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authorAdrian Schmutzler <freifunk@adrianschmutzler.de>2019-09-22 11:57:14 +0200
committerDavid Bauer <mail@david-bauer.net>2019-10-14 12:36:02 +0200
commit2c60de0e3f8cbe088fe8e495697cb9e98380710d (patch)
treea632a507208870d4b589dd7ee63d184ba6e2d0f3 /package/base-files/files/lib/functions
parent5b6a80909280cafcb1e28ca120eed6922d68dc5a (diff)
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treewide: move MAC address patch functions to common library
This unifies MAC address patch functions and moves them to a common script. While those were implemented differently for different targets, they all seem to do the same. The number of different variants is significantly reduced by this patch. Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Diffstat (limited to 'package/base-files/files/lib/functions')
-rw-r--r--package/base-files/files/lib/functions/caldata.sh59
1 files changed, 59 insertions, 0 deletions
diff --git a/package/base-files/files/lib/functions/caldata.sh b/package/base-files/files/lib/functions/caldata.sh
index f2a306675f..004bcfa990 100644
--- a/package/base-files/files/lib/functions/caldata.sh
+++ b/package/base-files/files/lib/functions/caldata.sh
@@ -73,3 +73,62 @@ caldata_valid() {
return $?
}
+caldata_patch_chksum() {
+ local mac=$1
+ local mac_offset=$(($2))
+ local chksum_offset=$(($3))
+ local xor_mac
+ local xor_fw_mac
+ local xor_fw_chksum
+
+ xor_mac=${mac//:/}
+ xor_mac="${xor_mac:0:4} ${xor_mac:4:4} ${xor_mac:8:4}"
+
+ xor_fw_mac=$(hexdump -v -n 6 -s $mac_offset -e '/1 "%02x"' /lib/firmware/$FIRMWARE)
+ xor_fw_mac="${xor_fw_mac:0:4} ${xor_fw_mac:4:4} ${xor_fw_mac:8:4}"
+
+ xor_fw_chksum=$(hexdump -v -n 2 -s $chksum_offset -e '/1 "%02x"' /lib/firmware/$FIRMWARE)
+ xor_fw_chksum=$(xor $xor_fw_chksum $xor_fw_mac $xor_mac)
+
+ printf "%b" "\x${xor_fw_chksum:0:2}\x${xor_fw_chksum:2:2}" | \
+ dd of=/lib/firmware/$FIRMWARE conv=notrunc bs=1 seek=$chksum_offset count=2
+}
+
+caldata_patch_mac() {
+ local mac=$1
+ local mac_offset=$(($2))
+ local chksum_offset=$3
+
+ [ -z "$mac" -o -z "$mac_offset" ] && return
+
+ [ -n "$chksum_offset" ] && caldata_patch_chksum "$mac" "$mac_offset" "$chksum_offset"
+
+ macaddr_2bin $mac | dd of=/lib/firmware/$FIRMWARE conv=notrunc oflag=seek_bytes bs=6 seek=$mac_offset count=1 || \
+ caldata_die "failed to write MAC address to eeprom file"
+}
+
+ath9k_patch_mac() {
+ local mac=$1
+
+ caldata_patch_mac "$mac" 0x2
+}
+
+ath9k_patch_mac_crc() {
+ local mac=$1
+ local mac_offset=$2
+ local chksum_offset=$((mac_offset - 10))
+
+ caldata_patch_mac "$mac" "$mac_offset" "$chksum_offset"
+}
+
+ath10kcal_patch_mac() {
+ local mac=$1
+
+ caldata_patch_mac "$mac" 0x6
+}
+
+ath10kcal_patch_mac_crc() {
+ local mac=$1
+
+ caldata_patch_mac "$mac" 0x6 0x2
+}