mx28evk: Add a README file

Add a README file for mx28evk board.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>

diff --git a/doc/README.mx28evk b/doc/README.mx28evk
new file mode 100644 (file)
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+FREESCALE MX28EVK
+==================
+
+Supported hardware: only MX28EVK rev D is supported in U-boot.
+
+Files of the MX28EVK port
+--------------------------
+
+arch/arm/cpu/arm926ejs/mx28/   - The CPU support code for the Freescale i.MX28
+arch/arm/include/asm/arch-mx28/        - Header files for the Freescale i.MX28
+board/freescale/mx28evk/       - MX28EVK board specific files
+include/configs/mx28evk.h      - MX28EVK configuration file
+
+Jumper configuration
+---------------------
+
+To boot MX28EVK from an SD card, set the boot mode DIP switches as:
+
+   * Boot Mode Select: 1 0 0 1 (Boot from SD card Slot 0 - U42)
+   * JTAG PSWITCH RESET: To the left (reset enabled)
+   * Battery Source: Down
+   * Wall 5V: Up
+   * VDD 5V: To the left (off)
+   * Hold Button: Down (off)
+
+Follow the instructions from doc/README.mx28_common to generate a bootable SD
+card.
+
+Insert the SD card in slot 0, power up the board and U-boot will boot.