d57685c93e
Updating global variable's name to follow a consistent naming convention.
Change accomplished with the following script:
#!/bin/bash
echo "Searching for ${1} to replace with ${2}"
find ./ \( -name "*.[chs]" -o -name "sysgen.py" -o -name "*.kconf" \) \
! -path "./host/src/genIdt/*" \
! -path "*/outdir/*" | xargs sed -i 's/\b'${1}'\b/'${2}'/g';
Change-Id: I3d7f9dfe1874d189fa613088efd8c056b974e01b
Signed-off-by: Yonattan Louise <yonattan.a.louise.mendoza@intel.com>
192 lines
6.4 KiB
C
192 lines
6.4 KiB
C
/* nanoinit.c - VxMicro nanokernel initialization module */
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/*
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* Copyright (c) 2010-2014 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 contains routines that are used to initialize the nanokernel.
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*/
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#include <toolchain.h>
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#include <sections.h>
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#ifdef CONFIG_MICROKERNEL
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#include <minik.h>
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#endif /* CONFIG_MICROKERNEL */
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#include <nanok.h>
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/* stack space for the background task context */
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static char __noinit _k_init_and_idle_task_stack[CONFIG_MAIN_STACK_SIZE];
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/* storage space for the interrupt stack */
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#ifndef CONFIG_NO_ISRS
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/*
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* The symbol for the interrupt stack area is NOT static since it's
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* referenced from a BSPs crt0.s module when setting up the temporary
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* stack used during the execution of kernel initialization sequence, i.e.
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* up until the first context switch. The dual-purposing of this area of
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* memory is safe since interrupts are disabled until the first context
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* switch.
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*
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* The NO_ISRS option is only supported with the 'lxPentium4' BSP, but
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* this BSP doesn't need to setup the aforementioned temporary stack.
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*/
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char __noinit _interrupt_stack[CONFIG_ISR_STACK_SIZE];
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#endif
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/*
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* The kernel allows a BSP to pass arguments to the background task in
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* a nanokernel-only system, or the idle task in a microkernel system,
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* but this isn't advertised at the moment since there isn't a use case
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* for this capability. However, one may arise in a future release ...
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*/
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extern void main(int argc, char *argv[], char *envp[]);
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/*******************************************************************************
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*
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* _nano_init - Initializes the nanokernel layer
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*
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* This function is invoked from a BSP's initialization routine, which is in
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* turn invoked by crt0.s. The following is a summary of the early nanokernel
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* initialization sequence:
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*
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* crt0.s -> _Cstart() -> _nano_init()
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* -> _nano_fiber_swap()
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*
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* main () -> kernel_init () -> task_fiber_start(... K_swapper ...)
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*
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* The _nano_init() routine initializes a context for the main() routine
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* (aka background context which is a task context)), and sets _NanoKernel.task
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* to the 'tCCS *' for the new context. The _NanoKernel.current field is set to
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* the provided <dummyOutContext> tCCS, however _NanoKernel.fiber is set to
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* NULL.
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*
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* Thus the subsequent invocation of _nano_fiber_swap() depicted above results
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* in a context switch into the main() routine. The <dummyOutContext> will
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* be used as the context save area for the swap. Typically, <dummyOutContext>
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* is a temp area on the current stack (as setup by crt0.s).
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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 _nano_init(tCCS *dummyOutContext, int argc, char *argv[], char *envp[])
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{
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/*
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* Setup enough information re: the current execution context to permit
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* a level of debugging output if an exception should happen to occur
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* during _IntLibInit() or _AppContextInit(), for example. However,
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* don't
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* waste effort initializing the fields of the dummy context beyond
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* those
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* needed to identify it as a dummy context.
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*/
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_NanoKernel.current = dummyOutContext;
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dummyOutContext->link =
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(tCCS *)NULL; /* context not inserted into list */
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dummyOutContext->flags = FIBER | ESSENTIAL;
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dummyOutContext->prio = 0;
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#ifndef CONFIG_NO_ISRS
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/*
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* The interrupt library needs to be initialized early since a series of
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* handlers are installed into the interrupt table to catch spurious
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* interrupts. This must be performed before other nanokernel
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* subsystems
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* install bonafide handlers, or before hardware device drivers are
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* initialized (in the BSPs' _InitHardware).
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*/
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_IntLibInit();
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#endif
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#if defined(CONFIG_MICROKERNEL)
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#endif
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#if defined(CONFIG_HOST_TOOLS_SUPPORT)
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/* initialize the linked list of all contexts */
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/* _NanoKernel.contexts = NULL; not needed since _NanoKernel is in .bss */
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#endif /* CONFIG_HOST_TOOLS_SUPPORT */
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/*
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* Initialize the context control block (CCS) for the main (aka
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* background)
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* context. The entry point for the background context is hardcoded as
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* 'main'.
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*/
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_NanoKernel.task =
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_NewContext(_k_init_and_idle_task_stack, /* pStackMem */
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CONFIG_MAIN_STACK_SIZE, /* stackSize */
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(_ContextEntry)main, /* pEntry */
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(_ContextArg)argc, /* parameter1 */
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(_ContextArg)argv, /* parameter2 */
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(_ContextArg)envp, /* parameter3 */
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-1, /* priority */
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0 /* options */
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);
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/* indicate that failure of this task may be fatal to the entire system
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*/
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_NanoKernel.task->flags |= ESSENTIAL;
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#if defined(CONFIG_MICROKERNEL)
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/* fill in microkernel's TCB, which is the last element in _k_task_list[]
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*/
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_k_task_list[K_TaskCount].workspace = (char *)_NanoKernel.task;
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_k_task_list[K_TaskCount].worksize = CONFIG_MAIN_STACK_SIZE;
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#endif
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/*
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* Initialize the nanokernel (tNANO) structure specifying the dummy
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* context
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* as the currently executing fiber context.
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*/
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_NanoKernel.fiber = NULL;
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#ifdef CONFIG_FP_SHARING
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_NanoKernel.current_fp = NULL;
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#endif /* CONFIG_FP_SHARING */
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nanoArchInit();
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}
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