72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
#include <string.h>
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#include <system.h>
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#include <conio.h>
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#include <hal.h>
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#include "hal/floppy/floppy.h"
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#include <time.h>
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#include <bootinfo.h>
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#include "memory/mmngr_ph.h"
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#include "memory/mmngr_vi.h"
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#include "video/vga03h.h"
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#include <stdlib.h>
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// format of a memory region
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typedef struct {
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unsigned startLo;
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unsigned startHi;
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unsigned sizeLo;
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unsigned sizeHi;
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unsigned type;
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unsigned acpi_3_0;
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} memory_region ;
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// different memory regions (in memory_region.type)
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/*char* strMemoryTypes[] = {
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"",
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"Available", //memory_region.type==0
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"Reserved", //memory_region.type==1
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"ACPI Reclaim", //memory_region.type==2
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"ACPI NVS Memory" //memory_region.type==3
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};*/
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extern void _code, _data, _bss, _end;
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void k_init(multiboot_info* bootinfo)
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{
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memset(&_bss, 0, &_end - &_bss); // zero the bss
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unsigned int i;
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// Start phyiscal memory manager
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unsigned memSize = bootinfo->Memory;
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memory_region* memMap = bootinfo->MemoryMapAddress;
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pmmngr_init (memSize, (unsigned)&_end);
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// Initialize graphics & HAL
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//graphics_init();
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i86_hal_initialize();
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// Initialize memory
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for (i=0; (memMap[i].sizeHi != 0 || memMap[i].sizeLo != 0) && i<15; ++i)
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if (memMap[i].type==1)
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pmmngr_init_region (memMap[i].startLo, memMap[i].sizeLo);
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// Protect kernel, bios data area etc
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pmmngr_deinit_region (0x100000, 4096+(unsigned)((&_end) + (memSize / 4)*3) - 0xC0000000);
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pmmngr_deinit_region (0x0, 0x500); // IVT, Bios Data Area
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// Initialize virtual mem manager
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vmmngr_initialize();
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}
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extern void shell();
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void k_main(unsigned kernel_size, multiboot_info* bootinfo)
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{
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k_init(bootinfo);
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vga03h_install();
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shell();
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for(;;);
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} |