[ECOS] Changing the default boot flash device in Redboot

Vanitha Ramaswami vanitha@agilis.st.com.sg
Wed Dec 1 11:19:00 GMT 2004


Hello,

I have another doubt. In mlt_arm_xscale_grg_rom.ldi file should i update the RAM Origin also in the MEMORY section

MEMORY
{
 ram: ORIGIN=0x51000000, LENGTH=0x2000000
 rom: ORIGIN=0x51000000, LENGTH=0x40000
}

And in mlt_arm_xscale_grg_ram.ldi


Thanks
Vanitha

On Tuesday, November 30, 2004 5:33 PM, Andrew Lunn [SMTP:andrew@lunn.ch] wrote:
> On Tue, Nov 30, 2004 at 05:17:42PM -0000, Vanitha Ramaswami wrote:
> > Hello,
> > 
> > The hardware person says there is a jumper in our custom IXP425 board, that will allow us to boot from IXP425 Flash located on CS1.
> > Can you tell me, what changes should i do to redboot to boot from the flash in CS1.
> 
> You need to modify the .h and .ldi file in your hals include/pkgconf/
> directory. You need to give the address the FLASH is mapped to when
> its not at address location 0.
> 
>         Andrew
> 
> > 
> > THanks
> > Vanitha
> > 
> > On Tuesday, October 05, 2004 4:59 PM, Andrew Lunn [SMTP:andrew@lunn.ch] wrote:
> > > On Tue, Oct 05, 2004 at 04:50:53PM -0000, Vanitha Ramaswami wrote:
> > > > Hi All,
> > > > 
> > > > I want to change the default boot flash device changed to another flash 
> > > > chip located in CS1 in my IXP425 reference platform. The version of redboot 
> > > > i have right now boots from the flash located in CS0. Where should i change 
> > > > in redboot in order to boot from the flash chip located in CS1 ?  I am able 
> > > > to recompile the redboot source and run in my platform. Can you tell the 
> > > > places where should i look at to change the default boot flash chip?
> > > 
> > > Before changing the software, i have another question. Is the hardware
> > > capable of booting from a different address?
> > > 
> > > Normally at boot time the flash is mapped to address 0. Early on in
> > > the boot sequence this mapping is changed to that there is RAM at
> > > address 0. Can you control the hardware which does this mapping so
> > > that it maps a different flash device to 0 at boot time? Is there a
> > > jumper on the board?
> > > 
> > >         Andrew
> > > 
> 
> 

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