Add: reboot utility

src/kernel/shell.c

@@ -106,6 +106,7 @@ void shell_install()
   register_command("cowsay", program_cowsay);
   register_command("time", program_time);
   register_command("read", program_read);
+  register_command("reboot", program_reboot);
 
   for (;;)
   {

src/programs/misc.c

@@ -9,6 +9,7 @@
 #include "../drivers/framebuffer.h"
 #include "../drivers/ata.h"
 #include "../drivers/rtc.h"
+#include "../kernel/io.h"
 
 // Print a rainbow colorful text for testing
 
@@ -51,7 +52,7 @@ void program_uptime()
 
 void program_help()
 {
-	printf("help\tpanic\twords\tprimes\trainbow\tclear\nmath\tbf\t   uptime   echo\t  sysinfo\tconway\nrot13   morse\tcowsay   time\t  read\n");
+	printf("help\tpanic\twords\tprimes\trainbow\tclear\nmath\tbf\t   uptime   echo\t  sysinfo\tconway\nrot13   morse\tcowsay   time\t  read\t   reboot\n");
 }
 
 // Panic
@@ -109,3 +110,15 @@ void program_read(int argc, char* argv[])
 		puts("Invalid argument number\n");
 	}
 }
+
+// Reboots the machine (might just shutdown)
+
+void program_reboot()
+{
+	puts("Rebooting...\n");
+	
+	while(inb(0x64) & 0x02);
+	outb(0x64, 0xFE);
+
+	while (1) asm volatile("hlt");
+}

src/programs/programs.h

@@ -31,5 +31,6 @@ void program_help();
 void program_echo();
 void program_time();
 void program_read();
+void program_reboot();
 
 #endif