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From: kevin_sun_buaa2@h...<kevin_sun_buaa2@h...>
Date: Sat Jun 26 16:15:29 CEST 2004
Subject: [openrisc] about icache
hi
in orpmon, i changed the
#define IC_ENABLE 0
#define IC_SIZE 8192
#define DC_ENABLE 0
#define DC_SIZE 8192
to
#define IC_ENABLE 0
#define IC_SIZE 4096
#define DC_ENABLE 1
#define DC_SIZE 4096
then, the orpmon can boot and print "Bender Monitor (type 'help' for
help)". but when i changed it to:
#define IC_ENABLE 1
#define IC_SIZE 4096
#define DC_ENABLE 0
#define DC_SIZE 4096
nothing was printed. the spr SR is 0x00008211, and the UPR is 0x767.
in uclinux, i change the
#define ICACHE 1
#define DCACHE 1

#define IC_SIZE 8192
#define IC_LINE 16
#define DC_SIZE 8192
#define DC_LINE 16
to
#define ICACHE 0
#define DCACHE 1

#define IC_SIZE 4096
#define IC_LINE 16
#define DC_SIZE 4096
#define DC_LINE 16
then, the uclinux can boot, but when i changed it to
#define ICACHE 1
#define DCACHE 0

#define IC_SIZE 4096
#define IC_LINE 16
#define DC_SIZE 4096
#define DC_LINE 16
nothing was printed.
in hello-world, i copy some codes from uclinux which is used to make
icache enabled to the reset.S, and it can print "hello world!!!".
thank you.
kevin

----- Original Message -----
From: Matjaz Breskvar<phoenix@o...>
To:
Date: Sat Jun 26 13:44:26 CEST 2004
Subject: [openrisc] about icache

> * kevin_sun_buaa2@h... (kevin_sun_buaa2@h...) wrote:
> > Hi all,
> > i have succeed in running uclinux and orpmon on my cyclone
> board
> > with data cache opened, but if i have the instruction cache
> opened,
> > both of them failed to run. but the "hello-world"
> program can run as
> > good as usual. why would this happened? it seemed that with
> icache
> > opened, only a little code can be executed.
> can you give more details what happens... i have uclinux and
> orpmon running on or32 with icache & dcache without a problem.
> regards,
> p.
>
>