* [U-Boot-Users] u-boot r1 machine type value to AT91RM9200 2.6.12 kernel
@ 2005-06-23 9:06 Dikhoff at gmx.de
2005-06-23 9:12 ` Steven Scholz
0 siblings, 1 reply; 2+ messages in thread
From: Dikhoff at gmx.de @ 2005-06-23 9:06 UTC (permalink / raw)
To: u-boot
Hello,
I tried to use the linux 2.6.12 release for AT91RM9200, but when I started
with u-boot 1.1.2 the Kernel stopped.
I can configure a working kernel with the option 'config NAKED_Boot= y ',
but
with this option it's not possible to pass any bootarguments to the kernel.
How can I pass the corret R1 value for the machine type ('0xfb') from u-boot
1.1.2 to the kernel?
The last working kernel in combination with u-boot was 2.6.12rc4. What
changes in the u-boot source do I have to maintain relating to these boot
options? Or is it possible to pass the r1 value in between the 'bootargs' of
the u-boot enviroment?
Any help would be appreciated
Regards
Sascha
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^ permalink raw reply [flat|nested] 2+ messages in thread* [U-Boot-Users] u-boot r1 machine type value to AT91RM9200 2.6.12 kernel
2005-06-23 9:06 [U-Boot-Users] u-boot r1 machine type value to AT91RM9200 2.6.12 kernel Dikhoff at gmx.de
@ 2005-06-23 9:12 ` Steven Scholz
0 siblings, 0 replies; 2+ messages in thread
From: Steven Scholz @ 2005-06-23 9:12 UTC (permalink / raw)
To: u-boot
Sascha,
> I tried to use the linux 2.6.12 release for AT91RM9200, but when I started
> with u-boot 1.1.2 the Kernel stopped.
It is a custom board? Did you register a MACH_NUMBER?
> I can configure a working kernel with the option 'config NAKED_Boot= y ',
> but
> with this option it's not possible to pass any bootarguments to the kernel.
> How can I pass the corret R1 value for the machine type ('0xfb') from u-boot
> 1.1.2 to the kernel?
In you board_init() do something like:
/* arch number of AT91RM9200 */
/*gd->bd->bi_arch_number = 251;*/
gd->bd->bi_arch_number = MACH_TYPE_MULTIIO;
/* adress of boot parameters */
gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
> The last working kernel in combination with u-boot was 2.6.12rc4. What
> changes in the u-boot source do I have to maintain relating to these boot
> options? Or is it possible to pass the r1 value in between the 'bootargs' of
> the u-boot enviroment?
No.
Just make sure your board_init() sets the correct (TM) arch_number.
See kernel sources
linux-2.6.12/arch/arm/boot/compressed/head-at91rm9200.S
--
Steven
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2005-06-23 9:06 [U-Boot-Users] u-boot r1 machine type value to AT91RM9200 2.6.12 kernel Dikhoff at gmx.de
2005-06-23 9:12 ` Steven Scholz
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