ipq806x: 5:15: copy config and patch from 5.10

Copy config and patch from kernel 5.10 to kernel 5.15

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>

target/linux/ipq806x/patches-5.15/0001-dtbindings-qcom_adm-Fix-channel-specifiers.patch

@@ -0,0 +1,71 @@
+From 28d0ed88f536dd639adf1b0c7c08e04be3c8f294 Mon Sep 17 00:00:00 2001
+From: Thomas Pedersen <twp@codeaurora.org>
+Date: Mon, 16 May 2016 17:58:50 -0700
+Subject: [PATCH 01/69] dtbindings: qcom_adm: Fix channel specifiers
+
+Original patch from Andy Gross.
+
+This patch removes the crci information from the dma
+channel property.  At least one client device requires
+using more than one CRCI value for a channel.  This does
+not match the current binding and the crci information
+needs to be removed.
+
+Instead, the client device will provide this information
+via other means.
+
+Signed-off-by: Andy Gross <agross@codeaurora.org>
+Signed-off-by: Thomas Pedersen <twp@codeaurora.org>
+---
+ Documentation/devicetree/bindings/dma/qcom_adm.txt | 16 ++++++----------
+ 1 file changed, 6 insertions(+), 10 deletions(-)
+
+--- a/Documentation/devicetree/bindings/dma/qcom_adm.txt
++++ b/Documentation/devicetree/bindings/dma/qcom_adm.txt
+@@ -4,8 +4,7 @@ Required properties:
+ - compatible: must contain "qcom,adm" for IPQ/APQ8064 and MSM8960
+ - reg: Address range for DMA registers
+ - interrupts: Should contain one interrupt shared by all channels
+-- #dma-cells: must be <2>.  First cell denotes the channel number.  Second cell
+-  denotes CRCI (client rate control interface) flow control assignment.
++- #dma-cells: must be <1>.  First cell denotes the channel number.
+ - clocks: Should contain the core clock and interface clock.
+ - clock-names: Must contain "core" for the core clock and "iface" for the
+   interface clock.
+@@ -22,7 +21,7 @@ Example:
+ 			compatible = "qcom,adm";
+ 			reg = <0x18300000 0x100000>;
+ 			interrupts = <0 170 0>;
+-			#dma-cells = <2>;
++			#dma-cells = <1>;
+
+ 			clocks = <&gcc ADM0_CLK>, <&gcc ADM0_PBUS_CLK>;
+ 			clock-names = "core", "iface";
+@@ -35,15 +34,12 @@ Example:
+ 			qcom,ee = <0>;
+ 		};
+
+-DMA clients must use the format descripted in the dma.txt file, using a three
++DMA clients must use the format descripted in the dma.txt file, using a two
+ cell specifier for each channel.
+
+-Each dmas request consists of 3 cells:
++Each dmas request consists of two cells:
+  1. phandle pointing to the DMA controller
+  2. channel number
+- 3. CRCI assignment, if applicable.  If no CRCI flow control is required, use 0.
+-    The CRCI is used for flow control.  It identifies the peripheral device that
+-    is the source/destination for the transferred data.
+
+ Example:
+
+@@ -55,7 +51,7 @@ Example:
+
+ 		cs-gpios = <&qcom_pinmux 20 0>;
+
+-		dmas = <&adm_dma 6 9>,
+-			<&adm_dma 5 10>;
++		dmas = <&adm_dma 6>,
++			<&adm_dma 5>;
+ 		dma-names = "rx", "tx";
+ 	};

target/linux/ipq806x/patches-5.15/0033-ARM-qcom-automatically-select-PCI_DOMAINS-if-PCI-is-.patch

@@ -0,0 +1,29 @@
+From 48051ece78136e4235a2415a52797db56f8a4478 Mon Sep 17 00:00:00 2001
+From: Mathieu Olivari <mathieu@codeaurora.org>
+Date: Tue, 21 Apr 2015 19:09:07 -0700
+Subject: [PATCH 33/69] ARM: qcom: automatically select PCI_DOMAINS if PCI is
+ enabled
+
+If multiple PCIe devices are present in the system, the kernel will
+panic at boot time when trying to scan the PCI buses. This happens on
+IPQ806x based platforms, which has 3 PCIe ports.
+
+Enabling this option allows the kernel to assign the pci-domains
+according to the device-tree content. This allows multiple PCIe
+controllers to coexist in the system.
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ arch/arm/mach-qcom/Kconfig | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/arch/arm/mach-qcom/Kconfig
++++ b/arch/arm/mach-qcom/Kconfig
+@@ -7,6 +7,7 @@ menuconfig ARCH_QCOM
+ 	select ARM_AMBA
+ 	select PINCTRL
+ 	select QCOM_SCM if SMP
++	select PCI_DOMAINS if PCI
+ 	help
+ 	  Support for Qualcomm's devicetree based systems.
+

target/linux/ipq806x/patches-5.15/0060-HACK-arch-arm-force-ZRELADDR-on-arch-qcom.patch

@@ -0,0 +1,62 @@
+From fa71139b55e114aa8c3c4823ff8ee7d49ee810d4 Mon Sep 17 00:00:00 2001
+From: Mathieu Olivari <mathieu@codeaurora.org>
+Date: Wed, 29 Apr 2015 15:21:46 -0700
+Subject: [PATCH 60/69] HACK: arch: arm: force ZRELADDR on arch-qcom
+
+ARCH_QCOM is using the ARCH_MULTIPLATFORM option, as now recommended
+on most ARM architectures. This automatically calculate ZRELADDR by
+masking PHYS_OFFSET with 0xf8000000.
+
+However, on IPQ806x, the first ~20MB of RAM is reserved for the hardware
+network accelerators, and the bootloader removes this section from the
+layout passed from the ATAGS (when used).
+
+For newer bootloader, when DT is used, this is not a problem, we just
+reserve this memory in the device tree. But if the bootloader doesn't
+have DT support, then ATAGS have to be used. In this case, the ARM
+decompressor will position the kernel in this low mem, which will not be
+in the RAM section mapped by the bootloader, which means the kernel will
+freeze in the middle of the boot process trying to map the memory.
+
+As a work around, this patch allows disabling AUTO_ZRELADDR when
+ARCH_QCOM is selected. It makes the zImage usage possible on bootloaders
+which don't support device-tree, which is the case on certain early
+IPQ806x based designs.
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ arch/arm/Kconfig                 | 2 +-
+ arch/arm/Makefile                | 2 ++
+ arch/arm/mach-qcom/Makefile.boot | 1 +
+ 3 files changed, 4 insertions(+), 1 deletion(-)
+ create mode 100644 arch/arm/mach-qcom/Makefile.boot
+
+--- a/arch/arm/Kconfig
++++ b/arch/arm/Kconfig
+@@ -322,7 +322,7 @@ config ARCH_MULTIPLATFORM
+ 	select ARCH_SELECT_MEMORY_MODEL
+ 	select ARM_HAS_SG_CHAIN
+ 	select ARM_PATCH_PHYS_VIRT
+-	select AUTO_ZRELADDR
++	select AUTO_ZRELADDR if !ARCH_QCOM
+ 	select TIMER_OF
+ 	select COMMON_CLK
+ 	select GENERIC_CLOCKEVENTS
+--- a/arch/arm/Makefile
++++ b/arch/arm/Makefile
+@@ -251,9 +251,11 @@ MACHINE  := arch/arm/mach-$(word 1,$(mac
+ else
+ MACHINE  :=
+ endif
++ifeq ($(CONFIG_ARCH_QCOM),)
+ ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
+ MACHINE  :=
+ endif
++endif
+
+ machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
+ platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y)))
+--- /dev/null
++++ b/arch/arm/mach-qcom/Makefile.boot
+@@ -0,0 +1 @@
++zreladdr-y+= 0x42208000

target/linux/ipq806x/patches-5.15/0065-arm-override-compiler-flags.patch

@@ -0,0 +1,21 @@
+From 4d8e29642661397a339ac3485f212c6360445421 Mon Sep 17 00:00:00 2001
+From: John Crispin <john@phrozen.org>
+Date: Thu, 9 Mar 2017 09:33:32 +0100
+Subject: [PATCH 65/69] arm: override compiler flags
+
+Signed-off-by: John Crispin <john@phrozen.org>
+---
+ arch/arm/Makefile | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/arch/arm/Makefile
++++ b/arch/arm/Makefile
+@@ -61,7 +61,7 @@ KBUILD_CFLAGS	+= $(call cc-option,-fno-i
+ # macro, but instead defines a whole series of macros which makes
+ # testing for a specific architecture or later rather impossible.
+ arch-$(CONFIG_CPU_32v7M)	=-D__LINUX_ARM_ARCH__=7 -march=armv7-m
+-arch-$(CONFIG_CPU_32v7)		=-D__LINUX_ARM_ARCH__=7 -march=armv7-a
++arch-$(CONFIG_CPU_32v7)		=-D__LINUX_ARM_ARCH__=7 -mcpu=cortex-a15
+ arch-$(CONFIG_CPU_32v6)		=-D__LINUX_ARM_ARCH__=6 -march=armv6
+ # Only override the compiler option if ARMv6. The ARMv6K extensions are
+ # always available in ARMv7

target/linux/ipq806x/patches-5.15/0067-generic-Mangle-bootloader-s-kernel-arguments.patch

@@ -0,0 +1,210 @@
+From 71270226b14733a4b1f2cde58ea9265caa50b38d Mon Sep 17 00:00:00 2001
+From: Adrian Panella <ianchi74@outlook.com>
+Date: Thu, 9 Mar 2017 09:37:17 +0100
+Subject: [PATCH 67/69] generic: Mangle bootloader's kernel arguments
+
+The command-line arguments provided by the boot loader will be
+appended to a new device tree property: bootloader-args.
+If there is a property "append-rootblock" in DT under /chosen
+and a root= option in bootloaders command line it will be parsed
+and added to DT bootargs with the form: <append-rootblock>XX.
+Only command line ATAG will be processed, the rest of the ATAGs
+sent by bootloader will be ignored.
+This is usefull in dual boot systems, to get the current root partition
+without afecting the rest of the system.
+
+Signed-off-by: Adrian Panella <ianchi74@outlook.com>
+---
+ arch/arm/Kconfig                        | 11 +++++
+ arch/arm/boot/compressed/atags_to_fdt.c | 72 ++++++++++++++++++++++++++++++++-
+ init/main.c                             | 16 ++++++++
+ 3 files changed, 98 insertions(+), 1 deletion(-)
+
+--- a/arch/arm/Kconfig
++++ b/arch/arm/Kconfig
+@@ -1781,6 +1781,17 @@ config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEN
+ 	  The command-line arguments provided by the boot loader will be
+ 	  appended to the the device tree bootargs property.
+
++config ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE
++	bool "Append rootblock parsing bootloader's kernel arguments"
++	help
++	  The command-line arguments provided by the boot loader will be
++	  appended to a new device tree property: bootloader-args.
++	  If there is a property "append-rootblock" in DT under /chosen
++	  and a root= option in bootloaders command line it will be parsed
++	  and added to DT bootargs with the form: <append-rootblock>XX.
++	  Only command line ATAG will be processed, the rest of the ATAGs
++	  sent by bootloader will be ignored.
++
+ endchoice
+
+ config CMDLINE
+--- a/arch/arm/boot/compressed/atags_to_fdt.c
++++ b/arch/arm/boot/compressed/atags_to_fdt.c
+@@ -5,6 +5,8 @@
+
+ #if defined(CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND)
+ #define do_extend_cmdline 1
++#elif defined(CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE)
++#define do_extend_cmdline 1
+ #else
+ #define do_extend_cmdline 0
+ #endif
+@@ -69,6 +71,80 @@ static uint32_t get_cell_size(const void
+ 	return cell_size;
+ }
+
++#if defined(CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE)
++/**
++ * taken from arch/x86/boot/string.c
++ * local_strstr - Find the first substring in a %NUL terminated string
++ * @s1: The string to be searched
++ * @s2: The string to search for
++ */
++static char *local_strstr(const char *s1, const char *s2)
++{
++	size_t l1, l2;
++
++	l2 = strlen(s2);
++	if (!l2)
++		return (char *)s1;
++	l1 = strlen(s1);
++	while (l1 >= l2) {
++		l1--;
++		if (!memcmp(s1, s2, l2))
++			return (char *)s1;
++		s1++;
++	}
++	return NULL;
++}
++
++static char *append_rootblock(char *dest, const char *str, int len, void *fdt)
++{
++	char *ptr, *end, *tmp;
++	char *root="root=";
++	char *find_rootblock;
++	int i, l;
++	const char *rootblock;
++
++	find_rootblock = getprop(fdt, "/chosen", "find-rootblock", &l);
++	if(!find_rootblock)
++		find_rootblock = root;
++
++	//ARM doesn't have __HAVE_ARCH_STRSTR, so it was copied from x86
++	ptr = local_strstr(str, find_rootblock);
++
++	if(!ptr)
++		return dest;
++
++	end = strchr(ptr, ' ');
++	end = end ? (end - 1) : (strchr(ptr, 0) - 1);
++
++	// Some boards ubi.mtd=XX,ZZZZ, so let's check for '," too.
++	tmp = strchr(ptr, ',');
++
++	if(tmp)
++		end = end < tmp ? end : tmp - 1;
++
++	//find partition number (assumes format root=/dev/mtdXX | /dev/mtdblockXX | yy:XX | ubi.mtd=XX,ZZZZ )
++	for( i = 0; end >= ptr && *end >= '0' && *end <= '9'; end--, i++);
++	ptr = end + 1;
++
++	/* if append-rootblock property is set use it to append to command line */
++	rootblock = getprop(fdt, "/chosen", "append-rootblock", &l);
++	if(rootblock != NULL) {
++		if(*dest != ' ') {
++			*dest = ' ';
++			dest++;
++			len++;
++		}
++		if (len + l + i <= COMMAND_LINE_SIZE) {
++			memcpy(dest, rootblock, l);
++			dest += l - 1;
++			memcpy(dest, ptr, i);
++			dest += i;
++		}
++	}
++	return dest;
++}
++#endif
++
+ static void merge_fdt_bootargs(void *fdt, const char *fdt_cmdline)
+ {
+ 	char cmdline[COMMAND_LINE_SIZE];
+@@ -88,12 +164,21 @@ static void merge_fdt_bootargs(void *fdt
+
+ 	/* and append the ATAG_CMDLINE */
+ 	if (fdt_cmdline) {
++
++#if defined(CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE)
++		//save original bootloader args
++		//and append ubi.mtd with root partition number to current cmdline
++		setprop_string(fdt, "/chosen", "bootloader-args", fdt_cmdline);
++		ptr = append_rootblock(ptr, fdt_cmdline, len, fdt);
++
++#else
+ 		len = strlen(fdt_cmdline);
+ 		if (ptr - cmdline + len + 2 < COMMAND_LINE_SIZE) {
+ 			*ptr++ = ' ';
+ 			memcpy(ptr, fdt_cmdline, len);
+ 			ptr += len;
+ 		}
++#endif
+ 	}
+ 	*ptr = '\0';
+
+@@ -168,7 +253,9 @@ int atags_to_fdt(void *atag_list, void *
+ 			else
+ 				setprop_string(fdt, "/chosen", "bootargs",
+ 					       atag->u.cmdline.cmdline);
+-		} else if (atag->hdr.tag == ATAG_MEM) {
++		}
++#ifndef CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE
++		else if (atag->hdr.tag == ATAG_MEM) {
+ 			if (memcount >= sizeof(mem_reg_property)/4)
+ 				continue;
+ 			if (!atag->u.mem.size)
+@@ -212,6 +299,10 @@ int atags_to_fdt(void *atag_list, void *
+ 		setprop(fdt, "/memory", "reg", mem_reg_property,
+ 			4 * memcount * memsize);
+ 	}
++#else
++
++	}
++#endif
+
+ 	return fdt_pack(fdt);
+ }
+--- a/init/main.c
++++ b/init/main.c
+@@ -110,6 +110,10 @@
+
+ #include <kunit/test.h>
+
++#if defined(CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE)
++#include <linux/of.h>
++#endif
++
+ static int kernel_init(void *);
+
+ extern void init_IRQ(void);
+@@ -906,6 +910,18 @@ asmlinkage __visible void __init __no_sa
+ 	pr_notice("Kernel command line: %s\n", saved_command_line);
+ 	/* parameters may set static keys */
+ 	jump_label_init();
++
++#if defined(CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE)
++	//Show bootloader's original command line for reference
++	if(of_chosen) {
++		const char *prop = of_get_property(of_chosen, "bootloader-args", NULL);
++		if(prop)
++			pr_notice("Bootloader command line (ignored): %s\n", prop);
++		else
++			pr_notice("Bootloader command line not present\n");
++	}
++#endif
++
+ 	parse_early_param();
+ 	after_dashes = parse_args("Booting kernel",
+ 				  static_command_line, __start___param,