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164 lines
6.1 KiB
C
164 lines
6.1 KiB
C
/******************************************************************************
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* *
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* License Agreement *
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* *
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* Copyright (c) 2007 Altera Corporation, San Jose, California, USA. *
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* All rights reserved. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the "Software"), *
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* to deal in the Software without restriction, including without limitation *
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* the rights to use, copy, modify, merge, publish, distribute, sublicense, *
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* and/or sell copies of the Software, and to permit persons to whom the *
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* Software is furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in *
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* all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE *
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER *
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *
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* DEALINGS IN THE SOFTWARE. *
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* *
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* This agreement shall be governed in all respects by the laws of the State *
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* of California and by the laws of the United States of America. *
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* *
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* Altera does not recommend, suggest or require that this reference design *
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* file be used in conjunction or combination with any other product. *
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******************************************************************************/
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#include <stdio.h>
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#include <stdarg.h>
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#include <string.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "sys/alt_dev.h"
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#include "sys/alt_sys_init.h"
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//#include "sys/alt_irq.h"
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#include "sys/alt_dev.h"
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#include "os/alt_hooks.h"
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#include "priv/alt_file.h"
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#include "alt_types.h"
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#include "system.h"
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#include "sys/alt_log_printf.h"
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extern void alt_irq_init ( const void* base );
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extern void _do_ctors(void);
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extern void _do_dtors(void);
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/*
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* Standard arguments for main. By default, no arguments are passed to main.
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* However a device driver may choose to configure these arguments by calling
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* alt_set_args(). The expectation is that this facility will only be used by
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* the iclient/ihost utility.
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*/
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int alt_argc = 0;
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char** alt_argv = {NULL};
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char** alt_envp = {NULL};
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/*
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* Prototype for the entry point to the users application.
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*/
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extern int main (int, char **, char **);
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/*
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* alt_main is the C entry point for the HAL. It is called by the assembler
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* startup code in the processor specific crt0.S. It is responsible for:
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* completing the C runtime configuration; configuring all the
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* devices/filesystems/components in the system; and call the entry point for
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* the users application, i.e. main().
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*/
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void alt_main (void)
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{
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#ifndef ALT_NO_EXIT
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int result;
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#endif
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/* ALT LOG - please see HAL/sys/alt_log_printf.h for details */
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ALT_LOG_PRINT_BOOT("[alt_main.c] Entering alt_main, calling alt_irq_init.\r\n");
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/* Initialize the interrupt controller. */
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alt_irq_init (NULL);
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/* Initialize the operating system */
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ALT_LOG_PRINT_BOOT("[alt_main.c] Done alt_irq_init, calling alt_os_init.\r\n");
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ALT_OS_INIT();
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/*
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* Initialize the semaphore used to control access to the file descriptor
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* list.
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*/
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ALT_LOG_PRINT_BOOT("[alt_main.c] Done OS Init, calling alt_sem_create.\r\n");
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ALT_SEM_CREATE (&alt_fd_list_lock, 1);
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/* Initialize the device drivers/software components. */
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ALT_LOG_PRINT_BOOT("[alt_main.c] Calling alt_sys_init.\r\n");
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alt_sys_init();
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ALT_LOG_PRINT_BOOT("[alt_main.c] Done alt_sys_init.\r\n");
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#if !defined(ALT_USE_DIRECT_DRIVERS) && (defined(ALT_STDIN_PRESENT) || defined(ALT_STDOUT_PRESENT) || defined(ALT_STDERR_PRESENT))
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/*
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* Redirect stdio to the apropriate devices now that the devices have
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* been initialized. This is only done if the user has requested these
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* devices be present (not equal to /dev/null) and if direct drivers
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* aren't being used.
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*/
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ALT_LOG_PRINT_BOOT("[alt_main.c] Redirecting IO.\r\n");
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alt_io_redirect(ALT_STDOUT, ALT_STDIN, ALT_STDERR);
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#endif
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#ifndef ALT_NO_C_PLUS_PLUS
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/*
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* Call the C++ constructors
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*/
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ALT_LOG_PRINT_BOOT("[alt_main.c] Calling C++ constructors.\r\n");
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_do_ctors ();
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#endif /* ALT_NO_C_PLUS_PLUS */
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#if !defined(ALT_NO_C_PLUS_PLUS) && !defined(ALT_NO_CLEAN_EXIT) && !defined(ALT_NO_EXIT)
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/*
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* Set the C++ destructors to be called at system shutdown. This is only done
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* if a clean exit has been requested (i.e. the exit() function has not been
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* redefined as _exit()). This is in the interest of reducing code footprint,
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* in that the atexit() overhead is removed when it's not needed.
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*/
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ALT_LOG_PRINT_BOOT("[alt_main.c] Calling atexit.\r\n");
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atexit (_do_dtors);
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#endif
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/*
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* Finally, call main(). The return code is then passed to a subsequent
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* call to exit() unless the application is never supposed to exit.
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*/
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ALT_LOG_PRINT_BOOT("[alt_main.c] Calling main.\r\n");
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#ifdef ALT_NO_EXIT
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main (alt_argc, alt_argv, alt_envp);
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#else
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result = main (alt_argc, alt_argv, alt_envp);
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close(STDOUT_FILENO);
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exit (result);
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#endif
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ALT_LOG_PRINT_BOOT("[alt_main.c] After main - we should not be here?.\r\n");
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}
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