/*
 * Devicetree Overlay for 128KB Flash
 * - MCUboot Bootloader (32KB)
 * - Application Slot (96KB)
 */

&flash0 {
        /delete-node/ partitions;
        partitions {
                compatible = "fixed-partitions";
                #address-cells = <1>;
                #size-cells = <1>;

                boot_partition: partition@0 {
                        label = "mcuboot";
                        reg = <0x00000000 DT_SIZE_K(32)>;
                        read-only;
                };

                slot0_partition: partition@8000 {
                        label = "image-0";
                        reg = <0x00008000 DT_SIZE_K(96)>;
                };
        };
};

/* Add retention memory to the existing SRAM node */
&sram0 {
        #address-cells = <1>;
        #size-cells = <1>;
        
        retainedmem {
                compatible = "zephyr,retained-ram";
                status = "okay";
                #address-cells = <1>;
                #size-cells = <1>;
                
                boot_mode: retention@7f00 {
                        compatible = "zephyr,retention";
                        status = "okay";
                        reg = <0x7f00 0x100>;
                        prefix = [08 04];
                        checksum = <1>;
                };
        };
};

/ {
        chosen {
                zephyr,boot-mode = &boot_mode;
                zephyr,console = &cdc_acm_uart0;
    };
};

&zephyr_udc0 {
    status = "okay";
    
    cdc_acm_uart0: cdc_acm_uart0 {
        compatible = "zephyr,cdc-acm-uart";
        label = "CDC_ACM_0";
    };
};