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From: syoder at austin.rr.com <syoder@austin.rr.com>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] U-boot + Linux + SMP question
Date: Fri, 25 Mar 2005 16:02:55 -0600	[thread overview]
Message-ID: <6c44b46c58b9.6c58b96c44b4@texas.rr.com> (raw)

I have a high level question about how U-boot interacts with the Linux kernel on a PowerPC SMP system.
 
CPU 0 starts at the boot vector in U-boot, configures system, boots the Linux kernel.   In the kernel, CPU 0 takes action to start CPU 1 and waits for CPU 1 to start.
 
CPU 1 also starts execution at the boot vector.   Does CPU 1 take a different execution path through U-boot?   Does CPU 1 also decompress the kernel into SDRAM (over top of the one put there by CPU0)?
 
The CONFIG_SMP define in u-boot seems be isolated mostly to the asm-ppc/bitops.h header file.
 
Any pointers to where I could find info on this would be appreciated.
 
Thanks,
Stuart Yoder

             reply	other threads:[~2005-03-25 22:02 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-03-25 22:02 syoder at austin.rr.com [this message]
2005-03-26  0:35 ` [U-Boot-Users] U-boot + Linux + SMP question Wolfgang Denk
  -- strict thread matches above, loose matches on Subject: below --
2005-03-27  0:18 Frank

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