1 #include <stdio.h>

2 #include "mboot.h"

3 #include "vid.h"

4 #include "term.h"

5 #include "asmops.h"

6 #include "segm.h"

7 #include "intr.h"

8 #include "timer.h"

9 #include "mem.h"

10 #include "vm.h"

11

12 /* special keys */

13 enum {

14 LALT, RALT,

15 LCTRL, RCTRL,

16 LSHIFT, RSHIFT,

17 F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12,

18 CAPSLK, NUMLK, SCRLK, SYSRQ,

19 ESC = 27,

20 INSERT, DEL, HOME, END, PGUP, PGDN, LEFT, RIGHT, UP, DOWN,

21 NUM_DOT, NUM_ENTER, NUM_PLUS, NUM_MINUS, NUM_MUL, NUM_DIV,

22 NUM_0, NUM_1, NUM_2, NUM_3, NUM_4, NUM_5, NUM_6, NUM_7, NUM_8, NUM_9,

23 BACKSP = 127

24 };

25

26 /* table with rough translations from set 1 scancodes to ASCII-ish */

27 static int keycodes[] = {

28 0, ESC, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', '\b', /* 0 - e */

29 '\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n', /* f - 1c */

30 LCTRL, 'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'', '`', /* 1d - 29 */

31 LSHIFT, '\\', 'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/', RSHIFT, /* 2a - 36 */

32 NUM_MUL, LALT, ' ', CAPSLK, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, /* 37 - 44 */

33 NUMLK, SCRLK, NUM_7, NUM_8, NUM_9, NUM_MINUS, NUM_4, NUM_5, NUM_6, NUM_PLUS, /* 45 - 4e */

34 NUM_1, NUM_2, NUM_3, NUM_0, NUM_DOT, SYSRQ, 0, 0, F11, F12, /* 4d - 58 */

35 0, 0, 0, 0, 0, 0, 0, /* 59 - 5f */

36 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 60 - 6f */

37 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* 70 - 7f */

38 };

39

40 void kmain(struct mboot_info *mbinf)

41 {

42 clear_scr();

43

44 /* pointless verbal diarrhea */

45 if(mbinf->flags & MB_LDRNAME) {

46 printf("loaded by: %s\n", mbinf->boot_loader_name);

47 }

48 if(mbinf->flags & MB_CMDLINE) {

49 printf("kernel command line: %s\n", mbinf->cmdline);

50 }

51

52 puts("kernel starting up");

53

54 init_segm();

55 init_intr();

56

57 init_timer();

58

59 /* initialize the physical memory manager */

60 init_mem(mbinf);

61 /* initialize paging and the virtual memory manager */

62 init_vm();

63

64 /* initialization complete, enable interrupts */

65 enable_intr();

66

67 for(;;) {

68 char c, keypress;

69 do {

70 inb(keypress, 0x64);

71 } while(!(keypress & 1));

72 inb(c, 0x60);

73 if(!(c & 0x80)) {

74 putchar(keycodes[(int)c]);

75 }

76 }

77 }