Hi Eric, On 01/20/2012 01:56 AM, Eric Nelson wrote: > Hi Wolfgang, > > On 01/19/2012 03:26 AM, Dirk Behme wrote: >> Dear Wolfgang, >> >> On 19.01.2012 10:58, Wolfgang Grandegger wrote: >>> >>> Where can I find the "SPI_to_SD_loader.bin" image? >> >> Unfortunately, at the moment you have to ask your Freescale contact >> for this. We >> ping Freescale since weeks for this. Last time I heard about this >> Freescale >> planned to release this binary under a BSD license. They are still >> "working >> through the licensing details", though :( >> >>> What means early >>> version of SabreLite boards? >> >> Most probably Eric will be able to better answer this. >> > > At this point **all** versions of SabreLite are configured to boot to SPI > NOR through the fuses. > > As Dirk mentioned, we've had some conversations about booting to SD card, > but once the fuse is blown, it's blown. > >> What I understood: Up to now, the boards boot from SPI NOR by default. >> There was >> some _discussion_ to change this to SD boot. Most probably "early >> version" was >> written while this discussion under the impression that later boards >> might >> switch to SD boot. To my understanding the result of this discussion >> was that >> this change would be difficult, though. >> > > We've discussed, but currently have no plans to support a physical switch > to control this decision. This would involve using the "Internal" boot mode > position of SW1 and then pulling a **bunch** of pins high or low to control > the boot flow. > > Note that all of the pins are available on connector J12 (BOOT/EIM), so it > might be done with a small daughter-board.
OK, I see. > >>> How can I select boot from SD-Card on newer versions? >> >> To my understanding there are no "newer versions" yet. >> > > Right. > >>> And will the u-boot.imx image also boot when loaded >>> to the SPI-NOR fash? >> >> Hmm, I'm not sure about this as I haven't tested this. >> >> Eric? >> > > Yes. If you program u-boot.imx to offset 0x400, it will boot. > > I just did so as shown below. > > I started by placing SW1 in the 01 position (boot to USB), and > used imx_usb to dowload u-boot.imx: > > MX6QSABRELITE U-Boot > dhcp 10800000 192.168.0.112:u-boot.imx > fec_open:Speed=100 > BOOTP broadcast 1 > BOOTP broadcast 2 > DHCP client bound to address 29.6.1.24 > Using FEC device > TFTP from server 192.168.0.112; our IP address is 29.6.1.24; > sending through gateway 29.6.1.1 > Filename 'u-boot.imx'. > Load address: 0x10800000 > Loading: ######################################### > done > Bytes transferred = 207112 (32908 hex) > MX6QSABRELITE U-Boot > sf write 0x10800000 0x400 $filesize But above you used the network to load u-boot.imx. With imx_usb you loaded and booted an image via USB first, I assume. > <switched SW1 to BOOT mode 0 and hit the reset button here> > > U-Boot 2011.12-00048-g5c30101 (Jan 19 2012 - 17:14:32) > CPU: Freescale i.MX61 family rev1.0 at 792 MHz > Reset cause: POR > Board: MX6Q-Sabre Lite > DRAM: 1 GiB > WARNING: Caches not enabled > MMC: FSL_SDHC: 0, FSL_SDHC: 1 > MMC init failed > Using default environment > > In: serial > Out: serial > Err: serial > Net: FEC > Hit any key to stop autoboot: 0 > MX6QSABRELITE U-Boot > > MX6QSABRELITE U-Boot > > > The imx_usb utility is available here: > http://boundarydevices.com/git?p=imx_usb_loader.git > > It requires libusb-1.0-0-dev to build, but has few other dependencies. > > Usage is simple: hand it the file you want to execute. It will look > at the header to find out where to place the image. > ~/imx_usb_loader$ sudo sudo ./imx_usb u-boot.imx Nice fallback in case the bootloader does not start. I will give it a try a.s.a.p. We actually plan to use a BDI[23]000 for that purpose. >> Please note that Eric is in the process of mainlining the SPI driver for >> i.MX6, atm. > > If you use my latest patch set, you can place the environment in SPI-NOR as > well by commenting out CONFIG_ENV_IS_IN_MMC, and un-commenting > ..._IN_SPI_FLASH > in include/configs/mx6qsabrelite.h. OK, that's already an excellent starting point. Thanks. Wolfgang. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
