From: Frieder Schrempf frieder.schrempf@kontron.de
This adds a guide for copying the raw bootloader image on the SD card to the SPI NOR using U-Boot itself.
Signed-off-by: Frieder Schrempf frieder.schrempf@kontron.de --- doc/board/kontron/sl-mx8mm.rst | 34 +++++++++++++++++++++++++++++++++- 1 file changed, 33 insertions(+), 1 deletion(-)
diff --git a/doc/board/kontron/sl-mx8mm.rst b/doc/board/kontron/sl-mx8mm.rst index 8ed08a66a3..439f70142a 100644 --- a/doc/board/kontron/sl-mx8mm.rst +++ b/doc/board/kontron/sl-mx8mm.rst @@ -90,7 +90,39 @@ Burn the flash.bin to SD card at an offset of 33 KiB: Boot ^^^^
-Put the SD card in the slot on the board and apply power. +Put the SD card in the slot on the board and apply power. Check the serial +console for output. + +Flash the Bootloader to SPI NOR +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +1. Determine and note the exact size of the ``flash.bin`` image in bytes (e.g. + by running ``ls -l flash.bin``) + +2. On the U-Boot CLI copy the bootloader from SD card to RAM: + + .. code-block:: + + mmc dev 1 + mmc read $loadaddr 0x42 0x1000 + +3. Erase the SPI NOR flash: + + .. code-block:: + + sf probe + sf erase 0x0 0x200000 + +4. Copy the bootloader from RAM to SPI NOR. For the last parameter of the + command, use the size determined in step 1 in **hexadecimal notation**: + + .. code-block:: + + sf write $loadaddr 0x400 0x13B6F0 + +.. note:: + + To be able to boot from SPI NOR the OTP fuses need to be set accordingly.
Further Information -------------------