aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/ixp4xx/base-files/lib/upgrade/platform.sh
blob: 508a167419edf1a405b23d9ae15d4c5575a9ad47 (plain)
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
. /lib/ixp4xx.sh

RAMFS_COPY_DATA="/lib/ixp4xx.sh"

CI_BLKSZ=65536
CI_LDADR=0x00800000

platform_find_partitions() {
	local first dev size erasesize name
	while read dev size erasesize name; do
		name=${name#'"'}; name=${name%'"'}
		case "$name" in
			vmlinux.bin.l7|kernel|linux|rootfs)
				if [ -z "$first" ]; then
					first="$name"
				else
					echo "$erasesize:$first:$name"
					break
				fi
			;;
		esac
	done < /proc/mtd
}

platform_find_kernelpart() {
	local part
	for part in "${1%:*}" "${1#*:}"; do
		case "$part" in
			vmlinux.bin.l7|kernel|linux)
				echo "$part"
				break
			;;
		esac
	done
}

platform_find_part_size() {
	local first dev size erasesize name
	while read dev size erasesize name; do
		name=${name#'"'}; name=${name%'"'}
		[ "$name" = "$1" ] && {
			echo "$size"
			break
		}
	done < /proc/mtd
}

platform_do_upgrade_combined() {
	local partitions=$(platform_find_partitions)
	local kernelpart=$(platform_find_kernelpart "${partitions#*:}")
	local erase_size=$((0x${partitions%%:*})); partitions="${partitions#*:}"
	local kern_part_size=0x$(platform_find_part_size "$kernelpart")
	local kern_part_blocks=$(($kern_part_size / $CI_BLKSZ))
	local kern_length=0x$(dd if="$1" bs=2 skip=1 count=4 2>/dev/null)
	local kern_blocks=$(($kern_length / $CI_BLKSZ))
	local root_blocks=$((0x$(dd if="$1" bs=2 skip=5 count=4 2>/dev/null) / $CI_BLKSZ))

	v "platform_do_upgrade_combined"
	v "partitions=$partitions"
	v "kernelpart=$kernelpart"
	v "kernel_part_size=$kern_part_size"
	v "kernel_part_blocks=$kern_part_blocks"
	v "kern_length=$kern_length"
	v "erase_size=$erase_size"
	v "kern_blocks=$kern_blocks"
	v "root_blocks=$root_blocks"
	v "kern_pad_blocks=$(($kern_part_blocks-$kern_blocks))"

	if [ -n "$partitions" ] && [ -n "$kernelpart" ] && \
	   [ ${kern_blocks:-0} -gt 0 ] && \
	   [ ${root_blocks:-0} -gt 0 ] && \
	   [ ${erase_size:-0} -gt 0 ];
	then
		local append=""
		[ -f "$CONF_TAR" -a "$SAVE_CONFIG" -eq 1 ] && append="-j $CONF_TAR"

		# write the kernel
		dd if="$1" bs=$CI_BLKSZ skip=1 count=$kern_blocks 2>/dev/null | \
			mtd -F$kernelpart:$kern_part_size:$CI_LDADR write - $kernelpart
		# write the rootfs
		dd if="$1" bs=$CI_BLKSZ skip=$((1+$kern_blocks)) count=$root_blocks 2>/dev/null | \
			mtd $append write - rootfs
	else
		echo "invalid image"
	fi
}

platform_check_image() {
	local board=$(ixp4xx_board_name)
	local magic="$(get_magic_word "$1")"
	local partitions=$(platform_find_partitions)
	local kernelpart=$(platform_find_kernelpart "${partitions#*:}")
	local kern_part_size=0x$(platform_find_part_size "$kernelpart")
	local kern_length=0x$(dd if="$1" bs=2 skip=1 count=4 2>/dev/null)

	[ "$#" -gt 1 ] && return 1

	case "$board" in
	avila | cambria )
		[ "$magic" != "4349" ] && {
			echo "Invalid image. Use *-sysupgrade.bin files on this board"
			return 1
		}

		kern_length_b=$(printf '%d' $kern_length)
		kern_part_size_b=$(printf '%d' $kern_part_size)
		if [ $kern_length_b -gt $kern_part_size_b ]; then
			echo "Invalid image. Kernel size ($kern_length) exceeds kernel partition ($kern_part_size)"
			return 1
		fi

		local md5_img=$(dd if="$1" bs=2 skip=9 count=16 2>/dev/null)
		local md5_chk=$(dd if="$1" bs=$CI_BLKSZ skip=1 2>/dev/null | md5sum -); md5_chk="${md5_chk%% *}"
		if [ -n "$md5_img" -a -n "$md5_chk" ] && [ "$md5_img" = "$md5_chk" ]; then
			return 0
		else
			echo "Invalid image. Contents do not match checksum (image:$md5_img calculated:$md5_chk)"
			return 1
		fi

		return 0
		;;
	esac

	echo "Sysupgrade is not yet supported on $board."
	return 1
}

platform_do_upgrade() {
	local board=$(ixp4xx_board_name)

	v "board=$board"
	case "$board" in
	avila | cambria )
		platform_do_upgrade_combined "$ARGV"
		;;
	*)
		default_do_upgrade "$ARGV"
		;;
	esac
}

disable_watchdog() {
	v "killing watchdog"
	killall watchdog
	( ps | grep -v 'grep' | grep '/dev/watchdog' ) && {
		echo 'Could not disable watchdog'
		return 1
	}
}

# CONFIG_WATCHDOG_NOWAYOUT=y - can't kill watchdog unless kernel cmdline has a mpcore_wdt.nowayout=0
#append sysupgrade_pre_upgrade disable_watchdog