Here is a full linker command file that uses the crc() operator to generate a memory range CRC:

-c              /* Use C linking conventions: auto-init vars at runtime */
-stack  0x8000  /* Stack size */
-heap   0x8000  /* Heap size */
--args  0x100

MEMORY
{
PAGE 0:
    STACK (RW)     : origin = 0x008000, length = 0x008000
    SMALLROM (R)   : origin = 0x000402, length = 0x0003FE
    ROMCRC (R)     : origin = 0x080000, length = 0x000100

    GROUP(FLASH)
    {
        BIGROM (R) : origin = 0x080100, length = 0x01FF00, VFILL=0x0
    } crc(_ext_memrange_crc, algorithm=CRC8_PRIME)
    BIGRAM (RW)    : origin = 0x100000, length = 0x200000
}

SECTIONS
{
    .stack         > STACK
    .args          > BIGRAM
    .bss           > BIGRAM
    .ebss          > BIGRAM
    .cio           > BIGRAM
    .data          > BIGRAM

    .esysmem       > BIGRAM
    .sysmem        > BIGRAM

    .text          > BIGROM
    .const         > BIGROM
    .econst        > BIGROM
    .binit         > BIGROM
    .cinit         > BIGROM
    .pinit         > BIGROM
    .ovly          > BIGROM
    .TI.memcrc     > ROMCRC
}