aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/generic/patches-4.4/332-arc-add-OWRTDTB-section.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/generic/patches-4.4/332-arc-add-OWRTDTB-section.patch')
-rw-r--r--target/linux/generic/patches-4.4/332-arc-add-OWRTDTB-section.patch82
1 files changed, 0 insertions, 82 deletions
diff --git a/target/linux/generic/patches-4.4/332-arc-add-OWRTDTB-section.patch b/target/linux/generic/patches-4.4/332-arc-add-OWRTDTB-section.patch
deleted file mode 100644
index 5a2b67cfcd..0000000000
--- a/target/linux/generic/patches-4.4/332-arc-add-OWRTDTB-section.patch
+++ /dev/null
@@ -1,82 +0,0 @@
-From 690e7f2cad271595ff68cace1c45fb10779bde41 Mon Sep 17 00:00:00 2001
-From: Alexey Brodkin <abrodkin@synopsys.com>
-Date: Fri, 15 Jan 2016 00:34:01 +0300
-Subject: [PATCH 2/2] 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
-@@ -366,6 +366,8 @@ 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
-@@ -379,7 +381,7 @@ 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)