1 /* 2 * Copyright (c) 2016 Linaro Limited 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #include <zephyr/kernel.h> 8 #include <zephyr/sys/printk.h> 9 #include <zephyr/sys/reboot.h> 10 #include <zephyr/sys/barrier.h> 11 #include <cmsis_core.h> 12 #include <zephyr/arch/arm/nmi.h> 13 #include <zephyr/ztest.h> 14 #include <zephyr/tc_util.h> 15 #include <zephyr/cache.h> 16 17 /* on v8m arch the nmi pend bit is renamed to pend nmi map it to old name */ 18 #ifndef SCB_ICSR_NMIPENDSET_Msk 19 #define SCB_ICSR_NMIPENDSET_Msk SCB_ICSR_PENDNMISET_Msk 20 #endif 21 22 static bool nmi_triggered; 23 nmi_test_isr(void)24static void nmi_test_isr(void) 25 { 26 printk("NMI triggered (test_handler_isr)!\n"); 27 /* ISR triggered correctly: test passed! */ 28 nmi_triggered = true; 29 } 30 31 /** 32 * @brief Test the behavior of CONFIG_RUNTIME_NMI at runtime. 33 * @addtogroup kernel_interrupt_tests 34 * @ingroup all_tests 35 * @{ 36 */ 37 38 39 /** 40 * @brief test the behavior of CONFIG_RUNTIME_NMI at run time 41 * 42 * @details this test is to validate z_arm_nmi_set_handler() api. 43 * First we configure the NMI isr using z_arm_nmi_set_handler() api. 44 * After wait for some time, and set the Interrupt Control and 45 * State Register(ICSR) of System control block (SCB). 46 * The registered NMI isr should fire immediately. 47 * 48 * @see z_arm_nmi_set_handler() 49 */ ZTEST(arm_runtime_nmi_fn,test_arm_runtime_nmi)50ZTEST(arm_runtime_nmi_fn, test_arm_runtime_nmi) 51 { 52 uint32_t i = 0U; 53 54 /* Configure the NMI isr */ 55 z_arm_nmi_set_handler(nmi_test_isr); 56 57 for (i = 0U; i < 2; i++) { 58 printk("Trigger NMI in 2s: %d s\n", i); 59 k_sleep(K_MSEC(1000)); 60 } 61 62 /* Trigger NMI: Should fire immediately */ 63 SCB->ICSR |= SCB_ICSR_NMIPENDSET_Msk; 64 65 barrier_dsync_fence_full(); 66 barrier_isync_fence_full(); 67 68 #ifdef ARM_CACHEL1_ARMV7_H 69 /* Flush Data Cache now if enabled */ 70 if (IS_ENABLED(CONFIG_DCACHE)) { 71 sys_cache_data_flush_all(); 72 } 73 #endif /* ARM_CACHEL1_ARMV7_H */ 74 zassert_true(nmi_triggered, "Isr not triggered!\n"); 75 } 76 /** 77 * @} 78 */ 79
