[PATCH v2 3/3] doc: sifive: fu540: Document Boot from MMC

[Jagan Teki <jagan@amarulasolutions.com>]

Document the Booting from MMC steps.

Detailed information about partitioning, flashing and etc.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
Changes for v2:
- new patch

 doc/board/sifive/fu540.rst | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/doc/board/sifive/fu540.rst b/doc/board/sifive/fu540.rst
index 3937222c6c..691ef232e2 100644
--- a/doc/board/sifive/fu540.rst
+++ b/doc/board/sifive/fu540.rst
@@ -363,3 +363,31 @@ load uImage.
 
    Please press Enter to activate this console.
    / #
+
+Booting from MMC
+----------------
+
+Use steps from "Building" section for building the U-Boot
+
+Format the SD card (make sure the disk has GPT, otherwise use gdisk to switch)
+
+.. code-block:: none
+
+   # sudo sgdisk --clear \
+   > --set-alignment=2 \
+   > --new=1:34:2081 --change-name=1:loader1 --typecode=1:5B193300-FC78-40CD-8002-E86C45580B47 \
+   > --new=2:2082:10273 --change-name=2:loader2 --typecode=2:2E54B353-1271-4842-806F-E436D6AF6985 \
+   > --new=3:10274: --change-name=3:rootfs --typecode=3:0FC63DAF-8483-4772-8E79-3D69D8477DE4 \
+   > /dev/sda
+
+Program the SD card
+
+.. code-block:: none
+
+   sudo dd if=spl/u-boot-spl.bin of=/dev/sda seek=34
+   sudo dd if=u-boot.itb of=/dev/sda seek=2082
+   sync
+
+Change DIP switches MSEL[3:0] are set to 1011
+
+Insert the SD card and power up the board.
-- 
2.17.1