Re: Redboot - Cirrus EP9315 and Spansion S29GL512N problem

[Manfred Gruber <m dot gruber at tirol dot com>]

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
	m.gruber@tirol.com
	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"
>
> <sourceware.ecos-devel@lists.futaris.org> 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" <m.gruber@tirol.com>
> >
> > 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
> > > 	m.gruber@tirol.com
> > > 	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