---

у меня есть полностью рабочий пример hello_world c запуском c SDRAM. 
CONFIG_NXP_FLEXSPI_ROM_RAMLOADER=y

/delete-node/ &sdram0;
/ {
        chosen {
                zephyr,flash = &sdram_code;
                zephyr,sram = &sdram_data;
        };

        /* Divide SDRAM into two partitions for Code and Data */
        /* Micron MT48LC16M16A2B4-6AIT:G */
        sdram_code: memory@80000000 {
                device_type = "memory";
                reg = <0x80000000 DT_SIZE_M(16)>;
        };
        sdram_data: memory@81000000 {
                device_type = "memory";
                reg = <0x81000000 DT_SIZE_M(16)>;
        };
};

prj.conf
# Generate HEX file to confirm addresses written to flash
CONFIG_BUILD_OUTPUT_HEX=y

Kconfig
if NXP_FLEXSPI_ROM_RAMLOADER

# Adjust LMA when zephyr,flash is in SDRAM
FLASH_CHOSEN := zephyr,flash
FLASH_BASE := $(dt_chosen_reg_addr_hex,$(FLASH_CHOSEN))
FLEXSPI_BASE := $(dt_nodelabel_reg_addr_hex,flexspi,1)
config BUILD_OUTPUT_ADJUST_LMA
        default "0x100000000 - $(FLASH_BASE) + $(FLEXSPI_BASE)"

endif # NXP_FLEXSPI_ROM_RAMLOADER

source "Kconfig.zephyr"

при этом в финальном конфиге CONFIG_XIP=y

если я собираю в своём проекте такую связку, то получаю:
zephyrproject/zephyr/build_rt1024/build_pjsip/zephyr/zephyr.elf
Memory region         Used Size  Region Size  %age Used
           SDRAM:          0 GB        16 MB      0.00%
           FLASH:     2136076 B        16 MB     12.73%
             RAM:      327052 B        16 MB      1.95%
            ITCM:          0 GB        64 KB      0.00%
            DTCM:      106624 B       128 KB     81.35%
           OCRAM:          0 GB        64 KB      0.00%
        IDT_LIST:          0 GB        32 KB      0.00%
Generating files from /home/vovan/ZEPHYR_RTOS/zephyrproject/zephyr/build_rt1024/build_pjsip/zephyr/zephyr.elf for board: mimxrt1024_evk
/home/vovan/ZEPHYR_RTOS/zephyrsdk/zephyr-sdk-0.16.3/arm-zephyr-eabi/bin/arm-zephyr-eabi-objcopy: zephyr.elf: error in private header data: sorry, cannot handle this file

если включаю CONFIG_XIP=n:
[805/805] Linking C executable zephyr/zephyr.elf
Memory region         Used Size  Region Size  %age Used
           SDRAM:          0 GB        16 MB      0.00%
           FLASH:          0 GB        16 MB      0.00%
             RAM:     2416012 B        16 MB     14.40%
            ITCM:          0 GB        64 KB      0.00%
            DTCM:      106624 B       128 KB     81.35%
           OCRAM:          0 GB        64 KB      0.00%
        IDT_LIST:          0 GB        32 KB      0.00%
Generating files from /home/vovan/ZEPHYR_RTOS/zephyrproject/zephyr/build_rt1024/build_pjsip/zephyr/zephyr.elf for board: mimxrt1024_evk