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20
Makefile
20
Makefile
@ -94,7 +94,7 @@ KernSources = libbuf/buf.c libbuf/bput.c \
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kernel/mm/heap.c kernel/mm/malloc.c \
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kernel/mm/gdt.c kernel/ps/sched.c \
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kernel/init/info.c kernel/init/ssp.c \
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kernel/cpu/rtc.c
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kernel/io/rtc.c kernel/io/keyb.c
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LibCObj=$(patsubst %.c,$(KOBJDIR)/%.o,$(LibCSources))
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@ -148,6 +148,24 @@ $(KOBJDIR)/kernel/cpu/idt.o: $(KALEIDDIR)/kernel/cpu/idt.c \
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@rm -f $@.1 $@.2
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@echo ${CL2}[$@] ${CL}Compiled.${CL3}
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$(KOBJDIR)/kernel/io/keyb.o: $(KALEIDDIR)/kernel/io/keyb.c \
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$(KALEIDDIR)/kernel/io/keyb.asm $(INCLUDEDIR)/*/*.h | $(KOBJDIR)
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@mkdir -p $(shell dirname $@)
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@$(ASM) $(ASMFLAGS) $(KALEIDDIR)/kernel/io/keyb.asm -o $@.1
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@$(KCC) $< -o $@.2
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@$(LD) $(LDFLAGS) -r $@.1 $@.2 -o $@
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@rm -f $@.1 $@.2
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@echo ${CL2}[$@] ${CL}Compiled.${CL3}
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$(KOBJDIR)/kernel/io/rtc.o: $(KALEIDDIR)/kernel/io/rtc.c \
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$(KALEIDDIR)/kernel/io/rtc.asm $(INCLUDEDIR)/*/*.h | $(KOBJDIR)
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@mkdir -p $(shell dirname $@)
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@$(ASM) $(ASMFLAGS) $(KALEIDDIR)/kernel/io/rtc.asm -o $@.1
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@$(KCC) $< -o $@.2
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@$(LD) $(LDFLAGS) -r $@.1 $@.2 -o $@
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@rm -f $@.1 $@.2
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@echo ${CL2}[$@] ${CL}Compiled.${CL3}
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## MAIN MAKEFILE ------------------------------------------------------------- #
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$(KOBJDIR)/%.o: %.c $(INCLUDEDIR)/*/*.h | $(KOBJDIR)
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@ -92,10 +92,10 @@ void IdtRegisterIrq(void (*isr)(void), uchar irq, uchar flags);
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void IdtSetup(void);
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void IdtSetGate(uchar rank, ulong base, ushort selector, uchar flags);
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void IdtHandler(ulong intNo);
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static void DisablePIC(void);
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static void SendEOItoPIC(uchar isr);
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static void EnablePIC(void);
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void SendEOItoPIC(uchar isr);
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extern void CpuIdtInit();
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extern void IdtInit();
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extern void isr0();
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extern void isr1();
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extern void isr2();
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@ -39,11 +39,19 @@ IRQList_t irqList = { 0 };
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//
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void IdtRegisterIrq(void (*isr)(void), uchar irq, uchar flags)
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{
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uchar n = irqList.n;
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KalAssert(idt[0].flags==0); // IDT uninitialized
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irqList.entry[irqList.n].isr = isr;
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irqList.entry[irqList.n].irq = irq;
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irqList.entry[irqList.n].flags = flags;
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if ((n == 225)) // IRQs not filled
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KeStartPanic("[IdtRegisterIrq] Cannot register IRQ %c function %p !",
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irq,
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isr
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);
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irqList.entry[n].isr = isr;
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irqList.entry[n].irq = irq;
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irqList.entry[n].flags = flags;
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irqList.n++;
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}
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@ -53,7 +61,7 @@ void IdtRegisterIrq(void (*isr)(void), uchar irq, uchar flags)
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void IdtSetup(void)
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{
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// XXX detect the APIC with cpuid !
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DisablePIC();
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EnablePIC();
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ushort codeSeg = (ushort)(ulong)BtLoaderInfo.codeSegment;
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@ -104,7 +112,7 @@ void IdtSetup(void)
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}
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// Load IDT
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CpuIdtInit();
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IdtInit();
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DebugLog("[IdtSetup] Initialized !\n");
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}
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@ -128,39 +136,35 @@ void IdtSetGate(uchar rank, ulong base, ushort selector, uchar flags)
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}
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//
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// Disables the PIC to activate the APIC
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// Enable and initializes the PIC to work correctly
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//
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static void DisablePIC(void)
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static void EnablePIC(void)
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{
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// Set ICW1
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// Set ICW1 - begin init of the PIC
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IoWriteByteOnPort(0x20, 0x11);
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IoWriteByteOnPort(0xa0, 0x11);
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// Set ICW2 (IRQ base offsets)
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IoWriteByteOnPort(0x21, 0xe0);
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IoWriteByteOnPort(0xa1, 0xe8);
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IoWriteByteOnPort(0x21, 0x20); //0x20 is the first free interrupt
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IoWriteByteOnPort(0xa1, 0x28);
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// Set ICW3
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IoWriteByteOnPort(0x21, 4);
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IoWriteByteOnPort(0xa1, 2);
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IoWriteByteOnPort(0x21, 0x0);
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IoWriteByteOnPort(0xa1, 0x0);
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// Set ICW4
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IoWriteByteOnPort(0x21, 1);
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IoWriteByteOnPort(0xa1, 1);
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IoWriteByteOnPort(0x21, 0x1);
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IoWriteByteOnPort(0xa1, 0x1);
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// Set OCW1 (interrupt masks)
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IoWriteByteOnPort(0x21, 0xff);
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IoWriteByteOnPort(0xa1, 0xff);
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// ENABLING LOCAL APIC
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uint *val = (void*)0xfee000f0;
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*val |= (1<<8);
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}
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//
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// Ends the current interrupt handling
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//
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static void SendEOItoPIC(uchar isr)
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void SendEOItoPIC(uchar isr)
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{
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if(isr >= 8)
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IoWriteByteOnPort(0xa0,0x20);
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@ -24,7 +24,7 @@
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%include "kaleid/kernel/cpu/isr.inc"
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global CpuIdtInit
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global IdtInit
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global divideByZero
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extern idtPtr
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extern IdtHandler
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@ -32,7 +32,7 @@ extern IdtHandler
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;;
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;; Loads the IDT
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;;
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CpuIdtInit:
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IdtInit:
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lidt [idtPtr]
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ret
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@ -1,40 +0,0 @@
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//----------------------------------------------------------------------------//
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// GNU GPL OS/K //
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// //
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// Desc: Interrupt related functions //
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// //
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// //
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// Copyright © 2018-2019 The OS/K Team //
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// //
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// This file is part of OS/K. //
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// //
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// OS/K is free software: you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation, either version 3 of the License, or //
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// any later version. //
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// //
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// OS/K is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY//without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with OS/K. If not, see <https://www.gnu.org/licenses/>. //
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//----------------------------------------------------------------------------//
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#include <kernel/base.h>
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#include <kernel/iomisc.h>
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void CpuEnableRtc(void)
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{
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ulong flags = KePauseIRQs();
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// Setting up the register control
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IoWriteByteOnPort(0x70, 0x8A); //selects status reg A and DISABLE NMI
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IoWriteByteOnPort(0x71, 0x20);
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//Enabling the IRQ 8
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IoWriteByteOnPort(0x70, 0x8B);
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char read = IoReadByteFromPort(0x71); // Because read causes reset
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IoWriteByteOnPort(0x70, 0x8B);
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IoWriteByteOnPort(0x71, read | 0x40);
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KeRestoreIRQs(flags);
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}
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@ -36,6 +36,9 @@ extern void BtInitBootInfo(multiboot_info_t *mbi, void *codeSeg);
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// io/vga.c
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extern error_t IoInitVGABuffer(void);
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//io/keyb.
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extern error_t KeybSetup(void);
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// cpu/idt.c
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extern void IdtSetup(void);
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@ -76,15 +79,10 @@ noreturn void BtStartKern(multiboot_info_t *mbInfo, uint mbMagic, void *codeSeg)
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// Several inits
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MmInitHeap();
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PsInitSched();
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//MmPrintMemoryMap();
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KeybSetup();
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IdtSetup();
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KeEnableIRQs();
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// Test Page Fault
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long addr = -1;
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DebugLog("%s", addr);
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KernLog("\nGoodbye!");
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// End this machine's suffering
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@ -22,11 +22,10 @@
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// along with OS/K. If not, see <https://www.gnu.org/licenses/>. //
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//----------------------------------------------------------------------------//
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#include <kernel/cpu.h>
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#include <kernel/iomisc.h>
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extern void KeybIsr(void);
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extern void IdtRegisterIrq(void (*isr)(void), uchar irq, uchar flags);
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extern IdtRegisterIrq(void (*isr)(void), uchar irq, uchar flags);
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void KeybSetup(void)
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{
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