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/* * Copyright (c) 2014 Wind River Systems, Inc. * * SPDX-License-Identifier: Apache-2.0 */ /** * @file * @brief Full C support initialization * * * Initialization of full C support: zero the .bss, copy the .data if XIP, * call _Cstart(). * * Stack is available in this module, but not the global data/bss until their * initialization is performed. */ #include <zephyr/types.h> #include <toolchain.h> #include <linker/linker-defs.h> #include <kernel_structs.h> #include <nano_internal.h> /** * * @brief Prepare to and run C code * * This routine prepares for the execution of and runs C code. * * @return N/A */ void _PrepC(void) { _bss_zero(); #ifdef CONFIG_XIP _data_copy(); /* In most XIP scenarios we copy the exception code into RAM, so need * to flush instruction cache. */ _nios2_icache_flush_all(); #if ALT_CPU_ICACHE_SIZE > 0 /* Only need to flush the data cache here if there actually is an * instruction cache, so that the cached instruction data written is * actually committed. */ _nios2_dcache_flush_all(); #endif #endif _Cstart(); CODE_UNREACHABLE; } |