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kernel_init.c
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kernel_init.c
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#ifndef NVALGRIND
#include <valgrind/valgrind.h>
#endif
#include "bios.h"
#include "tinyos.h"
#include "kernel_sched.h"
#include "kernel_proc.h"
#include "kernel_dev.h"
#include "kernel_streams.h"
/*
*
* Initialization code
*
*/
/* Parameters from the 'boot' call are passed to boot_tinyos()
via static variables. */
static struct {
Task init_task;
int argl;
void* args;
} boot_rec;
/* Per-core boot function for tinyos */
void boot_tinyos_kernel()
{
if(cpu_core_id==0) {
/* Initialize the kenrel data structures */
initialize_processes();
initialize_devices();
initialize_files();
initialize_scheduler();
/* The boot task is executed normally! */
if(Exec(boot_rec.init_task, boot_rec.argl, boot_rec.args)!=1)
FATAL("The init process does not have PID==1");
}
cpu_core_barrier_sync();
#ifndef NVALGRIND
VALGRIND_PRINTF_BACKTRACE("TINYOS: Entering scheduler for core %d\n",cpu_core_id);
#endif
run_scheduler();
if(cpu_core_id==0) {
/* Here, we could add cleanup after the scheduler has ended. */
}
}
void boot(uint ncores, uint nterm, Task boot_task, int argl, void* args)
{
boot_rec.init_task = boot_task;
boot_rec.argl = argl;
boot_rec.args = args;
vm_boot(boot_tinyos_kernel, ncores, nterm);
}