void init_startup_thread(uint32_t arg)
{
/* Threads have arguments for functions they run, we don't
need any. Silence the compiler warning by using the argument. */
arg = arg;
kprintf("Mounting filesystems\n");
vfs_mount_all();
kprintf("Initializing networking\n");
network_init();
if(bootargs_get("initprog") == NULL) {
kprintf("No initial program (initprog), dropping to fallback\n");
init_startup_fallback();
}
kprintf("Starting initial program '%s'\n", bootargs_get("initprog"));
/* `process_start` no longer takes an executable as its argument, so we need
to start initprog with `process_spawn`. */
process_id_t pid = process_spawn(bootargs_get("initprog"));
if (pid < 0) {
KERNEL_PANIC("Couldn't fit initial program in process table.\n");
}
process_join(pid);
/* The current process_start() should never return. */
KERNEL_PANIC("Run out of initprog.\n");
}
void init_startup_thread(uint32_t arg)
{
/* Threads have arguments for functions they run, we don't
need any. Silence the compiler warning by using the argument. */
arg = arg;
process_id_t pid;
kprintf("Mounting filesystems\n");
vfs_mount_all();
kprintf("Initializing networking\n");
network_init();
if(bootargs_get("initprog") == NULL) {
kprintf("No initial program (initprog), dropping to fallback\n");
init_startup_fallback();
}
kprintf("Starting initial program '%s'\n", bootargs_get("initprog"));
pid = process_spawn(bootargs_get("initprog"));
if (pid < 0)
KERNEL_PANIC("Couldn't fit initial program in process table.\n");
process_join(pid);
halt_kernel();
}
void init_startup_thread(uint32_t arg)
{
/* Threads have arguments for functions they run, we don't
need any. Silence the compiler warning by using the argument. */
arg = arg;
kprintf("Mounting filesystems\n");
vfs_mount_all();
if(bootargs_get("initprog") == NULL) {
kprintf("No initial program (initprog), dropping to fallback\n");
init_startup_fallback();
}
kprintf("Starting initial program '%s'\n", bootargs_get("initprog"));
// Run Process-Init for at lave process table
process_init();
process_spawn(bootargs_get("initprog"), NULL);
}
void init_startup_thread(uint32_t arg)
{
/* Threads have arguments for functions they run, we don't
need any. Silence the compiler warning by using the argument. */
arg = arg;
kprintf("Mounting filesystems\n");
vfs_mount_all();
kprintf("Initializing networking\n");
network_init();
if(bootargs_get("initprog") == NULL) {
kprintf("No initial program (initprog), dropping to fallback\n");
init_startup_fallback();
}
kprintf("Starting initial program '%s'\n", bootargs_get("initprog"));
process_run(bootargs_get("initprog"));
/* The current process_run() should never return. */
KERNEL_PANIC("Run out of initprog.\n");
}
/**
* Fallback function for system startup. This function is executed
* if the initial startup program (shell or other userland process given
* with initprog boot argument) is not started or specified.
*
* This is a good place for some kernel test code!
*
*/
void init_startup_fallback(void)
{
DEBUG("debuginit", "In init_startup_fallback\n");
/* Run console test if "testconsole" was given as boot argument. */
if (bootargs_get("testconsole") != NULL)
{
device_t *dev;
gcd_t *gcd;
char buffer[64];
char buffer2[64];
int len;
DEBUG("debuginit", "In console test\n");
/* Find system console (first tty) */
dev = device_get(YAMS_TYPECODE_TTY, 0);
KERNEL_ASSERT(dev != NULL);
gcd = (gcd_t *)dev->generic_device;
KERNEL_ASSERT(gcd != NULL);
len = snprintf(buffer, 63, "Hello user! Press any key.\n");
gcd->write(gcd, buffer, len);
len = gcd->read(gcd, buffer2, 63);
KERNEL_ASSERT(len >= 0);
buffer2[len] = '\0';
len = snprintf(buffer, 63, "You said: '%s'\n", buffer2);
gcd->write(gcd, buffer, len);
DEBUG("debuginit", "Console test done, %d bytes written\n", len);
}
/* Nothing else to do, so we shut the system down. */
kprintf("Startup fallback code ends.\n");
halt_kernel();
}
void init(void)
{
TID_t startup_thread;
int numcpus;
/* Initialize polling TTY driver for kprintf() usage. */
polltty_init();
kwrite("BUENOS is a University Educational Nutshell Operating System\n");
kwrite("==========================================================\n");
kwrite("\n");
kwrite("Copyright (C) 2003-2006 Juha Aatrokoski, Timo Lilja,\n");
kwrite(" Leena Salmela, Teemu Takanen, Aleksi Virtanen\n");
kwrite("See the file COPYING for licensing details.\n");
kwrite("\n");
kwrite("Initializing memory allocation system\n");
kmalloc_init();
kwrite("Reading boot arguments\n");
bootargs_init();
/* Seed the random number generator. */
if (bootargs_get("randomseed") == NULL) {
_set_rand_seed(0);
} else {
int seed = atoi(bootargs_get("randomseed"));
kprintf("Seeding pseudorandom number generator with %i\n", seed);
_set_rand_seed(seed);
}
numcpus = cpustatus_count();
kprintf("Detected %i CPUs\n", numcpus);
KERNEL_ASSERT(numcpus <= CONFIG_MAX_CPUS);
kwrite("Initializing interrupt handling\n");
interrupt_init(numcpus);
kwrite("Initializing threading system\n");
thread_table_init();
kwrite("Initializing user process system\n");
process_init();
kwrite("Initializing sleep queue\n");
sleepq_init();
kwrite("Initializing semaphores\n");
semaphore_init();
kwrite("Initializing device drivers\n");
device_init();
kprintf("Initializing virtual filesystem\n");
vfs_init();
kwrite("Initializing scheduler\n");
scheduler_init();
kwrite("Initializing virtual memory\n");
vm_init();
kprintf("Creating initialization thread\n");
startup_thread = thread_create(&init_startup_thread, 0);
thread_run(startup_thread);
kprintf("Starting threading system and SMP\n");
/* Let other CPUs run */
kernel_bootstrap_finished = 1;
_interrupt_clear_bootstrap();
_interrupt_enable();
/* Enter context switch, scheduler will be run automatically,
since thread_switch() behaviour is identical to timer tick
(thread timeslice is over). */
thread_switch();
/* We should never get here */
KERNEL_PANIC("Threading system startup failed.");
}
void init(void)
{
TID_t startup_thread;
int numcpus;
/* Initialise Static Allocation */
stalloc_init();
/* Initialize polling TTY driver for kprintf() usage. */
polltty_init();
kwrite("Kudos is an educational operating system by the University of Copenhagen\n");
kwrite("========================================================================\n");
kwrite("Based on the Buenos operating system skeleton\n");
kwrite("\n");
kprintf("Copyright (C) 2003-2016 Juha Aatrokoski, Timo Lilja,\n");
kprintf(" Leena Salmela, Teemu Takanen, Aleksi Virtanen, Philip Meulengracht,\n");
kprintf(" Troels Henriksen, Annie Jane Pinder, Niels Gustav Westphal Serup,\n");
kprintf(" Nicklas Warming Jacobsen, Oleksandr Shturmov.\n");
kwrite("See the file COPYING for licensing details.\n");
kwrite("\n");
kwrite("Reading boot arguments\n");
bootargs_init((void*)BOOT_ARGUMENT_AREA);
/* Seed the random number generator. */
if (bootargs_get("randomseed") == NULL) {
_set_rand_seed(0);
} else {
int seed = atoi(bootargs_get("randomseed"));
kprintf("Seeding pseudorandom number generator with %i\n", seed);
_set_rand_seed(seed);
}
numcpus = cpustatus_count();
kprintf("Detected %i CPUs\n", numcpus);
KERNEL_ASSERT(numcpus <= CONFIG_MAX_CPUS);
kwrite("Initializing interrupt handling\n");
interrupt_init(numcpus);
kwrite("Initializing threading system\n");
thread_table_init();
kwrite("Initializing sleep queue\n");
sleepq_init();
kwrite("Initializing semaphores\n");
semaphore_init();
kwrite("Initializing device drivers\n");
device_init();
kprintf("Initializing virtual filesystem\n");
vfs_init();
kwrite("Initializing scheduler\n");
scheduler_init();
kwrite("Initializing virtual memory\n");
vm_init();
kprintf("Creating initialization thread\n");
startup_thread = thread_create(&init_startup_thread, 0);
thread_run(startup_thread);
kprintf("Starting threading system and SMP\n");
/* Let other CPUs run */
kernel_bootstrap_finished = 1;
_interrupt_clear_bootstrap();
_interrupt_enable();
/* Enter context switch, scheduler will be run automatically,
since thread_switch() behaviour is identical to timer tick
(thread timeslice is over). */
thread_switch();
/* We should never get here */
KERNEL_PANIC("Threading system startup failed.");
}
int init(uint64_t magic, uint8_t *multiboot)
{
/* Setup Static Allocation System */
multiboot_info_t *mb_info = (multiboot_info_t*)multiboot;
TID_t startup_thread;
stalloc_init();
/* Setup video printing */
polltty_init();
kwrite("KUDOS - a skeleton OS for exploring OS concepts\n");
kwrite("===============================================\n");
kwrite("\n");
kwrite("KUDOS is heavily based on BUENOS.\n");
kwrite("\n");
kwrite("Copyright (C) 2015-2016 Troels Henriksen, Annie Jane Pinder,\n");
kwrite(" Niels Gustav Westphal Serup, Oleksandr Shturmov,\n");
kwrite(" Nicklas Warming Jacobsen.\n");
kwrite("\n");
kwrite("Copyright (C) 2014 Philip Meulengracht.\n");
kwrite("\n");
kwrite("Copyright (C) 2003-2012 Juha Aatrokoski, Timo Lilja,\n");
kwrite(" Leena Salmela, Teemu Takanen, Aleksi Virtanen.\n");
kwrite("\n");
kwrite("See the file COPYING for licensing details.\n");
kwrite("\n");
/* Setup GDT/IDT/Exceptions */
kprintf("Initializing interrupt handling\n");
interrupt_init(1);
/* Read boot args */
kprintf("Reading boot arguments\n");
bootargs_init((void*)(uint64_t)mb_info->cmdline);
/* Setup Memory */
kprintf("Initializing memory system\n");
physmem_init(multiboot);
vm_init();
/* Seed the random number generator. */
if (bootargs_get("randomseed") == NULL) {
_set_rand_seed(0);
} else {
int seed = atoi((char*)(uint64_t)bootargs_get("randomseed"));
kprintf("Seeding pseudorandom number generator with %i\n", seed);
_set_rand_seed(seed);
}
/* Setup Threading */
kprintf("Initializing threading table\n");
thread_table_init();
kprintf("Initializing sleep queue\n");
sleepq_init();
kprintf("Initializing semaphores\n");
semaphore_init();
/* Start scheduler */
kprintf("Initializing scheduler\n");
scheduler_init();
/* Setup Drivers */
kprintf("Initializing device drivers\n");
device_init();
/* Initialize modules */
kprintf("Initializing kernel modules\n");
modules_init();
kprintf("Initializing virtual filesystem\n");
vfs_init();
kprintf("Creating initialization thread\n");
startup_thread = thread_create(init_startup_thread, 0);
thread_run(startup_thread);
kprintf("Starting threading system and SMP\n");
/* Enter context switch, scheduler will be run automatically,
since thread_switch() behaviour is identical to timer tick
(thread timeslice is over). */
thread_switch();
return 0xDEADBEEF;
}