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| # IdealOS | ||
| Component of ideal world | ||
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| ### YouTube Overview | ||
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| [](https://youtube.com/watch?v=udBEQAI86ME) | ||
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| [](https://youtube.com/watch?v=Pk8kvccv47Q) |
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| @mkdir "bin/components" | ||
| @mkdir "bin/components/programs" | ||
| @mkdir "bin/components/libraries" | ||
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| @nasm "components/IdealFS-FDD.asm" -o "bin/components/IdealFS" ^ | ||
| && nasm "components/kernel/main16.asm" -o "bin/components/kernel16" ^ | ||
| && tcc32 -w "-Icomponents/global" -nostdlib -c "components/kernel/main32.c" -o "bin/components/kernel32.elf" ^ | ||
| && load "bin/components/kernel16" | to ld > "bin/components/kernel16.ld" ^ | ||
| && ld -T kernel_script.ld -o "bin/components/kernel32.o" "bin/components/kernel32.elf" ^ | ||
| && objcopy -O binary -S "bin/components/kernel32.o" "bin/components/kernel" ^ | ||
| && build_program "libraries/graphics" ^ | ||
| && build_program "libraries/ps2" ^ | ||
| && build_program "programs/bootscreen" ^ | ||
| && build_program "programs/shell" ^ | ||
| && create.c.exe 144 > "bin/storage" ^ | ||
| && create.c.exe IdealFS "bin/storage" "bin/components/IdealFS" ^ | ||
| "bin/components/kernel" "kernel" ^ | ||
| "components/kernel/main32.c" "kernel.c" ^ | ||
| "bin/components/libraries/graphics" "graphics.com" ^ | ||
| "bin/components/libraries/ps2" "ps2.com" ^ | ||
| "bin/components/programs/bootscreen" "bootscreen.com" ^ | ||
| "bin/components/programs/shell" "shell.com" ^ | ||
| && qemu -usb -m 256 -no-reboot -fda "bin\storage" ^ | ||
| || pause |
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| @mkdir "bin/components" | ||
| @mkdir "bin/components/programs" | ||
| @mkdir "bin/components/libraries" | ||
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| @nasm "components/IdealFS-HDD.asm" -o "bin/components/IdealFS" ^ | ||
| && nasm "components/kernel/main16.asm" -o "bin/components/kernel16" ^ | ||
| && tcc32 -w "-Icomponents/global" -nostdlib -c "components/kernel/main32.c" -o "bin/components/kernel32.elf" ^ | ||
| && load "bin/components/kernel16" | to ld > "bin/components/kernel16.ld" ^ | ||
| && ld -T kernel_script.ld -o "bin/components/kernel32.o" "bin/components/kernel32.elf" ^ | ||
| && objcopy -O binary -S "bin/components/kernel32.o" "bin/components/kernel" ^ | ||
| && build_program "libraries/graphics" ^ | ||
| && build_program "libraries/ps2" ^ | ||
| && build_program "programs/bootscreen" ^ | ||
| && build_program "programs/shell" ^ | ||
| && create.c.exe 144 > "bin/storage" ^ | ||
| && create.c.exe IdealFS "bin/storage" "bin/components/IdealFS" ^ | ||
| "bin/components/kernel" "kernel" ^ | ||
| "components/kernel/main32.c" "kernel.c" ^ | ||
| "bin/components/libraries/graphics" "graphics.com" ^ | ||
| "bin/components/libraries/ps2" "ps2.com" ^ | ||
| "bin/components/programs/bootscreen" "bootscreen.com" ^ | ||
| "bin/components/programs/shell" "shell.com" ^ | ||
| && qemu -usb -m 256 -no-reboot -hda "bin\storage" ^ | ||
| || pause |
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| @tcc32 -w "-Icomponents/global" -nostdlib -c "components/%1/main.c" -o "bin/components/%1.elf" ^ | ||
| && ld -T program_script.ld -o "bin/components/%1.o" "bin/components/%1.elf" ^ | ||
| && objcopy -O binary -S "bin/components/%1.o" "bin/components/%1" |
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| ;global addresses | ||
| %define kernel_address 0x8000 | ||
| %define drive_number 0x7C00 - 1 | ||
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| org 0x7C00 | ||
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| mov AX, CS | ||
| mov DS, AX | ||
| mov SS, AX | ||
| mov ES, AX | ||
| mov SP, drive_number | ||
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| mov [drive_number], DL | ||
| mov EBX, 0x500 | ||
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| read_file: | ||
| call read_sector | ||
| cmp word [BX], 0 | ||
| je kernel_not_found | ||
| cmp word [BX], 1 | ||
| jne next_file | ||
| mov SI, 0x500 + 16 | ||
| mov DI, kernel_name | ||
| mov CX, 7 | ||
| rep cmpsb | ||
| je kernel_found | ||
| next_file: | ||
| mov EAX, [EBX + 4] | ||
| cmp EAX, 0 | ||
| je kernel_not_found | ||
| mov [start_sector], EAX | ||
| jmp read_file | ||
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| kernel_found: | ||
| mov EAX, [EBX + 12] | ||
| cmp EAX, 0 | ||
| je end_fs_read_sector | ||
| mov [start_sector], EAX | ||
| mov DI, kernel_address | ||
| load_next_kernel_sector: | ||
| call read_sector | ||
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| mov SI, 0x500 + 12 | ||
| mov CX, 500 | ||
| rep movsb | ||
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| mov EAX, [EBX + 4] | ||
| cmp EAX, 0 | ||
| je end_fs_read_sector | ||
| mov [start_sector], EAX | ||
| jmp load_next_kernel_sector | ||
| end_fs_read_sector: | ||
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| push write_sector | ||
| push read_sector | ||
| push start_sector | ||
| jmp kernel_address | ||
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| kernel_not_found: | ||
| mov SI, kernel_not_found_message | ||
| jmp handle_error | ||
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| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | ||
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| ;C H S LBA | ||
| ;0 0 1 0 | ||
| ;... | ||
| ;0 0 18 17 | ||
| ;0 1 1 18 | ||
| ;... | ||
| ;0 1 18 35 | ||
| ;1 0 1 36 | ||
| ;... | ||
| ;1 0 18 53 | ||
| ;1 1 1 54 | ||
| ;... | ||
| ;1 1 18 71 | ||
| ;1 1 1 72 | ||
| ;... | ||
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| ;C = LBA / (2 * 18) | ||
| ;H = (LBA / 18) % 2 | ||
| ;S = (LBA % 18) + 1 | ||
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| ;CX = CH CL | ||
| ;cylinder 7 6 5 4 3 2 1 0 9 8 | ||
| ;sector 5 4 3 2 1 0 | ||
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| ;DH = head | ||
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| read_sector: | ||
| mov BX, 0x500 | ||
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| xor DX, DX | ||
| mov AX, [start_sector] | ||
| mov CX, 18 | ||
| div CX | ||
| mov CX, DX | ||
| inc CX | ||
| and CX, 0b00111111 ;sector | ||
| mov DX, AX | ||
| and DX, 1 | ||
| mov DH, DL ;head | ||
| shr AX, 1 | ||
| mov CH, AL ;cylinder low | ||
| shl AX, 6 | ||
| and AH, 0b11000000 | ||
| or CL, AH ;cylinder high | ||
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| mov DL, [drive_number] | ||
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| mov AX, 0x0201 | ||
| int 0x13 | ||
| jc read_error | ||
| ret | ||
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| write_sector: | ||
| mov BX, 0x500 | ||
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| xor DX, DX | ||
| mov AX, [start_sector] | ||
| mov CX, 18 | ||
| div CX | ||
| mov CX, DX | ||
| inc CX | ||
| and CX, 0b00111111 ;sector | ||
| mov DX, AX | ||
| and DX, 1 | ||
| mov DH, DL ;head | ||
| shr AX, 1 | ||
| mov CH, AL ;cylinder low | ||
| shl AX, 6 | ||
| and AH, 0b11000000 | ||
| or CL, AH ;cylinder high | ||
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| mov DL, [drive_number] | ||
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| mov AX, 0x0301 | ||
| int 0x13 | ||
| jc read_error | ||
| ret | ||
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| start_sector: dd 1 | ||
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| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | ||
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| read_error: | ||
| mov SI, read_error_message | ||
| handle_error: | ||
| call print_string | ||
| xor AX, AX | ||
| int 0x16 | ||
| int 0x19 | ||
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| ;in SI - printed string | ||
| print_string: | ||
| mov AH, 0x0E | ||
| print_next_string_char: | ||
| lodsb | ||
| cmp AL, 0 | ||
| je end_print_string | ||
| int 0x10 | ||
| jmp print_next_string_char | ||
| end_print_string: | ||
| ret | ||
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| kernel_not_found_message: db "no " | ||
| kernel_name:db "kernel", 0 | ||
| read_error_message: db "read error", 0 |
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| @@ -0,0 +1,124 @@ | ||
| ;global addresses | ||
| %define kernel_address 0x8000 | ||
| %define drive_number 0x7C00 - 1 | ||
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| org 0x7C00 | ||
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| mov AX, CS | ||
| mov DS, AX | ||
| mov SS, AX | ||
| mov ES, AX | ||
| mov SP, drive_number | ||
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| mov [drive_number], DL | ||
| mov EBX, 0x500 | ||
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| read_file: | ||
| call read_sector | ||
| cmp word [BX], 0 | ||
| je kernel_not_found | ||
| cmp word [BX], 1 | ||
| jne next_file | ||
| mov SI, 0x500 + 16 | ||
| mov DI, kernel_name | ||
| mov CX, 7 | ||
| rep cmpsb | ||
| je kernel_found | ||
| next_file: | ||
| mov EAX, [EBX + 4] | ||
| cmp EAX, 0 | ||
| je kernel_not_found | ||
| mov [start_sector], EAX | ||
| jmp read_file | ||
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| kernel_found: | ||
| mov EAX, [EBX + 12] | ||
| cmp EAX, 0 | ||
| je end_fs_read_sector | ||
| mov [start_sector], EAX | ||
| mov DI, kernel_address | ||
| load_next_kernel_sector: | ||
| call read_sector | ||
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| mov SI, 0x500 + 12 | ||
| mov CX, 500 | ||
| rep movsb | ||
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| mov EAX, [EBX + 4] | ||
| cmp EAX, 0 | ||
| je end_fs_read_sector | ||
| mov [start_sector], EAX | ||
| jmp load_next_kernel_sector | ||
| end_fs_read_sector: | ||
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| push write_sector | ||
| push read_sector | ||
| push start_sector | ||
| jmp kernel_address | ||
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| kernel_not_found: | ||
| mov SI, kernel_not_found_message | ||
| jmp handle_error | ||
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| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | ||
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| read_sector: | ||
| mov DL, [drive_number] | ||
| mov AH, 0x42 | ||
| mov SI, LBA_packet | ||
| int 0x13 | ||
| jc read_error | ||
| ret | ||
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| write_sector: | ||
| mov DL, [drive_number] | ||
| mov AX, 0x4300 | ||
| mov SI, LBA_packet | ||
| int 0x13 | ||
| jc read_error | ||
| ret | ||
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| LBA_packet: | ||
| size db 16 | ||
| zero db 0 | ||
| number_of_sectors dw 1 | ||
| buffer_address_offset dw 0x500 | ||
| buffer_address_segment dw 0 | ||
| start_sector dq 1 | ||
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| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | ||
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| read_error: | ||
| mov SI, read_error_message | ||
| handle_error: | ||
| call print_string | ||
| xor AX, AX | ||
| int 0x16 | ||
| int 0x19 | ||
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| ;in SI - printed string | ||
| print_string: | ||
| mov AH, 0x0E | ||
| print_next_string_char: | ||
| lodsb | ||
| cmp AL, 0 | ||
| je end_print_string | ||
| int 0x10 | ||
| jmp print_next_string_char | ||
| end_print_string: | ||
| ret | ||
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| kernel_not_found_message: db "no " | ||
| kernel_name:db "kernel", 0 | ||
| read_error_message: db "read error", 0 |
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