Nigel
b4cff3e667
- 1 block = 4096 bytes : because this will make page fault handling possibly somewhat easier - 1 byte in the bitmap = 8 blocks of physical memory unsure if the allocation is perfect ... guess i'll find out some day if this is actually correct. The bitmap needs 16kb to keep track of 2gb of physical memory. Seems a decent percentage to me.
83 lines
2.9 KiB
C++
83 lines
2.9 KiB
C++
#include "superVisorTerminal.h"
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void startSuperVisorTerminal(BootInfo* bootinfo){
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while (true){
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printf("SUPERVISOR:>$ " );
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int characterCount = 0;
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char command[10] = "";
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// NOTE: lets just show a kernel prompt
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uint8_t ScanCode = getKey();
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while( ScanCode != 0x1C )
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{
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char character = getASCIIKey();
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kterm_put(character );
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// wHAT THE HELL
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if( characterCount < 10 ){
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command[characterCount] = character;
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characterCount++;
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}
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ScanCode = getKey();
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}
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printf("\n");
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KeyHandled();
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if ( strncmp("DATE", command , characterCount ) == 0 )
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{
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read_rtc();
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printf("======= Time & Date ==========\n");
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printf(" - Date: %02d-%02d-%02d\n",day, month, year);
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printf(" - Time: %02d:%02d:%02d\n" , hour, minute, second);
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printf(" - Ticks: %09d\n", pit_tick);
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}
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else if( strncmp ("MEMORY" , command , characterCount) == 0 )
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{
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// Show memory layout
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printf("========= Memory ==========\n");
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printf("Kernel MemoryMap:\n");
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printf("kernel: 0x%x - 0x%x\n", &kernel_begin , &kernel_end);
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printf("Frames used: 0x%x blocks of 4 KiB\n", 0);
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const int bytesInGiB = 1073741824;
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int64_t bytesLeft = (bootinfo->memory->TotalMemory % bytesInGiB) / bytesInGiB;
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int64_t effectiveNumberOfGib = bootinfo->memory->TotalMemory / bytesInGiB;
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int64_t GiBs = effectiveNumberOfGib + bytesLeft;
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printf("Available Memory: %d bytes, %d GiB\n", bootinfo->memory->TotalMemory, GiBs );
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printf("Reserved Memory: %d bytes\n", bootinfo->memory->ReservedMemory);
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//printf("\n\n");
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//PrintPhysicalMemoryAllocation( );
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}
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else if(strncmp("TEST", command, characterCount) == 0)
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{
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// TEST #DE exception
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asm volatile ("MOV $4, %AX ; MOV $0, %BX ; DIV %BX"); // IRS 0
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}
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else if (strncmp("VERSION", command , characterCount) == 0)
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{
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// Show version information
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printf("========= Version ========\n");
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printf("Kernel v%d\n", 0);
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}
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else if(strncmp("CLEAR", command, characterCount) == 0)
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{
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kterm_init();
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printf("|=== BarinkOS ===|\n");
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}
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else
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{
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printf("Unknown command\n");
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}
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delay(1000);
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}
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} |