kernel: Copy patches from kernel 4.14 to 4.19

This just copies the files from the kernel 4.14 specific folders into
the kernel 4.19 specific folder, no changes are done to the files in
this commit.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 80 insertions, 0 deletions

diff --git a/target/linux/generic/pending-4.19/332-arc-add-OWRTDTB-section.patch b/target/linux/generic/pending-4.19/332-arc-add-OWRTDTB-section.patch
new file mode 100644
index 0000000000..58f14b6ca5
--- /dev/null
+++ b/target/linux/generic/pending-4.19/332-arc-add-OWRTDTB-section.patch
@@ -0,0 +1,80 @@
+From: Alexey Brodkin <abrodkin@synopsys.com>
+Subject: openwrt: arc - add OWRTDTB section
+
+This change allows OpenWRT to patch resulting kernel binary with
+external .dtb.
+
+That allows us to re-use exactky the same vmlinux on different boards
+given its ARC core configurations match (at least cache line sizes etc).
+
+""patch-dtb" searches for ASCII "OWRTDTB:" strign and copies external
+.dtb right after it, keeping the string in place.
+
+Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
+---
+ arch/arc/kernel/head.S        | 10 ++++++++++
+ arch/arc/kernel/setup.c       |  4 +++-
+ arch/arc/kernel/vmlinux.lds.S | 13 +++++++++++++
+ 3 files changed, 26 insertions(+), 1 deletion(-)
+
+--- a/arch/arc/kernel/head.S
++++ b/arch/arc/kernel/head.S
+@@ -49,6 +49,16 @@
+ 1:
+ .endm
+ 
++; Here "patch-dtb" will embed external .dtb
++; Note "patch-dtb" searches for ASCII "OWRTDTB:" string
++; and pastes .dtb right after it, hense the string precedes
++; __image_dtb symbol.
++	.section .owrt, "aw",@progbits
++	.ascii	"OWRTDTB:"
++ENTRY(__image_dtb)
++	.fill	0x4000
++END(__image_dtb)
++
+ 	.section .init.text, "ax",@progbits
+ 
+ ;----------------------------------------------------------------
+--- a/arch/arc/kernel/setup.c
++++ b/arch/arc/kernel/setup.c
+@@ -421,6 +421,8 @@ static inline int is_kernel(unsigned lon
+ 	return 0;
+ }
+ 
++extern struct boot_param_header __image_dtb;
++
+ void __init setup_arch(char **cmdline_p)
+ {
+ #ifdef CONFIG_ARC_UBOOT_SUPPORT
+@@ -434,7 +436,7 @@ void __init setup_arch(char **cmdline_p)
+ #endif
+ 	{
+ 		/* No, so try the embedded one */
+-		machine_desc = setup_machine_fdt(__dtb_start);
++		machine_desc = setup_machine_fdt(&__image_dtb);
+ 		if (!machine_desc)
+ 			panic("Embedded DT invalid\n");
+ 
+--- a/arch/arc/kernel/vmlinux.lds.S
++++ b/arch/arc/kernel/vmlinux.lds.S
+@@ -30,6 +30,19 @@ SECTIONS
+ 
+ 	. = CONFIG_LINUX_LINK_BASE;
+ 
++	/*
++	 * In OpenWRT we want to patch built binary embedding .dtb of choice.
++	 * This is implemented with "patch-dtb" utility which searches for
++	 * "OWRTDTB:" string in first 16k of image and if it is found
++	 * copies .dtb right after mentioned string.
++	 *
++	 * Note: "OWRTDTB:" won't be overwritten with .dtb, .dtb will follow it.
++	 */
++	.owrt : {
++		*(.owrt)
++		. = ALIGN(PAGE_SIZE);
++	}
++
+ 	_int_vec_base_lds = .;
+ 	.vector : {
+ 		*(.vector)