/**
* This is the first real C function ever called. It performs a lot of
* hardware-specific initialization, then creates a pseudo-context to
* execute the bootstrap function in.
*/
void
kmain()
{
GDB_CALL_HOOK(boot);
dbg_init();
dbgq(DBG_CORE, "Kernel binary:\n");
dbgq(DBG_CORE, " text: 0x%p-0x%p\n", &kernel_start_text, &kernel_end_text);
dbgq(DBG_CORE, " data: 0x%p-0x%p\n", &kernel_start_data, &kernel_end_data);
dbgq(DBG_CORE, " bss: 0x%p-0x%p\n", &kernel_start_bss, &kernel_end_bss);
page_init();
pt_init();
slab_init();
pframe_init();
acpi_init();
apic_init();
pci_init();
intr_init();
gdt_init();
/* initialize slab allocators */
#ifdef __VM__
anon_init();
shadow_init();
#endif
vmmap_init();
proc_init();
kthread_init();
#ifdef __DRIVERS__
bytedev_init();
blockdev_init();
#endif
void *bstack = page_alloc();
pagedir_t *bpdir = pt_get();
KASSERT(NULL != bstack && "Ran out of memory while booting.");
context_setup(&bootstrap_context, bootstrap, 0, NULL, bstack, PAGE_SIZE, bpdir);
context_make_active(&bootstrap_context);
panic("\nReturned to kmain()!!!\n");
}
static int kthread_handler(void *arg)
{
#define k_ctx ((kthread_context_t *)arg)
#if 0
printf("Thread to be scheduled on cpu\n");
#endif
kthread_init(k_ctx);
#if 0
printf("\nThread (tid : %u, pid : %u, cpu : %d, cpu-apic-id %d) ready to run !!\n\n",
k_ctx->tid, k_ctx->pid, k_ctx->cpuid, k_ctx->cpu_apic_id);
#endif
k_ctx->kthread_app_func(NULL);
#undef k_ctx
// free(arg);
return 0;
}
/* initialize ethread */
void ethread_init(struct ethread *thread, struct eprocess *process, struct task_struct *tsk)
{
ktrace("\n");
/* attach to the containing process */
ref_object((PVOID)process);
write_lock(&process->ep_lock);
thread->threads_process = process;
write_unlock(&process->ep_lock);
/* FIXME create a thread object and hook in to the Linux task */
thread->et_task = tsk;
atomic_set(&thread->et_count, 0);
/* FIXME */
thread->et_ops = (struct ethread_operations *)ðread_ops;
INIT_LIST_HEAD(&thread->lpc_reply_chain);
INIT_LIST_HEAD(&thread->irp_list);
INIT_LIST_HEAD(&thread->active_timer_list_head);
thread->active_timer_list_lock = SPIN_LOCK_UNLOCKED;
thread->thread_lock = SPIN_LOCK_UNLOCKED;
/* FIXME: semaphore_init */
thread->cid.unique_process = process->unique_processid;
thread->win32_start_address = 0; /* context->Eax, default is 0 */
lock_process(process);
list_add_tail(&thread->thread_list_entry, &process->thread_list_head);
unlock_process(process);
add_ethread(thread->et_task, thread);
if (atomic_read(&thread->et_count) == 1) /* FIXME: add this to win32_thread.c */
ref_object(thread);
kthread_init(&thread->tcb, process);
} /* end ethread_init */
/**
* This is the first real C function ever called. It performs a lot of
* hardware-specific initialization, then creates a pseudo-context to
* execute the bootstrap function in.
*/
void
kmain()
{
GDB_CALL_HOOK(boot);
dbg_init();
dbgq(DBG_CORE, "Kernel binary:\n");
dbgq(DBG_CORE, " text: 0x%p-0x%p\n", &kernel_start_text, &kernel_end_text);
dbgq(DBG_CORE, " data: 0x%p-0x%p\n", &kernel_start_data, &kernel_end_data);
dbgq(DBG_CORE, " bss: 0x%p-0x%p\n", &kernel_start_bss, &kernel_end_bss);
page_init();
pt_init();
slab_init();
pframe_init();
acpi_init();
apic_init();
pci_init();
intr_init();
gdt_init();
/* initialize slab allocators */
#ifdef __VM__
anon_init();
shadow_init();
#endif
vmmap_init();
proc_init();
kthread_init();
#ifdef __DRIVERS__
bytedev_init();
blockdev_init();
#endif
void *bstack = page_alloc();
pagedir_t *bpdir = pt_get();
KASSERT(NULL != bstack && "Ran out of memory while booting.");
/* This little loop gives gdb a place to synch up with weenix. In the
* past the weenix command started qemu was started with -S which
* allowed gdb to connect and start before the boot loader ran, but
* since then a bug has appeared where breakpoints fail if gdb connects
* before the boot loader runs. See
*
* https://bugs.launchpad.net/qemu/+bug/526653
*
* This loop (along with an additional command in init.gdb setting
* gdb_wait to 0) sticks weenix at a known place so gdb can join a
* running weenix, set gdb_wait to zero and catch the breakpoint in
* bootstrap below. See Config.mk for how to set GDBWAIT correctly.
*
* DANGER: if GDBWAIT != 0, and gdb is not running, this loop will never
* exit and weenix will not run. Make SURE the GDBWAIT is set the way
* you expect.
*/
while (gdb_wait) ;
context_setup(&bootstrap_context, bootstrap, 0, NULL, bstack, PAGE_SIZE, bpdir);
context_make_active(&bootstrap_context);
panic("\nReturned to kmain()!!!\n");
}
extern void gtthread_app_init()
{
kthread_context_t *k_ctx, *k_ctx_main;
kthread_t k_tid;
unsigned int num_cpus, inx;
/* Initialize shared schedule information */
ksched_info_init(&ksched_shared_info);
/* kthread (virtual processor) on the first logical processor */
k_ctx_main = (kthread_context_t *)MALLOCZ_SAFE(sizeof(kthread_context_t));
k_ctx_main->cpuid = 0;
k_ctx_main->kthread_app_func = >thread_app_start;
kthread_init(k_ctx_main);
kthread_init_vtalrm_timeslice(40000ULL);
kthread_install_sighandler(SIGVTALRM, k_ctx_main->kthread_sched_timer);
kthread_install_sighandler(SIGUSR1, k_ctx_main->kthread_sched_relay);
/* Num of logical processors (cpus/cores) */
num_cpus = (int)sysconf(_SC_NPROCESSORS_CONF);
#if 0
fprintf(stderr, "Number of cores : %d\n", num_cores);
#endif
/* kthreads (virtual processors) on all other logical processors */
for(inx=1; inx<num_cpus; inx++)
{
k_ctx = (kthread_context_t *)MALLOCZ_SAFE(sizeof(kthread_context_t));
k_ctx->cpuid = inx;
k_ctx->kthread_app_func = >thread_app_start;
/* kthread_init called inside kthread_handler */
if(kthread_create(&k_tid, kthread_handler, (void *)k_ctx) < 0)
{
fprintf(stderr, "kthread creation failed (errno:%d)\n", errno );
exit(0);
}
printf( "kthread(%d) created !!\n", inx);
}
{
/* yield till other kthreads initialize */
int init_done;
yield_again:
sched_yield();
init_done = 0;
for(inx=0; inx<GT_MAX_KTHREADS; inx++)
{
/* XXX: We can avoid the last check (tmp to cur) by
* temporarily marking cur as DONE. But chuck it !! */
if(kthread_cpu_map[inx])
init_done++;
}
assert(init_done <= num_cpus);
if(init_done < num_cpus)
goto yield_again;
}
#if 0
/* app-func is called for main in gthread_app_exit */
k_ctx_main->kthread_app_func(NULL);
#endif
return;
}
void kernel_init(multiboot_info_t *mboot_info)
{
extern char __start_bss[], __stop_bss[];
memset(__start_bss, 0, __stop_bss - __start_bss);
/* mboot_info is a physical address. while some arches currently have the
* lower memory mapped, everyone should have it mapped at kernbase by now.
* also, it might be in 'free' memory, so once we start dynamically using
* memory, we may clobber it. */
multiboot_kaddr = (struct multiboot_info*)((physaddr_t)mboot_info
+ KERNBASE);
extract_multiboot_cmdline(multiboot_kaddr);
cons_init();
print_cpuinfo();
printk("Boot Command Line: '%s'\n", boot_cmdline);
exception_table_init();
cache_init(); // Determine systems's cache properties
pmem_init(multiboot_kaddr);
kmem_cache_init(); // Sets up slab allocator
kmalloc_init();
hashtable_init();
radix_init();
cache_color_alloc_init(); // Inits data structs
colored_page_alloc_init(); // Allocates colors for agnostic processes
acpiinit();
topology_init();
kthread_init(); /* might need to tweak when this happens */
vmr_init();
file_init();
page_check();
idt_init();
kernel_msg_init();
timer_init();
vfs_init();
devfs_init();
train_timing();
kb_buf_init(&cons_buf);
arch_init();
block_init();
enable_irq();
run_linker_funcs();
/* reset/init devtab after linker funcs 3 and 4. these run NIC and medium
* pre-inits, which need to happen before devether. */
devtabreset();
devtabinit();
#ifdef CONFIG_EXT2FS
mount_fs(&ext2_fs_type, "/dev/ramdisk", "/mnt", 0);
#endif /* CONFIG_EXT2FS */
#ifdef CONFIG_ETH_AUDIO
eth_audio_init();
#endif /* CONFIG_ETH_AUDIO */
get_coreboot_info(&sysinfo);
booting = 0;
#ifdef CONFIG_RUN_INIT_SCRIPT
if (run_init_script()) {
printk("Configured to run init script, but no script specified!\n");
manager();
}
#else
manager();
#endif
}