A graphical interface to bootloaders.
This is still in a very early stage.
It’s essentially a rework of gfxboot but written in C.
The implemented scripting language is again a stack-based language - similar to what gfxboot uses but with integrated memory management and a hash data type.
The code is not yet ready to be used.
The scripting language is basically implemented, including the graphics primitves.
The connection to grub is still a bit awkward. The patches extend grub to
expose a link to the graphics framebuffer.
This is not strictly needed. gfxboot does never read the video memory. An`update` function that can update a rectangular screen area would suffice.
AFAICS grub does not exactly have that. There is
doublebuf_blit_update_screen in
grub-core/video/fb/video_fb.c,
though. But this updates continuous memory ranges, not rectangular areas.
The source code
/cfont getconsole getfont def
/foo "foo.fnt" readfile newfont def
/bar "bar.fnt" readfile newfont def
/text "ABC 12345 xyz # * % & § öäüß €" def
/image "katze_800.jpg" readfile unpackimage def
getcanvas image blt
0x90000000 setcolor
image dim fillrect
0xffff00 setcolor
getcanvas cfont setfont
50 50 setpos "Some font samples" show
0x00ffffff setcolor
getcanvas cfont setfont
50 100 setpos text show
getcanvas bar setfont
50 130 setpos text show
getcanvas foo setfont
50 180 setpos text showThe compiled source code
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# code: 67 entries (67 - 0)
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# line i index offset type hex word
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
0 0x00000 comm 75 51 12 a9 42 7a ad 60 # gfxboot magic
1 1 0x00008 ref 59 63 66 6f 6e 74 /cfont
2 0x0000e prim 83 4b getconsole
3 0x00010 prim 83 3f getfont
4 0x00012 prim 63 def
2 5 0x00013 ref 39 66 6f 6f /foo
6 0x00017 str 77 66 6f 6f 2e 66 6e 74 "foo.fnt"
7 0x0001f prim 83 50 readfile
8 0x00021 prim 83 41 newfont
9 0x00023 prim 63 def
3 10 0x00024 ref 39 62 61 72 /bar
11 0x00028 str 77 62 61 72 2e 66 6e 74 "bar.fnt"
12 0x00030 prim 83 50 readfile
13 0x00032 prim 83 41 newfont
14 0x00034 prim 63 def
5 15 0x00035 ref 49 74 65 78 74 /text
16 0x0003a str c7 25 41 42 43 20 31 32 "ABC 12345 xyz # * % & § öäüß €"
33 34 35 20 78 79 7a 20
23 20 2a 20 25 20 26 20
c2 a7 20 c3 b6 c3 a4 c3
bc c3 9f 20 e2 82 ac
17 0x00061 prim 63 def
7 18 0x00062 ref 59 69 6d 61 67 65 /image
19 0x00068 str c7 0d 6b 61 74 7a 65 5f "katze_800.jpg"
38 30 30 2e 6a 70 67
20 0x00077 prim 83 50 readfile
21 0x00079 prim 83 51 unpackimage
22 0x0007b prim 63 def
9 23 0x0007c prim 83 49 getcanvas
24 0x0007e word 58 69 6d 61 67 65 image
25 0x00084 prim 83 52 blt
10 26 0x00086 int c1 00 00 00 90 00 0x90000000
27 0x0008c prim 83 3a setcolor
11 28 0x0008e xref 84 10 image
29 0x00090 prim 83 4e dim
30 0x00092 prim 83 57 fillrect
13 31 0x00094 int b1 00 ff ff 00 0xffff00
32 0x00099 prim 83 3a setcolor
15 33 0x0009b prim 83 49 getcanvas
34 0x0009d word 58 63 66 6f 6e 74 cfont
35 0x000a3 prim 83 40 setfont
16 36 0x000a5 int 81 32 50
37 0x000a7 int 81 32 50
38 0x000a9 prim 83 3e setpos
39 0x000ab str c7 11 53 6f 6d 65 20 66 "Some font samples"
6f 6e 74 20 73 61 6d 70
6c 65 73
40 0x000be prim 83 4d show
18 41 0x000c0 int b1 ff ff ff 00 0x00ffffff
42 0x000c5 prim 83 3a setcolor
20 43 0x000c7 prim 83 49 getcanvas
44 0x000c9 xref 84 2c cfont
45 0x000cb prim 83 40 setfont
21 46 0x000cd int 81 32 50
47 0x000cf int 81 64 100
48 0x000d1 prim 83 3e setpos
49 0x000d3 word 48 74 65 78 74 text
50 0x000d8 prim 83 4d show
23 51 0x000da prim 83 49 getcanvas
52 0x000dc word 38 62 61 72 bar
53 0x000e0 prim 83 40 setfont
24 54 0x000e2 int 81 32 50
55 0x000e4 int 91 82 00 130
56 0x000e7 prim 83 3e setpos
57 0x000e9 xref 84 16 text
58 0x000eb prim 83 4d show
26 59 0x000ed prim 83 49 getcanvas
60 0x000ef word 38 66 6f 6f foo
61 0x000f3 prim 83 40 setfont
27 62 0x000f5 int 81 32 50
63 0x000f7 int 91 b4 00 180
64 0x000fa prim 83 3e setpos
65 0x000fc xref 84 29 text
66 0x000fe prim 83 4d showThe prompt in the lower part of the screen is the debug console.
-
get a basic boot menu working
-
fine-tune language definition
-
more systematic debug console
-
add de-fragmentation to memory management
-
check out syslinux integration
-
work on documentation
For details check out the language reference.
To get started, read the build instructions.
The code is covered by a test suite.
The binary format is also documented.