Commit | Line | Data |
---|---|---|
be3fa5e6 | 1 | #!/bin/sh |
1d7b9c8a | 2 | |
be3fa5e6 | 3 | # |
1d7b9c8a | 4 | # initramfs /init (busybox ash) |
be3fa5e6 JB |
5 | # |
6 | ||
1d7b9c8a JB |
7 | # color codes and some predefined texts |
8 | BOLD="\033[1m" | |
9 | NORM="\033[0m" | |
10 | RED="\033[31m" | |
11 | GREEN="\033[32m" | |
12 | YELLOW="\033[33m" | |
13 | BLUE="\033[34m" | |
14 | OK="${BOLD}${GREEN}OK${NORM}" | |
15 | FAILED="${BOLD}${RED}FAILED${NORM}" | |
16 | ||
17 | # helper functions | |
18 | ||
19 | # check an exit value and print a colored status | |
20 | checkReturn() { | |
21 | if [ $? -ne 0 ] | |
22 | then | |
23 | echo -e $FAILED | |
24 | else | |
25 | echo -e $OK | |
26 | fi | |
27 | } | |
be3fa5e6 | 28 | |
1d7b9c8a JB |
29 | # search for and mount the crux media, populate a tmpfs from it, |
30 | # and prepare /newroot for switch_root at the end of the script | |
31 | find_and_mount_media() { | |
4357bb11 JB |
32 | echo -e -n " ${BOLD}${BLUE}*${NORM} Creating and mounting tmpfs... " |
33 | mkdir /.tmpfs | |
34 | mount -t tmpfs tmpfs /.tmpfs | |
35 | checkReturn | |
36 | ||
1d7b9c8a | 37 | echo -e " ${BOLD}${BLUE}*${NORM} Searching for the CRUX media..." |
4357bb11 | 38 | mkdir -p /.tmpfs/.media |
1d7b9c8a | 39 | CRUXMEDIA="" |
2cbc0e64 | 40 | CDROM_DEVICES="`grep 'drive name:' /proc/sys/dev/cdrom/info | awk '{ print $3 }'`" |
1d7b9c8a JB |
41 | MMC_DEVICES="`grep -E 'mmcblk' /proc/partitions | awk '{ print $4 }'`" |
42 | BLOCK_DEVICES="`grep -E '[sh]d' /proc/partitions | awk '{ print $4 }'`" | |
4357bb11 | 43 | for DEV in $CDROM_DEVICES $MMC_DEVICES $BLOCK_DEVICES |
1d7b9c8a JB |
44 | do |
45 | DEV="/dev/$DEV" | |
4357bb11 | 46 | mount -r $DEV /.tmpfs/.media 2> /dev/null |
1d7b9c8a | 47 | if [ $? -eq 0 ] |
4357bb11 | 48 | then |
1d7b9c8a | 49 | echo -e -n " ${BOLD}${GREEN}*${NORM} Found media on $DEV" |
4357bb11 | 50 | if [ -e /.tmpfs/.media/crux-media ] |
1d7b9c8a JB |
51 | then |
52 | echo ", CRUX media." | |
53 | CRUXMEDIA=$DEV | |
1d7b9c8a JB |
54 | break |
55 | else | |
56 | echo ", but it's not the CRUX media." | |
4357bb11 | 57 | umount /.tmpfs/.media |
1d7b9c8a JB |
58 | fi |
59 | else | |
60 | echo -e " ${BOLD}${YELLOW}*${NORM} No media found on $DEV." | |
61 | fi | |
62 | done | |
be3fa5e6 | 63 | |
1d7b9c8a | 64 | # check if the media was mounted properly. if not, spawn a shell |
4357bb11 | 65 | if [ ! -e /.tmpfs/.media/crux-media ] |
1d7b9c8a | 66 | then |
1d7b9c8a JB |
67 | echo -e " ${BOLD}${RED}*${NORM} The CRUX media was not properly mounted!" |
68 | echo " Spawning a shell for you to attempt to fix this problem. If" | |
69 | echo " you are able to find the correct device, mount it at" | |
4357bb11 | 70 | echo " /.tmpfs/.media and then log out of this shell to continue." |
1d7b9c8a JB |
71 | echo " If you are NOT able to fix the problem, installation will" |
72 | echo " not be possible." | |
73 | echo | |
74 | /bin/sh | |
75 | fi | |
be3fa5e6 | 76 | |
1d7b9c8a | 77 | # check again and stop if it's still not there |
4357bb11 | 78 | if [ ! -e /.tmpfs/.media/crux-media ] |
1d7b9c8a | 79 | then |
1d7b9c8a JB |
80 | echo -e " ${BOLD}${RED}*${NORM} The CRUX media still appears not to be" |
81 | echo " found and installation will not continue." | |
82 | echo | |
4357bb11 JB |
83 | sleep 99999 |
84 | exit 1 | |
1d7b9c8a | 85 | fi |
4357bb11 JB |
86 | |
87 | echo -e " ${BOLD}${BLUE}*${NORM} Populating root filesystem..." | |
88 | mkdir -p /newroot | |
89 | echo -e -n " ${BOLD}${BLUE}*${NORM} Mounting new root filesystem... " | |
90 | mount -t tmpfs tmpfs /newroot | |
91 | checkReturn | |
92 | echo -e -n " ${BOLD}${BLUE}*${NORM} Copying files from rootfs.tar.xz... " | |
93 | tar -xpf /.tmpfs/.media/rootfs.tar.xz -C /newroot | |
94 | checkReturn | |
95 | echo -e -n " ${BOLD}${BLUE}*${NORM} Copying devices from rootfs... " | |
2cbc0e64 | 96 | cp -af /dev/* /newroot/dev/ |
4357bb11 JB |
97 | checkReturn |
98 | mkdir -p /newroot/dev/pts /newroot/media | |
99 | ||
100 | # the media gets unmounted here and remounted after switch_root | |
101 | umount /.tmpfs/.media | |
102 | rmdir /.tmpfs/.media | |
103 | sed -i -e "s,#CRUXMEDIA#,${CRUXMEDIA}," /newroot/etc/fstab | |
104 | ||
105 | echo -e -n " ${BOLD}${BLUE}*${NORM} Unmounting tmpfs... " | |
106 | umount /.tmpfs | |
107 | checkReturn | |
108 | rmdir /.tmpfs | |
1d7b9c8a JB |
109 | } |
110 | ||
55f11ffe JB |
111 | /bin/busybox --install -s /bin |
112 | ||
1d7b9c8a | 113 | # main script |
be3fa5e6 | 114 | |
1d7b9c8a JB |
115 | echo "" |
116 | echo -e "${BOLD}CRUX-ARM 2.7.1 - ${BLUE}http://crux-arm.nu/${NORM}" | |
117 | echo "" | |
be3fa5e6 | 118 | |
1d7b9c8a JB |
119 | exec >/dev/console </dev/console 2>&1 |
120 | ||
55f11ffe JB |
121 | echo -e -n " ${BOLD}${BLUE}*${NORM} Mounting " |
122 | echo -e -n "${BOLD}${GREEN}/proc${NORM}" | |
123 | mount -t proc proc /proc | |
124 | ||
125 | PRINTK="`cat /proc/sys/kernel/printk`" | |
126 | echo "0" > /proc/sys/kernel/printk | |
127 | ||
128 | echo -e ", ${BOLD}${GREEN}/sys${NORM}." | |
129 | mount -t sysfs sysfs /sys | |
1d7b9c8a JB |
130 | |
131 | echo -e -n " ${BOLD}${BLUE}*${NORM} Populating /dev via mdev... " | |
132 | mdev -s | |
133 | checkReturn | |
2cbc0e64 | 134 | echo -e -n " ${BOLD}${BLUE}*${NORM} Registering mdev as hotplug agent... " |
be3fa5e6 | 135 | echo "/bin/mdev" > /proc/sys/kernel/hotplug |
1d7b9c8a JB |
136 | checkReturn |
137 | ||
4357bb11 JB |
138 | if [ -d /lib/modules ] |
139 | then | |
140 | echo -e -n " ${BOLD}${BLUE}*${NORM} Loading modules... " | |
141 | # TODO | |
142 | else | |
143 | echo -e " ${BOLD}${YELLOW}*${NORM} No modules were found in the initial RAM filesystem." | |
144 | fi | |
be3fa5e6 | 145 | |
55f11ffe JB |
146 | grep -q "devicetimeout=*" /proc/cmdline |
147 | if [ $? -eq 0 ] | |
148 | then | |
149 | for opt in `cat /proc/cmdline` | |
150 | do | |
151 | echo "$opt" | grep -q "devicetimeout=" | |
152 | if [ $? -eq 0 ] | |
153 | then | |
154 | DEVTIMEOUT=`echo $opt | cut -d'=' -f2` | |
155 | fi | |
156 | done | |
157 | else | |
158 | DEVTIMEOUT=10 | |
159 | fi | |
160 | echo -e " ${BOLD}${BLUE}*${NORM} Waiting $DEVTIMEOUT seconds for devices to settle..." | |
161 | sleep $DEVTIMEOUT | |
162 | ||
163 | # if root=/dev/XXX was specified on the command line, use that as the new root | |
2cbc0e64 JB |
164 | # instead of searching for the media and using it. if it fails, fall back to |
165 | # the media | |
55f11ffe JB |
166 | grep -q "root=/dev/*" /proc/cmdline |
167 | if [ $? -eq 0 ] | |
168 | then | |
169 | for opt in `cat /proc/cmdline` | |
170 | do | |
171 | echo "$opt" | grep -q "root=" | |
172 | if [ $? -eq 0 ] | |
173 | then | |
174 | ROOTDEV=`echo $opt | cut -d'=' -f2` | |
175 | fi | |
176 | done | |
177 | mkdir -p /newroot | |
178 | # check the specified root device to see if it has an init | |
179 | mount $ROOTDEV /newroot | |
180 | if [ $? -ne 0 ] | |
181 | then | |
182 | echo -e " ${BOLD}${RED}*${NORM} Unable to mount the specified root device! Falling back to the live media." | |
183 | find_and_mount_media | |
184 | else | |
185 | if [ -x /newroot/sbin/init ] | |
186 | then | |
187 | echo -e " ${BOLD}${BLUE}*${NORM} Mounted root device $ROOTDEV." | |
188 | else | |
189 | echo -e " ${BOLD}${RED}*${NORM} The specified root device ($ROOTDEV) does not appear to be usable! Falling back to the live media." | |
190 | umount /newroot | |
191 | find_and_mount_media | |
192 | fi | |
193 | fi | |
194 | else | |
195 | find_and_mount_media | |
196 | fi | |
197 | ||
2cbc0e64 | 198 | echo -e " ${BOLD}${BLUE}*${NORM} Switching root.\n" |
55f11ffe JB |
199 | echo "$PRINTK" > /proc/sys/kernel/printk |
200 | echo > /proc/sys/kernel/hotplug | |
201 | umount /sys | |
202 | umount /proc | |
203 | exec /bin/switch_root /newroot /sbin/init | |
204 | ||
205 | echo "Something's broken, here's a shell." | |
206 | exec /bin/sh | |
be3fa5e6 JB |
207 | |
208 | # End of file |