Hi Sascha, That's not quite correct. When you use the debug + personality board you can boot directly from a mmc-card which contains bootloader, kernel and rootfs without modifications. Only if you use the single personality board, you have to modify die board a little bit. Thanks for your short introduction. I tried to run the barebox image with u-boot and it seems to work. But after I get the following output barebox stops and do nothing. MX35 U-Boot > go 0x80100000 ## Starting application at 0x80100000 ... hï barebox 2011.02.0 (Feb 25 2011 - 09:49:05) Board: Freescale MX35 3Stack cfi_probe: cfi_flash base: 0xa0000000 size: 0x04000000 mc13892-i2c@mc13892-i2c0: PMIC ID: 0x000045d0 [Rev: 2.0a] register_device: already registered eth0 Have you any idea what the problem is? regards Thomas Am 24.02.2011 17:04, schrieb Sascha Hauer: > Hi Thomas, > > On Thu, Feb 24, 2011 at 02:08:55PM +0100, Thomas Mayer wrote: > >> Hi, >> >> i'm working on a project with a Freescale i.MX35 3-Stack board and try >> to use barebox as bootloader. >> My problem is that i don't know how to install barebox to NAND memory or >> better directly to a sd-card. >> Is there any documentation about this really basic stuff? >> > According to the schematics the i.MX35 3-stack is without modifying it > only able to boot in external boot mode, that is nand or nor flash. > First step should be starting barebox as a second stage loader from the > existing bootloader. For this the defconfig for the 3stack should > be suitable. If you are using redboot you can use the following (replace > 0x100000 with some valid sdram address): > > load -r -b 0x100000 barebox.bin > run 0x100000 > > The same for u-Boot: > > tftp 0x80100000 barebox.bin > go 0x80100000 > > If this works you should check if networking works: > > dhcp; tftp barebox.bin /dev/ram0 > > or, if you use the smc9117 on the debug board: > > ethact eth1; dhcp; tftp barebox.bin /dev/ram0 > > you can then flash barebox to either nand or nor flash: > > erase /dev/nor0.barebox; tftp barebox.bin /dev/nor0.barebox > > or: > > erase /dev/nand0.barebox.bb; tftp barebox.bin /dev/nand0.barebox.bb > > I suggest that you first try to flash barebox to the flash that does > not contain your original bootloader (if you haven't got jtag) > > For getting a barebox suitable for starting from NAND you should enable > CONFIG_NAND_IMX_BOOT in your config. > > The 3stack should be able to work in internal boot mode if TP41/42 on > the personality board are adjusted. > > You also might want to apply the boot mode cleanup patch I just posted > which makes it a bit clearer what boot modes are actually supported by > barebox. > > Hope that helps, > > Sascha > > >> regards >> Thomas >> > >> _______________________________________________ >> barebox mailing list >> barebox@xxxxxxxxxxxxxxxxxxx >> http://lists.infradead.org/mailman/listinfo/barebox >> > > _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
