On 13/05/13 19:28, Tom Rini wrote: > From: Steve Kipisz <s-kipi...@ti.com> > > NOR requires that s_init be within the first 4KiB of the image so that > we can perform the rest of the required pinmuxing to talk with the rest > of NOR that we are found on. When NOR_BOOT is set we save our > environment in NOR at 512KiB and a redundant copy at 768KiB. We avoid > using SPL for this case and u-boot.bin is written directly to the start > of NOR.
I'm trying to get this up and running our NanoBone platform, but I'm having no success. Using a non "NOR_BOOT" version, I can boot u-boot and read / write to the NOR device (located at 0x08000000). So I've compiled my "NOR_BOOT" version and stored it at the start of the flash device. But when I switch to booting from NOR (rather than SD) I get no output on the serial console. Using an oscilloscope, I can see the NOR chip select is active for a while (approx 350us), so *something* is trying to boot. How can I debug such an early part of the boot process ? Thanks for any help you can give me. Regards Mark J. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
