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os-k/kaleid/kernel/init/init.c

109 lines
3.4 KiB
C

//----------------------------------------------------------------------------//
// GNU GPL OS/K //
// //
// Desc: Kernel entry point //
// //
// //
// Copyright © 2018-2019 The OS/K Team //
// //
// This file is part of OS/K. //
// //
// OS/K is free software: you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation, either version 3 of the License, or //
// any later version. //
// //
// OS/K is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY//without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with OS/K. If not, see <https://www.gnu.org/licenses/>. //
//----------------------------------------------------------------------------//
#include <extras/buf.h>
#include <kernel/iomisc.h>
#include <kernel/cursor.h>
#include <kernel/mboot.h>
#include <kernel/heap.h>
#include <kernel/mm.h>
// info.c
extern void BtDoSanityChecks(uint mbMagic);
extern void BtInitBootInfo(multiboot_info_t *mbi, void *codeSeg);
// io/vga.c
extern error_t IoInitVGABuffer(void);
//io/keyb.c
extern void IoSetupKeyb(void);
extern void IoEnableKeyb(void);
//io/rtc.c
extern void IoSetupRtc(void);
extern void IoEnableRtc(void);
extern ulong IoRtcTicks;
// cpu/idt.c
extern void IdtSetup(void);
// ps/proc.c test function
extern void pstest(void);
// interrupts tests
extern void divideByZero(void);
void test(void)
{
asm volatile ("hlt");
}
//
// Entry point of the Kaleid kernel
//
noreturn void BtStartKern(multiboot_info_t *mbInfo, uint mbMagic, void *codeSeg)
{
KeDisableIRQs();
// Initialize the BootInfo_t structure
BtInitBootInfo(mbInfo, codeSeg);
// Screen I/O available from this point on
IoInitVGABuffer();
IoEnableCursor();
IoUpdateCursor(0, 0);
KernLog("%c%c%c OS/K\n\n", 219, 219, 219); //grrr
// Sanity checks
BtDoSanityChecks(mbMagic);
// Memory & scheduler
MmInitMemoryMap();
// Several inits
MmInitHeap();
PsInitSched();
// Drivers ISR inits
IoSetupRtc();
IoSetupKeyb();
// Interrupts launching
IdtSetup();
KeEnableIRQs();
// Drivers enabling
IoEnableRtc();
IoEnableKeyb();
while (1) {
}
KernLog("\nGoodbye after %d ticks", IoRtcTicks);
// End this machine's suffering
BFlushBuf(BStdOut);
KeCrashSystem();
}