| /* |
| * Copyright (c) 2013-2014 Wind River Systems, Inc. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| /** |
| * @file |
| * @brief ARM Cortex-M System Control Block interface |
| * |
| * |
| * Most of the SCB interface consists of simple bit-flipping methods, and is |
| * implemented as inline functions in scb.h. This module thus contains only data |
| * definitions and more complex routines, if needed. |
| */ |
| |
| #include <kernel.h> |
| #include <arch/cpu.h> |
| #include <misc/util.h> |
| #include <arch/arm/cortex_m/cmsis.h> |
| |
| #if defined(CONFIG_SOC_TI_LM3S6965_QEMU) |
| /* |
| * QEMU is missing the support for rebooting through the SYSRESETREQ mechanism. |
| * Just jump back to __reset() of the image in flash, which address can |
| * _always_ be found in the vector table reset slot located at address 0x4. |
| */ |
| |
| static void software_reboot(void) |
| { |
| extern void _do_software_reboot(void); |
| extern void _force_exit_one_nested_irq(void); |
| /* |
| * force enable interrupts locked via PRIMASK if somehow disabled: the |
| * boot code does not enable them |
| */ |
| __asm__ volatile("cpsie i" :::); |
| |
| if ((SCB->ICSR & SCB_ICSR_VECTACTIVE_Msk) == 0) { |
| _do_software_reboot(); |
| } else { |
| __asm__ volatile( |
| "ldr r0, =_force_exit_one_nested_irq\n\t" |
| "bx r0\n\t" |
| :::); |
| } |
| } |
| #define DO_REBOOT() software_reboot() |
| #else |
| #define DO_REBOOT() NVIC_SystemReset() |
| #endif |
| |
| /** |
| * |
| * @brief Reset the system |
| * |
| * This routine resets the processor. |
| * |
| * @return N/A |
| */ |
| |
| void sys_arch_reboot(int type) |
| { |
| ARG_UNUSED(type); |
| DO_REBOOT(); |
| } |