.net> you wrote:
>
> Does CONFIG_BOOTARGS and or CONFIG_CMDLINE_TAG have to be set before the env variable 'bootargs' gets passed to the kernel? 

CONFIG_BOOTARGS gives just the default setting  (initial  value)  for
bootargs.  If  or how this gets passed to the Linux kernel depends on
the architecture;  for  example  on  ARM  CONFIG_CMDLINE_TAG  may  be
needed, on PowerPC it does not mean anything.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at denx.de
Presidency:  The greased pig in the field game of American politics.
- Ambrose Bierce

[U-Boot-Users] bootargs

[asnua at eircom.net]

George,Wolfgang,
Well done. I modified my configuration file to enable CONFIG_CMDLINE_TAG and I can now pass command line arguments to the kernel. Yipee!!
I also checked the location of the BOOT_PARAMS phys addr and they were the same at 0x30000100.

I've also noticed that the error I was reporting earlier
in the week : 
"Warning: bad configuration page, trying to continue"
has DISAPPEARED. 
All this excitement in one day!!

One thing (there's always one more) ... does U-boot support writing to Intel Strata Flash?

Thanks again,
Dave



"George G. Davis" <davis_g@comcast.net> wrote:

<  
<  On Wed, Mar 10, 2004 at 06:33:09PM +0000, asnua at eircom.net wrote

"George G. Davis" <davis_g@comcast.net> wrote:

<  
<  On Wed, Mar 10, 2004 at 06:33:09PM +0000, asnua@eircom.net wrote:
<  > Hi
<  > Does CONFIG_BOOTARGS and or CONFIG_CMDLINE_TAG have to be set before the env variable 'bootargs' gets passed to the kernel? 
<  > 
<  
<  You must enable (define) CONFIG_CMDLINE_TAG. OTOH, defining CONFIG_BOOTARGS
<  is optional. If you do define CONFIG_BOOTARGS, it sets the default env
<  bootargs if same is not present in saved flash env already. Else if you
<  undef CONFIG_BOOTARGS, then you can always do `setenv bootargs ...` to
<  set it and `saveenv` to save it.
<  
<  HTH!
<  
<  --
<  Regards,
<  George
<  P.S. Make sure you've specified the correct BOOT_PARAMS phys addr for your
<  machine, i.e. make sure your machine boot_params agree between u-boot and
<  linux:
<  
<  	grep -i boot_params ../u-boot/board/*/*.c ../linux/arch/arm/mach-*/*.c
<  
<  

[U-Boot-Users] bootargs

[Wolfgang Denk]

In message <E1B1QIK-00061j-BX@sc8-sf-list1.sourceforge.net> you wrote:
>
> All this excitement in one day!!

And all for free :-)

> One thing (there's always one more) ... does U-boot support writing to Intel Strata Flash?

More exitement on the way: yes, of course.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at denx.de
"Wagner's music is better than it sounds."               - Mark Twain

[U-Boot-Users] bootargs

[asnua at eircom.net]

My board has 2 x E28F128J3A150 Intel Strata flash devices at 0x08000000 and a seperate 1Mbyte AMD flash (containing u-boot) at 0x00000000. How do I configure u-boot to identify all of my flash devices?
Does u-boot use CFI to detect flash devices?

I want to use jffs2 root file system on Strata flash
If u-boot is unaware of the other (i.e.Strata) flash will that affect the kernel using jffs2 and mtd subsystem?

Currently when I do flinfo it only returns information about the 1Mbyte flash!

e.g. flinfo

Bank # 1: AMD: 1x Amd29LV800BB (8Mbit)
  Size: 1 MB in 19 Sectors
  Sector Start Addresses:
    00000000 (RO) 00004000 (RO) 00006000 (RO) 00008000 (RO) 00010000 (RO)
    00020000      00030000      00040000      00050000      00060000
    00070000      00080000      00090000      000A0000      000B0000
    000C0000      000D0000      000E0000      000F0000 (RO)

Thanks,
Dave

Wolfgang Denk <wd@denx.de> wrote:

<  
<  In message <E1B1QIK-00061j-BX@sc8-sf-list1.sourceforge.net> you wrote:
<  >
<  > All this excitement in one day!!
<  
<  And all for free :-)
<  
<  > One thing (there's always one more) ... does U-boot support writing to Intel Strata Flash?
<  
<  More exitement on the way: yes, of course.
<  
<  Best regards,
<  
<  Wolfgang Denk
<  
<  -- 
<  Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
<  Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
<  "Wagner's music is better than it sounds."               - Mark Twain
<  

[U-Boot-Users] bootargs

[Wolfgang Denk]

In message <E1B6qcy-00011A-Er@sc8-sf-list1.sourceforge.net> you wrote:
>
> My board has 2 x E28F128J3A150 Intel Strata flash devices at
> 0x08000000 and a seperate 1Mbyte AMD flash (containing u-boot) at
> 0x00000000. How do I configure u-boot to identify all of my flash
> devices?

Adapt the flash driver for your board to initialize both banks.

> Does u-boot use CFI to detect flash devices?

You can use the CFI driver or a custom driver just as you like.

> I want to use jffs2 root file system on Strata flash
> If u-boot is unaware of the other (i.e.Strata) flash will that affect the kernel using jffs2 and mtd subsystem?

U-Boot must at least initialize the memory controller,  and  normally
it should report the location (address) and size to the Linux kernel.

> Currently when I do flinfo it only returns information about the 1Mbyte flash!

Which means your flash driver is incomplete.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at denx.de
panic: kernel trap (ignored)

[U-Boot-Users] bootargs

[Barbier, Renaud]

I am not sure that I understand how to pick up the bootargs variables in Linux (ocotea) PPC.
I looked at codes of different machine but I do not know which one fit fro my 440GX based-machine.

I am still looking into these bd_t and bi_record structure to see if I can find the answer.

Any help welcome?

[U-Boot-Users] bootargs

[George G. Davis]

On Thu, Oct 14, 2004 at 10:20:29AM -0500, Barbier, Renaud (GE Infrastructure) wrote:
> I am not sure that I understand how to pick up the bootargs variables in Linux (ocotea) PPC.

Sorry, my comments earlier in this thread were relevant for ARM targets only.
I have no idea how this works for PPC or other archs.

--
Regards,
George

> I looked at codes of different machine but I do not know which one fit fro my 440GX based-machine.
> 
> I am still looking into these bd_t and bi_record structure to see if I can find the answer.
> 
> Any help welcome?
> 
> 
> -------------------------------------------------------
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[U-Boot-Users] bootargs

[Barbier, Renaud]

thanks I figured it out. 

-----Original Message-----
From: George G. Davis [mailto:gdavis at mvista.com]
Sent: Thursday, October 14, 2004 9:08 PM
To: Barbier, Renaud (GE Infrastructure)
Cc: U-Boot-Users at lists.sourceforge.net
Subject: Re: [U-Boot-Users] bootargs


On Thu, Oct 14, 2004 at 10:20:29AM -0500, Barbier, Renaud (GE Infrastructure) wrote:
> I am not sure that I understand how to pick up the bootargs variables in Linux (ocotea) PPC.

Sorry, my comments earlier in this thread were relevant for ARM targets only.
I have no idea how this works for PPC or other archs.

--
Regards,
George

> I looked at codes of different machine but I do not know which one fit fro my 440GX based-machine.
> 
> I am still looking into these bd_t and bi_record structure to see if I can find the answer.
> 
> Any help welcome?
> 
> 
> -------------------------------------------------------
> This SF.net email is sponsored by: IT Product Guide on ITManagersJournal
> Use IT products in your business? Tell us what you think of them. Give us
> Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more
> http://productguide.itmanagersjournal.com/guidepromo.tmpl
> _______________________________________________
> U-Boot-Users mailing list
> U-Boot-Users at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/u-boot-users