/*
 * nRF52840 — no SoftDevice
 * Flash: 1 MB @ 0x00000000
 * RAM:   256 KB @ 0x20000000
 *
 * Before first flash, erase the entire chip to remove any SoftDevice:
 *   pyocd erase --target nrf52840 --chip
 */

MEMORY
{
    FLASH (rx)  : ORIGIN = 0x00000000, LENGTH = 1024K
    RAM   (rwx) : ORIGIN = 0x20000000, LENGTH = 256K
}

/* stack grows downward from the top of RAM */
_estack = ORIGIN(RAM) + LENGTH(RAM);

ENTRY(Reset_Handler)

SECTIONS
{
    /* vector table must be at the start of Flash */
    .isr_vector :
    {
        KEEP(*(.isr_vector))
        . = ALIGN(4);
    } > FLASH

    /* code and read-only data */
    .text :
    {
        *(.text .text.*)
        *(.rodata .rodata.*)
        . = ALIGN(4);
        _etext = .;
    } > FLASH

    /* load address of .data in Flash — Reset_Handler copies from here */
    _sidata = LOADADDR(.data);

    /* initialized variables: stored in Flash, run from RAM */
    .data :
    {
        _sdata = .;
        *(.data .data.*)
        . = ALIGN(4);
        _edata = .;
    } > RAM AT > FLASH

    /* zero-initialized variables: Reset_Handler clears this region */
    .bss (NOLOAD) :
    {
        _sbss = .;
        *(.bss .bss.*)
        *(COMMON)
        . = ALIGN(4);
        _ebss = .;
    } > RAM

    /DISCARD/ :
    {
        *(.ARM.exidx*)
        *(.gnu.linkonce.armexidx.*)
    }
}