This is TI dm6446 EVM board of UBL, the source of its support Nand/NOR/UART boot, this is a project in the CCS, download and unzip, then you can be directly compile it

davinci_boot
............\bin
............\...\ascii2bin.exe
............\...\hex2qtrom.exe
............\...\hex2rom.exe
............\...\hex470.exe
............\build
............\.....\ublConfig.cfg
............\.....\ublDaVinci.pjt
............\.....\UBL_UART_WRITER.cmd
............\docs
............\....\ReadMe.txt
............\include
............\.......\armDsp.h
............\.......\bootloader.h
............\.......\cslr.h
............\.......\cslr_edma.h
............\.......\cslr_edmacc_001.h
............\.......\cslr_edmatc0_001.h
............\.......\cslr_emif.h
............\.......\cslr_emif_001.h
............\.......\cslr_intc.h
............\.......\cslr_intc_001.h
............\.......\cslr_psc.h
............\.......\cslr_psc_001.h
............\.......\cslr_tmr.h
............\.......\cslr_tmr_001.h
............\.......\cslr_uart.h
............\.......\cslr_uart_001.h
............\.......\error.h
............\.......\nand.h
............\.......\nor.h
............\.......\tistdtypes.h
............\.......\uart.h
............\src
............\...\armboot_main.c
............\...\copy.asm
............\...\emifconfig.c
............\...\init.asm
............\...\nand.c
............\...\nandboot.c
............\...\nor.c
............\...\norboot.c
............\...\platform.asm
............\...\srecord.c
............\...\uartboot.c
............\...\uartmenu.c
............\...\ublboot.asm
............\...\util.c
............\tools
............\.....\bin
............\.....\...\ascii2bin.exe
............\.....\...\d2u.exe
............\.....\...\hex2qtrom.exe
............\.....\...\hex2rom.exe
............\.....\...\hex470.exe
............\.....\flashwriter_arm
............\.....\...............\build
............\.....\...............\.....\flashwriter.pjt
............\.....\...............\.....\lnk.cmd
............\.....\...............\include
............\.....\...............\.......\DM420.h
............\.....\...............\.......\Flash_params.h
............\.....\...............\.......\types.h
............\.....\...............\src
............\.....\...............\...\FlashWriterNOR.c
............\.....\gel
............\.....\...\DaVinciEVM_arm.gel
............\.....\nandWriter_arm
............\.....\..............\build
............\.....\..............\.....\davincievm_arm.cmd
............\.....\..............\.....\nandflash.pjt
............\.....\..............\include
............\.....\..............\.......\davincievm.h
............\.....\..............\.......\davincievm_nandflash.h
............\.....\..............\src
............\.....\..............\...\davincievm.c
............\.....\..............\...\davincievm_nandflash.c
............\.....\..............\...\main.c
............\.....\..............\...\nandflash_test.c
............\.....\util
............\.....\....\bin
............\.....\....\...\createFlashImage.exe
............\.....\....\...\genUblAppText.exe
............\.....\....\...\genUblText.exe
............\.....\....\davinciAPPhex.cmd
............\.....\....\davinciUBLhex.cmd
............\.....\....\genBinFlashImage.bat
............\.....\....\genBinNandImage.bat
............\.....\....\genSrecFlashImage.bat
............\.....\....\genSrecNandImage.bat
............\.....\....\genSrecUartImage.bat
............\.....\....\Image
............\.....\....\makeAPProm.pl
............\.....\....\makeUBLrom.bat
............\.....\....\makeUBLrom.pl
............\.....\....\makeUBLtxt.bat
............\.....\....\src
............\.....\....\...\createFlashImage.c
............\.....\....\...\d2u.c

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