80 lines
1.9 KiB
C
80 lines
1.9 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 <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 "shell/shell.c"
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//! format of a memory region
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typedef struct {
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uint32_t startLo;
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uint32_t startHi;
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uint32_t sizeLo;
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uint32_t sizeHi;
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uint32_t type;
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uint32_t 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 dword _code;
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extern dword _data;
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extern dword _bss;
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extern dword _end;
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void k_init(multiboot_info* bootinfo)
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{
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// Start by zero-ing the bss
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memset(&_bss, 0, &_end - &_bss);
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// Initialize HAL
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i86_hal_initialize();
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// Initialize Graphics
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graphics_init();
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// cleanup the console screen
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set_default_colors (0x07, 0x04);
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clrscr();
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// Start memory manager
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uint32_t memSize = 1024 + bootinfo->m_memoryLo + bootinfo->m_memoryHi*64;
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memory_region* memMap = (memory_region*)0x1000;
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pmmngr_init (memSize, (uint32_t)&_end);
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unsigned int i;
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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) pmmngr_init_region (memMap[i].startLo, memMap[i].sizeLo);
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// Protect kernel, bios data area etc
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_end += (memSize / 4) * 3;
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pmmngr_deinit_region (0x100000, _end - 0x100000);
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pmmngr_deinit_region (0x0, 0x500);
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pmmngr_deinit_region (0x9FC00, 0x400);
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pmmngr_deinit_region (0xA0000, 0x60000);
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// Start Virtual Memory Manager & Enable paging
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vmmngr_initialize();
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}
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void k_main(uint32_t kernel_size, multiboot_info* bootinfo)
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{
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k_init(bootinfo);
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apps_osver();
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shell();
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for(;;);
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} |