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14 commits

15 changed files with 717 additions and 298 deletions

1
.gitignore vendored
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*.elf
*.o
*.img
*.bin
mnt/
build/

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all: build/kernel-i386.elf
clean:
-@rm build/*.o build/*.elf 2> /dev/null || true
-@rm build/* 2> /dev/null || true
build/start32.o: build/ src/start32.asm
nasm -felf32 src/start32.asm -o build/start32.o
build/kernel-i386.elf: build/start32.o
tcc -m32 -nostdlib -Wl,-Ttext,0x100000 -o build/kernel-i386.elf src/*.c build/start32.o
build/kernel-i386.elf: src/* build/
tcc -m32 -nostdlib -Wl,-Ttext,0x100000 -o build/kernel-i386.elf src/start32.s src/*.c
image: build/kernel-i386.elf mount
cp build/kernel-i386.elf mnt/
cp build/kernel-i386.elf mnt/roska/start32.elf
sync
qemu-multiboot: build/kernel-i386.elf
qemu-system-i386 -kernel build/kernel-i386.elf -serial stdio
qemu-image: image
qemu-system-i386 koalemos.img -serial stdio
qemu-system-i386 roska.img -serial stdio
mount: koalemos.img mnt/
mount: roska.img mnt/
@if ! mountpoint -q "mnt/"; then \
sudo mount -o loop,offset=1048576,umask=177,dmask=022,uid=$(shell id -u),gid=$(shell id -g) koalemos.img mnt/; \
sudo mount -o loop,offset=1048576,umask=177,dmask=022,uid=$(shell id -u),gid=$(shell id -g) roska.img mnt/; \
fi;
umount:
@sudo umount mnt

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# KoalemOS
# rOSka
Multiboot compatible stupid useless OS-like project.
## Compatibility
32bit x86 legacy BIOS system
- x86 system with MultiBoot compatible bootloader.
- Linear framebuffer graphics
## Building
NASM and TinyCCompiler are used.
TinyCCompiler is used, even for assembly lol.
TCC might need manual compilation for 32bit crosscompilation
on 64bit systems.
Just download the source and `make cross` or something.

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src/font8x8_basic.h Normal file
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/**
* 8x8 monochrome bitmap fonts for rendering
* Author: Daniel Hepper <daniel@hepper.net>
*
* License: Public Domain
*
* Based on:
* // Summary: font8x8.h
* // 8x8 monochrome bitmap fonts for rendering
* //
* // Author:
* // Marcel Sondaar
* // International Business Machines (public domain VGA fonts)
* //
* // License:
* // Public Domain
*
* Fetched from: http://dimensionalrift.homelinux.net/combuster/mos3/?p=viewsource&file=/modules/gfx/font8_8.asm
**/
// Constant: font8x8_basic
// Contains an 8x8 font map for unicode points U+0000 - U+007F (basic latin)
char font8x8_basic[128][8] = {
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0000 (nul)
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0001
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0002
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0003
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0004
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0005
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0006
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0007
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0008
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0009
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000A
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000B
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000C
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000D
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000E
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000F
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0010
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0011
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0012
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0013
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0014
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0015
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0016
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0017
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0018
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0019
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001A
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001B
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001C
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001D
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001E
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001F
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0020 (space)
{ 0x18, 0x3C, 0x3C, 0x18, 0x18, 0x00, 0x18, 0x00}, // U+0021 (!)
{ 0x36, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0022 (")
{ 0x36, 0x36, 0x7F, 0x36, 0x7F, 0x36, 0x36, 0x00}, // U+0023 (#)
{ 0x0C, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x0C, 0x00}, // U+0024 ($)
{ 0x00, 0x63, 0x33, 0x18, 0x0C, 0x66, 0x63, 0x00}, // U+0025 (%)
{ 0x1C, 0x36, 0x1C, 0x6E, 0x3B, 0x33, 0x6E, 0x00}, // U+0026 (&)
{ 0x06, 0x06, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0027 (')
{ 0x18, 0x0C, 0x06, 0x06, 0x06, 0x0C, 0x18, 0x00}, // U+0028 (()
{ 0x06, 0x0C, 0x18, 0x18, 0x18, 0x0C, 0x06, 0x00}, // U+0029 ())
{ 0x00, 0x66, 0x3C, 0xFF, 0x3C, 0x66, 0x00, 0x00}, // U+002A (*)
{ 0x00, 0x0C, 0x0C, 0x3F, 0x0C, 0x0C, 0x00, 0x00}, // U+002B (+)
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x06}, // U+002C (,)
{ 0x00, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0x00}, // U+002D (-)
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x00}, // U+002E (.)
{ 0x60, 0x30, 0x18, 0x0C, 0x06, 0x03, 0x01, 0x00}, // U+002F (/)
{ 0x3E, 0x63, 0x73, 0x7B, 0x6F, 0x67, 0x3E, 0x00}, // U+0030 (0)
{ 0x0C, 0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x3F, 0x00}, // U+0031 (1)
{ 0x1E, 0x33, 0x30, 0x1C, 0x06, 0x33, 0x3F, 0x00}, // U+0032 (2)
{ 0x1E, 0x33, 0x30, 0x1C, 0x30, 0x33, 0x1E, 0x00}, // U+0033 (3)
{ 0x38, 0x3C, 0x36, 0x33, 0x7F, 0x30, 0x78, 0x00}, // U+0034 (4)
{ 0x3F, 0x03, 0x1F, 0x30, 0x30, 0x33, 0x1E, 0x00}, // U+0035 (5)
{ 0x1C, 0x06, 0x03, 0x1F, 0x33, 0x33, 0x1E, 0x00}, // U+0036 (6)
{ 0x3F, 0x33, 0x30, 0x18, 0x0C, 0x0C, 0x0C, 0x00}, // U+0037 (7)
{ 0x1E, 0x33, 0x33, 0x1E, 0x33, 0x33, 0x1E, 0x00}, // U+0038 (8)
{ 0x1E, 0x33, 0x33, 0x3E, 0x30, 0x18, 0x0E, 0x00}, // U+0039 (9)
{ 0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x00}, // U+003A (:)
{ 0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x06}, // U+003B (;)
{ 0x18, 0x0C, 0x06, 0x03, 0x06, 0x0C, 0x18, 0x00}, // U+003C (<)
{ 0x00, 0x00, 0x3F, 0x00, 0x00, 0x3F, 0x00, 0x00}, // U+003D (=)
{ 0x06, 0x0C, 0x18, 0x30, 0x18, 0x0C, 0x06, 0x00}, // U+003E (>)
{ 0x1E, 0x33, 0x30, 0x18, 0x0C, 0x00, 0x0C, 0x00}, // U+003F (?)
{ 0x3E, 0x63, 0x7B, 0x7B, 0x7B, 0x03, 0x1E, 0x00}, // U+0040 (@)
{ 0x0C, 0x1E, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x00}, // U+0041 (A)
{ 0x3F, 0x66, 0x66, 0x3E, 0x66, 0x66, 0x3F, 0x00}, // U+0042 (B)
{ 0x3C, 0x66, 0x03, 0x03, 0x03, 0x66, 0x3C, 0x00}, // U+0043 (C)
{ 0x1F, 0x36, 0x66, 0x66, 0x66, 0x36, 0x1F, 0x00}, // U+0044 (D)
{ 0x7F, 0x46, 0x16, 0x1E, 0x16, 0x46, 0x7F, 0x00}, // U+0045 (E)
{ 0x7F, 0x46, 0x16, 0x1E, 0x16, 0x06, 0x0F, 0x00}, // U+0046 (F)
{ 0x3C, 0x66, 0x03, 0x03, 0x73, 0x66, 0x7C, 0x00}, // U+0047 (G)
{ 0x33, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x33, 0x00}, // U+0048 (H)
{ 0x1E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+0049 (I)
{ 0x78, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E, 0x00}, // U+004A (J)
{ 0x67, 0x66, 0x36, 0x1E, 0x36, 0x66, 0x67, 0x00}, // U+004B (K)
{ 0x0F, 0x06, 0x06, 0x06, 0x46, 0x66, 0x7F, 0x00}, // U+004C (L)
{ 0x63, 0x77, 0x7F, 0x7F, 0x6B, 0x63, 0x63, 0x00}, // U+004D (M)
{ 0x63, 0x67, 0x6F, 0x7B, 0x73, 0x63, 0x63, 0x00}, // U+004E (N)
{ 0x1C, 0x36, 0x63, 0x63, 0x63, 0x36, 0x1C, 0x00}, // U+004F (O)
{ 0x3F, 0x66, 0x66, 0x3E, 0x06, 0x06, 0x0F, 0x00}, // U+0050 (P)
{ 0x1E, 0x33, 0x33, 0x33, 0x3B, 0x1E, 0x38, 0x00}, // U+0051 (Q)
{ 0x3F, 0x66, 0x66, 0x3E, 0x36, 0x66, 0x67, 0x00}, // U+0052 (R)
{ 0x1E, 0x33, 0x07, 0x0E, 0x38, 0x33, 0x1E, 0x00}, // U+0053 (S)
{ 0x3F, 0x2D, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+0054 (T)
{ 0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x3F, 0x00}, // U+0055 (U)
{ 0x33, 0x33, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00}, // U+0056 (V)
{ 0x63, 0x63, 0x63, 0x6B, 0x7F, 0x77, 0x63, 0x00}, // U+0057 (W)
{ 0x63, 0x63, 0x36, 0x1C, 0x1C, 0x36, 0x63, 0x00}, // U+0058 (X)
{ 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x0C, 0x1E, 0x00}, // U+0059 (Y)
{ 0x7F, 0x63, 0x31, 0x18, 0x4C, 0x66, 0x7F, 0x00}, // U+005A (Z)
{ 0x1E, 0x06, 0x06, 0x06, 0x06, 0x06, 0x1E, 0x00}, // U+005B ([)
{ 0x03, 0x06, 0x0C, 0x18, 0x30, 0x60, 0x40, 0x00}, // U+005C (\)
{ 0x1E, 0x18, 0x18, 0x18, 0x18, 0x18, 0x1E, 0x00}, // U+005D (])
{ 0x08, 0x1C, 0x36, 0x63, 0x00, 0x00, 0x00, 0x00}, // U+005E (^)
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF}, // U+005F (_)
{ 0x0C, 0x0C, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0060 (`)
{ 0x00, 0x00, 0x1E, 0x30, 0x3E, 0x33, 0x6E, 0x00}, // U+0061 (a)
{ 0x07, 0x06, 0x06, 0x3E, 0x66, 0x66, 0x3B, 0x00}, // U+0062 (b)
{ 0x00, 0x00, 0x1E, 0x33, 0x03, 0x33, 0x1E, 0x00}, // U+0063 (c)
{ 0x38, 0x30, 0x30, 0x3e, 0x33, 0x33, 0x6E, 0x00}, // U+0064 (d)
{ 0x00, 0x00, 0x1E, 0x33, 0x3f, 0x03, 0x1E, 0x00}, // U+0065 (e)
{ 0x1C, 0x36, 0x06, 0x0f, 0x06, 0x06, 0x0F, 0x00}, // U+0066 (f)
{ 0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x1F}, // U+0067 (g)
{ 0x07, 0x06, 0x36, 0x6E, 0x66, 0x66, 0x67, 0x00}, // U+0068 (h)
{ 0x0C, 0x00, 0x0E, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+0069 (i)
{ 0x30, 0x00, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E}, // U+006A (j)
{ 0x07, 0x06, 0x66, 0x36, 0x1E, 0x36, 0x67, 0x00}, // U+006B (k)
{ 0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+006C (l)
{ 0x00, 0x00, 0x33, 0x7F, 0x7F, 0x6B, 0x63, 0x00}, // U+006D (m)
{ 0x00, 0x00, 0x1F, 0x33, 0x33, 0x33, 0x33, 0x00}, // U+006E (n)
{ 0x00, 0x00, 0x1E, 0x33, 0x33, 0x33, 0x1E, 0x00}, // U+006F (o)
{ 0x00, 0x00, 0x3B, 0x66, 0x66, 0x3E, 0x06, 0x0F}, // U+0070 (p)
{ 0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x78}, // U+0071 (q)
{ 0x00, 0x00, 0x3B, 0x6E, 0x66, 0x06, 0x0F, 0x00}, // U+0072 (r)
{ 0x00, 0x00, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x00}, // U+0073 (s)
{ 0x08, 0x0C, 0x3E, 0x0C, 0x0C, 0x2C, 0x18, 0x00}, // U+0074 (t)
{ 0x00, 0x00, 0x33, 0x33, 0x33, 0x33, 0x6E, 0x00}, // U+0075 (u)
{ 0x00, 0x00, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00}, // U+0076 (v)
{ 0x00, 0x00, 0x63, 0x6B, 0x7F, 0x7F, 0x36, 0x00}, // U+0077 (w)
{ 0x00, 0x00, 0x63, 0x36, 0x1C, 0x36, 0x63, 0x00}, // U+0078 (x)
{ 0x00, 0x00, 0x33, 0x33, 0x33, 0x3E, 0x30, 0x1F}, // U+0079 (y)
{ 0x00, 0x00, 0x3F, 0x19, 0x0C, 0x26, 0x3F, 0x00}, // U+007A (z)
{ 0x38, 0x0C, 0x0C, 0x07, 0x0C, 0x0C, 0x38, 0x00}, // U+007B ({)
{ 0x18, 0x18, 0x18, 0x00, 0x18, 0x18, 0x18, 0x00}, // U+007C (|)
{ 0x07, 0x0C, 0x0C, 0x38, 0x0C, 0x0C, 0x07, 0x00}, // U+007D (})
{ 0x6E, 0x3B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+007E (~)
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} // U+007F
};

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// Alotware's font, released under public domain.
// Credits to OSDev forum user Muazzam
unsigned char font[][16] = {
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,},
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};

View file

@ -1,4 +1,7 @@
#include "framebuffer.h"
#include "font_alotware.h"
#include "serial.h"
#include "xtoa.h"
static unsigned long fb_address;
static unsigned long fb_pitch;
@ -6,7 +9,16 @@ static unsigned short fb_width, fb_height;
static unsigned char fb_bpp, fb_bytespp;
static unsigned char fb_rpos, fb_bpos, fb_gpos;
void initfb(unsigned long addr, unsigned short w, unsigned short h, unsigned char bpp, unsigned long pitch, unsigned char rpos, unsigned char gpos, unsigned char bpos) {
void initfb(
unsigned long addr,
unsigned short w,
unsigned short h,
unsigned char bpp,
unsigned long pitch,
unsigned char rpos,
unsigned char gpos,
unsigned char bpos
){
fb_address = addr;
fb_pitch = pitch;
fb_width = w;
@ -18,7 +30,70 @@ void initfb(unsigned long addr, unsigned short w, unsigned short h, unsigned cha
fb_bpos = bpos;
}
void putpixel(unsigned short x, unsigned short y, unsigned char r, unsigned char g, unsigned char b, unsigned char a) {
if (x>fb_width || y> fb_height) return;
*((unsigned long *)(fb_address + y*fb_pitch + x*fb_bytespp)) = r<<fb_rpos | g<<fb_gpos | b<<fb_bpos;
void putpixel(
unsigned short x,
unsigned short y,
unsigned char r,
unsigned char g,
unsigned char b
){
if (x > fb_width || y > fb_height)
return;
unsigned long dest_addr = fb_address + y*fb_pitch + x*fb_bytespp;
if (fb_bpp == 32) {
*((unsigned long *)(dest_addr)) = r<<fb_rpos | g<<fb_gpos | b<<fb_bpos;
} else {
*((unsigned char *)(dest_addr + fb_rpos/8)) = r;
*((unsigned char *)(dest_addr + fb_gpos/8)) = g;
*((unsigned char *)(dest_addr + fb_bpos/8)) = b;
}
}
void putc(
const char *character,
unsigned short x,
unsigned short y,
unsigned char r,
unsigned char g,
unsigned char b
){
// Limit to ASCII printable
if (*character < 0x20 || *character > 0x7e) {
serial_write_string("\nputc ASCII out of range: ");
serial_write_string(uitoa(*character, 16));
return;
}
unsigned char *rowdata = font[*character];
unsigned char charx, chary, iy, ix;
unsigned char sizex=1;
unsigned char sizey=1;
for (chary=0;chary<16;chary++) {
for (charx=0;charx<8;charx++) {
//unsigned char pix = rowdata[chary] & 1 << charx;
unsigned char pix = rowdata[chary] & 0b10000000 >> charx;
if (pix) {
for (iy=0;iy<sizey;iy++) {
for (ix=0;ix<sizex;ix++) {
putpixel(x+charx*sizex+ix, y+chary*sizey+iy, r, g, b);
}
}
}
}
}
}
void puts(
const char *text,
unsigned short x,
unsigned short y,
unsigned char r,
unsigned char g,
unsigned char b
){
unsigned char i = 0;
while (text[i]) {
putc(text+i, x+i*8, y, r, g, b);
i++;
}
}

View file

@ -1,7 +1,37 @@
#ifndef _FRAMEBUFFER_H
#define _FRAMEBUFFER_H 1
void initfb(unsigned long addr, unsigned short w, unsigned short h, unsigned char bpp, unsigned long pitch, unsigned char rpos, unsigned char gpos, unsigned char bpos);
void putpixel(unsigned short x, unsigned short y, unsigned char r, unsigned char g, unsigned char b, unsigned char a);
void initfb(
unsigned long addr,
unsigned short w,
unsigned short h,
unsigned char bpp,
unsigned long pitch,
unsigned char rpos,
unsigned char gpos,
unsigned char bpos
);
void putpixel(
unsigned short x,
unsigned short y,
unsigned char r,
unsigned char g,
unsigned char b
);
void putc(
const char *character,
unsigned short x,
unsigned short y,
unsigned char r,
unsigned char g,
unsigned char b
);
void puts(
const char *text,
unsigned short x,
unsigned short y,
unsigned char r,
unsigned char g,
unsigned char b
);
#endif

View file

@ -1,25 +1,28 @@
#include "multiboot.h"
#include "framebuffer.h"
#include "serial.h"
#include "xtoa.h"
static inline void outb(unsigned short port, unsigned char val) {
static inline void outb(unsigned short port, unsigned char val)
{
asm volatile("outb %0, %1" : : "a"(val), "Nd"(port) : "memory");
}
static inline unsigned char inb(unsigned short port) {
static inline unsigned char inb(unsigned short port)
{
unsigned char ret;
asm volatile("inb %1, %0" : "=a"(ret) : "Nd"(port) : "memory");
return ret;
}
void kmain (unsigned int mbootmagick, multiboot_info_t* mbootinfo) {
void kmain (unsigned int mbootmagick, multiboot_info_t* mbootinfo)
{
// Cursor disabling
outb(0x3D4, 0x0A);
outb(0x3D5, 0x20);
int serial_initialized = serial_init();
serial_write_string("\n=== KoalemOS ===\n");
serial_write_string("\n=== rOSka ===\n");
// Check multiboot header
if (mbootmagick != MULTIBOOT_BOOTLOADER_MAGIC) {
@ -67,17 +70,29 @@ void kmain (unsigned int mbootmagick, multiboot_info_t* mbootinfo) {
serial_write_string(uitoa(mbootinfo->mem_upper/1024, 10));
serial_write_string(" M");
initfb(mbootinfo->framebuffer_addr, mbootinfo->framebuffer_width, mbootinfo->framebuffer_height, mbootinfo->framebuffer_bpp, mbootinfo->framebuffer_pitch, mbootinfo->framebuffer_red_field_position, mbootinfo->framebuffer_green_field_position, mbootinfo->framebuffer_blue_field_position);
int x, y, i;
unsigned char c = 0;
for(;;) {
for(y=0; y < mbootinfo->framebuffer_height; y++) {
for(x=0; x < mbootinfo->framebuffer_width; x++) {
putpixel(x, y, c, c, c, 0xff);
initfb(
mbootinfo->framebuffer_addr,
mbootinfo->framebuffer_width,
mbootinfo->framebuffer_height,
mbootinfo->framebuffer_bpp,
mbootinfo->framebuffer_pitch,
mbootinfo->framebuffer_red_field_position,
mbootinfo->framebuffer_green_field_position,
mbootinfo->framebuffer_blue_field_position
);
int x, y;
for (y=mbootinfo->framebuffer_height; y>=0; y--) {
for (x=mbootinfo->framebuffer_width; x>=0; x--) {
putpixel(x, y, 0, 0x55, 0x55);
}
}
c+=4;
}
serial_write_string("\nExecution finished, halting...");
puts(" !\"#$%&\'()*+,-./0123456789 :;<=>?@", mbootinfo->framebuffer_width-35*8, mbootinfo->framebuffer_height-16*3-8, 0xff, 0xff, 0xff);
puts("ABCDEFGHIJKLMNOPQRSTUVWXYZ [\\]^_`", mbootinfo->framebuffer_width-35*8, mbootinfo->framebuffer_height-16*2-8, 0xff, 0xff, 0xff);
puts("abcdefghijklmnopqrstuvwxyz {|}~", mbootinfo->framebuffer_width-35*8, mbootinfo->framebuffer_height-16-8, 0xff, 0xff, 0xff);
puts("rOSka on paskaa ja paska ei lopu koskaa, huehue", 0, 0, 0xff, 0xff, 0xff);
//while(1){}
serial_write_string("\nExecution finished, halting...\n");
}

View file

@ -1,49 +1,56 @@
#include "serial.h"
#define PORT 0x3f8 // COM1
static inline void outb(unsigned short port, unsigned char val) {
static inline void outb(unsigned short port, unsigned char val)
{
asm volatile("outb %0, %1" : : "a"(val), "Nd"(port) : "memory");
}
static inline unsigned char inb(unsigned short port) {
static inline unsigned char inb(unsigned short port)
{
unsigned char ret;
asm volatile("inb %1, %0" : "=a"(ret) : "Nd"(port) : "memory");
return ret;
}
int serial_init() {
int serial_init()
{
outb(PORT + 1, 0x00); // Disable all interrupts
outb(PORT + 3, 0x80); // Enable DLAB (set baud rate divisor)
outb(PORT + 0, 0x03); // Set divisor to 3 (lo byte) 38400 baud
outb(PORT + 1, 0x00); // (hi byte)
outb(PORT + 3, 0x03); // 8 bits, no parity, one stop bit
outb(PORT + 2, 0xC7); // Enable FIFO, clear them, with 14-byte threshold
outb(PORT + 2, 0xC7); // Enable FIFO, clear them, 14-byte threshold
outb(PORT + 4, 0x0B); // IRQs enabled, RTS/DSR set
outb(PORT + 4, 0x1E); // Set in loopback mode, test the serial chip
outb(PORT + 0, 0xAE); // Test serial chip (send byte 0xAE and check if serial
// returns same byte)
outb(PORT + 0, 0xAE); // Test serial chip (send byte 0xAE and check
// if serial returns same byte)
// Check if serial is faulty (i.e: not same byte as sent)
if (inb(PORT + 0) != 0xAE) {
if (inb(PORT + 0) != 0xAE)
return 1;
}
// If serial is not faulty set it in normal operation mode
// (not-loopback with IRQs enabled and OUT#1 and OUT#2 bits enabled)
outb(PORT + 4, 0x0F);
return 0;
}
static int serial_is_transmit_empty() { return inb(PORT + 5) & 0x20; }
static void serial_write_char(char chr) {
static int serial_is_transmit_empty()
{
return inb(PORT + 5) & 0x20;
}
static void serial_write_char(char chr)
{
while (serial_is_transmit_empty() == 0);
outb(PORT, chr);
}
void serial_write_string(const char* text) {
void serial_write_string(const char* text)
{
int i = 0;
while (text[i]) {
serial_write_char(text[i]);
i++;
}
}

View file

@ -1,47 +0,0 @@
MULTIBOOT_HEADER_MAGIC equ 0x1BADB002
MULTIBOOT_PAGE_ALIGN equ 1 << 0
MULTIBOOT_MEMORY_INFO equ 1 << 1
MULTIBOOT_VIDEO_REQUEST equ 0 << 2
MULTIBOOT_AOUT_KLUDGE equ 0 << 16
MULTIBOOT_HEADER_FLAGS equ MULTIBOOT_PAGE_ALIGN | MULTIBOOT_MEMORY_INFO | MULTIBOOT_VIDEO_REQUEST
MULTIBOOT_HEADER_FLAGS equ MULTIBOOT_PAGE_ALIGN | MULTIBOOT_MEMORY_INFO | MULTIBOOT_VIDEO_REQUEST | MULTIBOOT_AOUT_KLUDGE
MULTIBOOT_CHECKSUM equ -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS)
section .multiboot
align 4
dd MULTIBOOT_HEADER_MAGIC
dd MULTIBOOT_HEADER_FLAGS
dd MULTIBOOT_CHECKSUM
dd 0 ; header address
dd 0 ; load address
dd 0 ; load end address
dd 0 ; bss end address
dd 0 ; entry address
dd 0 ; video mode_type (0:fb, 1:txt) (set flags[2]!)
dd 1024 ; video width
dd 768 ; video height
dd 32 ; video depth
section .bss
align 16
stack_bottom:
resb 16384
stack_top:
section .text
global _start
extern kmain
_start:
; Setup stack
mov esp, stack_top
; Call the main kernel function.
push ebx
push eax
call kmain
.hang:
cli
hlt
jmp .hang

44
src/start32.s Normal file
View file

@ -0,0 +1,44 @@
.set MULTIBOOT_PAGE_ALIGN, 1 << 0
.set MULTIBOOT_MEMORY_INFO, 1 << 1
.set MULTIBOOT_VIDEO_REQUEST, 1 << 2
.set MULTIBOOT_AOUT_KLUDGE, 0 << 16
.set MULTIBOOT_HEADER_MAGIC, 0x1BADB002
.set MULTIBOOT_HEADER_FLAGS, MULTIBOOT_PAGE_ALIGN | MULTIBOOT_MEMORY_INFO | MULTIBOOT_VIDEO_REQUEST | MULTIBOOT_AOUT_KLUDGE
.set MULTIBOOT_CHECKSUM, -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS)
#.section ".multiboottbabeee"
.align 4
.long MULTIBOOT_HEADER_MAGIC
.long MULTIBOOT_HEADER_FLAGS
.long MULTIBOOT_CHECKSUM
.long 0 # header address
.long 0 # load address
.long 0 # load end address
.long 0 # bss end address
.long 0 # entry address
.long 0 # video mode_type (0:fb, 1:txt) (set flags[2]!)
.long 1024 # video width
.long 768 # video height
.long 32 # video depth
.bss
.align 16
stack_bottom:
.skip 16384 # 16k
stack_top:
.text
.global _start
_start:
# Setup stack
mov $stack_top, %esp
# Call the main kernel function.
push %ebx
push %eax
call kmain
cli
1: hlt
jmp 1b

View file

@ -1,97 +0,0 @@
#include "vga.h"
#define VGA_WIDTH 80
#define VGA_HEIGHT 25
#define VGA_MEM_ADDR 0xb8000
#define CURSOR_HOME (VGA_HEIGHT-1)*VGA_WIDTH
#define CURSOR_CHR 177;
unsigned int cursor_loc = CURSOR_HOME;
unsigned char fgcolor;
unsigned char bgcolor;
unsigned short blank;
static unsigned char vga_entry_color(enum vga_color fg, enum vga_color bg) {
return fg | bg << 4;
}
unsigned short vga_blank_entry() {
return vga_entry_color(fgcolor, bgcolor) << 8;
}
void draw_cursor(void) {
*((unsigned char *)VGA_MEM_ADDR + cursor_loc * 2) = CURSOR_CHR;
*((unsigned char *)VGA_MEM_ADDR+1 + cursor_loc * 2) = vga_entry_color(fgcolor, bgcolor);
}
void vga_set_color(enum vga_color fg, enum vga_color bg) {
fgcolor = fg;
bgcolor = bg;
}
void vga_init(enum vga_color fg, enum vga_color bg) {
vga_set_color(fg, bg);
blank = vga_blank_entry();
cls();
}
void cls(void) {
int i;
for (i=0; i<VGA_HEIGHT*VGA_WIDTH;i++) {
*((unsigned short *) VGA_MEM_ADDR+i) = blank;
}
}
void scroll(void) {
int y;
int x;
*((unsigned short *) VGA_MEM_ADDR+cursor_loc) = blank;
for (y=0;y<VGA_HEIGHT;y++) {
for (x = 0;x<VGA_WIDTH;x++) {
*((unsigned short *) VGA_MEM_ADDR+y*VGA_WIDTH+x) = *((unsigned short *) VGA_MEM_ADDR+(y+1)*VGA_WIDTH+x);
}
}
for (x=0;x<VGA_WIDTH;x++) {
*((unsigned short *) VGA_MEM_ADDR+CURSOR_HOME+x) = blank;
}
cursor_loc = CURSOR_HOME;
draw_cursor();
}
void putchar(unsigned char chr) {
if (chr == '\n') {
scroll();
return;
}
*((unsigned char *) VGA_MEM_ADDR+cursor_loc * 2) = chr;
*((unsigned char *) VGA_MEM_ADDR+1+cursor_loc * 2) = vga_entry_color(fgcolor, bgcolor);
cursor_loc++;
if (cursor_loc >= VGA_HEIGHT*VGA_WIDTH) {
scroll();
}
draw_cursor();
}
void vga_write(const char* text) {
int i = 0;
while(text[i]) {
putchar(text[i]);
i++;
}
}
void vga_write_color( const char* text, enum vga_color fg, enum vga_color bg) {
unsigned char prevfg = fgcolor;
unsigned char prevbg = bgcolor;
vga_set_color(fg, bg);
vga_write(text);
fgcolor = prevfg;
bgcolor = prevbg;
}
void vga_write_line(const char* text) {
if (cursor_loc != CURSOR_HOME) {
scroll();
}
vga_write(text);
scroll();
}
void vga_write_line_color(const char* text, enum vga_color fg, enum vga_color bg) {
unsigned char prevfg = fgcolor;
unsigned char prevbg = bgcolor;
vga_set_color(fg, bg);
vga_write_line(text);
fgcolor = prevfg;
bgcolor = prevbg;
}

View file

@ -1,24 +0,0 @@
#ifndef HEADER_VGA
#define HEADER_VGA
enum vga_color {
VGA_COLOR_BLACK = 0,
VGA_COLOR_BLUE = 1,
VGA_COLOR_GREEN = 2,
VGA_COLOR_CYAN = 3,
VGA_COLOR_RED = 4,
VGA_COLOR_MAGENTA = 5,
VGA_COLOR_ORANGE = 6,
VGA_COLOR_GREY = 7,
VGA_COLOR_GRAY = 7,
};
void cls(void);
void vga_init(enum vga_color fg, enum vga_color bg);
void vga_write(const char* text);
void vga_write_color( const char* text, enum vga_color fg, enum vga_color bg);
void vga_write_line(const char* text);
void vga_write_line_color( const char* text, enum vga_color fg, enum vga_color bg);
#endif

View file

@ -1,5 +1,6 @@
#include "xtoa.h"
char* itoa(int value, int base) {
char* itoa(int value, int base)
{
char* result;
// check that the base if valid
@ -24,7 +25,9 @@ char* itoa(int value, int base) {
}
return result;
}
char* uitoa(unsigned int value, int base) {
char* uitoa(unsigned int value, int base)
{
char* result;
// check that the base if valid
@ -39,7 +42,6 @@ char* uitoa(unsigned int value, int base) {
*ptr++ = "zyxwvutsrqponmlkjihgfedcba9876543210123456789abcdefghijklmnopqrstuvwxyz" [35 + (tmp_value - value * base)];
} while ( value );
*ptr-- = '\0';
while (ptr1 < ptr) {
tmp_char = *ptr;
@ -48,7 +50,9 @@ char* uitoa(unsigned int value, int base) {
}
return result;
}
char* ltoa(long value, int base) {
char* ltoa(long value, int base)
{
char* result;
// check that the base if valid
@ -73,7 +77,9 @@ char* ltoa(long value, int base) {
}
return result;
}
char* ultoa(unsigned long value, int base) {
char* ultoa(unsigned long value, int base)
{
char* result;
// check that the base if valid
@ -88,8 +94,6 @@ char* ultoa(unsigned long value, int base) {
*ptr++ = "zyxwvutsrqponmlkjihgfedcba9876543210123456789abcdefghijklmnopqrstuvwxyz" [35 + (tmp_value - value * base)];
} while ( value );
// Apply negative sign
//if (tmp_value < 0) *ptr++ = '-';
*ptr-- = '\0';
while (ptr1 < ptr) {
tmp_char = *ptr;