#include <stdlib.h>
#include <string.h>
#include "devices/kbd.h"
+#include "devices/input.h"
#include "devices/serial.h"
#include "devices/timer.h"
#include "devices/vga.h"
#include "threads/io.h"
#include "threads/loader.h"
#include "threads/malloc.h"
-#include "threads/mmu.h"
#include "threads/palloc.h"
+#include "threads/pte.h"
#include "threads/thread.h"
#ifdef USERPROG
#include "userprog/process.h"
/* Page directory with kernel mappings only. */
uint32_t *base_page_dir;
-/* -mlfqs:
- If false (default), use round-robin scheduler.
- If true, use multi-level feedback queue scheduler. */
-bool enable_mlfqs;
-
-#ifdef VM
-/* -rndpg:
- If false (default), use LRU page replacement policy.
- If true, use random page replacement policy. */
-bool enable_random_paging;
-#endif
-
#ifdef FILESYS
-/* -f: Format the filesystem? */
+/* -f: Format the file system? */
static bool format_filesys;
#endif
argv = read_command_line ();
argv = parse_options (argv);
+ /* Set random seed if parse_options() didn't. */
+ random_init (0);
+
/* Initialize memory system. */
palloc_init ();
malloc_init ();
gdt_init ();
#endif
- /* Set random seed if parse_options() didn't. */
- random_init (0);
-
/* Initialize interrupt handlers. */
intr_init ();
timer_init ();
kbd_init ();
+ input_init ();
#ifdef USERPROG
exception_init ();
syscall_init ();
timer_calibrate ();
#ifdef FILESYS
- /* Initialize filesystem. */
+ /* Initialize file system. */
disk_init ();
filesys_init (format_filesys);
#endif
{
uint32_t *pd, *pt;
size_t page;
+ extern char _start, _end_kernel_text;
pd = base_page_dir = palloc_get_page (PAL_ASSERT | PAL_ZERO);
pt = NULL;
for (page = 0; page < ram_pages; page++)
{
uintptr_t paddr = page * PGSIZE;
- void *vaddr = ptov (paddr);
+ char *vaddr = ptov (paddr);
size_t pde_idx = pd_no (vaddr);
size_t pte_idx = pt_no (vaddr);
+ bool in_kernel_text = &_start <= vaddr && vaddr < &_end_kernel_text;
if (pd[pde_idx] == 0)
{
pd[pde_idx] = pde_create (pt);
}
- pt[pte_idx] = pte_create_kernel (vaddr, true);
+ pt[pte_idx] = pte_create_kernel (vaddr, !in_kernel_text);
}
/* Store the physical address of the page directory into CR3
aka PDBR (page directory base register). This activates our
new page tables immediately. See [IA32-v2a] "MOV--Move
- to/from Control Registers" and [IA32-v3] 3.7.5. */
+ to/from Control Registers" and [IA32-v3a] 3.7.5 "Base Address
+ of the Page Directory". */
asm volatile ("movl %0, %%cr3" :: "r" (vtop (base_page_dir)));
}
/* Print kernel command line. */
printf ("Kernel command line:");
for (i = 0; i < argc; i++)
- printf (" %s", argv[i]);
+ if (strchr (argv[i], ' ') == NULL)
+ printf (" %s", argv[i]);
+ else
+ printf (" '%s'", argv[i]);
printf ("\n");
return argv;
else if (!strcmp (name, "-rs"))
random_init (atoi (value));
else if (!strcmp (name, "-mlfqs"))
- enable_mlfqs = true;
+ thread_mlfqs = true;
#ifdef USERPROG
else if (!strcmp (name, "-ul"))
user_page_limit = atoi (value);
-#endif
-#ifdef VM
- else if (!strcmp (name, "-rndpg"))
- enable_random_paging = true;
#endif
else
PANIC ("unknown option `%s' (use -h for help)", name);
-
}
return argv;
" -mlfqs Use multi-level feedback queue scheduler.\n"
#ifdef USERPROG
" -ul=COUNT Limit user memory to COUNT pages.\n"
-#endif
-#ifdef VM
- " -rndpg Use random page replacement policy.\n"
#endif
);
power_off ();
/* Powers down the machine we're running on,
- as long as we're running on Bochs or qemu. */
+ as long as we're running on Bochs or QEMU. */
void
power_off (void)
{
for (p = s; *p != '\0'; p++)
outb (0x8900, *p);
+ asm ("cli; hlt");
+ printf ("still running...\n");
for (;;);
}