[U-Boot-Users] [PATCH] OMAP1610 cs boot mode

[Imre.Deak at nokia.com]

Hi Wolfgang,

Sorry if the name is misleading, or not exact, I tried
to denote with it the following:
In order to set the correct base address for the flash
memory, U-Boot has to know somehow the boot mode of the
board. There are two of it. In the first ROM is mapped
to address 0 and the flash is to address 0x0C00000. In
the second mode the two are swapped, ROM is at
0x0C000000 and flash is at 0. Boot happens always from
address 0. In this way we can effectivly select (with
a dip switch) where we'd like to boot from.
At the moment U-Boot has to be configured to either of
the two modes. There are 3 make targets for this, first
and third being equivalent:

omap1610h2_config ( ==omap1610h2_cs3_boot_config )
omap1610h2_cs0_boot_config
omap1610h2_cs3_boot_config

It is possible however to determine the boot mode
automatically, from an OMAP status register and thus set
the flash base address correctly. For this I added a
new target omap1610h2_cs_autoboot_config.
Maybe it should be a CONFIG variable instead of 4
targets for each board (H2, Innovator), like
CONFIG_OMAP_BOOTMODE_CS0
CONFIG_OMAP_BOOTMODE_CS3
CONFIG_OMAP_BOOTMODE_DETECT
?

Regards,
Imre

> -----Original Message-----
> From: wd at denx.de [mailto:wd at denx.de]
> Sent: 26 May, 2004 20:25
> To: Deak Imre (Nokia-M/Helsinki)
> Cc: u-boot-users at lists.sourceforge.net
> Subject: Re: [U-Boot-Users] [PATCH] OMAP1610 cs boot mode 
> 
> 
> In message 
> <0F6832DAA2EE0B4D9281EDC36F09A8FC0FC3E6 at esebe025.ntc.nokia.com
> > you wrote:
> > 
> > The new targets are:
> > omap1610h2_cs_autoboot_config
> > omap1610inn_cs_autoboot_config
> 
> Please explain where the name "autoboot" comes from.
> 
> Best regards,
> 
> Wolfgang Denk
> 
> -- 
> Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
> Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at denx.de
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