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Last Post 30 Oct 2013 03:44 PM by  steven.eckhoff
Boot modes in OMAP-L138 EVM Development Kit
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steven.eckhoff
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30 Oct 2013 03:02 PM
    Please provide more details of different boot modes in OMAP-L138 EVM Development Kit and which mode should be used while debugging. 
    Also want to know ,".out file” will be stored in which memory(flash or RAM).
    steven.eckhoff
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    30 Oct 2013 03:44 PM
    High Level Default Boot Steps (S7 All Off):

    1. ARM ROM bootloader runs
    2. Reset is released and the ARM ROM bootloader samples the boot pins
    3. The value sampled on the boot pins is latched into the BOOTCFG register in the SYSCFG module
    4. The default configuration is BOOT BITS = 0110 (S7 all off) which is SPI1 Flash, so UBL and U-Boot are stored there
    5. The UBL does configuration and then boots U-Boot
    6. U-Boot does more configuration and then pulls the kernel image from the first partition on the SD card and puts it in RAM where it can be executed
    7. Once the kernel is booted it mounts the rootfs stored in the second partition on the SD card using the ext3 file system

    The other boot options are (See the hardware design files [1] for more detail):

    NOR EMIFA 0001
    NAND-8 EMIFA 0111
    SPI0 FLASH 0101
    SPI1 FLASH (Default) 0110
    UART0 1011
    UART2 1010
    EMULATOR DEBUG 1111

    [1] http://support.logicpd.co...rtalid=0&EntryId=767
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