ipq806x: add support for ASRock G10

The ASRock G10 is a 2.4/5 GHz band 11ac "Gaming" router,
based on Qualcomm IPQ8064.

Specifications:

SoC:	Qualcomm IPQ8064
CPU:	Dual-Core A15 @ (384 - 1,400 MHz, 2C2T)
DRAM:	512 MiB (~467 MiB available)
NAND:	128 MB (Micron MT29F1G08ABBEAH4)
WLAN0:	4T4R 5 GHz Wlan (QCA9980)
WLAN1:	4T4R 2.4 GHz Wlan (QCA9980)
ETH:    5x 10/100/1000 Mbps Ethernet (QCA8337)
INPUT:  Reset Button, WPS 2.4G and WPS 5G Button
LEDS:   1 multicolor status LED
USB:    2x USB 3.0 Type-A
POWER:  12VDC/3A AC Adapter + dedicated Power Switch
UART:   Setting is 115200-8-N-1. 1x4 .1" unpopulated header
	on the PCB (J6 - very tiny silkscreen next to TX).
        Pinout: 1. 3v3 (Square - best skipped!), 2. RX, 3. GND, 4. TX

WARNING: The serial port needs a TTL/RS-232 3.3v level converter!
	 (Depending on the serial adapter RX and TX might need to
	  be swapped).

Note about the IR-Remote:
There's a 8-Bit MCU (SONIX SN8F25E21SG) which is controlling the
IR-Remote and is fed by the IR-Photodiode. The SoC can talk to
the device via I2C. The vendor's GPL archive comes with the source
of the interface driver for this as a (character driver), the main
control software is however a blob.

Installation Instructions:
 1. Download factory image to disk
 2. Apply factory image via stock web-gui

Back to stock:
 1. Login to router via ssh
 2. run "asrock_g10_back_to_factory" script from /sbin

Notes:
 - If something goes wrong durring sysupgrade, router will go back to
   factory image.
 - Asrock G10 uses partition layout from smem. So partition layout can
   be normal or alternate.
 - 900-arm-add-cmdline-override.patch was copied from 102-powerpc-add-cmdline-override.patch
   from powerpc target.

Knowledge about BOOTCONFIG partition was based on user "jmomo" post from old
OpenWrt forum (Post #50):
https://forum.archive.openwrt.org/viewtopic.php?id=65956&p=2

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
[bump to 5.4, add factory image, fix sysupgrade, convert partition
layout to smem, remove ipq-wifi-asrock-g10 and use ART, minor fixes]
Co-Authored-by: Pawel Dembicki <paweldembicki@gmail.com>
Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
Tested-by: Lukasz Ostapiuk <palibrzuch@gmail.com>

3 files changed, 41 insertions, 3 deletions

diff --git a/target/linux/ipq806x/patches-5.4/0069-arm-boot-add-dts-files.patch b/target/linux/ipq806x/patches-5.4/0069-arm-boot-add-dts-files.patch
index 7e15b87e39..6bbf184ac7 100644
--- a/target/linux/ipq806x/patches-5.4/0069-arm-boot-add-dts-files.patch
+++ b/target/linux/ipq806x/patches-5.4/0069-arm-boot-add-dts-files.patch
@@ -10,7 +10,7 @@ Signed-off-by: John Crispin <john@phrozen.org>
 
 --- a/arch/arm/boot/dts/Makefile
 +++ b/arch/arm/boot/dts/Makefile
-@@ -843,6 +843,20 @@ dtb-$(CONFIG_ARCH_QCOM) += \
+@@ -843,6 +843,21 @@ dtb-$(CONFIG_ARCH_QCOM) += \
  	qcom-ipq4019-ap.dk07.1-c1.dtb \
  	qcom-ipq4019-ap.dk07.1-c2.dtb \
  	qcom-ipq8064-ap148.dtb \
@@ -20,6 +20,7 @@ Signed-off-by: John Crispin <john@phrozen.org>
 +	qcom-ipq8064-ap161.dtb \
 +	qcom-ipq8064-ea7500-v1.dtb \
 +	qcom-ipq8064-ea8500.dtb \
++	qcom-ipq8064-g10.dtb \
 +	qcom-ipq8064-r7500.dtb \
 +	qcom-ipq8064-r7500v2.dtb \
 +	qcom-ipq8064-wg2600hp.dtb \
diff --git a/target/linux/ipq806x/patches-5.4/900-arm-add-cmdline-override.patch b/target/linux/ipq806x/patches-5.4/900-arm-add-cmdline-override.patch
new file mode 100644
index 0000000000..bb3aa2622c
--- /dev/null
+++ b/target/linux/ipq806x/patches-5.4/900-arm-add-cmdline-override.patch
@@ -0,0 +1,37 @@
+--- a/arch/arm/Kconfig
++++ b/arch/arm/Kconfig
+@@ -1836,6 +1836,14 @@ config ARM_ATAG_DTB_COMPAT_CMDLINE_MANGL
+ 	  Only command line ATAG will be processed, the rest of the ATAGs
+ 	  sent by bootloader will be ignored.
+ 
++config CMDLINE_OVERRIDE
++    bool "Use alternative cmdline from device tree"
++    help
++      Some bootloaders may have uneditable bootargs. While CMDLINE_FORCE can
++      be used, this is not a good option for kernels that are shared across
++      devices. This setting enables using "chosen/cmdline-override" as the
++      cmdline if it exists in the device tree.
++
+ endchoice
+ 
+ config CMDLINE
+--- a/drivers/of/fdt.c
++++ b/drivers/of/fdt.c
+@@ -1060,6 +1060,17 @@ int __init early_init_dt_scan_chosen(uns
+ 	if (p != NULL && l > 0)
+ 		strlcpy(data, p, min(l, COMMAND_LINE_SIZE));
+ 
++    /* CONFIG_CMDLINE_OVERRIDE is used to fallback to a different
++     * device tree option of chosen/bootargs-override. This is
++     * helpful on boards where u-boot sets bootargs, and is unable
++     * to be modified.
++     */
++#ifdef CONFIG_CMDLINE_OVERRIDE
++	p = of_get_flat_dt_prop(node, "bootargs-override", &l);
++	if (p != NULL && l > 0)
++		strlcpy(data, p, min((int)l, COMMAND_LINE_SIZE));
++#endif
++
+ 	/*
+ 	 * CONFIG_CMDLINE is meant to be a default in case nothing else
+ 	 * managed to set the command line, unless CONFIG_CMDLINE_FORCE
diff --git a/target/linux/ipq806x/patches-5.4/997-device_tree_cmdline.patch b/target/linux/ipq806x/patches-5.4/997-device_tree_cmdline.patch
index 3cc032fdd2..b6b1b04765 100644
--- a/target/linux/ipq806x/patches-5.4/997-device_tree_cmdline.patch
+++ b/target/linux/ipq806x/patches-5.4/997-device_tree_cmdline.patch
@@ -8,5 +8,5 @@
 +	if (p != NULL && l > 0)
 +		strlcat(data, p, min_t(int, strlen(data) + (int)l, COMMAND_LINE_SIZE));
  
- 	/*
- 	 * CONFIG_CMDLINE is meant to be a default in case nothing else
+     /* CONFIG_CMDLINE_OVERRIDE is used to fallback to a different
+      * device tree option of chosen/bootargs-override. This is