---

yaml
---
r: 331473
b: refs/heads/master
c: bd51e2f
h: refs/heads/master
i:
  331471: ead6460
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: aa783b6fd60b3844e199b1c2d2f4068f3caa1358
+refs/heads/master: bd51e2f595580fb64bd8494badef746c4d626b25

trunk/arch/arm/Kconfig

@@ -1891,12 +1891,6 @@ config CC_STACKPROTECTOR
 	  neutralized via a kernel panic.
 	  This feature requires gcc version 4.2 or above.
 
-config DEPRECATED_PARAM_STRUCT
-	bool "Provide old way to pass kernel parameters"
-	help
-	  This was deprecated in 2001 and announced to live on for 5 years.
-	  Some old boot loaders still use this way.
-
 endmenu
 
 menu "Boot options"
@@ -1909,6 +1903,23 @@ config USE_OF
 	help
 	  Include support for flattened device tree machine descriptions.
 
+config ATAGS
+	bool "Support for the traditional ATAGS boot data passing" if USE_OF
+	default y
+	help
+	  This is the traditional way of passing data to the kernel at boot
+	  time. If you are solely relying on the flattened device tree (or
+	  the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
+	  to remove ATAGS support from your kernel binary.  If unsure,
+	  leave this to y.
+
+config DEPRECATED_PARAM_STRUCT
+	bool "Provide old way to pass kernel parameters"
+	depends on ATAGS
+	help
+	  This was deprecated in 2001 and announced to live on for 5 years.
+	  Some old boot loaders still use this way.
+
 # Compressed boot loader in ROM.  Yes, we really want to ask about
 # TEXT and BSS so we preserve their values in the config files.
 config ZBOOT_ROM_TEXT
@@ -2035,6 +2046,7 @@ config CMDLINE
 choice
 	prompt "Kernel command line type" if CMDLINE != ""
 	default CMDLINE_FROM_BOOTLOADER
+	depends on ATAGS
 
 config CMDLINE_FROM_BOOTLOADER
 	bool "Use bootloader kernel arguments if available"
@@ -2104,7 +2116,7 @@ config KEXEC
 
 config ATAGS_PROC
 	bool "Export atags in procfs"
-	depends on KEXEC
+	depends on ATAGS && KEXEC
 	default y
 	help
 	  Should the atags used to boot the kernel be exported in an "atags"

trunk/arch/arm/kernel/Makefile

@@ -15,10 +15,12 @@ CFLAGS_REMOVE_return_address.o = -pg
 
 # Object file lists.
 
-obj-y		:= atags_parse.o elf.o entry-armv.o entry-common.o irq.o opcodes.o \
+obj-y		:= elf.o entry-armv.o entry-common.o irq.o opcodes.o \
 		   process.o ptrace.o return_address.o sched_clock.o \
 		   setup.o signal.o stacktrace.o sys_arm.o time.o traps.o
 
+obj-$(CONFIG_ATAGS)		+= atags_parse.o
+obj-$(CONFIG_ATAGS_PROC)	+= atags_proc.o
 obj-$(CONFIG_DEPRECATED_PARAM_STRUCT) += atags_compat.o
 
 obj-$(CONFIG_LEDS)		+= leds.o
@@ -52,7 +54,6 @@ test-kprobes-objs		+= kprobes-test-thumb.o
 else
 test-kprobes-objs		+= kprobes-test-arm.o
 endif
-obj-$(CONFIG_ATAGS_PROC)	+= atags_proc.o
 obj-$(CONFIG_OABI_COMPAT)	+= sys_oabi-compat.o
 obj-$(CONFIG_ARM_THUMBEE)	+= thumbee.o
 obj-$(CONFIG_KGDB)		+= kgdb.o

trunk/arch/arm/kernel/atags.h

@@ -5,4 +5,15 @@ static inline void save_atags(struct tag *tags) { }
 #endif
 
 void convert_to_tag_list(struct tag *tags);
+
+#ifdef CONFIG_ATAGS
 struct machine_desc *setup_machine_tags(phys_addr_t __atags_pointer, unsigned int machine_nr);
+#else
+static inline struct machine_desc *
+setup_machine_tags(phys_addr_t __atags_pointer, unsigned int machine_nr)
+{
+	early_print("no ATAGS support: can't continue\n");
+	while (true);
+	unreachable();
+}
+#endif