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‎.gitattributes

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# used to remove files from deployment using `git archive`
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# git files
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.gitattributes export-ignore
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.gitignore export-ignore
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.mailmap export-ignore

‎.gitignore

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*.o
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*.a
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*.d
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.dir
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outdir
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samples/libc/minimal-*-O?
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linux2/
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host/x86-linux2/bin/gen*
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host/x86-linux2/bin/bin2hex
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host/x86-linux2/bin/dec2hex
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host/x86-linux2/bin/mkevents
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host/x86-linux2/bin/sysgen

‎.mailmap

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Dirk Brandewie <[email protected]> <[email protected]>

‎arch/arc/bsp/fatal_error.c

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/* fatal_error.c - ARCv2 system fatal error handler */
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/*
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* Copyright (c) 2014 Wind River Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of Wind River Systems nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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DESCRIPTION
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This module provides the _SysFatalErrorHandler() routine for ARCv2 BSPs.
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*/
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/* includes */
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#include <cputype.h>
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#include <nanokernel.h>
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#include <nanokernel/cpu.h>
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#include <toolchain.h>
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#include <sections.h>
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#include "board.h"
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#ifdef CONFIG_PRINTK
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#include <misc/printk.h>
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#define PRINTK(...) printk(__VA_ARGS__)
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#else
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#define PRINTK(...)
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#endif
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#ifdef CONFIG_MICROKERNEL
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extern void _TaskAbort(void);
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static inline void nonEssentialTaskAbort(void)
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{
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PRINTK("Fatal fault in task ! Aborting task.\n");
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_TaskAbort();
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}
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#define NON_ESSENTIAL_TASK_ABORT() nonEssentialTaskAbort()
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#else
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#define NON_ESSENTIAL_TASK_ABORT() \
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do {/* nothing */ \
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} while ((0))
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#endif
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/*******************************************************************************
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*
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* _SysFatalErrorHandler - fatal error handler
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*
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* This routine implements the corrective action to be taken when the system
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* detects a fatal error.
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*
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* This sample implementation attempts to abort the current context and allow
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* the system to continue executing, which may permit the system to continue
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* functioning with degraded capabilities.
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*
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* System designers may wish to enhance or substitute this sample
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* implementation to take other actions, such as logging error (or debug)
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* information to a persistent repository and/or rebooting the system.
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*
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* RETURNS: N/A
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*
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* \NOMANUAL
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*/
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void _SysFatalErrorHandler(
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unsigned int reason, /* fatal error reason */
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const NANO_ESF *pEsf /* pointer to exception stack frame */
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)
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{
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nano_context_type_t curCtx = context_type_get();
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ARG_UNUSED(reason);
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ARG_UNUSED(pEsf);
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if ((curCtx == NANO_CTX_ISR) || _context_essential_check(NULL)) {
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PRINTK("Fatal fault in %s ! Spinning...\n",
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NANO_CTX_ISR == curCtx
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? "ISR"
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: NANO_CTX_FIBER == curCtx ? "essential fiber"
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: "essential task");
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for (;;)
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; /* spin forever */
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}
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if (NANO_CTX_FIBER == curCtx) {
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PRINTK("Fatal fault in fiber ! Aborting fiber.\n");
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fiber_abort();
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return;
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}
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NON_ESSENTIAL_TASK_ABORT();
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}

‎arch/arc/bsp/prep_c.c

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/* prep_c.c - full C support initialization */
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/*
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* Copyright (c) 2014 Wind River Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of Wind River Systems nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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DESCRIPTION
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Initialization of full C support: zero the .bss, copy the .data if XIP,
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call _Cstart().
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Stack is available in this module, but not the global data/bss until their
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initialization is performed.
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*/
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#include <stdint.h>
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#include <toolchain.h>
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#include <linker-defs.h>
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/*******************************************************************************
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*
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* bssZero - clear BSS
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*
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* This routine clears the BSS region, so all bytes are 0.
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*
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* RETURNS: N/A
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*/
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static void bssZero(void)
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{
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volatile uint32_t *pBSS = (uint32_t *)&__bss_start;
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unsigned int n;
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for (n = 0; n < (unsigned int)&__bss_num_words; n++) {
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pBSS[n] = 0;
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}
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}
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/*******************************************************************************
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*
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* dataCopy - copy the data section from ROM to RAM
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*
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* This routine copies the data section from ROM to RAM.
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*
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* RETURNS: N/A
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*/
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#ifdef CONFIG_XIP
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static void dataCopy(void)
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{
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volatile uint32_t *pROM = (uint32_t *)&__data_rom_start;
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volatile uint32_t *pRAM = (uint32_t *)&__data_ram_start;
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unsigned int n;
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for (n = 0; n < (unsigned int)&__data_num_words; n++) {
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pRAM[n] = pROM[n];
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}
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}
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#else
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static void dataCopy(void)
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{
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}
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#endif
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extern FUNC_NORETURN void _Cstart(void);
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/*******************************************************************************
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*
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* _PrepC - prepare to and run C code
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*
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* This routine prepares for the execution of and runs C code.
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*
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* RETURNS: N/A
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*/
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void _PrepC(void)
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{
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bssZero();
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dataCopy();
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_Cstart();
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CODE_UNREACHABLE;
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}

‎arch/arc/bsp/reset.s

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/* reset.s - reset handler */
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/*
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* Copyright (c) 2014 Wind River Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of Wind River Systems nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
18+
* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21+
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22+
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
24+
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25+
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26+
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27+
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28+
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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DESCRIPTION
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Reset handler that prepares the system for running C code.
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*/
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#define _ASMLANGUAGE
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#include <board.h>
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#include <toolchain.h>
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#include <sections.h>
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#include <nanokernel/cpu.h>
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#define _RAM_END (CONFIG_RAM_START + CONFIG_RAM_SIZE)
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GTEXT(__reset)
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/*******************************************************************************
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*
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* __reset - reset vector
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*
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* Ran when the system comes out of reset. The processor is at supervisor level.
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*
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* Locking interrupts prevents anything from interrupting the CPU.
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*
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* When these steps are completed, jump to _PrepC(), which will finish setting
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* up the system for running C code.
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*
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* RETURNS: N/A
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*/
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SECTION_FUNC(TEXT,__reset)
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/* lock interrupts: will get unlocked when switch to main task */
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clri
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/* setup a stack at the end of the RAM */
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mov sp, _RAM_END
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j @_PrepC

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