On 01/27/2010 06:10 AM, Alex wrote:
Gary Thomas wrote:
On 01/27/2010 06:03 AM, Alex wrote:
Hello everyone!
Trying to find information about kernel booting gave me nothing so I decided to
write here.
The question is: how does linux kernel know where to get its parameters'
string? To be more precise, what actions in general should a linux bootloader
do to tell the kernel its
params and boot it?
...
This process is different for every architecture (x86, arm, powerpc, ...)
What platform(s) are you trying to understand?
It is an arm cpu. The platform is dm6446.
n.b. replies should be on the mailing list so that all benefit.
The information for ARM is passed in memory at a fixed block with
pointers and tags describing the various data. The Linux source
file '.../arch/arm/include/asm/setup.h' describes how this works.
Look at U-Boot to see how it handles this linkage.
--
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Gary Thomas | Consulting for the
MLB Associates | Embedded world
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