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tests: boards: nrf: Add test for external flash XIP handling
Add nRF specific test to check if it possible for multiple users to enable XIP independently and also if XIP can be successfully re-enabled (see fb1d078). Signed-off-by: Andrzej Głąbek <andrzej.glabek@nordicsemi.no>
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‎tests/boards/nrf/xip/CMakeLists.txt

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# SPDX-License-Identifier: Apache-2.0
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cmake_minimum_required(VERSION 3.20.0)
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find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
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project(xip)
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FILE(GLOB app_sources src/*.c)
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target_sources(app PRIVATE ${app_sources})
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zephyr_code_relocate(FILES src/extflash.c LOCATION EXTFLASH_TEXT NOCOPY)
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zephyr_code_relocate(FILES src/extflash.c LOCATION EXTFLASH_RODATA NOCOPY)

‎tests/boards/nrf/xip/boards/nrf5340dk_nrf5340_cpuapp.overlay

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dut: &mx25r64 {
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status = "okay";
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};

‎tests/boards/nrf/xip/extflash.ld

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/*
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* Copyright (c) 2025 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/linker/sections.h>
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#include <zephyr/devicetree.h>
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#include <zephyr/linker/linker-defs.h>
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#include <zephyr/linker/linker-tool.h>
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#define EXTFLASH_NODE DT_NODELABEL(dut)
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#define EXTFLASH_SIZE DT_PROP_OR(EXTFLASH_NODE, size_in_bytes, \
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DT_PROP(EXTFLASH_NODE, size) / 8)
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#if defined(CONFIG_NORDIC_QSPI_NOR) && defined(CONFIG_SOC_NRF5340_CPUAPP)
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#define EXTFLASH_ADDR 0x10000000
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#elif defined(CONFIG_FLASH_MSPI_NOR) && defined(CONFIG_SOC_NRF54H20_CPUAPP)
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#define EXTFLASH_ADDR 0x60000000
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#else
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#error Unsupported target
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#endif
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MEMORY
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{
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EXTFLASH (rx) : ORIGIN = EXTFLASH_ADDR, LENGTH = EXTFLASH_SIZE
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}
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#include <zephyr/arch/arm/cortex_m/scripts/linker.ld>

‎tests/boards/nrf/xip/prj.conf

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CONFIG_ZTEST=y
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CONFIG_FLASH=y
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CONFIG_CODE_DATA_RELOCATION=y
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CONFIG_HAVE_CUSTOM_LINKER_SCRIPT=y
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CONFIG_CUSTOM_LINKER_SCRIPT="extflash.ld"

‎tests/boards/nrf/xip/src/extflash.c

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/*
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* Copyright (c) 2025 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/ztest.h>
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#include "extflash.h"
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const char extflash_string[] = EXPECTED_EXTFLASH_STRING;
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void extflash_function1(void)
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{
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TC_PRINT("Executing %s at %p\n", __func__, &extflash_function1);
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}
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void extflash_function2(void)
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{
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TC_PRINT("Executing %s at %p\n", __func__, &extflash_function2);
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}

‎tests/boards/nrf/xip/src/extflash.h

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/*
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* Copyright (c) 2025 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#define EXPECTED_EXTFLASH_STRING "Nordic Semiconductor"
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extern const char extflash_string[];
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void extflash_function1(void);
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void extflash_function2(void);

‎tests/boards/nrf/xip/src/main.c

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/*
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* Copyright (c) 2025 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/kernel.h>
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#include <zephyr/ztest.h>
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#if defined(CONFIG_NORDIC_QSPI_NOR)
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#include <zephyr/drivers/flash/nrf_qspi_nor.h>
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#endif
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#include "extflash.h"
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#define EXTFLASH_NODE DT_NODELABEL(dut)
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static const struct device *dev_flash = DEVICE_DT_GET(EXTFLASH_NODE);
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static void check_extflash_string(void)
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{
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TC_PRINT("Accessing extflash_string at %p: %s\n",
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extflash_string, extflash_string);
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zassert_equal(0, strcmp(extflash_string, EXPECTED_EXTFLASH_STRING));
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}
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static void xip_enable(bool enable)
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{
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#if defined(CONFIG_NORDIC_QSPI_NOR)
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nrf_qspi_nor_xip_enable(dev_flash, enable);
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#endif
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}
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ZTEST(xip, test_xip_enable_disable)
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{
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xip_enable(true);
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extflash_function1();
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check_extflash_string();
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xip_enable(false);
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/* This is to ensure that the next XIP access will result in a new
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* transfer from the flash chip, as the required data will not be
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* available in cache.
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*/
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k_sleep(K_MSEC(10));
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xip_enable(true);
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extflash_function2();
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check_extflash_string();
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xip_enable(false);
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}
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ZTEST(xip, test_xip_enabled_at_boot)
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{
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if (!IS_ENABLED(CONFIG_NORDIC_QSPI_NOR_XIP)) {
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ztest_test_skip();
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}
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extflash_function1();
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check_extflash_string();
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xip_enable(true);
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extflash_function2();
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xip_enable(false);
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k_sleep(K_MSEC(10));
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/* XIP enabled at boot should stay active after it is temporarily
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* enabled at runtime.
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*/
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extflash_function1();
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check_extflash_string();
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}
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static void third_xip_user(void)
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{
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xip_enable(true);
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check_extflash_string();
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xip_enable(false);
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}
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static void second_xip_user(void)
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{
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xip_enable(true);
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extflash_function2();
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third_xip_user();
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xip_enable(false);
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}
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ZTEST(xip, test_xip_multiple_users)
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{
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xip_enable(true);
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extflash_function1();
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second_xip_user();
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extflash_function1();
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check_extflash_string();
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xip_enable(false);
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}
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ZTEST_SUITE(xip, NULL, NULL, NULL, NULL, NULL);

‎tests/boards/nrf/xip/testcase.yaml

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common:
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harness: ztest
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tags:
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- drivers
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- flash
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tests:
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boards.nrf.xip:
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platform_allow:
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- nrf5340dk/nrf5340/cpuapp
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integration_platforms:
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- nrf5340dk/nrf5340/cpuapp
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boards.nrf.xip.enabled_at_boot.qspi:
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extra_configs:
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- CONFIG_NORDIC_QSPI_NOR_XIP=y
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platform_allow:
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- nrf5340dk/nrf5340/cpuapp
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integration_platforms:
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- nrf5340dk/nrf5340/cpuapp

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