int sys__device_open ( char *dev_name, void **dev )
{
ASSERT_ERRNO_AND_EXIT ( dev_name && dev, E_INVALID_HANDLE );
disable_interrupts ();
*dev = k_device_open ( dev_name );
enable_interrupts ();
return *dev == NULL;
}
/*!
* First kernel function (after grub loads it to memory)
* \param magic Multiboot magic number
* \param addr Address where multiboot structure is saved
*/
void k_startup ( unsigned long magic, unsigned long addr )
{
extern device_t K_INITIAL_STDOUT;
extern kdevice_t *k_stdout; /* console for kernel messages */
kdevice_t k_initial_stdout;
/* default standard input and output devices for user programs */
extern void *u_stdin, *u_stdout;
/* set initial stdout */
k_initial_stdout.dev = K_INITIAL_STDOUT;
k_initial_stdout.dev.init ( 0, NULL, &k_initial_stdout.dev );
k_stdout = &k_initial_stdout;
/* initialize memory subsystem (needed for boot) */
k_memory_init ( magic, addr );
/*! start with regular initialization */
/* interrupts */
arch_init_interrupts ();
/* timer subsystem */
k_time_init ();
/* devices */
k_devices_init ();
/* switch to default 'stdout' for kernel */
k_stdout = k_device_open ( K_STDOUT );
u_stdin = k_device_open ( U_STDIN );
u_stdout = k_device_open ( U_STDOUT );
kprint ( "%s\n", system_info );
enable_interrupts ();
/* start shell */
shell ( NULL );
kprint ( "\nSystem halted!\n" );
halt();
}
/*!
* First kernel function (after boot loader loads it to memory)
*/
void k_startup ()
{
extern void *k_stdout; /* console for kernel messages */
/* set initial stdout */
kdevice_set_initial_stdout ();
/* initialize memory subsystem (needed for boot) */
k_memory_init ();
/*! start with regular initialization */
/* interrupts */
arch_init_interrupts ();
/* detect memory faults (qemu do not detect segment violations!) */
arch_register_interrupt_handler ( INT_MEM_FAULT, k_memory_fault, NULL );
arch_register_interrupt_handler ( INT_UNDEF_FAULT, k_memory_fault, NULL );
/* timer subsystem */
k_time_init ();
/* devices */
k_devices_init ();
/* switch to default 'stdout' for kernel */
k_stdout = k_device_open ( K_STDOUT, O_WRONLY );
kprintf ( "%s\n", system_info );
/* enable interrupts */
enable_interrupts ();
stdio_init (); /* initialize standard input & output devices */
/* start desired program(s) */
hello_world ();
keyboard ();
timer ();
/* segm_fault (); */
#if ( TURN_OFF == 0 )
kprintf ( "\nSystem halted!\n" );
halt ();
#else
/* power off (if supported, or just stop if not) */
kprintf ( "Powering off\n\n" );
power_off ();
#endif
}
int sys__device_open ( void *p )
{
char *dev_name;
void **dev;
dev_name = U2K_GET_ADR ( *( (char **) p ), kthread_get_process (NULL) );
p += sizeof (char *);
dev = U2K_GET_ADR ( *( (void **) p ), kthread_get_process (NULL) );
*dev = k_device_open ( dev_name );
return *dev == NULL;
}
/*!
* First kernel function (after boot loader loads it to memory)
*/
void k_startup ()
{
extern void *k_stdout; /* console for kernel messages */
extern prog_info_t pi;
/* set initial stdout */
kdevice_set_initial_stdout ();
/* initialize memory subsystem (needed for boot) */
k_memory_init ();
/*! start with regular initialization */
/* interrupts */
arch_init_interrupts ();
/* detect memory faults (qemu do not detect segment violations!) */
arch_register_interrupt_handler ( INT_MEM_FAULT, k_memory_fault, NULL );
arch_register_interrupt_handler ( INT_UNDEF_FAULT, k_memory_fault, NULL );
/* timer subsystem */
k_time_init ();
/* devices */
k_devices_init ();
/* switch to default 'stdout' for kernel */
k_stdout = k_device_open ( K_STDOUT, O_WRONLY );
kprintf ( "%s\n", system_info );
pi.heap = kmalloc ( PROG_HEAP_SIZE );
pi.heap_size = PROG_HEAP_SIZE;
/* enable interrupts */
enable_interrupts ();
/* starting program routine */
prog_init ( NULL );
#if ( TURN_OFF == 0 )
kprintf ( "\nSystem halted!\n" );
halt ();
#else
/* power off (if supported, or just stop if not) */
kprintf ( "Powering off\n\n" );
power_off ();
#endif
}
