MSR__EE flag cause problem

MSR__EE flag cause problem

[Liu Fred-a18596]

Hi, Greetings,

I am porting PPCBoot-1.1.5 to a PPC852 board. When PPCboot executes this
statement

       set_msr(get_msr() | MSR_EE);

in "interrupt_init()" which located at "cpu/mpc8xx/interrupts.c", the
console will display random characters.
But if I get rid of MSR_EE, that is "set_msr(get_msr());", then PPCBoot will
go on and display prompt.

I am a newbie for 8xx. What should I do?

BR,
Fred


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Re: MSR__EE flag cause problem

[Wolfgang Denk]

Dear Fred,

in message <003701c29dd2$01ddeed0$940879c8@sc.mcel.mot.com> you wrote:
>
> I am porting PPCBoot-1.1.5 to a PPC852 board. When PPCboot executes this
> statement

This is probably not a wise decision. PPCBoot  1.1.5  is  very,  very
old.  I  strongly  recommend  to  use  a  more current version - more
precisely, don't use any version of PPCBoot at all for current  work.
The  PPCBoot  development  has been stopped. The project is continued
under the new name "U-Boot" (Universal Boot Loader) and now  supports
PowerPC, ARM, and x86 (and probably soon MIPS).

> I am a newbie for 8xx. What should I do?

Start with the following actions:

Subscribe to the u-boot-users mailing list.
Use a current version of the source code.

Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
"Free markets select for winning solutions."        - Eric S. Raymond

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