1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
#include "kernel.h" // general kernel config & includes
#include "console.h" // this will allow us to write to screen
#include "x86.h"
// TODO: cleanup . how can i compile it without the includes!??
///////
void int_def_handler();
void int_clock_handler();
void int_kb_handler();
void int_floppy_handler();
////////// KERNEL MAIN///// /////
//
// test handler
void int_test_handler()
{
X86_IRQ_BEGIN
scr_put_string("inside software interrupt handler 88");
sleep(30);
X86_IRQ_END
}
void kernel_main()
{
// clear console
scr_clear();
// hello message
scr_put_string_nl(KERNEL_HELLO_MESSAGE);
scr_put_string_nl("");
//pit config
//timer_init();
// we know that here the bootloader placed the mamory map!
mem_init(0x7c00+0x400,*((uint16_t *)(0x7c00+0x600)));
//mem_init(0x9000);
// we know that here the bootloader placed the mamory map!
vmem_init();
// init and interrupt decriptor table
int_init(0x08);
int_install();
// setup custom interrupts
// remember that we shifted all interrupts with the pic by 32
// so clock = 32 (irq 0)
// keyboard = 33 (irq 1)
// floppy = 38 (irq 6)
// etc..
// install PIT interrupt handler
int_install_ir(32, 0b10001110, 0x08,&int_clock_handler);
// install keyboard interrupt handler
int_install_ir(33, 0b10001110, 0x08,&int_kb_handler);
// install floppy interrupt handler
int_install_ir(38, 0b10001110, 0x08,&int_floppy_handler);
// install test software interrupt handler
int_install_ir(88, 0b10001110, 0x08,&int_test_handler);
// now we can enable interrupts back again
int_enable();
scr_put_string_nl("interrupts: Interrupts are up and running");
// pci
pci_init();
// vesa init
vesa_init(0x8300,0x8400);
// floppy
//floppy_init();
scr_put_string_nl("");
//init shell
shell_init();
// kernel main loop
uint8_t t=0;
uint8_t o=0;
// while(1)
// {
//}
while(1)
{
int i;
int j;
for(i=0;i<1024;i++)
for(j=0;j<768;j++)
{
if(o<2)PutPixel(i,j,0xff);
else if(o<4)PutPixel(i,j,0x5f0);
else PutPixel(i,j,0xf0000);
}
t+=125;
o++;
if(o>8)o=0;
}
}
|
