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authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>2010-01-19 10:13:14 +0100
committerUwe Kleine-König <u.kleine-koenig@pengutronix.de>2010-07-07 16:38:36 +0200
commit73a65b3f8587fa1c83768515ecc0bf6fa44ccdd1 (patch)
tree89a93172ce10f0e965c02b4a14aa55475ef88673 /arch
parent8d68fe7029ed2631363f6f37155586c0707b8dc0 (diff)
downloadop-kernel-dev-73a65b3f8587fa1c83768515ecc0bf6fa44ccdd1.zip
op-kernel-dev-73a65b3f8587fa1c83768515ecc0bf6fa44ccdd1.tar.gz
ARM: deprecate support for old way to pass kernel parameters
This was deprecated in 2001 and announced to live on for 5 years. For now provide a kernel parameter for those who still need it. Acked-by: Eric Miao <eric.miao@canonical.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/Kconfig6
-rw-r--r--arch/arm/kernel/Makefile4
-rw-r--r--arch/arm/kernel/compat.c7
-rw-r--r--arch/arm/kernel/compat.h2
-rw-r--r--arch/arm/kernel/setup.c11
5 files changed, 20 insertions, 10 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 1f254bd..a53ac65 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1374,6 +1374,12 @@ config UACCESS_WITH_MEMCPY
However, if the CPU data cache is using a write-allocate mode,
this option is unlikely to provide any performance gain.
+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"
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index 26d302c..021f72d 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -13,10 +13,12 @@ CFLAGS_REMOVE_return_address.o = -pg
# Object file lists.
-obj-y := compat.o elf.o entry-armv.o entry-common.o irq.o \
+obj-y := elf.o entry-armv.o entry-common.o irq.o \
process.o ptrace.o return_address.o setup.o signal.o \
sys_arm.o stacktrace.o time.o traps.o
+obj-$(CONFIG_DEPRECATED_PARAM_STRUCT) += compat.o
+
obj-$(CONFIG_LEDS) += leds.o
obj-$(CONFIG_OC_ETM) += etm.o
diff --git a/arch/arm/kernel/compat.c b/arch/arm/kernel/compat.c
index 0a13854..9256523 100644
--- a/arch/arm/kernel/compat.c
+++ b/arch/arm/kernel/compat.c
@@ -217,10 +217,3 @@ void __init convert_to_tag_list(struct tag *tags)
struct param_struct *params = (struct param_struct *)tags;
build_tag_list(params, &params->u2);
}
-
-void __init squash_mem_tags(struct tag *tag)
-{
- for (; tag->hdr.size; tag = tag_next(tag))
- if (tag->hdr.tag == ATAG_MEM)
- tag->hdr.tag = ATAG_NONE;
-}
diff --git a/arch/arm/kernel/compat.h b/arch/arm/kernel/compat.h
index 27e61a6..39264ab 100644
--- a/arch/arm/kernel/compat.h
+++ b/arch/arm/kernel/compat.h
@@ -9,5 +9,3 @@
*/
extern void convert_to_tag_list(struct tag *tags);
-
-extern void squash_mem_tags(struct tag *tag);
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 122d999..cbc6ddb 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -44,7 +44,9 @@
#include <asm/traps.h>
#include <asm/unwind.h>
+#if defined(CONFIG_DEPRECATED_PARAM_STRUCT)
#include "compat.h"
+#endif
#include "atags.h"
#include "tcm.h"
@@ -663,6 +665,13 @@ static int __init customize_machine(void)
}
arch_initcall(customize_machine);
+static void __init squash_mem_tags(struct tag *tag)
+{
+ for (; tag->hdr.size; tag = tag_next(tag))
+ if (tag->hdr.tag == ATAG_MEM)
+ tag->hdr.tag = ATAG_NONE;
+}
+
void __init setup_arch(char **cmdline_p)
{
struct tag *tags = (struct tag *)&init_tags;
@@ -683,12 +692,14 @@ void __init setup_arch(char **cmdline_p)
else if (mdesc->boot_params)
tags = phys_to_virt(mdesc->boot_params);
+#if defined(CONFIG_DEPRECATED_PARAM_STRUCT)
/*
* If we have the old style parameters, convert them to
* a tag list.
*/
if (tags->hdr.tag != ATAG_CORE)
convert_to_tag_list(tags);
+#endif
if (tags->hdr.tag != ATAG_CORE)
tags = (struct tag *)&init_tags;
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