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#include "errno.h"
#include "globals.h"
#include "types.h"
#include <api/exec.h>
#include <drivers/screen.h>
#include <drivers/tty/tty.h>
#include <drivers/tty/vterminal.h>
#include <main/io.h>
#include <mm/mm.h>
#include <mm/slab.h>
#include <test/kshell/kshell.h>
#include <util/time.h>
#include <vm/anon.h>
#include <vm/shadow.h>
#include "util/debug.h"
#include "util/gdb.h"
#include "util/printf.h"
#include "util/string.h"
#include "main/acpi.h"
#include "main/apic.h"
#include "main/inits.h"
#include "drivers/dev.h"
#include "drivers/pcie.h"
#include "api/syscall.h"
#include "fs/fcntl.h"
#include "fs/vfs.h"
#include "fs/vfs_syscall.h"
#include "fs/vnode.h"
#include "test/driverstest.h"
#include "test/vmtest.h"
GDB_DEFINE_HOOK(boot)
GDB_DEFINE_HOOK(initialized)
GDB_DEFINE_HOOK(shutdown)
static void initproc_start();
typedef void (*init_func_t)();
static init_func_t init_funcs[] = {
dbg_init,
intr_init,
page_init,
pt_init,
acpi_init,
apic_init,
core_init,
slab_init,
pframe_init,
pci_init,
vga_init,
#ifdef __VM__
anon_init,
shadow_init,
#endif
vmmap_init,
proc_init,
kthread_init,
#ifdef __DRIVERS__
chardev_init,
blockdev_init,
#endif
kshell_init,
file_init,
pipe_init,
syscall_init,
elf64_init,
proc_idleproc_init,
};
/*
* Call the init functions (in order!), then run the init process
* (initproc_start)
*/
void kmain()
{
GDB_CALL_HOOK(boot);
for (size_t i = 0; i < sizeof(init_funcs) / sizeof(init_funcs[0]); i++)
init_funcs[i]();
dbg(DBG_PROC, "Starting init process\n");
initproc_start();
panic("\nReturned to kmain()\n");
}
/*
* Make:
* 1) /dev/null
* 2) /dev/zero
* 3) /dev/ttyX for 0 <= X < __NTERMS__
* 4) /dev/hdaX for 0 <= X < __NDISKS__
*/
static void make_devices()
{
long status = do_mkdir("/dev");
KASSERT(!status || status == -EEXIST);
status = do_mknod("/dev/null", S_IFCHR, MEM_NULL_DEVID);
KASSERT(!status || status == -EEXIST);
status = do_mknod("/dev/zero", S_IFCHR, MEM_ZERO_DEVID);
KASSERT(!status || status == -EEXIST);
char path[32] = {0};
for (long i = 0; i < __NTERMS__; i++)
{
snprintf(path, sizeof(path), "/dev/tty%ld", i);
dbg(DBG_INIT, "Creating tty mknod with path %s\n", path);
status = do_mknod(path, S_IFCHR, MKDEVID(TTY_MAJOR, i));
KASSERT(!status || status == -EEXIST);
}
for (long i = 0; i < __NDISKS__; i++)
{
snprintf(path, sizeof(path), "/dev/hda%ld", i);
dbg(DBG_INIT, "Creating disk mknod with path %s\n", path);
status = do_mknod(path, S_IFBLK, MKDEVID(DISK_MAJOR, i));
KASSERT(!status || status == -EEXIST);
}
}
/*
* The function executed by the init process. Finish up all initialization now
* that we have a proper thread context.
*
* This function will require edits over the course of the project:
*
* - Before finishing drivers, this is where your tests lie. You can, however,
* have them in a separate test function which can even be in a separate file
* (see handout).
*
* - After finishing drivers but before starting VM, you should start __NTERMS__
* processes running kshells (see kernel/test/kshell/kshell.c, specifically
* kshell_proc_run). Testing here amounts to defining a new kshell command
* that runs your tests.
*
* - During and after VM, you should use kernel_execve when starting, you
* will probably want to kernel_execve the program you wish to test directly.
* Eventually, you will want to kernel_execve "/sbin/init" and run your
* tests from the userland shell (by typing in test commands)
*
* Note: The init process should wait on all of its children to finish before
* returning from this function (at which point the system will shut down).
*/
static void *initproc_run(long arg1, void *arg2)
{
#ifdef __VFS__
dbg(DBG_INIT, "Initializing VFS...\n");
vfs_init();
make_devices();
#endif
// proctest_main(0, NULL);
#ifdef __VM__
// vmtest_main(0, NULL);
char *const argv[] = {NULL};
char *const envp[] = {NULL};
kernel_execve("/sbin/init", argv, envp);
#endif
#ifdef __DRIVERS__
// driverstest_main(0, NULL);
char name[32] = {0};
for (long i = 0; i < __NTERMS__; i++)
{
snprintf(name, sizeof(name), "kshell%ld", i);
proc_t *proc = proc_create("ksh");
kthread_t *thread = kthread_create(proc, kshell_proc_run, i, NULL);
sched_make_runnable(thread);
}
#endif
// see if there are any children to wait for
int status = 0;
while (do_waitpid(-1, &status, 0) != -ECHILD)
{
// do nothing
}
return NULL;
}
/*
* Sets up the initial process and prepares it to run.
*
* Hints:
* Use proc_create() to create the initial process.
* Use kthread_create() to create the initial process's only thread.
* Make sure the thread is set up to start running initproc_run() (values for
* arg1 and arg2 do not matter, they can be 0 and NULL).
* Use sched_make_runnable() to make the thread runnable.
* Use context_make_active() with the context of the current core (curcore)
* to start the scheduler.
*/
void initproc_start()
{
proc_t *init_proc = proc_create("init");
KASSERT(init_proc != NULL);
kthread_t *init_thread = kthread_create(init_proc, initproc_run, 0, NULL);
KASSERT(init_thread != NULL);
sched_make_runnable(init_thread);
context_make_active(&curcore.kc_ctx); // start the scheduler
}
void initproc_finish()
{
#ifdef __VFS__
if (vfs_shutdown())
panic("vfs shutdown FAILED!!\n");
#endif
#ifdef __DRIVERS__
screen_print_shutdown();
#endif
/* sleep forever */
while (1)
{
__asm__ volatile("cli; hlt;");
}
panic("should not get here");
}
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