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comparison cos/kernel/kernel.c @ 17:f3e3e0e9c4bc

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First attempt IDT loader 64 bits. INT13 occurs
author windel
date Sat, 19 Nov 2011 20:01:28 +0100
parents a58904747019
children 6129643f5c34
comparison
equal deleted inserted replaced
16:ddefe6d97cd7 17:f3e3e0e9c4bc
1 #include "kernel.h" 1 #include "kernel.h"
2 2
3 static int shiftstate = 0; 3 static int shiftstate = 0;
4 static volatile unsigned char charAvail = 0; 4 static volatile uint8_t charAvail = 0;
5 static volatile char kbdchar = ' '; 5 static volatile char kbdchar = ' ';
6 6
7 static char keymap[128] = { 7 static char keymap[128] = {
8 '?','?','1','2', '3', '4', '5','6', '7', '8','9', '0', '-','=', 0xe, '?', 8 '?','?','1','2', '3', '4', '5','6', '7', '8','9', '0', '-','=', 0xe, '?',
9 'q','w','e','r', 't', 'y', 'u','i', 'o', 'p','[', ']', '\n','?', 'a', 's', 9 'q','w','e','r', 't', 'y', 'u','i', 'o', 'p','[', ']', '\n','?', 'a', 's',
25 '?','?','?','?', '?', '?', '?','?', '?', '?','?', '?', '?','?', '?', '?', 25 '?','?','?','?', '?', '?', '?','?', '?', '?','?', '?', '?','?', '?', '?',
26 '?','?','?','?', '?', '?', '?','?', '?', '?','?', '?', '?','?', '?', '?', 26 '?','?','?','?', '?', '?', '?','?', '?', '?','?', '?', '?','?', '?', '?',
27 '?','?','?','?', '?', '?', '?','?', '?', '?','?', '?', '?','?', '?', '?', 27 '?','?','?','?', '?', '?', '?','?', '?', '?','?', '?', '?','?', '?', '?',
28 '?','?','?','?', '?', '?', '?','?', '?', '?','?', '?', '?','?', '?', '?' 28 '?','?','?','?', '?', '?', '?','?', '?', '?','?', '?', '?','?', '?', '?'
29 }; 29 };
30
31 // IO port helpers:
32 void outb(uint16_t port, uint8_t value)
33 {
34 asm volatile ("outb %1, %0" : : "dN" (port), "a" (value));
35 }
36
37 uint8_t inb(uint16_t port)
38 {
39 uint8_t ret;
40 asm volatile ("inb %1, %0" : "=a" (ret) : "dN" (port));
41 return ret;
42 }
43
44 uint16_t inw(uint16_t port)
45 {
46 uint16_t ret;
47 asm volatile ("inw %1, %0" : "=a" (ret) : "dN" (port));
48 return ret;
49 }
50
30 51
31 static uint64_t ticks = 0; 52 static uint64_t ticks = 0;
32 void timerDriverUpdate() 53 void timerDriverUpdate()
33 { 54 {
34 ticks++; 55 ticks++;
112 */ 133 */
113 static void* kernel_heap = (void*) 0xD0000000; 134 static void* kernel_heap = (void*) 0xD0000000;
114 /* Allocates 'size' bytes and returns the pointer if succesfull. 135 /* Allocates 'size' bytes and returns the pointer if succesfull.
115 Kernelpanic in case of failure.. 136 Kernelpanic in case of failure..
116 */ 137 */
117 void* malloc(size_t size) { 138 void* malloc(uint64_t size) {
118 printf("Malloc %d bytes\n", size); 139 printf("Malloc %d bytes\n", size);
119 return kernel_heap; 140 return kernel_heap;
120 } 141 }
121 142
122 void free(void* ptr) { 143 void free(void* ptr) {
125 146
126 void kmain() 147 void kmain()
127 { 148 {
128 init_screen(); 149 init_screen();
129 clear_screen(); 150 clear_screen();
130 printf("Welcome!\n"); 151 printf("Welcome! .. ");
131 printf("sizeof(uint32_t)=%u, sizeof(uint64_t)=%u\n", sizeof(uint32_t), sizeof(uint64_t));
132 152
133 printf("Enabling interrupts\n"); 153 printf("Enabling interrupts .. ");
134 setupIDT(); 154 setupIDT();
135 printf("Entering mainloop!\n"); 155 printf("Entering mainloop!\n");
136 156
137 while (1==1) 157 while (1==1)
138 { 158 {