[OpenWrt-Devel] [PATCH v5] Add support for Ubiquiti EdgeRouter X (UBNT-ERX)

Nikolay Martynov mar.kolya at gmail.com
Thu Dec 10 14:52:48 EST 2015


Hi, John.

  It looks like 4.3 has just landed for this platform and this patch
probably will not apply. Should I resubmit it?

  I was also playing with 4.3 (and 4.4) on this platform and I have
some patches that would make it use CPS multiprocessing (instead of
MIPS CMP which is obsolete). Would you be interested in these?

Thanks.


2015-12-10 3:29 GMT-05:00 John Crispin <blogic at openwrt.org>:
> it is the correct list, just been real busy this week with other stuff.
> i'll be merging stuff again as of the weekend, sorry for the delay.
>
> On 09/12/2015 16:34, Nikolay Martynov wrote:
>> Hi.
>>
>>   I know you guys a probably very busy, but could you please confirm
>> that this is the right list to submit such patches and format of this
>> patch is correct - so I could fix it if it's not.
>>
>> Thanks!
>>
>> 2015-12-03 2:16 GMT-05:00 Nikolay Martynov <mar.kolya at gmail.com>:
>>> This router is based on MT7621 SoC, no wifi, nand.
>>>
>>> Works:
>>> * Boots.
>>> * Ethernet.
>>> * Switch.
>>> * Button (reset).
>>> * Flashing OpenWrt from stock firmware.
>>> * Upgrading OpenWrt.
>>>
>>> Doesn't work:
>>> * No GPIO leds. All leds are controlled by switch,
>>>   but stock firmware was able to control them.
>>> * SoC has crypto engine but no open driver.
>>> * SoC has nat acceleration, but no open driver.
>>> * This router has 2MB spi flash soldered in but MT
>>>   nand/spi drivers do not support pin sharing,
>>>   so it is not accessable and disabled. Stock
>>>   firmware could read it and it was empty.
>>>
>>> Unknown status: PoE support.
>>>
>>> Router has serial pins populated. If looking at the top
>>> of the router, then counting from Eth sockets pins go as:
>>> 'GND, RX, TX, GND'. 3.3v, 57600.
>>>
>>> U-boot bootloader supports tftpboot, controlled from serial.
>>> This router has two kernel partitions: 'live' and 'backup'.
>>> They are swapped during flashing (on both stock and OpenWrt).
>>> Active partition is controlled by a flag in factory partition.
>>> U-boot has cusotm command to switch active kernel partition.
>>> Kernel partitions are 'bare flash' 3MB. Stock bootloader has
>>> no UBI support. Stock rootfs is UBIFS.
>>>
>>> Flashing procedure.
>>> Stock firmware uses custom kernel patch to mount squashfs
>>> from a file that is located on UBIFS volume. This makes wiping
>>> out this volume from within stock firmware difficult.
>>> Instead this patch builds image that is flashable by stock firmware
>>> and contains initrams image (with minimal set of packages
>>> to fit into kernel partition). Once this is flashed one can reboot
>>> into initramfs OpenWrt and use sysupgrade to flash OpenWrt including
>>> rootfs into nand.
>>> Note: factory image is only built if initramfs image is enabled.
>>>
>>> v2: Fix building all mt7621 targets along with ubnt-erx.
>>> v3: Undo change to MT7621 nand partitions, make nand detection
>>>     less likely to affect other nands.
>>> v4: Update as per Piotr Dymacz comments.
>>> v5: Fix upgrading code to actually upgrade kernel.
>>>
>>> Signed-off-by: Nikolay Martynov <mar.kolya at gmail.com>
>>> ---
>>>  package/system/procd/files/nand.sh                 |   4 +
>>>  .../linux/ramips/base-files/etc/board.d/02_network |   1 +
>>>  target/linux/ramips/base-files/lib/ramips.sh       |   5 +-
>>>  .../ramips/base-files/lib/upgrade/platform.sh      |  24 +++++
>>>  target/linux/ramips/base-files/lib/upgrade/ubnt.sh |  71 +++++++++++++
>>>  target/linux/ramips/dts/MT7621.dts                 |  22 ++++
>>>  target/linux/ramips/dts/UBNT-ERX.dts               | 117 +++++++++++++++++++++
>>>  target/linux/ramips/dts/mt7621.dtsi                |  20 ----
>>>  target/linux/ramips/image/Makefile                 |  61 ++++++++++-
>>>  target/linux/ramips/mt7621/profiles/ubnt.mk        |  17 +++
>>>  .../patches-3.18/0901-spansion_nand_id_fix.patch   |  43 ++++++++
>>>  11 files changed, 363 insertions(+), 22 deletions(-)
>>>  create mode 100644 target/linux/ramips/base-files/lib/upgrade/ubnt.sh
>>>  create mode 100644 target/linux/ramips/dts/UBNT-ERX.dts
>>>  create mode 100644 target/linux/ramips/mt7621/profiles/ubnt.mk
>>>  create mode 100644 target/linux/ramips/patches-3.18/0901-spansion_nand_id_fix.patch
>>>
>>> diff --git a/package/system/procd/files/nand.sh b/package/system/procd/files/nand.sh
>>> index 0c179cb..67867da 100644
>>> --- a/package/system/procd/files/nand.sh
>>> +++ b/package/system/procd/files/nand.sh
>>> @@ -275,6 +275,10 @@ nand_upgrade_tar() {
>>>  nand_do_upgrade_stage2() {
>>>         local file_type=$(identify $1)
>>>
>>> +       if type 'platform_nand_pre_upgrade' >/dev/null 2>/dev/null; then
>>> +           platform_nand_pre_upgrade "$1"
>>> +       fi
>>> +
>>>         [ ! "$(find_mtd_index "$CI_UBIPART")" ] && CI_UBIPART="rootfs"
>>>
>>>         case "$file_type" in
>>> diff --git a/target/linux/ramips/base-files/etc/board.d/02_network b/target/linux/ramips/base-files/etc/board.d/02_network
>>> index 7e51229..de81553 100755
>>> --- a/target/linux/ramips/base-files/etc/board.d/02_network
>>> +++ b/target/linux/ramips/base-files/etc/board.d/02_network
>>> @@ -122,6 +122,7 @@ ramips_setup_interfaces()
>>>         f5d8235-v2|\
>>>         hg255d|\
>>>         rt-n14u|\
>>> +       ubnt-erx|\
>>>         ur-326n4g|\
>>>         wrtnode|\
>>>         wt3020|\
>>> diff --git a/target/linux/ramips/base-files/lib/ramips.sh b/target/linux/ramips/base-files/lib/ramips.sh
>>> index 92e13c0..ba23939 100755
>>> --- a/target/linux/ramips/base-files/lib/ramips.sh
>>> +++ b/target/linux/ramips/base-files/lib/ramips.sh
>>> @@ -349,6 +349,9 @@ ramips_board_detect() {
>>>         *"TEW-692GR")
>>>                 name="tew-692gr"
>>>                 ;;
>>> +       *"UBNT-ERX")
>>> +               name="ubnt-erx"
>>> +               ;;
>>>         *"UR-326N4G")
>>>                 name="ur-326n4g"
>>>                 ;;
>>> @@ -396,7 +399,7 @@ ramips_board_detect() {
>>>                 ;;
>>>         *"WizFi630A")
>>>                 name="wizfi630a"
>>> -               ;;
>>> +               ;;
>>>         *"WL-330N")
>>>                 name="wl-330n"
>>>                 ;;
>>> diff --git a/target/linux/ramips/base-files/lib/upgrade/platform.sh b/target/linux/ramips/base-files/lib/upgrade/platform.sh
>>> index 073593a..b0d624e 100755
>>> --- a/target/linux/ramips/base-files/lib/upgrade/platform.sh
>>> +++ b/target/linux/ramips/base-files/lib/upgrade/platform.sh
>>> @@ -181,12 +181,36 @@ platform_check_image() {
>>>                 }
>>>                 return 0
>>>                 ;;
>>> +       ubnt-erx)
>>> +               nand_do_platform_check "$board" "$1"
>>> +               return $?;
>>> +               ;;
>>>         esac
>>>
>>>         echo "Sysupgrade is not yet supported on $board."
>>>         return 1
>>>  }
>>>
>>> +platform_nand_pre_upgrade() {
>>> +       local board=$(ramips_board_name)
>>> +
>>> +       case "$board" in
>>> +       ubnt-erx)
>>> +               platform_upgrade_ubnt_erx "$ARGV"
>>> +               ;;
>>> +       esac
>>> +}
>>> +
>>> +platform_pre_upgrade() {
>>> +       local board=$(ramips_board_name)
>>> +
>>> +       case "$board" in
>>> +       ubnt-erx)
>>> +               nand_do_upgrade "$ARGV"
>>> +               ;;
>>> +       esac
>>> +}
>>> +
>>>  platform_do_upgrade() {
>>>         local board=$(ramips_board_name)
>>>
>>> diff --git a/target/linux/ramips/base-files/lib/upgrade/ubnt.sh b/target/linux/ramips/base-files/lib/upgrade/ubnt.sh
>>> new file mode 100644
>>> index 0000000..0dc602b
>>> --- /dev/null
>>> +++ b/target/linux/ramips/base-files/lib/upgrade/ubnt.sh
>>> @@ -0,0 +1,71 @@
>>> +#
>>> +# Copyright (C) 2015 OpenWrt.org
>>> +#
>>> +
>>> +UBNT_ERX_KERNEL_INDEX_OFFSET=160
>>> +
>>> +ubnt_get_target_kernel() {
>>> +        local factory_mtd=$1
>>> +        local current_kernel_index=$(dd if=${factory_mtd} bs=1 count=1 skip=$UBNT_ERX_KERNEL_INDEX_OFFSET 2>/dev/null|hexdump -e '/1 "%X "')
>>> +
>>> +       if [ $current_kernel_index == "0" ]; then
>>> +            echo 'kernel2'
>>> +       elif [ $current_kernel_index == "1" ]; then
>>> +            echo 'kernel1'
>>> +       fi
>>> +}
>>> +
>>> +ubnt_update_target_kernel() {
>>> +       local factory_mtd=$1
>>> +       local kernel_part=$2
>>> +
>>> +       local new_kernel_index
>>> +       if [ $kernel_part == "kernel1" ]; then
>>> +            new_kernel_index="\x00"
>>> +       elif [ $kernel_part == "kernel2" ]; then
>>> +            new_kernel_index="\x01"
>>> +       else
>>> +           echo 'Unknown kernel image index'
>>> +            exit 1
>>> +       fi
>>> +
>>> +       if ! (echo -e $new_kernel_index | dd of=${factory_mtd} bs=1 count=1 seek=$UBNT_ERX_KERNEL_INDEX_OFFSET); then
>>> +            echo 'Failed to update kernel bootup index'
>>> +            exit 1
>>> +       fi
>>> +}
>>> +
>>> +platform_upgrade_ubnt_erx() {
>>> +       local factory_mtd=$(find_mtd_part factory)
>>> +       if [ ! -n "$factory_mtd" ]; then
>>> +               echo "cannot find factory partition"
>>> +               exit 1
>>> +       fi
>>> +
>>> +       local kernel_part="$(ubnt_get_target_kernel ${factory_mtd})"
>>> +       if [ ! -n "$kernel_part" ]; then
>>> +               echo "cannot find factory partition"
>>> +               exit 1
>>> +       fi
>>> +
>>> +       CI_KERNPART=${kernel_part}
>>> +
>>> +       #Remove volume possibly left over from stock firmware
>>> +       local ubidev="$( nand_find_ubi "$CI_UBIPART" )"
>>> +       if [ ! "$ubidev" ]; then
>>> +               local mtdnum="$( find_mtd_index "$CI_UBIPART" )"
>>> +               if [ ! "$mtdnum" ]; then
>>> +                       echo "cannot find ubi mtd partition $CI_UBIPART"
>>> +                       return 1
>>> +               fi
>>> +               ubiattach -m "$mtdnum"
>>> +               sync
>>> +               ubidev="$( nand_find_ubi "$CI_UBIPART" )"
>>> +       fi
>>> +       if [ -n "$ubidev" ]; then
>>> +               local troot_ubivol="$( nand_find_volume $ubidev troot )"
>>> +               [ "$troot_ubivol" ] && ubirmvol /dev/$ubidev -N troot || true
>>> +       fi
>>> +
>>> +       ubnt_update_target_kernel ${factory_mtd} ${kernel_part}
>>> +}
>>> diff --git a/target/linux/ramips/dts/MT7621.dts b/target/linux/ramips/dts/MT7621.dts
>>> index c90fc95..96f3416 100644
>>> --- a/target/linux/ramips/dts/MT7621.dts
>>> +++ b/target/linux/ramips/dts/MT7621.dts
>>> @@ -31,4 +31,26 @@
>>>                         };
>>>                 };
>>>         };
>>> +
>>> +       nand at 1e003000 {
>>> +               partition at 0 {
>>> +                       label = "uboot";
>>> +                       reg = <0x00000 0x80000>; /* 64 KB */
>>> +               };
>>> +
>>> +               partition at 80000 {
>>> +                       label = "uboot_env";
>>> +                       reg = <0x80000 0x80000>; /* 64 KB */
>>> +               };
>>> +
>>> +               partition at 100000 {
>>> +                       label = "factory";
>>> +                       reg = <0x100000 0x40000>;
>>> +               };
>>> +
>>> +               partition at 140000 {
>>> +                       label = "rootfs";
>>> +                       reg = <0x140000 0xec0000>;
>>> +               };
>>> +       };
>>>  };
>>> diff --git a/target/linux/ramips/dts/UBNT-ERX.dts b/target/linux/ramips/dts/UBNT-ERX.dts
>>> new file mode 100644
>>> index 0000000..4aa3be9
>>> --- /dev/null
>>> +++ b/target/linux/ramips/dts/UBNT-ERX.dts
>>> @@ -0,0 +1,117 @@
>>> +/dts-v1/;
>>> +
>>> +/include/ "mt7621.dtsi"
>>> +
>>> +/ {
>>> +       compatible = "mediatek,mt7621-eval-board", "mediatek,mt7621-soc";
>>> +       model = "UBNT-ERX";
>>> +
>>> +       memory at 0 {
>>> +               device_type = "memory";
>>> +               reg = <0x0 0x10000000>;
>>> +       };
>>> +
>>> +       chosen {
>>> +               bootargs = "console=ttyS0,57600";
>>> +       };
>>> +
>>> +       palmbus at 1E000000 {
>>> +               spi at b00 {
>>> +                       /* This board has 2Mb spi flash soldered in and visible
>>> +                          from manufacturer's firmware.
>>> +                          But this SoC shares spi and nand pins,
>>> +                          and current driver desn't handle this sharing well */
>>> +                       status = "disabled";
>>> +                       m25p80 at 0 {
>>> +                               #address-cells = <1>;
>>> +                               #size-cells = <1>;
>>> +                               compatible = "m25p80";
>>> +                               reg = <1>;
>>> +                               linux,modalias = "m25p80";
>>> +                               spi-max-frequency = <10000000>;
>>> +
>>> +                               partition at 0 {
>>> +                                       label = "spi";
>>> +                                       reg = <0x0 0x200000>;
>>> +                                       read-only;
>>> +                               };
>>> +                       };
>>> +               };
>>> +       };
>>> +
>>> +       nand at 1e003000 {
>>> +               compatible = "mtk,mt7621-nand";
>>> +               bank-width = <2>;
>>> +               reg = <0x1e003000 0x800
>>> +                      0x1e003800 0x800>;
>>> +               #address-cells = <1>;
>>> +               #size-cells = <1>;
>>> +
>>> +               partition at 0 {
>>> +                       label = "u-boot";
>>> +                       reg = <0x0 0x80000>;
>>> +                       read-only;
>>> +               };
>>> +
>>> +               partition at 80000 {
>>> +                       label = "u-boot-env";
>>> +                       reg = <0x80000 0x60000>;
>>> +                       read-only;
>>> +               };
>>> +
>>> +               factory: partition at e0000 {
>>> +                       label = "factory";
>>> +                       reg = <0xe0000 0x60000>;
>>> +               };
>>> +
>>> +               partition at 140000 {
>>> +                       label = "kernel1";
>>> +                       reg = <0x140000 0x300000>;
>>> +               };
>>> +
>>> +               partition at 440000 {
>>> +                       label = "kernel2";
>>> +                       reg = <0x440000 0x300000>;
>>> +               };
>>> +
>>> +               partition at 740000 {
>>> +                       label = "ubi";
>>> +                       reg = <0x740000 0xf7c0000>;
>>> +               };
>>> +
>>> +       };
>>> +
>>> +       ethernet at 1e100000 {
>>> +               mtd-mac-address = <&factory 0x22>;
>>> +       };
>>> +
>>> +       pinctrl {
>>> +               state_default: pinctrl0 {
>>> +                       gpio {
>>> +                               ralink,group = "uart2", "uart3", "i2c", "pcie", "rgmii2", "jtag";
>>> +                               ralink,function = "gpio";
>>> +                       };
>>> +               };
>>> +       };
>>> +
>>> +       sdhci at 1E130000 {
>>> +               status = "disabled";
>>> +       };
>>> +
>>> +       pcie at 1e140000 {
>>> +               status = "disabled";
>>> +       };
>>> +
>>> +       gpio-keys-polled {
>>> +               compatible = "gpio-keys-polled";
>>> +               #address-cells = <1>;
>>> +               #size-cells = <0>;
>>> +               poll-interval = <20>;
>>> +
>>> +               reset {
>>> +                       label = "reset";
>>> +                       gpios = <&gpio0 12 1>;
>>> +                       linux,code = <0x198>;
>>> +               };
>>> +       };
>>> +};
>>> diff --git a/target/linux/ramips/dts/mt7621.dtsi b/target/linux/ramips/dts/mt7621.dtsi
>>> index fd2e100..c29a040 100644
>>> --- a/target/linux/ramips/dts/mt7621.dtsi
>>> +++ b/target/linux/ramips/dts/mt7621.dtsi
>>> @@ -241,26 +241,6 @@
>>>                         0x1e003800 0x800>;
>>>                 #address-cells = <1>;
>>>                 #size-cells = <1>;
>>> -
>>> -               partition at 0 {
>>> -                       label = "uboot";
>>> -                       reg = <0x00000 0x80000>; /* 64 KB */
>>> -               };
>>> -
>>> -               partition at 80000 {
>>> -                       label = "uboot_env";
>>> -                       reg = <0x80000 0x80000>; /* 64 KB */
>>> -               };
>>> -
>>> -               partition at 100000 {
>>> -                       label = "factory";
>>> -                       reg = <0x100000 0x40000>;
>>> -               };
>>> -
>>> -               partition at 140000 {
>>> -                       label = "rootfs";
>>> -                       reg = <0x140000 0xec0000>;
>>> -               };
>>>         };
>>>
>>>         ethernet at 1e100000 {
>>> diff --git a/target/linux/ramips/image/Makefile b/target/linux/ramips/image/Makefile
>>> index 00a2923..6230688 100644
>>> --- a/target/linux/ramips/image/Makefile
>>> +++ b/target/linux/ramips/image/Makefile
>>> @@ -69,6 +69,51 @@ define Build/relocate-kernel
>>>         mv $@.new $@
>>>  endef
>>>
>>> +define Build/ubnt-erx-factory-compat
>>> +       echo '21001:6' > $@.compat
>>> +       $(TAR) -cf $@ --transform='s/^.*/compat/' $@.compat
>>> +       $(RM) $@.compat
>>> +endef
>>> +
>>> +define Build/ubnt-erx-factory-kernel
>>> +       if [ -e $(BIN_DIR)/$(KERNEL_INITRAMFS_IMAGE) ]; then \
>>> +               $(TAR) -rf $@ --transform='s/^.*/vmlinux.tmp/' $(BIN_DIR)/$(KERNEL_INITRAMFS_IMAGE); \
>>> +               \
>>> +               md5sum --binary $(BIN_DIR)/$(KERNEL_INITRAMFS_IMAGE) | awk '{print $$1}'> $@.md5; \
>>> +               $(TAR) -rf $@ --transform='s/^.*/vmlinux.tmp.md5/' $@.md5; \
>>> +               $(RM) $@.md5; \
>>> +       fi
>>> +endef
>>> +
>>> +define Build/ubnt-erx-factory-rootfs
>>> +       echo "dummy" > $@.rootfs
>>> +       $(TAR) -rf $@ --transform='s/^.*/squashfs.tmp/' $@.rootfs
>>> +
>>> +       md5sum --binary $@.rootfs | awk '{print $$1}'> $@.md5
>>> +       $(TAR) -rf $@ --transform='s/^.*/squashfs.tmp.md5/' $@.md5
>>> +       $(RM) $@.md5
>>> +       $(RM) $@.rootfs
>>> +endef
>>> +
>>> +define Build/ubnt-erx-factory-version
>>> +       echo '$(BOARD) $(VERSION_CODE) $(VERSION_NUMBER)' > $@.version
>>> +       $(TAR) -rf $@ --transform='s/^.*/version.tmp/' $@.version
>>> +       $(RM) $@.version
>>> +endef
>>> +
>>> +#We need kernel+initrams fit into kernel partition
>>> +define Build/ubnt-erx-factory-check-size
>>> +       @[ $$(($(subst k,* 1024,$(subst m, * 1024k,$(1))))) -ge "$$($(TAR) -xf $@ vmlinux.tmp -O | wc -c)" ] || { \
>>> +               echo "WARNING: Initramfs kernel for image $@ is too big (kernel size: $$($(TAR) -xf $@ vmlinux.tmp -O | wc -c), max size $(1))" >&2; \
>>> +               $(RM) -f $@; \
>>> +       }
>>> +
>>> +       @[ "$$($(TAR) -xf $@ vmlinux.tmp -O | wc -c)" -gt 0 ] || { \
>>> +               echo "WARNING: Kernel for image $@ not found" >&2; \
>>> +               $(RM) -f $@; \
>>> +       }
>>> +endef
>>> +
>>>  define MkCombineduImage
>>>         $(call PatchKernelLzma,$(2),$(3))
>>>         if [ `stat -c%s "$(KDIR)/vmlinux-$(2).bin.lzma"` -gt `expr $(4) - 64` ]; then \
>>> @@ -954,7 +999,7 @@ endif
>>>  #
>>>
>>>  ifeq ($(SUBTARGET),mt7621)
>>> -  TARGET_DEVICES += mt7621 wsr-600 wsr-1166 dir-860l-b1 firewrt pbr-m1 re6500 sap-g3200u3 zbt-wg2626 wf-2881
>>> +  TARGET_DEVICES += mt7621 wsr-600 wsr-1166 dir-860l-b1 firewrt pbr-m1 re6500 sap-g3200u3 zbt-wg2626 wf-2881 ubnt-erx
>>>  endif
>>>
>>>  define Device/mt7621
>>> @@ -1018,6 +1063,20 @@ define Device/wf-2881
>>>    IMAGE/sysupgrade.bin := append-kernel | pad-to $$(KERNEL_SIZE) | append-ubi | check-size $$$$(IMAGE_SIZE)
>>>  endef
>>>
>>> +define Device/ubnt-erx
>>> +  DTS := UBNT-ERX
>>> +  FILESYSTEMS := squashfs
>>> +  KERNEL_SIZE := 3145728
>>> +  KERNEL := $(KERNEL_DTB) | uImage lzma
>>> +  IMAGES := sysupgrade.tar factory-initramfs.tar
>>> +  IMAGE/factory-initramfs.tar := ubnt-erx-factory-compat | \
>>> +                                ubnt-erx-factory-kernel | \
>>> +                                ubnt-erx-factory-rootfs | \
>>> +                                ubnt-erx-factory-version | \
>>> +                                ubnt-erx-factory-check-size $$$$(KERNEL_SIZE)
>>> +  IMAGE/sysupgrade.tar := sysupgrade-nand
>>> +endef
>>> +
>>>  #
>>>  # MT7628 Profiles
>>>  #
>>> diff --git a/target/linux/ramips/mt7621/profiles/ubnt.mk b/target/linux/ramips/mt7621/profiles/ubnt.mk
>>> new file mode 100644
>>> index 0000000..67efa60
>>> --- /dev/null
>>> +++ b/target/linux/ramips/mt7621/profiles/ubnt.mk
>>> @@ -0,0 +1,17 @@
>>> +#
>>> +# Copyright (C) 2015 OpenWrt.org
>>> +#
>>> +# This is free software, licensed under the GNU General Public License v2.
>>> +# See /LICENSE for more information.
>>> +#
>>> +
>>> +define Profile/UBNT-ERX
>>> +       NAME:=Ubiquiti EdgeRouter X
>>> +       FEATURES += nand
>>> +       PACKAGES:=-kmod-mt76 -wpad-mini
>>> +endef
>>> +
>>> +define Profile/UBNT-ERX/Description
>>> +       Package set compatible with the Ubiquiti EdgeRouter X
>>> +endef
>>> +$(eval $(call Profile,UBNT-ERX))
>>> diff --git a/target/linux/ramips/patches-3.18/0901-spansion_nand_id_fix.patch b/target/linux/ramips/patches-3.18/0901-spansion_nand_id_fix.patch
>>> new file mode 100644
>>> index 0000000..a327674
>>> --- /dev/null
>>> +++ b/target/linux/ramips/patches-3.18/0901-spansion_nand_id_fix.patch
>>> @@ -0,0 +1,43 @@
>>> +From 8b61a1a33e41456ebeafa0ebe7ec0fccf859861e Mon Sep 17 00:00:00 2001
>>> +From: Nikolay Martynov <mar.kolya at gmail.com>
>>> +Date: Wed, 25 Nov 2015 20:43:46 -0500
>>> +Subject: [PATCH] mtd: nand: Fix Spansion sparearea size detection
>>> +
>>> +According to datasheet S34ML02G2 and S34ML04G2 have
>>> +larger sparea area size than was detected.
>>> +
>>> +Signed-off-by: Nikolay Martynov <mar.kolya at gmail.com>
>>> +---
>>> + drivers/mtd/nand/nand_base.c | 9 +++++++++
>>> + 1 file changed, 9 insertions(+)
>>> +
>>> +--- a/drivers/mtd/nand/nand_base.c
>>> ++++ b/drivers/mtd/nand/nand_base.c
>>> +@@ -3399,6 +3399,7 @@ static void nand_decode_ext_id(struct mt
>>> +       /*
>>> +        * Field definitions are in the following datasheets:
>>> +        * Old style (4,5 byte ID): Samsung K9GAG08U0M (p.32)
>>> ++       *                          Spansion S34ML02G2 (p.33)
>>> +        * New Samsung (6 byte ID): Samsung K9GAG08U0F (p.44)
>>> +        * Hynix MLC   (6 byte ID): Hynix H27UBG8T2B (p.22)
>>> +        *
>>> +@@ -3496,6 +3497,19 @@ static void nand_decode_ext_id(struct mt
>>> +               *busw = (extid & 0x01) ? NAND_BUSWIDTH_16 : 0;
>>> +
>>> +               /*
>>> ++               * Spansion S34ML0[24]G2 have oobsize twice as large
>>> ++               * as S34ML01G2 encoded in the same bit. We
>>> ++               * differinciate them by their ID length
>>> ++               */
>>> ++              if (id_data[0] == NAND_MFR_AMD
>>> ++                              && (id_data[1] == 0xda
>>> ++                               || id_data[1] == 0xdc
>>> ++                               || id_data[1] == 0xca
>>> ++                               || id_data[1] == 0xcc)) {
>>> ++                      mtd->oobsize *= 2;
>>> ++              }
>>> ++
>>> ++              /*
>>> +                * Toshiba 24nm raw SLC (i.e., not BENAND) have 32B OOB per
>>> +                * 512B page. For Toshiba SLC, we decode the 5th/6th byte as
>>> +                * follows:
>>> --
>>> 2.6.3
>>>
>>
>>
>>



-- 
Martynov Nikolay.
Email: mar.kolya at gmail.com
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