digitalRNA wrote:
Hello,
Now I am trying to boot Linux using u-boot-0.3.0 not openbios on walnut.
But it failed.
It looks failed around timer initialization on vmlinux.
But in the case of openbios, the Linux can boot.
Are there any information about this issue?
<snip>
Last time I checked the Walnut support code in linuxppc_2_4_devel and
linuxppc_2_5 assumed OpenBIOS board_info structure and not
U-Boot/PPCBoot board_info structure. The result is that the kernel took
the first 4 bytes of the Ethernet address passed from U-Boot as the
memory size, which ofcourse made the MM code quite unhappy later on ;-)
The brute-force solution is to replace the definition of the struct in
walnut.h (which is in arch/ppc/platforms/4xx in 2.5 and in
arch/ppc/platforms in 2.4_devel)
typedef struct board_info {
...
} bd_t;
with:
#include <asm/ppcboot.h>
The non-brute-force solution is of course to do it based on #ifdef
CONFIG_USE_PPCBOOT or something like that. Unfortunately this
configuration option does not exist in 2.5 .
--
Eran Mann
Senior Software Engineer
MRV International
Tel: 972-4-9936297
Fax: 972-4-9890430
www.mrv.com
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