looks good, i split the nand id patch out into its own commit and did a
test build. wont be near mt7621 HW till later today but i am assuming
its all fine now

thanks !



On 12/12/2015 07:45, Nikolay Martynov wrote:
> This router is based on MT7621 SoC, no wifi, no usb, 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.
> * PoE out.
> 
> 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 a factory partition.
> U-boot has custom 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.
> 
> Signed-off-by: Nikolay Martynov <[email protected]>
> ---
> This patch has been updated from its original to include comments
> from Yousong Zhou and Piotr Dymacz
> ---
>  .../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 |  76 +++++++++++++
>  target/linux/ramips/dts/UBNT-ERX.dts               | 119 
> +++++++++++++++++++++
>  target/linux/ramips/image/Makefile                 |  61 ++++++++++-
>  target/linux/ramips/mt7621/profiles/ubnt.mk        |  17 +++
>  .../patches-4.3/0901-spansion_nand_id_fix.patch    |  43 ++++++++
>  8 files changed, 344 insertions(+), 2 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-4.3/0901-spansion_nand_id_fix.patch
> 
> 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 a55c9eb..719e968 100755
> --- a/target/linux/ramips/base-files/etc/board.d/02_network
> +++ b/target/linux/ramips/base-files/etc/board.d/02_network
> @@ -114,6 +114,7 @@ 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 c002b97..62be045 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"
>               ;;
> @@ -399,7 +402,7 @@ 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 4ec3008..f8073d1 100755
> --- a/target/linux/ramips/base-files/lib/upgrade/platform.sh
> +++ b/target/linux/ramips/base-files/lib/upgrade/platform.sh
> @@ -182,12 +182,36 @@ 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..316a704
> --- /dev/null
> +++ b/target/linux/ramips/base-files/lib/upgrade/ubnt.sh
> @@ -0,0 +1,76 @@
> +#
> +# Copyright (C) 2015 OpenWrt.org
> +#
> +
> +. /lib/functions.sh
> +#Note: this code also uses some functions from nand.sh, but it is expected 
> to be run by nand.sh, so we are not
> +#sourcing it explicitly here
> +
> +UBNT_ERX_KERNEL_INDEX_OFFSET=160
> +
> +ubnt_get_target_kernel() {
> +     local factory_mtd=$1
> +     local current_kernel_index=$(hexdump -s $UBNT_ERX_KERNEL_INDEX_OFFSET 
> -n 1 -e '/1 "%X "' ${factory_mtd})
> +
> +     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' >&2
> +             return 1
> +     fi
> +
> +     if ! (echo -e $new_kernel_index | dd of=${factory_mtd} bs=1 count=1 
> seek=$UBNT_ERX_KERNEL_INDEX_OFFSET); then
> +             echo 'Failed to update kernel bootup index' >&2
> +             return 1
> +     fi
> +}
> +
> +platform_upgrade_ubnt_erx() {
> +     local factory_mtd=$(find_mtd_part factory)
> +     if [ -z "$factory_mtd" ]; then
> +             echo "cannot find factory partition" >&2
> +             exit 1
> +     fi
> +
> +     local kernel_part="$(ubnt_get_target_kernel ${factory_mtd})"
> +     if [ -z "$kernel_part" ]; then
> +             echo "cannot find factory partition" >&2
> +             exit 1
> +     fi
> +
> +     # This is a global defined in nand.sh, sets partition kernel will be 
> flashed into
> +     CI_KERNPART=${kernel_part}
> +
> +     #Remove volume possibly left over from stock firmware
> +     local ubidev="$( nand_find_ubi "$CI_UBIPART" )"
> +     if [ -z "$ubidev" ]; then
> +             local mtdnum="$( find_mtd_index "$CI_UBIPART" )"
> +             if [ -z "$mtdnum" ]; then
> +                     echo "cannot find ubi mtd partition $CI_UBIPART" >&2
> +                     exit 1
> +             fi
> +             ubiattach -m "$mtdnum"
> +             sync
> +             ubidev="$( nand_find_ubi "$CI_UBIPART" )"
> +     fi
> +     if [ -n "$ubidev" ]; then
> +             local troot_ubivol="$( nand_find_volume $ubidev troot )"
> +             [ -n "$troot_ubivol" ] && ubirmvol /dev/$ubidev -N troot || true
> +     fi
> +
> +     ubnt_update_target_kernel ${factory_mtd} ${kernel_part} || exit 1
> +}
> diff --git a/target/linux/ramips/dts/UBNT-ERX.dts 
> b/target/linux/ramips/dts/UBNT-ERX.dts
> new file mode 100644
> index 0000000..0014ac7
> --- /dev/null
> +++ b/target/linux/ramips/dts/UBNT-ERX.dts
> @@ -0,0 +1,119 @@
> +#include <dt-bindings/input/input.h>
> +
> +/dts-v1/;
> +
> +#include "mt7621.dtsi"
> +
> +/ {
> +     compatible = "mediatek,mt7621-eval-board", "mediatek,mt7621-soc";
> +     model = "UBNT-ERX";
> +
> +     memory@0 {
> +             device_type = "memory";
> +             reg = <0x0 0x10000000>;
> +     };
> +
> +     chosen {
> +             bootargs = "console=ttyS0,57600";
> +     };
> +
> +     palmbus@1E000000 {
> +             spi@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 does't handle this sharing well */
> +                     status = "disabled";
> +                     m25p80@0 {
> +                             #address-cells = <1>;
> +                             #size-cells = <1>;
> +                             compatible = "m25p80";
> +                             reg = <1>;
> +                             linux,modalias = "m25p80";
> +                             spi-max-frequency = <10000000>;
> +
> +                             partition@0 {
> +                                     label = "spi";
> +                                     reg = <0x0 0x200000>;
> +                                     read-only;
> +                             };
> +                     };
> +             };
> +     };
> +
> +     nand@1e003000 {
> +             compatible = "mtk,mt7621-nand";
> +             bank-width = <2>;
> +             reg = <0x1e003000 0x800
> +                    0x1e003800 0x800>;
> +             #address-cells = <1>;
> +             #size-cells = <1>;
> +
> +             partition@0 {
> +                     label = "u-boot";
> +                     reg = <0x0 0x80000>;
> +                     read-only;
> +             };
> +
> +             partition@80000 {
> +                     label = "u-boot-env";
> +                     reg = <0x80000 0x60000>;
> +                     read-only;
> +             };
> +
> +             factory: partition@e0000 {
> +                     label = "factory";
> +                     reg = <0xe0000 0x60000>;
> +             };
> +
> +             partition@140000 {
> +                     label = "kernel1";
> +                     reg = <0x140000 0x300000>;
> +             };
> +
> +             partition@440000 {
> +                     label = "kernel2";
> +                     reg = <0x440000 0x300000>;
> +             };
> +
> +             partition@740000 {
> +                     label = "ubi";
> +                     reg = <0x740000 0xf7c0000>;
> +             };
> +
> +     };
> +
> +     ethernet@1e100000 {
> +             mtd-mac-address = <&factory 0x22>;
> +     };
> +
> +     pinctrl {
> +             state_default: pinctrl0 {
> +                     gpio {
> +                             ralink,group = "uart2", "uart3", "i2c", "pcie", 
> "rgmii2", "jtag";
> +                             ralink,function = "gpio";
> +                     };
> +             };
> +     };
> +
> +     sdhci@1E130000 {
> +             status = "disabled";
> +     };
> +
> +     pcie@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 = <KEY_RESTART>;
> +             };
> +     };
> +};
> diff --git a/target/linux/ramips/image/Makefile 
> b/target/linux/ramips/image/Makefile
> index 63d6222..1b12249 100644
> --- a/target/linux/ramips/image/Makefile
> +++ b/target/linux/ramips/image/Makefile
> @@ -69,6 +69,51 @@ define Build/relocate-kernel
>       mv [email protected] $@
>  endef
>  
> +define Build/ubnt-erx-factory-compat
> +     echo '21001:6' > [email protected]
> +     $(TAR) -cf $@ --transform='s/^.*/compat/' [email protected]
> +     $(RM) [email protected]
> +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 $$1}'> [email protected]; \
> +             $(TAR) -rf $@ --transform='s/^.*/vmlinux.tmp.md5/' [email protected]; \
> +             $(RM) [email protected]; \
> +     fi
> +endef
> +
> +define Build/ubnt-erx-factory-rootfs
> +     echo "dummy" > [email protected]
> +     $(TAR) -rf $@ --transform='s/^.*/squashfs.tmp/' [email protected]
> +
> +     md5sum --binary [email protected] | awk '{print $$1}'> [email protected]
> +     $(TAR) -rf $@ --transform='s/^.*/squashfs.tmp.md5/' [email protected]
> +     $(RM) [email protected]
> +     $(RM) [email protected]
> +endef
> +
> +define Build/ubnt-erx-factory-version
> +     echo '$(BOARD) $(VERSION_CODE) $(VERSION_NUMBER)' > [email protected]
> +     $(TAR) -rf $@ --transform='s/^.*/version.tmp/' [email protected]
> +     $(RM) [email protected]
> +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 witi wf-2881 zbt-wg2626
> +  TARGET_DEVICES += mt7621 wsr-600 wsr-1166 dir-860l-b1 firewrt pbr-m1 
> re6500 sap-g3200u3 ubnt-erx witi wf-2881 zbt-wg2626
>  endif
>  
>  define Device/mt7621
> @@ -1023,6 +1068,20 @@ 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..b66b206
> --- /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 -usb
> +     PACKAGES:=-kmod-mt76 -wpad-mini -kmod-cfg80211
> +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-4.3/0901-spansion_nand_id_fix.patch 
> b/target/linux/ramips/patches-4.3/0901-spansion_nand_id_fix.patch
> new file mode 100644
> index 0000000..bb95461
> --- /dev/null
> +++ b/target/linux/ramips/patches-4.3/0901-spansion_nand_id_fix.patch
> @@ -0,0 +1,43 @@
> +From 8b61a1a33e41456ebeafa0ebe7ec0fccf859861e Mon Sep 17 00:00:00 2001
> +From: Nikolay Martynov <[email protected]>
> +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 <[email protected]>
> +---
> + 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
> +@@ -3422,6 +3422,7 @@ 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)
> +      *
> +@@ -3519,6 +3520,19 @@ 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:
> 
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