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 "rtc.h"

9 #include "timer.h"

10 #include "mem.h"

11 #include "vm.h"

12

13 static void do_nothing();

14

15 /* special keys */

16 enum {

17 LALT, RALT,

18 LCTRL, RCTRL,

19 LSHIFT, RSHIFT,

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

21 CAPSLK, NUMLK, SCRLK, SYSRQ,

22 ESC = 27,

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

24 NUM_DOT, NUM_ENTER, NUM_PLUS, NUM_MINUS, NUM_MUL, NUM_DIV,

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

26 BACKSP = 127

27 };

28

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

30 static int keycodes[] = {

31 0, ESC, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', '\b', /* 0 - e */

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

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

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

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

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

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

38 0, 0, 0, 0, 0, 0, 0, /* 59 - 5f */

39 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 60 - 6f */

40 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* 70 - 7f */

41 };

42

43 void kmain(struct mboot_info *mbinf)

44 {

45 clear_scr();

46

47 /* pointless verbal diarrhea */

48 if(mbinf->flags & MB_LDRNAME) {

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

50 }

51 if(mbinf->flags & MB_CMDLINE) {

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

53 }

54

55 puts("kernel starting up");

56

57 init_segm();

58 init_intr();

59

60

61 /* initialize the physical memory manager */

62 init_mem(mbinf);

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

64 init_vm();

65

66 /* initialize the timer and RTC */

67 init_timer();

68 init_rtc();

69

70 /* initialization complete, enable interrupts */

71 enable_intr();

72

73

74 for(;;) {

75 char c, keypress;

76 do {

77 inb(keypress, 0x64);

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

79 inb(c, 0x60);

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

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

82 }

83 }

84 }