1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
set prefix=(memdisk)/boot/grub
insmod at_keyboard
insmod usb_keyboard
insmod nativedisk
insmod ehci
insmod ohci
insmod uhci
insmod usb
insmod usbms
insmod regexp
terminal_input --append at_keyboard
terminal_input --append usb_keyboard
terminal_output --append cbmemc
gfxpayload=keep
terminal_output --append gfxterm
if [ -f (cbfsdisk)/background.png ]; then
insmod png
background_image (cbfsdisk)/background.png
elif [ -f (cbfsdisk)/background.jpg ]; then
insmod jpeg
background_image (cbfsdisk)/background.jpg
fi
set default="0"
set timeout=10
set pager=1
keymap usqwerty
function try_user_config {
set root="${1}"
for dir in boot grub grub2 boot/grub boot/grub2; do
for name in '' osboot_ autoboot_ libreboot_ coreboot_; do
if [ -f /"${dir}"/"${name}"grub.cfg ]; then
unset superusers
configfile /"${dir}"/"${name}"grub.cfg
fi
done
done
}
function search_grub {
echo -n "Attempting to load grub.cfg from: "
for i in 0 1 2 3 4 5 6 7 8 9 10 11; do
echo "\nTrying disk ${1}${i}"
for part in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20; do
echo "\nTrying partiton ${part}"
try_user_config "(${1}${i},${part})"
done
# raw devices e.g. (ahci0) instead of (ahci0,1)
echo "\nTrying to boot to a raw disk ..."
try_user_config "(${1}${i})"
echo # Insert newline
done
}
function try_isolinux_config {
set root="${1}"
for dir in '' /boot; do
if [ -f "${dir}"/isolinux/isolinux.cfg ]; then
syslinux_configfile -i "${dir}"/isolinux/isolinux.cfg
elif [ -f "${dir}"/syslinux/syslinux.cfg ]; then
syslinux_configfile -s "${dir}"/syslinux/syslinux.cfg
fi
done
}
function search_isolinux {
for i in 0 1 2 3 4 5 6 7 8 9 10 11; do
echo "\nAttempting to parse isolinux menu from ${1}${i}"
for part in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20; do
echo "\nTrying partiton ${part}"
try_isolinux_config "(${1}${i},${part})"
done
# raw devices e.g. (usb0) instead of (usb0,1)
echo "\nTrying raw usb device ..."
try_isolinux_config "(${1}${i})"
echo # Insert newline
done
}
menuentry 'Load Operating System (incl. fully encrypted disks) [o]' --hotkey='o' {
search_grub ahci
search_grub ata
# grub device enumeration is very slow, so checks are hardcoded
# TODO: add more strings, based on what distros set up when
# the user select auto-partitioning on those installers
lvmvol="lvm/matrix-bootvol lvm/matrix-rootvol"
raidvol="md/0 md/1 md/2 md/3 md/4 md/5 md/6 md/7 md/8 md/9"
# in practise, doing multiple redundant checks is perfectly fast and
# TODO: optimize grub itself, and use */? here for everything
for vol in ${lvmvol} ${raidvol} ; do
try_user_config "${vol}"
done
unset ahcidev
unset atadev
for i in 11 10 9 8 7 6 5 4 3 2 1 0; do
for part in 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1; do
ahcidev="(ahci${i},${part}) ${ahcidev}"
atadev="(ata${i},${part}) ${atadev}"
done
done
set pager=0
echo -n "Attempting to cryptomount: "
for dev in ${ahcidev} ${atadev} ${lvmvol} ${raidvol}; do
echo -n "${dev} "
if cryptomount "${dev}" ; then break ; fi
done
set pager=1
echo
# after cryptomount, lvm volumes might be available
for vol in ${lvmvol}; do
try_user_config "${vol}"
done
search_grub crypto
# Last resort, if all else fails
set root=ahci0,1
for p in / /boot/; do
if [ -f "${p}vmlinuz" ]; then
linux ${p}vmlinuz root=/dev/sda1 rw
if [ -f "${p}initrd.img" ]; then
initrd ${p}initrd.img
fi
fi
done
# Last resort (for setups that use IDE instead of SATA)
set root=ata0,1
for p in / /boot/; do
if [ -f "${p}vmlinuz" ]; then
linux ${p}vmlinuz root=/dev/sda1 rw
if [ -f "${p}initrd.img" ]; then
initrd ${p}initrd.img
fi
fi
done
true # Prevent pager requiring to accept each line instead of whole screen
}
menuentry 'Search ISOLINUX menu (AHCI) [a]' --hotkey='a' {
search_isolinux ahci
}
menuentry 'Search ISOLINUX menu (USB) [u]' --hotkey='u' {
search_isolinux usb
}
menuentry 'Load test configuration (grubtest.cfg) inside of CBFS [t]' --hotkey='t' {
set root='(cbfsdisk)'
if [ -f /grubtest.cfg ]; then
configfile /grubtest.cfg
fi
}
menuentry 'Search for GRUB2 configuration on external media [s]' --hotkey='s' {
search_grub usb
}
if [ -f (cbfsdisk)/seabios.elf ]; then
menuentry 'Load SeaBIOS (payload) [b]' --hotkey='b' {
set root='cbfsdisk'
chainloader /seabios.elf
}
fi
if [ -f (cbfsdisk)/img/grub2 ]; then
menuentry 'Return to SeaBIOS [b]' --hotkey='b' {
set root='cbfsdisk'
chainloader /fallback/payload
}
fi
menuentry 'Poweroff [p]' --hotkey='p' {
halt
}
menuentry 'Reboot [r]' --hotkey='r' {
reboot
}
if [ -f (cbfsdisk)/img/memtest ]; then
menuentry 'Load MemTest86+ [m]' --hotkey='m' {
set root='cbfsdisk'
chainloader /img/memtest
}
fi
|
