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tn2916_boot_from_nand_omap2420.fm - Rev. D 6/07 EN
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TN-29-16: Boot-from-NAND with the TI OMAP2420 Processor
Writing Binary Images to NAND Flash with Limited OST Tools
Write the X-Loader to the NAND Flash
1. Configure the U-Boot to communicate with the TFTP server in the terminal window.
2. Place the X-Loader image in the TFTP server.
3. Write a copy of the X-Loader file to the DRAM using the U-Boot program.
4. Erase the area in the NAND Flash where the X-Loader will reside.
5. Copy the X-Loader program from the DRAM to the NAND Flash.
This step is illustrated in Figure 13.
Figure 13: Example of Writing the X-Loader to the NAND Flash
Micron NAND Flash
OMAP2420 processor SRAM
Block 0
X-Loader (binary)
Block 1
X-Loader (binary)
Block 2
X-Loader (binary)
Block 3
X-Loader (binary)
Micron DRAM
Host PC
Serial
TFTP
Program NAND
Terminal
U-Boot interface
TFTP Server
U-Boot (working)
X-Loader
(binary)
X-Loader (binary)
X-Loader
(binary
)
X-Loader (binary)
