/**
* Initializes the container data for the root process (the one with index 0).
* The root process is the one that gets spawned first by the kernel.
*/
void container_init(unsigned int mbi_addr)
{
unsigned int real_quota;
// TODO: define your local variables here.
int max_nps;
int i;
pmem_init(mbi_addr);
real_quota = 0;
max_nps = get_nps();
/**
* TODO: compute the available quota and store it into the variable real_quota.
* It should be the number of the unallocated pages with the normal permission
* in the physical memory allocation table.
*/
for (i = 0; i < max_nps; i++)
{
if (at_is_norm(i) == 1 && at_is_allocated(i) == 0)
{
real_quota += 1;
}
}
KERN_DEBUG("\nreal quota: %d\n\n", real_quota);
CONTAINER[0].quota = real_quota;
CONTAINER[0].usage = 0;
CONTAINER[0].parent = 0;
CONTAINER[0].nchildren = 0;
CONTAINER[0].used = 1;
}
void _kmain(struct multiboot_info *mboot) {
clrscr();
// This will make sure there's about 4K of space for malloc to use until physical
// memory management is available for proper virtual memory.
kprintf("Initialising malloc()...\n");
dlmalloc_sbrk(0);
kprintf("Initialising physical memory manager...\n");
pmem_init(mboot);
kprintf("Completing virtual memory initialisation...\n");
vmem_init();
kprintf("Configuring software and hardware interrupts...\n");
interrupts_init();
kprintf("Initialising machine devices...\n");
init_devices();
kprintf("Enabling interrupts...\n");
interrupts_enable();
kprintf("Startup complete!\n");
while(1) __asm__ volatile("hlt");
}
void mm_init() {
/* Initialize physical memory: */
pmem_init();
/* Initialize kernel memory: */
kmem_init();
#if 0
/* Output statistics: */
printk("\n");
printk("Physical Memory Manager Statistics: \n");
printk("====================================\n");
printk("kernel: start: %x, end: %x\n",
KERNEL_PHYSICAL_START, KERNEL_PHYSICAL_END);
printk("Accessible RAM Size (Approximate): %dMB.\n",
((pmem_usable_pages + 0x100 - 1) & 0xFFFFFF00)>>8);
printk("\n");
printk("Kernel Space Memory:\n");
printk("=====================\n");
printk("0x%x:0x%x - Kernel image.\n",
KERNEL_VIRTUAL_START, KERNEL_VIRTUAL_END);
printk("0x%x:0x%x - Lower memory image.\n",
LOWMEM_VIRTUAL_START, LOWMEM_VIRTUAL_END);
#endif
}
/**
* Initializes the container data for the root process (the one with index 0).
* The root process is the one that gets spawned first by the kernel.
*/
void container_init(unsigned int mbi_addr)
{
unsigned int real_quota;
unsigned int nps, i, norm, used;
pmem_init(mbi_addr);
real_quota = 0;
/**
* compute the available quota and store it into the variable real_quota.
* It should be the number of the unallocated pages with the normal permission
* in the physical memory allocation table.
*/
nps = get_nps();
i = 1;
while (i < nps) {
norm = at_is_norm(i);
used = at_is_allocated(i);
if (norm == 1 && used == 0)
real_quota++;
i++;
}
KERN_DEBUG("\nreal quota: %d\n\n", real_quota);
CONTAINER[0].quota = real_quota;
CONTAINER[0].usage = 0;
CONTAINER[0].parent = 0;
CONTAINER[0].nchildren = 0;
CONTAINER[0].used = 1;
}
/* init_itron --- ITRON の初期化を行う。
*
*/
static ER
init_itron ()
{
init_interrupt ();
simple_init_console (); /* コンソールに文字を出力できるようにする */
pmem_init (); /* 物理メモリ管理機能の初期化 */
banner (); /* 立ち上げメッセージ出力 */
printf ("init_itron: start\n");
init_kalloc (); /* バイト単位のメモリ管理機能の初期化 */
init_semaphore (); /* セマフォの管理機能の初期化 */
init_msgbuf (); /* メッセージ管理機能の初期化 */
init_eventflag (); /* イベントフラグ管理機能の初期化 */
#ifdef notdef
init_mpl (); /* メモリプール管理機能の初期化 */
simple_init_console (); /* コンソールに文字を出力できるようにする */
#endif
init_task (); /* タスク管理機能の初期化 */
/* 1番目のタスクを初期化する。そしてそのタスクを以後の処
* 理で使用する。
*/
init_task1 ();
printf ("call init_timer\n");
init_timer (); /* インターバルタイマ機能の初期化 */
start_interval (); /* インターバルタイマの起動 */
init_io ();
return (E_OK);
}
static void
libpmem_init(void)
{
out_init(PMEM_LOG_PREFIX, PMEM_LOG_LEVEL_VAR, PMEM_LOG_FILE_VAR,
PMEM_MAJOR_VERSION, PMEM_MINOR_VERSION);
LOG(3, NULL);
util_init();
pmem_init();
}
/*
* libpmem_init -- load-time initialization for libpmem
*
* Called automatically by the run-time loader.
*/
ATTR_CONSTRUCTOR
void
libpmem_init(void)
{
pmem_init();
}
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
}
