Base Platform Application Binary Interface (BPABI) files have a standard memory model that is described in the BPABI specification. By using the --bpabi command-line option, the linker automatically applies this model and ignores any scatter file that you specify on the command-line. This is equivalent to the following image layout:

LR_1 <read-only base address>
{
    ER_RO  +0
    {
        *(+RO)
    }
}
LR_2 <read-write base address>
{
    ER_RW  +0
    {
        *(+RW)
    }
    ER_ZI  +0
    {
        *(+ZI)
    }
}