CTAOS v3

SysCore/hal/hal.c

@@ -0,0 +1,184 @@
+#include <system.h>
+#include <time.h>
+#include <hal.h>
+#include "cpu/cpu.h"
+#include "gdt/gdt.h"
+#include "idt/idt.h"
+#include "pic/pic.h"
+#include "pit/pit.h"
+#include "cmos/cmos.h"
+#include "irq/irq.h"
+#include "isrs/isrs.h"
+#include "keyboard/keyus.h"
+
+// initialize hardware devices
+void i86_hal_initialize () {
+
+	// initialize motherboard controllers and system timer
+	i86_cpu_initialize ();  // (install GDT, IDT)
+	i86_isrs_install();     // (install ISR handler)
+      i86_irq_install();      // (install IRQ handler)
+      
+      // install PIT and system clock; pit at 100 Hz
+      i86_kb_install_partone();
+      i86_cmos_read_clock((TIME*)&_internal_clock);
+	i86_pit_install (100);
+	i86_kb_install_parttwo();
+
+	// enable interrupts
+	i86_start_interrupts();
+
+}
+
+// shutdown hardware devices
+int i86_hal_shutdown () {
+
+	i86_cpu_shutdown ();
+	return 0;
+}
+
+void reboot()
+{
+    unsigned char good = 0x02;
+    while ((good & 0x02) != 0)
+        good = inportb(0x64);
+    outportb(0x64, 0xFE);
+    __asm__ __volatile__ ("hlt");
+}
+
+//! notifies hal interrupt is done
+/*inline void interruptdone (unsigned int intno) {
+
+	//! insure its a valid hardware irq
+	if (intno > 16)
+		return;
+
+	//! test if we need to send end-of-interrupt to second pic
+	if (intno >= 8)
+		i86_pic_send_command (0x20, 0xA1);
+
+	//! always send end-of-interrupt to primary pic
+	i86_pic_send_command (0x20, 0x21);
+}
+*/
+
+//! output sound to speaker
+void 	sound (unsigned frequency) {
+
+	//! sets frequency for speaker. frequency of 0 disables speaker
+	outportb (0x61, 3 | (byte)(frequency<<2) );
+}
+
+
+
+
+//! sets new interrupt vector
+/*void _cdecl setvect (int intno, void (_cdecl far &vect) ( ) ) {
+
+	//! install interrupt handler! This overwrites prev interrupt descriptor
+	i86_install_ir (intno, I86_IDT_DESC_PRESENT | I86_IDT_DESC_BIT32,
+		0x8, vect);
+}
+
+
+//! returns current interrupt vector
+void (_cdecl far * _cdecl	getvect (int intno)) ( ) {
+
+	//! get the descriptor from the idt
+	idt_descriptor* desc = i86_get_ir (intno);
+	if (!desc)
+		return 0;
+
+	//! get address of interrupt handler
+	uint32_t addr = desc->baseLo | (desc->baseHi << 16);
+
+	//! return interrupt handler
+	I86_IRQ_HANDLER irq = (I86_IRQ_HANDLER)addr;
+	return irq;
+}
+
+*/
+//! returns cpu vender
+const char* get_cpu_vender () {
+
+	return i86_cpu_get_vender();
+}
+
+
+/***************************************************************************************
+ *                     Keyboard Routines                                               *
+ ***************************************************************************************/
+char getch()
+{
+      kb_key alpha = getkey();
+      return alpha.character;
+}
+
+char scancode_to_ascii(byte scancode, byte status)
+{
+      if ((status&1) || (status&2)) return kbdus_map_shift[scancode];
+      else return kbdus_map[scancode];
+}
+
+byte get_key_status (byte scancode)
+{
+      if (scancode&0xF0) return kb_lights_status&0x0F;
+      else if (scancode&0x80) return kb_modifier_status&0x7F;
+      
+      return i86_kb_get_key(scancode);
+}
+
+/***************************************
+ *       Set repeat rate/delay         *
+ ***************************************
+ Values for inter-character delay (bits 4-0)
+ (characters per second; default is 10.9)
+     |  0 |  1 |  2 |  3 |  4 |  5 |  6 |  7 
+ ----+----+----+----+----+----+----+----+----
+  0  |30.0|26.7|24.0|21.8|20.0|18.5|17.1|16.0
+  8  |15.0|13.3|12.0|10.9|10.0|9.2 |8.6 |8.0
+  16 |7.5 |6.7 |6.0 |5.5 |5.0 |4.6 |4.3 |4.0
+  24 |3.7 |3.3 |3.0 |2.7 |2.5 |2.3 |2.1 |2.0
+  
+ Values for delay:
+ (miliseconds; default is 500)
+    0 |   1 |   2 |   3
+ -----+-----+-----+-----
+  250 | 500 | 750 | 1000
+  
+ ***************************************/ 
+void kb_set_repeat(float rate, int delay){
+      float rates[] = {30.0, 26.7, 24.0, 21.8, 20.0, 18.5, 17.1, 16.0, 15.0, 13.3, 12.0,
+                        10.9, 10.0, 9.2, 8.6, 8.0, 7.5, 6.7, 6.0, 5.5, 5.0, 4.6, 4.3, 4.0,
+                        3.7, 3.3, 3.0, 2.7, 2.5, 2.3, 2.1, 2.0} ;
+
+
+      byte r,d;
+      
+      for (r = 0; rate != rates[r] && r < 32; r++)
+      if (rate==32) return;
+      
+      switch(delay) {
+            case 250: d = 0; break;
+            case 500: d = 1; break;
+            case 750: d = 2; break;
+            case 1000: d = 3; break;
+            default: return;
+            }
+
+      i86_kb_set_repeat(r,d);
+}
+
+
+/***************************************
+ *       Set keyboard LEDs             *
+ ***************************************
+ +-----------+-------+-------+--------+
+ | Bits 7-3  | Bit 2 | Bit 1 | Bit 0  |
+ |   0       | Caps  | Num   | Scroll |
+ |(reserved) |  lock |  lock |  lock  |
+ +-----------+-------+-------+--------+
+ ***************************************/ 
+void kb_set_LEDs(byte status) {
+      i86_kb_set_LEDs(status);
+}