From: Marco Stornelli <marco.stornelli@coritel•it>
To: jay_chen <jay_chen@alphanetworks•com>
Cc: linuxppc-embedded@ozlabs•org
Subject: Re: populate_rootfs fail
Date: Tue, 12 Feb 2008 13:46:59 +0100 [thread overview]
Message-ID: <47B19543.70808@coritel.it> (raw)
In-Reply-To: <OF66FDCEB1.DBBF4F1E-ON482573ED.0030E325@alphanetworks.com>
jay_chen ha scritto:
> Hello all:
>
> I am using mpc8548, kernel 2.6.14.5, and uboot as boot loader.
> When I upgrade ram from 512MB to 2G, my kernel can't boot anymore.
> (I pass mem=2048M to kernel in uboot now)
>
> It always dies in exec sys_write( ) in populate_rootfs( ).
> I did more tests about this and I found that sys_write( ) could write only
> about 4MB in 2G ram case.
> (My initrd is about 19MB, initrd_start : 0xCE7C7000, initrd_end :
> 0xCFAAF289, initrd_end - initrd_start : 0x012E8289 ==> about 19MB)
> Could anybody give me some hints?
> Is this issue related to the location of "/initrd.image"? Could I control
> it?
> Is there any size limit in ppc arch about ramdisk/initrd?
>
> Thanks for help.
>
> Jay...
>
> void __init populate_rootfs(void)
> {
> char *err;
> ...
> #ifdef CONFIG_BLK_DEV_INITRD
> if (initrd_start) {
> ...
> printk("it isn't (%s); looks like an initrd\n", err);
> fd = sys_open("/initrd.image", O_WRONLY|O_CREAT, 700);
> if (fd >= 0) {
> sys_write(fd, (char *)initrd_start,
> initrd_end - initrd_start);
> sys_close(fd);
> free_initrd();
> }
> }
> #endif
> }
>
> _______________________________________________
> Linuxppc-embedded mailing list
> Linuxppc-embedded@ozlabs•org
> https://ozlabs.org/mailman/listinfo/linuxppc-embedded
>
I think can be a problem with the u-boot initrd_high option. Have you
been enabled the highmem support to use 2G of ram, right? You can try to
set this option to 0x30000000.
Marco
next prev parent reply other threads:[~2008-02-12 12:43 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-12 8:53 populate_rootfs fail jay_chen
2008-02-12 9:36 ` [Spam Mail] populate_rootfs fail (This message should be blocked: ctfkl59804) jay_chen
2008-02-12 12:46 ` Marco Stornelli [this message]
2008-02-13 1:52 ` [Spam Mail] Re: populate_rootfs fail (This message should be blocked: bkdh372119) jay_chen
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