RE: [ECOS] Re:e7t ROM startup

["Robert Cragie" <rcc at jennic dot com>]

OK - I see now it is a lot more involved than I initially thought.

Robert

> -----Original Message-----
> From: ecos-discuss-owner@sources.redhat.com
> [mailto:ecos-discuss-owner@sources.redhat.com]On Behalf Of Ravi Kumar B
> S
> Sent: 26 September 2001 16:27
> To: ecos-discuss@sources.redhat.com
> Subject: [ECOS] Re:e7t ROM startup
> 
> 
> hi,
>  thanks for reply.
> i tried what ever you have suggested. but without any success.=20
> I think you should be using 'flashload' (p 4-17 of Evaluator E7T User
> Guide), not 'flashwrite'. As far as I can tell, 'flashwrite' is a 'raw'
> write to the flash, i.e. copies RAM to flash, without putting any module
> header on.
> i tried using the flashload but it is not giving any success.
> According to p 4-29 of Evaluator E7T User Guide, I don't think you need =
> to
> include a module header in your code; this will be added by the =
> bootstrap
> loader. This may well confuse the module management software.
> i dont think that BSL will add any thing to our application. because =
> when
> building the redboot the module header is explicitly added(
> packages/hal/arm/e7t/current/cdl/hal_arm_e7t.cdl). and i am able to =
> build the
> redboot and put it in the flash and see that it is listed when i say
> 'rommodules'. what  really wonder is if it is possible to add the module
> header for the redboot why cant it be added for any other application =
> and
> make it work similarly. that is why i still doubt that i am missing in =
> adding
> the modul header. is it possible to look at the make file and the module
> header file and tell me if i am missing anything.
> thanks and regards,
> /Ravi kumar.
> > note: counter.c is my sample application and counter_module.c is the =
> file
> > which contains the module header.
> >
> > counter: $(wildcard
> > $(REPOSITORY)/arm-ecos-standalone/counter/counter_module.c
> > $(PREFIX)/lib/target.ld $(PREFIX)/lib/vectors.o =
> $(PREFIX)/lib/libtarget.a
> > $(PREFIX)/lib/libextras.a)
> >         # First build version with no checksum.
> >         @echo "First build version with no checksum."
> >         $(XCC) -c -I$(INCLUDE_PATH) counter.c
> >         $(XCC) -c -I$(INCLUDE_PATH) -Wp,-MD,deps.tmp -I$(dir $<)
> > $(CFLAGS) -o
> > counter_ncs.o $<
> >         $(XCC) $(LDFLAGS) -L$(PREFIX)/lib -Ttarget.ld -o =
> counter_ncs.tmp
> > counter_ncs.o counter.o
> >         $(OBJCOPY) --strip-debug counter_ncs.tmp counter_ncs.img
> >         $(OBJCOPY) -O binary counter_ncs.img counter_ncs.bin
> >         # Then build version with checksum from previously built =
> image.
> >         $(XCC) -c -DCHECKSUM=3D`$(dir $<)flash_cksum.tcl =
> counter_ncs.bin`
> > -I$(INCLUDE_PATH) -Wp,-MD,deps.tmp -I$(dir $<) $(CFLAGS) -o
> > counter_cs.o $<
> >         $(XCC) $(LDFLAGS) -L$(PREFIX)/lib -Ttarget.ld -o =
> counter_cs.tmp
> > counter_cs.o counter.o
> >         $(OBJCOPY) --strip-debug counter_cs.tmp counter.img
> >         $(OBJCOPY) -O binary counter.img counter.bin
> >         uuencode counter.bin counter.bin.tmp | tr '`' ' ' > counter.UU
> >
> > --------------------------------------------------------
> > counter_module.c
> > --------------------------------------------------------
> >
> > /* This is the module 'wrapper' for a simple application */
> >
> > /* #include
> > </u/ARM/new_ecos/packages/arm-ecos-standalone/install/include/pkgc
> > onf/hal.h>
> > */
> > #include <pkgconf/hal.h>
> > #include <cyg/infra/cyg_type.h>
> > #include <cyg/hal/hal_stub.h>
> >
> > /* ARM e7t module stuff */
> >
> > #ifndef CHECKSUM
> >     #define CHECKSUM  0x0
> > #endif
> >
> > extern char __exception_handlers, __rom_data_end;
> >
> > const char __title[] =3D "Counter";
> > const char __help[] =3D "Counter              " __DATE__;
> >
> > struct ModuleHeader {
> >     cyg_uint32    magic;
> >     cyg_uint16    flags;
> >     cyg_uint8     major;
> >     cyg_uint8     minor;
> >     cyg_uint32    checksum;
> >     cyg_uint32    ro_base;
> >     cyg_uint32    ro_limit;
> >     cyg_uint32    rw_base;
> >     cyg_uint32    zi_base;
> >     cyg_uint32    zi_limit;
> >     cyg_uint32    self;
> >     cyg_uint32    start;
> >     cyg_uint32    init;
> >     cyg_uint32    final;
> >     cyg_uint32    service;
> >     cyg_uint32    title;
> >     cyg_uint32    help;
> >     cyg_uint32    cmdtbl;
> >     cyg_uint32    swi_base;
> >     cyg_uint32    swi_handler;
> > };
> >
> > const static struct ModuleHeader __hdr =3D
> > {
> >     0x4D484944,             /* identifies the module header */
> >     2,                      /* flag =3D auto start */
> >     1,                      /* major version */
> >     0,                      /* minor version */
> >     CHECKSUM,               /* checksum */
> >     (cyg_uint32) &__exception_handlers, /* start of
> >                                         module (read-only) image */
> >     (cyg_uint32) &__rom_data_end,       /* end of image */
> >     0,                      /* r/w base - unused */
> >     0,                      /* bss base - unused */
> >     0,                      /* bss limit - unused */
> >     (cyg_uint32) &__hdr,    /* self (for module identification) */
> >     (cyg_uint32) &__exception_handlers, /* startup */
> >     0,                      /* init */
> >     0,                      /* final */
> >     0,                      /* service */
> >     (cyg_uint32) &__title,  /* title */
> >     (cyg_uint32) &__help,   /* help string */
> >     0,                      /* command table - unused */
> >     0,                      /* SWI table - unsused */
> >     0,                      /* SWI handler - unused */
> > };
> >
> > static void
> > __dummy(void *p)
> > {
> > }
> >
> > void __dummy_init(void)
> > {
> >     __dummy((void*)&__hdr);
> > }
> >
> > _Counter_init(__dummy_init, RedBoot_INIT_LAST);
> >
> >
>