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This commit is contained in:
Baptiste Wicht 2013-12-02 18:28:14 +01:00
parent 4dc185d3b7
commit 57af577ba9
6 changed files with 29 additions and 9 deletions
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15
Makefile
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@ -1,20 +1,23 @@
.PHONY: default clean force_look qemu bochs debug
.PHONY: default clean force_look qemu bochs debug sectors
default: thor.flp
bootloader/bootloader.bin: force_look
cd bootloader; $(MAKE)
micro_kernel/micro_kernel.bin: force_look
cd micro_kernel; $(MAKE)
kernel/kernel.bin: force_look
cd kernel; $(MAKE)
filler.bin: kernel/kernel.bin micro_kernel/micro_kernel.bin bootloader/bootloader.bin
filler.bin: kernel/kernel.bin micro_kernel/micro_kernel.bin
bash fill.bash
thor.flp: filler.bin
sectors: force_look filler.bin
cd bootloader; $(MAKE) sectors
bootloader/bootloader.bin: force_look sectors
cd bootloader; $(MAKE)
thor.flp: bootloader/bootloader.bin
cat bootloader/bootloader.bin > thor.bin
cat micro_kernel/micro_kernel.bin >> thor.bin
cat kernel/kernel.bin >> thor.bin

7
bootloader/Makefile
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@ -1,9 +1,14 @@
default: bootloader.bin
.PHONY: sectors clean
sectors:
bash compute_sectors.bash
stage1.bin: stage1.asm
nasm -w+all -f bin -o stage1.bin stage1.asm
stage2.bin: stage2.asm
stage2.bin: stage2.asm sectors.asm
nasm -w+all -f bin -o stage2.bin stage2.asm
padding.bin:

10
bootloader/compute_sectors.bash Normal file
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@ -0,0 +1,10 @@
#!/bin/bash
size_1=`stat -c%s ../kernel/kernel.bin`
size_2=`stat -c%s ../micro_kernel/micro_kernel.bin`
size_3=`stat -c%s ../filler.bin`
total_size=$(( $size_1 + $size_2 + $size_3 ))
sectors=$(( $total_size / 512 ))
echo "sectors equ $sectors" > sectors.asm

1
bootloader/sectors.asm Normal file
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@ -0,0 +1 @@
sectors equ 79

2
bootloader/stage2.asm
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@ -10,9 +10,9 @@
jmp second_step
%include "intel_16.asm"
%include "sectors.asm"
KERNEL_BASE equ 0x100 ; 0x100:0x0 = 0x1000
sectors equ 0x52 ; sectors to read
bootdev equ 0x0
; Loaded at 0x90:0x0

3
fill.bash
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@ -1,5 +1,6 @@
#!/bin/bash
size=`stat -c%s kernel/kernel.bin`
let filler_size=25600-$size
better_size=$(( ($size / 512 + 1) * 512 ))
let filler_size=$better_size-$size
dd if=/dev/zero of=filler.bin bs=1 count=$filler_size