Rename ram_pages to init_ram_pages.

[pintos-anon] / src / threads / init.c

diff --git a/src/threads/init.c b/src/threads/init.c
index 9815a2030749dcece5d2c4e378a5b79120d1d9b7..d2d3e087de286cb8f5b48fd960d1568ae2d1cab4 100644 (file)
--- a/src/threads/init.c
+++ b/src/threads/init.c
@@ -11,6 +11,7 @@
 #include "devices/kbd.h"
 #include "devices/input.h"
 #include "devices/serial.h"
 #include "devices/kbd.h"
 #include "devices/input.h"
 #include "devices/serial.h"

+#include "devices/shutdown.h"

 #include "devices/timer.h"
 #include "devices/vga.h"
 #include "devices/rtc.h"
 #include "devices/timer.h"
 #include "devices/vga.h"
 #include "devices/rtc.h"


@@ -37,21 +38,18 @@
 #endif
 
 /* Amount of physical memory, in 4 kB pages. */
 #endif
 
 /* Amount of physical memory, in 4 kB pages. */

-size_t ram_pages;
+size_t init_ram_pages;

 
 /* Page directory with kernel mappings only. */
 
 /* Page directory with kernel mappings only. */

-uint32_t *base_page_dir;
+uint32_t *init_page_dir;

 
 #ifdef FILESYS
 /* -f: Format the file system? */
 static bool format_filesys;
 #endif
 
 
 #ifdef FILESYS
 /* -f: Format the file system? */
 static bool format_filesys;
 #endif
 

-/* -q: Power off after kernel tasks complete? */
-bool power_off_when_done;
-
-/* -r: Reboot after kernel tasks complete? */
-static bool reboot_when_done;
+/* -ul: Maximum number of pages to put into palloc's user pool. */
+static size_t user_page_limit = SIZE_MAX;

 
 static void ram_init (void);
 static void paging_init (void);
 
 static void ram_init (void);
 static void paging_init (void);


@@ -61,9 +59,6 @@ static char **parse_options (char **argv);
 static void run_actions (char **argv);
 static void usage (void);
 
 static void run_actions (char **argv);
 static void usage (void);
 

-static void print_stats (void);
-
-

 int main (void) NO_RETURN;
 
 /* Pintos main program. */
 int main (void) NO_RETURN;
 
 /* Pintos main program. */


@@ -85,10 +80,11 @@ main (void)
   console_init ();  
 
   /* Greet user. */
   console_init ();  
 
   /* Greet user. */

-  printf ("Pintos booting with %'zu kB RAM...\n", ram_pages * PGSIZE / 1024);
+  printf ("Pintos booting with %'zu kB RAM...\n",
+          init_ram_pages * PGSIZE / 1024);

 
   /* Initialize memory system. */
 
   /* Initialize memory system. */

-  palloc_init ();
+  palloc_init (user_page_limit);

   malloc_init ();
   paging_init ();
 
   malloc_init ();
   paging_init ();
 


@@ -125,11 +121,7 @@ main (void)
   run_actions (argv);
 
   /* Finish up. */
   run_actions (argv);
 
   /* Finish up. */

-  if (reboot_when_done)
-    reboot ();
-
-  if (power_off_when_done)
-    power_off ();
+  shutdown ();

   thread_exit ();
 }
 \f
   thread_exit ();
 }
 \f


@@ -147,12 +139,12 @@ ram_init (void)
   memset (&_start_bss, 0, &_end_bss - &_start_bss);
 
   /* Get RAM size from loader.  See loader.S. */
   memset (&_start_bss, 0, &_end_bss - &_start_bss);
 
   /* Get RAM size from loader.  See loader.S. */

-  ram_pages = *(uint32_t *) ptov (LOADER_RAM_PGS);
+  init_ram_pages = *(uint32_t *) ptov (LOADER_RAM_PGS);

 }
 
 /* Populates the base page directory and page table with the
    kernel virtual mapping, and then sets up the CPU to use the
 }
 
 /* Populates the base page directory and page table with the
    kernel virtual mapping, and then sets up the CPU to use the

-   new page directory.  Points base_page_dir to the page
+   new page directory.  Points init_page_dir to the page

    directory it creates.
 
    At the time this function is called, the active page table
    directory it creates.
 
    At the time this function is called, the active page table


@@ -166,9 +158,9 @@ paging_init (void)
   size_t page;
   extern char _start, _end_kernel_text;
 
   size_t page;
   extern char _start, _end_kernel_text;
 

-  pd = base_page_dir = palloc_get_page (PAL_ASSERT | PAL_ZERO);
+  pd = init_page_dir = palloc_get_page (PAL_ASSERT | PAL_ZERO);

   pt = NULL;
   pt = NULL;

-  for (page = 0; page < ram_pages; page++) 
+  for (page = 0; page < init_ram_pages; page++)

     {
       uintptr_t paddr = page * PGSIZE;
       char *vaddr = ptov (paddr);
     {
       uintptr_t paddr = page * PGSIZE;
       char *vaddr = ptov (paddr);


@@ -190,7 +182,7 @@ paging_init (void)
      new page tables immediately.  See [IA32-v2a] "MOV--Move
      to/from Control Registers" and [IA32-v3a] 3.7.5 "Base Address
      of the Page Directory". */
      new page tables immediately.  See [IA32-v2a] "MOV--Move
      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)));
+  asm volatile ("movl %0, %%cr3" : : "r" (vtop (init_page_dir)));

 }
 
 /* Breaks the kernel command line into words and returns them as
 }
 
 /* Breaks the kernel command line into words and returns them as


@@ -242,9 +234,9 @@ parse_options (char **argv)
       if (!strcmp (name, "-h"))
         usage ();
       else if (!strcmp (name, "-q"))
       if (!strcmp (name, "-h"))
         usage ();
       else if (!strcmp (name, "-q"))

-        power_off_when_done = true;
+        shutdown_configure (SHUTDOWN_POWER_OFF);

       else if (!strcmp (name, "-r"))
       else if (!strcmp (name, "-r"))

-        reboot_when_done = true;
+        shutdown_configure (SHUTDOWN_REBOOT);

 #ifdef FILESYS
       else if (!strcmp (name, "-f"))
         format_filesys = true;
 #ifdef FILESYS
       else if (!strcmp (name, "-f"))
         format_filesys = true;


@@ -373,77 +365,5 @@ usage (void)
           "  -ul=COUNT          Limit user memory to COUNT pages.\n"
 #endif
           );
           "  -ul=COUNT          Limit user memory to COUNT pages.\n"
 #endif
           );

-  power_off ();
-}
-
-
-/* Reboots the machine we're running on. */
-void
-reboot (void)
-{
-    int i;
-
-    printf ("Rebooting...\n");
-
-    /* based on reboot.c code by Osamu Tomita <tomita@cinet.co.jp>
-     * See http://www.win.tue.nl/~aeb/linux/kbd/scancodes-11.html */
-    for (i = 0; i < 100; i++) {
-        int j;
-
-        /* Poll keyboard controller's status byte until 
-         * 'input buffer empty' is reported, so it's ok to write */
-        for (j = 0; j < 0x10000; j++) 
-          {
-            if ((inb (0x64) & 0x02) == 0)   
-              break;
-            timer_usleep (2);
-          }
-
-        timer_usleep (50);
-
-        /* Pulse bit 0 of the output port P2 of the keyboard controller. 
-         * This will reset the CPU. */
-        outb (0x64, 0xfe);
-        timer_usleep (50);
-    }
-}
-
-/* Powers down the machine we're running on,
-   as long as we're running on Bochs or QEMU. */
-void
-power_off (void) 
-{
-  const char s[] = "Shutdown";
-  const char *p;
-
-#ifdef FILESYS
-  filesys_done ();
-#endif
-
-  print_stats ();
-
-  printf ("Powering off...\n");
-  serial_flush ();
-
-  for (p = s; *p != '\0'; p++)
-    outb (0x8900, *p);
-  asm volatile ("cli; hlt" : : : "memory");
-  printf ("still running...\n");
-  for (;;);
-}
-
-/* Print statistics about Pintos execution. */
-static void
-print_stats (void) 
-{
-  timer_print_stats ();
-  thread_print_stats ();
-#ifdef FILESYS
-  disk_print_stats ();
-#endif
-  console_print_stats ();
-  kbd_print_stats ();
-#ifdef USERPROG
-  exception_print_stats ();
-#endif
+  shutdown_power_off ();

 }
 }