ipq40xx: add support for FritzBox 7530

Hardware
--------
CPU:   Qualcomm IPQ4019
RAM:   256M
FLASH: 128M NAND
ETH:   QCA8075
VDSL:  Intel/Lantiq VRX518 PCIe attached
       currently not supported
DECT:  Dialog SC14448
       currently not supported
WiFi2: IPQ4019 2T2R 2SS b/g/n
WiFi5: IPQ4019 2T2R 2SS n/ac
LED:    - Power/DSL green
        - WLAN green
        - FON/DECT green
        - Connect/WPS green
        - Info green
        - Info red
BTN:    - WLAN
        - FON
        - WPS/Connect
UART:  115200n8 3.3V (located under the Dialog chip)
       VCC - RX - TX - GND (Square is VCC)

Installation
------------
1. Grab the uboot for the Device from the 'u-boot-fritz7530'
   subdirectory. Place it in the same directory as the 'eva_ramboot.py'
   script. It is located in the 'scripts/flashing' subdirectory of the
   OpenWRT tree.

2. Assign yourself the IP address 192.168.178.10/24. Connect your
   Computer to one of the boxes LAN ports.

3. Connect Power to the Box. As soon as the LAN port of your computer
   shows link, load the U-Boot to the box using following command.

   > ./eva_ramboot.py --offset 0x85000000 192.168.178.1 uboot-fritz7530.bin

4. The U-Boot will now start. Now assign yourself the IP address
   192.168.1.70/24. Copy the OpenWRT initramfs (!) image to a TFTP
   server root directory and rename it to 'FRITZ7530.bin'.

5. The Box will now boot OpenWRT from RAM. This can take up to two
   minutes.

6. Copy the U-Boot and the OpenWRT sysupgrade (!) image to the Box using
   scp. SSH into the Box and first write the Bootloader to both previous
   kernel partitions.

   > mtd write /path/to/uboot-fritz7530.bin uboot0
   > mtd write /path/to/uboot-fritz7530.bin uboot1

7. Remove the AVM filesystem partitions to make room for our kernel +
   rootfs + overlayfs.

   > ubirmvol /dev/ubi0 --name=avm_filesys_0
   > ubirmvol /dev/ubi0 --name=avm_filesys_1

8. Flash OpenWRT peristently using sysupgrade.

   > sysupgrade -n /path/to/openwrt-sysupgrade.bin

Signed-off-by: David Bauer <mail@david-bauer.net>
[removed pcie-dts range node, refreshed on top of AP120-AC/E2600AC]
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>

3 files changed, 8 insertions, 2 deletions

diff --git a/package/boot/uboot-fritz4040/Makefile b/package/boot/uboot-fritz4040/Makefile
index 36ee0be0af..9af09afcd1 100644
--- a/package/boot/uboot-fritz4040/Makefile
+++ b/package/boot/uboot-fritz4040/Makefile
@@ -30,6 +30,11 @@ define U-Boot/fritz4040
   BUILD_DEVICES:=avm_fritzbox-4040
 endef
 
+define U-Boot/fritz7530
+  NAME:=FritzBox 7530
+  BUILD_DEVICES:=avm_fritzbox-7530
+endef
+
 UBOOT_CONFIGURE_VARS += USE_PRIVATE_LIBGCC=yes
 UBOOT_MAKE_FLAGS = USE_PRIVATE_LIBGCC=yes
 export DTC
@@ -56,6 +61,6 @@ define Package/u-boot/install
 	$(INSTALL_BIN) $(PKG_BUILD_DIR)/upload-to-f4040.sh $(1)/
 endef
 
-UBOOT_TARGETS := fritz4040
+UBOOT_TARGETS := fritz4040 fritz7530
 
 $(eval $(call BuildPackage/U-Boot))
diff --git a/package/firmware/ipq-wifi/Makefile b/package/firmware/ipq-wifi/Makefile
index 62f54fcd7f..9a00832ca2 100644
--- a/package/firmware/ipq-wifi/Makefile
+++ b/package/firmware/ipq-wifi/Makefile
@@ -18,7 +18,7 @@ endef
 # Please send a mail with your device-specific board files upstream.
 # You can find instructions and examples on the linux-wireless wiki:
 # <https://wireless.wiki.kernel.org/en/users/drivers/ath10k/boardfiles>
-ALLWIFIBOARDS:=alfa-network_ap120c-ac asus_map-ac2200 engenius_eap1300 linksys_ea6350v3 qxwlan_e2600ac
+ALLWIFIBOARDS:=alfa-network_ap120c-ac asus_map-ac2200 avm_fritzbox-7530 engenius_eap1300 linksys_ea6350v3 qxwlan_e2600ac
 ALLWIFIPACKAGES:=$(foreach BOARD,$(ALLWIFIBOARDS),ipq-wifi-$(BOARD))
 
 define Package/ipq-wifi-default
@@ -56,6 +56,7 @@ endef
 $(eval $(call generate-ipq-wifi-package,alfa-network_ap120c-ac,board-alfa-network_ap120c-ac.bin,ALFA Network AP120C-AC))
 $(eval $(call generate-ipq-wifi-package,asus_map-ac2200,board-map-ac2200.bin,ASUS MAP-AC2200))
 $(eval $(call generate-ipq-wifi-package,engenius_eap1300,board-engenius_eap1300.bin,EnGenius EAP1300))
+$(eval $(call generate-ipq-wifi-package,avm_fritzbox-7530,board-avm_fritzbox-7530.bin,AVM FRITZ!Box 7530))
 $(eval $(call generate-ipq-wifi-package,linksys_ea6350v3,board-linksys_ea6350v3.bin,Linksys EA6350v3))
 $(eval $(call generate-ipq-wifi-package,qxwlan_e2600ac,board-qxwlan-e2600ac.bin,Qxwlan E2600AC))
 
diff --git a/package/firmware/ipq-wifi/board-avm_fritzbox-7530.bin b/package/firmware/ipq-wifi/board-avm_fritzbox-7530.bin
new file mode 100644
index 0000000000..905145f1da
--- /dev/null
+++ b/package/firmware/ipq-wifi/board-avm_fritzbox-7530.bin