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authorJohn Crispin <john@openwrt.org>2014-03-30 09:16:52 +0000
committerJohn Crispin <john@openwrt.org>2014-03-30 09:16:52 +0000
commit42e8cb6388a7f9bfd8ff820a5af9193e8fb67fa8 (patch)
treefa57ef5fc6bca28bd0487ffadbc635f4712dd3b3
parent1966d4942c2d91b225ddb820e6be01b9b1dc9652 (diff)
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lantiq: do an endianness swap to the RT2860 eeprom for ARV752DPW(22)
ARV7510PW22, ARV752DPW and ARV752DPW22 have the RT2860 eeprom stored in flash as big-endian, but the driver needs it in little-endian format. We have to swab it before handing it over. This requires my earlier patch for busybox. Funnily enough, ARV752DPW works also with the incorrect eeprom, but undoubtedly unoptimally. I have a hunch that also the final remaining Lantiq board would require this swabbing, but I'm not sure, so I just swab it in the three boards that I know about. v2: * Swab also on ARV7510PW22 based on feedback from Alvaro Rojas * Fix the offset with bs=2 Signed-off-by: Matti Laakso <malaakso at elisanet.fi> SVN-Revision: 40328
-rw-r--r--target/linux/lantiq/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom17
1 files changed, 13 insertions, 4 deletions
diff --git a/target/linux/lantiq/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom b/target/linux/lantiq/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom
index a849584..427c5fc 100644
--- a/target/linux/lantiq/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom
+++ b/target/linux/lantiq/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom
@@ -10,6 +10,7 @@ rt2x00_eeprom_extract() {
local part=$1
local offset=$2
local count=$3
+ local swab=$4
local mtd
. /lib/functions.sh
@@ -18,8 +19,13 @@ rt2x00_eeprom_extract() {
[ -n "$mtd" ] || \
rt2x00_eeprom_die "no mtd device found for partition $part"
- dd if=$mtd of=/lib/firmware/$FIRMWARE bs=1 skip=$offset count=$count || \
- rt2x00_eeprom_die "failed to extract from $mtd"
+ if [ $swab -gt 0 ]; then
+ dd if=$mtd of=/lib/firmware/$FIRMWARE bs=2 skip=$offset count=$count conv=swab || \
+ rt2x00_eeprom_die "failed to extract from $mtd"
+ else
+ dd if=$mtd of=/lib/firmware/$FIRMWARE bs=1 skip=$offset count=$count || \
+ rt2x00_eeprom_die "failed to extract from $mtd"
+ fi
}
[ -e /lib/firmware/$FIRMWARE ] && exit 0
@@ -29,8 +35,11 @@ case "$FIRMWARE" in
"RT2860.eeprom" )
local board=$(lantiq_board_id)
case $board in
- ARV7510PW22|ARV7519PW|ARV7525PW|ARV752DPW|ARV752DPW22)
- rt2x00_eeprom_extract "board_config" 1040 512
+ ARV7510PW22|ARV7519PW|ARV752DPW|ARV752DPW22)
+ rt2x00_eeprom_extract "board_config" 520 256 1
+ ;;
+ ARV7525PW)
+ rt2x00_eeprom_extract "board_config" 1040 512 0
;;
*)
rt2x00_eeprom_die "board $board is not supported yet"