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Diffstat (limited to 'doc/imx/README.sdp')
-rw-r--r-- | doc/imx/README.sdp | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/doc/imx/README.sdp b/doc/imx/README.sdp index 178ea68..6ea6e41 100644 --- a/doc/imx/README.sdp +++ b/doc/imx/README.sdp @@ -16,14 +16,19 @@ protocols allow to access a USB device without OS specific drivers. The U-Boot implementation has primarly been tested using the open source imx_loader utility (https://github.com/boundarydevices/imx_usb_loader). +imx_usb_loader is a very nice tool by Boundary Devices that allow to +install U-Boot without a JTAG debugger, using the USB boot mode as +described in the manual. It is a replacement for Freescale's +MFGTOOLS. + The host side utilities are typically capable to interpret the i.MX specific image header (see doc/README.imximage). There are extensions for imx_loader's imx_usb utility which allow to interpret the U-Boot specific legacy image format (see mkimage(1)). Also the U-Boot side support beside the i.MX specific header the U-Boot legacy header. -Usage ------ +1. Using imx_usb_loader for first install with SPL +-------------------------------------------------- This implementation can be started in U-Boot using the sdp command (CONFIG_CMD_USB_SDP) or in SPL if Serial Downloader boot mode has been @@ -98,3 +103,16 @@ With that SPL and U-Boot can be downloaded with a single invocation of imx_usb without arguments: # imx_usb + +2. Using imx_usb_loader non-SPL images +--------------------------------------- + +Booting in USB mode, the i.MX6 announces itself to the Linux Host as: + +Bus 001 Device 111: ID 15a2:0061 Freescale Semiconductor, Inc. + +imx_usb_loader is able to download a single file (u-boot.imx) +to the board. For boards without SPL support, it is enough to +issue the command: + + sudo ../imx_usb_loader/imx_usb -v u-boot.imx |