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Date: Mon, 25 May 2009 13:40:34 -0700 (PDT)
From: Mirek23 <miroslaw.dach@psi.ch>
To: linuxppc-dev@ozlabs.org
Subject: Re: U-boot and linux command line parameters
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I have done some experiments with u-boot (version 1.2.0) and with linux
kernel (version 2.6.23) and it seems to be that the limitation of 8MB is not
anymore the problem. I have built u-boot and linux for ppc405 (virtex-4). I
have set the CFG_BOOTMAPSZ to 16 MB:
#define CFG_BOOTMAPSZ             (8 << 21)  /* 16 MB */

and Linux has picked up the command line parameters which were set in
u-boot.

>/*
> * For booting Linux, the board info and command line data
> * have to be in the first 8 MB of memory, since this is
> * the maximum mapped by the Linux kernel during initialization.
> */
> #define CFG_BOOTMAPSZ             (8 << 20)   /* Initial Memory map for
> Linux */

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