[U-Boot-Users] Linux does not start on custom board

Thu Aug 19 09:00:30 CEST 2004

In message <20040819060123Z130980-6725+1004377 at kps1.test.onet.pl> you wrote:
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> <P>I ported u-boot to custom board and it works fine :)<BR>but kernel hangs during initialization :(</P>

It seems to work fine, but it is not usable for Linux.

> <P>&nbsp;</P>
> <P>It hangs in the function free_area_init_core() in the <BR>following code:<BR>&nbsp; for (i = 0; i &lt; size; i++) {<BR>&nbsp;&nbsp;&nbsp; struct page *page = mem_map + offset + 1;<BR>&nbsp;&nbsp;&nbsp; ....<BR>&nbsp; }<BR>function is called from:<BR>
> &nbsp;start_kernel() - setup_arch() - paging_init() - free_area_init()</P>
> <P>&nbsp;</P>
> <P>I made sure that:<BR>a) IMMR_ADDR (Linux) = CFG_IMMR (u-boot) = 0x02000000<BR>b) struct bd_info are the same in Linux an u-boot<BR>c) CONFIGURE_CLOCKS_IN_MHZ is not defined - I have kernel 2.4.24</P>

This cannot work. Your kernel will crash as soon as a user space
application starts to run. See
http://www.denx.de/twiki/bin/view/PPCEmbedded/Kernel#Section_10.2.
and
http://lists.linuxppc.org/listarcs/linuxppc-embedded/200005/msg00157.html

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at denx.de
No more blah, blah, blah!
	-- Kirk, "Miri", stardate 2713.6