Hi
On Wed, Oct 30, 2013 at 3:24 PM, Stefano Babic sbabic@denx.de wrote:
Hi Otavio,
On 30/10/2013 15:19, Otavio Salvador wrote:
OMAP4/3 can boot over the otg, so you can send MLO and let it wait for the second stage boot. We have already SPL USBETH in u-boot but in production otg flashing can be very useful. Think SPL as a differently configured U-BOOT doesn't change the problem but yes it's a nice idea.
But you'd usually want to have an 'upgrade mode' which allows DFU to run. In this case, this could be done using complete U-Boot instead of SPL, no? In case customer needs a slim version of it, it could be accomplished using a specific config and having:
SPL Update mode U-Boot (normal U-Boot with less features) Complete U-Boot (interactive and like)
or am I missing something?
Right, I agree completely with you.
That's the reason I do not understand why we have to push DFU into SPL. Maybe we both are missing something.
It's simple:
- first stage boot can be sent over the otg - using dfu to flash the u-boot.img, kernel .. etc
dfu is another way to upload and write second stage or what you want. I don't see the point to don't have this option. We have merged USBETH spl support and dfu is more useful.
./usb_load MLO.flash ./dfu-util ... MLO ./dfu-util ... u.boot.img .. ./dfu-util -R
Michael
Best regards, Stefano
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