ARM Scatter File Explain

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7.1.6 Scatter-loading images with a simple memory map

For images with a simple memory map, you can specify the memory map using only linker command-line options, or with a scatter file.

The following figure shows a simple memory map:

Figure 7-1 Simple scatter-loaded memory map

The following example shows the corresponding scatter-loading description that loads the segments from the object file into memory:

LOAD_ROM 0x0000 0x8000       ; Name of load region (LOAD_ROM),

                             ; Start address for load region (0x0000),

                             ; Maximum size of load region (0x8000)

{

    EXEC_ROM 0x0000 0x8000   ; Name of first exec region (EXEC_ROM),

                             ; Start address for exec region (0x0000),

                             ; Maximum size of first exec region (0x8000)

    {

        * (+RO)              ; Place all code and RO data into

                             ; this exec region

    }

    SRAM 0x10000 0x6000      ; Name of second exec region (SRAM),

                             ; Start address of second exec region (0x10000),

                             ; Maximum size of second exec region (0x6000)

    {

        * (+RW, +ZI)         ; Place all RW and ZI data into

                             ; this exec region

    }

}