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
|
set prefix=(memdisk)/boot/grub
insmod nativedisk
insmod ehci
insmod ohci
insmod uhci
insmod usb
insmod usbms
insmod usbserial_pl2303
insmod usbserial_ftdi
insmod usbserial_usbdebug
# Serial and keyboard configuration, very important.
serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1
terminal_input --append serial
terminal_output --append serial
terminal_input --append at_keyboard
terminal_output --append cbmemc
gfxpayload=keep
terminal_output --append gfxterm
# Default to first option, automatically boot after 1 second
set default="0"
set timeout=1
# This is useful when using 'cat' on long files on GRUB terminal
set pager=1
function try_user_config {
set root="${1}"
for dir in boot grub grub2 boot/grub boot/grub2; do
for name in libreboot_ autoboot_ librecore_ coreboot_ ''; do
if [ -f /"${dir}"/"${name}"grub.cfg ]; then
unset superusers
configfile /"${dir}"/"${name}"grub.cfg
fi
done
done
}
function search_grub {
for i in 0 1; do
# raw devices
try_user_config "(${1}${i})"
for part in 1 2 3 4 5; do
# MBR/GPT partitions
try_user_config "(${1}${i},${part})"
done
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 "${dir}"/syslinux/syslinux.cfg
fi
done
}
function search_isolinux {
for i in 0 1; do
# raw devices
try_isolinux_config "(${1}${i})"
for part in 1 2 3 4 5; do
# MBR/GPT partitions
try_isolinux_config "(${1}${i},${part})"
done
done
}
menuentry 'Load Operating System (incl. fully encrypted disks) [o]' --hotkey='o' {
# GRUB2 handles (almost) every possible disk setup, but only the location of
# /boot is actually important since GRUB2 only loads the user's config.
# LVM, RAID, filesystems and encryption on both raw devices and partitions in
# all various combinations need to be supported. Since full disk encryption is
# possible with GRUB2 as payload and probably even used by most users, this
# configuration tries to load the operating system in the following way:
# 1. Look for user configuration on unencrypted devices first to avoid
# unnecessary decryption routines in the following order:
# 1) raw devices and MBR/GPT partitions
search_grub ahci
search_grub ata
# 2) LVM and RAID which might be used accross multiple devices
lvm="lvm/matrix-rootvol lvm/matrix-boot"
raid="md/0 md/1 md/2 md/3 md/4 md/5 md/6 md/7 md/8 md/9"
for vol in ${lvm} ${raid}; do
try_user_config "(${vol})"
done
# 2. In case no configuration could be found, try decrypting devices. Look
# on raw crypto devices as well as inside LVM volumes this time.
# The user will be prompted for a passphrase if a LUKS header was found.
for dev in ahci0 ata0 usb0 ${lvm}; do
cryptomount "(${dev})"
done
# 3) encrypted devices/partitions
for i in 0 1; do
for part in 1 2 3 4 5; do
for type in ahci ata; do
cryptomount "(${type}${i},${part})"
done
done
done
# 3) encrypted devices/partitions
search_grub crypto
# 4) LVM inside LUKS containers
for vol in ${lvm}; do
try_user_config "(${vol})"
done
# 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 ${p}initrd.img
fi
fi
done
# Last resort (for GA-G41-ES2L which uses IDE emulation mode for SATA)
set root=ata0,1
for p in / /boot/; do
if [ -f "${p}vmlinuz" ]; then
linux ${p}vmlinuz root=/dev/sda1 rw
if [ -f "${p}initrd.img" ]; then
initrd ${p}initrd.img
fi
fi
done
}
menuentry 'Search ISOLINUX menu (AHCI) [a]' --hotkey='a' {
search_isolinux ahci
}
menuentry 'Search ISOLINUX menu (USB) [u]' --hotkey='u' {
search_isolinux usb
}
menuentry 'Search ISOLINUX menu (CD/DVD) [d]' --hotkey='d' {
insmod ata
for dev in ata0 ata1 ata2 ata3 ahci1; do
try_isolinux_config "(${dev})"
done
}
menuentry 'Load standard configuration (grub.cfg) inside of CBFS [t]' --hotkey='t' {
set root='(cbfsdisk)'
configfile /grub.cfg
}
menuentry 'Search for GRUB2 configuration on external media [s]' --hotkey='s' {
search_grub usb
}
menuentry 'Load MemTest86+ [m]' --hotkey='m' {
linux16 (cbfsdisk)/memtest.bin
}
menuentry 'Poweroff [p]' --hotkey='p' {
halt
}
menuentry 'Reboot [r]' --hotkey='r' {
reboot
}
|
