[U-Boot] [PATCH 1/2] x86: move arch-specific asmlinkage to <asm/linkage.h>

[Masahiro Yamada <yamada.m@jp.panasonic.com>]

Commit 65dd74a674d6 (x86: ivybridge: Implement SDRAM init) introduced
x86-specific asmlinkage into arch/x86/include/asm/config.h.

Commit ed0a2fbf14f7 (x86: Add a definition of asmlinkage) added the
same macro define again, this time, into include/common.h.
(Please do not add arch-specific stuff to include/common.h any more;
it is already too cluttered.)

The generic asmlinkage is defined in <linux/linkage.h>.  If you want
to override it with an arch-specific one, the best way is to add it
to <asm/linkage.h> like Linux Kernel.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Simon Glass <sjg@chromium.org>
---

 arch/x86/include/asm/arch-ivybridge/pei_data.h | 2 ++
 arch/x86/include/asm/config.h                  | 1 -
 arch/x86/include/asm/linkage.h                 | 6 ++++++
 arch/x86/lib/bios.c                            | 1 +
 arch/x86/lib/bios.h                            | 2 ++
 include/common.h                               | 3 ---
 include/linux/linkage.h                        | 2 ++
 7 files changed, 13 insertions(+), 4 deletions(-)
 create mode 100644 arch/x86/include/asm/linkage.h

diff --git a/arch/x86/include/asm/arch-ivybridge/pei_data.h b/arch/x86/include/asm/arch-ivybridge/pei_data.h
index 5026c8b..9453336 100644
--- a/arch/x86/include/asm/arch-ivybridge/pei_data.h
+++ b/arch/x86/include/asm/arch-ivybridge/pei_data.h
@@ -7,6 +7,8 @@
 #ifndef ASM_ARCH_PEI_DATA_H
 #define ASM_ARCH_PEI_DATA_H
 
+#include <linux/linkage.h>
+
 struct pch_usb3_controller_settings {
 	/* 0: Disable, 1: Enable, 2: Auto, 3: Smart Auto */
 	uint16_t mode;
diff --git a/arch/x86/include/asm/config.h b/arch/x86/include/asm/config.h
index c97d988..ff15828 100644
--- a/arch/x86/include/asm/config.h
+++ b/arch/x86/include/asm/config.h
@@ -10,6 +10,5 @@
 #define CONFIG_SYS_GENERIC_BOARD
 #define CONFIG_LMB
 #define CONFIG_SYS_BOOT_RAMDISK_HIGH
-#define asmlinkage __attribute__((regparm(0)))
 
 #endif
diff --git a/arch/x86/include/asm/linkage.h b/arch/x86/include/asm/linkage.h
new file mode 100644
index 0000000..bdca72e
--- /dev/null
+++ b/arch/x86/include/asm/linkage.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_X86_LINKAGE_H
+#define _ASM_X86_LINKAGE_H
+
+#define asmlinkage CPP_ASMLINKAGE __attribute__((regparm(0)))
+
+#endif /* _ASM_X86_LINKAGE_H */
diff --git a/arch/x86/lib/bios.c b/arch/x86/lib/bios.c
index 298fca6..d1f8933 100644
--- a/arch/x86/lib/bios.c
+++ b/arch/x86/lib/bios.c
@@ -9,6 +9,7 @@
 #include <common.h>
 #include <bios_emul.h>
 #include <vbe.h>
+#include <linux/linkage.h>
 #include <asm/cache.h>
 #include <asm/processor.h>
 #include <asm/i8259.h>
diff --git a/arch/x86/lib/bios.h b/arch/x86/lib/bios.h
index 8491b4a..668f4b5 100644
--- a/arch/x86/lib/bios.h
+++ b/arch/x86/lib/bios.h
@@ -10,6 +10,8 @@
 #ifndef _X86_LIB_BIOS_H
 #define _X86_LIB_BIOS_H
 
+#include <linux/linkage.h>
+
 #define REALMODE_BASE		0x600
 
 #ifdef __ASSEMBLY__
diff --git a/include/common.h b/include/common.h
index 94c354b..f1ab2cf 100644
--- a/include/common.h
+++ b/include/common.h
@@ -73,9 +73,6 @@ typedef volatile unsigned char	vu_char;
 #ifdef CONFIG_ARM
 #define asmlinkage	/* nothing */
 #endif
-#ifdef CONFIG_X86
-#define asmlinkage __attribute__((regparm(0)))
-#endif
 #ifdef CONFIG_BLACKFIN
 #include <asm/blackfin.h>
 #endif
diff --git a/include/linux/linkage.h b/include/linux/linkage.h
index 7435fcd..5797498 100644
--- a/include/linux/linkage.h
+++ b/include/linux/linkage.h
@@ -17,7 +17,9 @@
 #define CPP_ASMLINKAGE
 #endif
 
+#ifndef asmlinkage
 #define asmlinkage CPP_ASMLINKAGE
+#endif
 
 #define SYMBOL_NAME_STR(X)	#X
 #define SYMBOL_NAME(X)		X
-- 
1.9.1