60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
/*
|
|
* 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 z_cstart().
|
|
*
|
|
* Stack is available in this module, but not the global data/bss until their
|
|
* initialization is performed.
|
|
*/
|
|
|
|
#include <zephyr/types.h>
|
|
#include <zephyr/toolchain.h>
|
|
#include <zephyr/linker/linker-defs.h>
|
|
#include <zephyr/kernel_structs.h>
|
|
#include <kernel_internal.h>
|
|
#include <zephyr/platform/hooks.h>
|
|
#include <zephyr/arch/cache.h>
|
|
|
|
/**
|
|
* @brief Prepare to and run C code
|
|
*
|
|
* This routine prepares for the execution of and runs C code.
|
|
*/
|
|
|
|
void z_prep_c(void)
|
|
{
|
|
#if defined(CONFIG_SOC_PREP_HOOK)
|
|
soc_prep_hook();
|
|
#endif
|
|
|
|
z_bss_zero();
|
|
z_data_copy();
|
|
/* In most XIP scenarios we copy the exception code into RAM, so need
|
|
* to flush instruction cache.
|
|
*/
|
|
#ifdef CONFIG_XIP
|
|
z_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.
|
|
*/
|
|
z_nios2_dcache_flush_all();
|
|
#endif
|
|
#endif
|
|
#if CONFIG_ARCH_CACHE
|
|
arch_cache_init();
|
|
#endif
|
|
z_cstart();
|
|
CODE_UNREACHABLE;
|
|
}
|