hi !
IMHO, there were 2 version from cirrus of the bootloader, one where the mmu
tables were set up in C code and one version where mmu tables where set up in
asm code.
i used the asm version, hal_platform_setup.h --> BuildPagetable:
do not use my version on dev.contec.at because i have added some asm code
which detects which flash is connected.
but in BuildPagetable, IMHO in r2 the size of the flash has to be set:
//
// Create a read-write mapping of FLASH at virtual address 0x6000_0000.
//
add r1, r0, #0x00001800
#if defined(HAL_PLATFORM_EP9301) || defined(HAL_PLATFORM_EP9302)
mov r2, #0x00000040
#else
mov r2, #0x00000080
#endif
orr r3, r12, #0x00000012
orr r3, r3, #0x00000c00
and
//
// Create a read-write mapping of FLASH at virtual address 0xe000_0000.
//
add r1, r0, #0x00003800
#if defined(HAL_PLATFORM_EP9301) || defined(HAL_PLATFORM_EP9302)
mov r2, #0x00000040
#else
mov r2, #0x00000080
#endif
orr r3, r12, #0x00000012
then in the ldi file you have to change the rom things for your flash, IMHO, i
am not sure if this is necessare to change for every flash:
/ecos/packages/hal/arm/arm9/ep93xx/current/include/pkgconf/ldi_file
rom : ORIGIN = 0x10000000, LENGTH = 0x4000000
and:
in /ecos/packages/hal/arm/arm9/ep93xx/current/src/ep93xx_misc.c:
there you have change the adresses for your flash...
so, as far as i know that has to be it, sorry for not writing this before, but
i had also to look in my code which i have written 2 years ago, and sorry i
have forgoten it, what all has to be changed...
@Hasjim Williams, send me your icq, skype or come to ecos irc channel, maybe i
can help you...
so regards, greetings from austria
manfred
--
Manfred Gruber
Software Engineering
[EMAIL PROTECTED]
http://www.manfred-gruber.at.tt
http://www.myspace.com/fredl_grma
Am Friday 07 December 2007 schrieb Hasjim Williams:
> We're still having problems...
>
> Is there anywhere else in the code that I need to be looking?
>
> On Thu, 06 Dec 2007 15:29:22 +1000, "Hasjim Williams"
>
> <[EMAIL PROTECTED]> said:
> > I think I found the problem (which was MMU related):
> >
> > --- packages/hal/arm/arm9/ep93xx/current/include/hal_platform_setup.h
> > +++ packages/hal/arm/arm9/ep93xx/current/include/hal_platform_setup.h
> > @@ -494,20 +494,20 @@
> > //
> > // Create a read-write mapping of FLASH at virtual address
> > 0x6000_0000.
> > //
> > add r1, r0, #0x00001800
> > #if defined(HAL_PLATFORM_EP9301) || defined(HAL_PLATFORM_EP9302)
> > mov r2, #0x00000040
> > #else
> > // If you are using a Flash size of 64MB you need this value here
> > - // mov r2, #0x00000100 // 64MB
> > - mov r2, #0x00000080 // 32MB
> > + mov r2, #0x00000100 // 64MB
> > + // mov r2, #0x00000080 // 32MB
> > #endif
> > orr r3, r12, #0x00000012
> > orr r3, r3, #0x00000c00
> > map_flash_6:
> > str r3, [r1], #4
> > add r3, r3, #0x00100000
> > subs r2, r2, #4
> > bne map_flash_6
> >
> > Thanks for your help... Just didn't know where to look in redboot
> > source.
> >
> > On Thu, 6 Dec 2007 05:29:02 +0100, "Manfred Gruber" <[EMAIL PROTECTED]>
> >
> > said:
> > > hi !
> > >
> > > i have worked for a company where ep93xx and spansion flashes are used,
> > > please
> > > look at http://dev.contec.at, there i have made a redboot bootloader
> > > which
> > > can handle such flashes, but i have used flash_v2 branche, so it will
> > > not help u.
> > >
> > > > #dd$T0a0f:f06a0100;0d:f07e0400;#dd$T0a0f:f06a0100;0d:f07e0400;
> > > > #dd$T0a0f:f06a0100;0d:f07e0400;#dd$T0a0f:f06a0100;0d:f07e0400;
> > >
> > > this things i have only seen if the mmu is set up wrong, so maybe it
> > > helps
> > > check your mmu settings in redboot. maybe the 512 chip adresses
> > > obverlap somewhere...
> > >
> > > regards manfred
> > > mfg
> > > Manfred Gruber
> > > Software Engineering
> > > [EMAIL PROTECTED]
> > > http://www.manfred-gruber.at.tt
> > > http://www.myspace.com/fredl_grma
> > >
> > > Am Thursday 06 December 2007 schrieb Hasjim Williams:
> > > > Hello everyone,
> > > >
> > > > I'm having problems getting my ARM920T based EP9315 board to work
> > > > with 64MB flash. We have 64MB of RAM onboard. We previously had
> > > > S29GL128N and S29GL256N parts on the board, and haven't been able to
> > > > get Redboot to boot up correctly with the S29GL512N. It works fine
> > > > with the S29GL256N or S29GL128N still.
> > > >
> > > > As soon as it boots up, it spits out this error message, constantly:
> > > >
> > > > #dd$T0a0f:f06a0100;0d:f07e0400;#dd$T0a0f:f06a0100;0d:f07e0400;
> > > > #dd$T0a0f:f06a0100;0d:f07e0400;#dd$T0a0f:f06a0100;0d:f07e0400;
> > > >
> > > > Can anyone suggest anything that I'm missing:
> > > >
> > > > packages/devs/flash/arm/edb9312/current/cdl/flash_edb9312_a_amd.cdl:
> > > >
> > > > requires CYGHWR_DEVS_FLASH_AMD_S29GL128N
> > > > requires CYGHWR_DEVS_FLASH_AMD_S29GL256N
> > > > requires CYGHWR_DEVS_FLASH_AMD_S29GL512N
> > > >
> > > > packages/hal/arm/arm9/ep93xx/current/include/conf/mlt_arm9_edb9315a_r
> > > >omram. ldi:
> > > >
> > > > MEMORY
> > > > {
> > > > ram : ORIGIN = 0, LENGTH = 0x10000000
> > > > rom : ORIGIN = 0x60000000, LENGTH = 0x8000000
> > > > }
> > > >
> > > > packages/hal/arm/arm9/ep93xx/current/include/conf/mlt_arm9_edb9315a_r
> > > >omram. h:
> > > >
> > > > #define CYGMEM_REGION_rom (0x60000000)
> > > > #define CYGMEM_REGION_rom_SIZE (0x8000000)
> > > > #define CYGMEM_REGION_rom_ATTR (CYGMEM_REGION_ATTR_R)
> > > >
> > > > Thanks for any suggestions,
> > > >
> > > >
> > > > Hasjim Williams
