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Subject[PATCH 1/2] efi: Add asm-generic/efi.h for non-x86
Date
From: Matt Fleming <matt.fleming@intel.com>

From the #ifdef CONFIG_X86 in linux/efi.h it's clear we need a place to
declare functions that are implemented differently for each
architecture.

Since it's only x86 that needs to do special things, add a generic EFI
header file that can be used by everyone else and move the x86-specific
stuff to arch/x86/include/asm/efi.h.

Because the asm files are now included from linux/efi.h directly, this
change means we no longer have to include the asm file explicitly from C
files, allowing us to delete quite a few #include lines.

Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
---
arch/ia64/include/asm/efi.h | 6 ++++++
arch/x86/boot/compressed/eboot.c | 1 -
arch/x86/include/asm/efi.h | 10 ++++++++++
arch/x86/kernel/setup.c | 1 -
arch/x86/platform/efi/efi.c | 1 -
arch/x86/platform/efi/efi_32.c | 1 -
arch/x86/platform/efi/efi_64.c | 1 -
arch/x86/platform/uv/bios_uv.c | 1 -
include/asm-generic/efi.h | 17 +++++++++++++++++
include/linux/efi.h | 31 ++-----------------------------
10 files changed, 35 insertions(+), 35 deletions(-)
create mode 100644 arch/ia64/include/asm/efi.h
create mode 100644 include/asm-generic/efi.h

diff --git a/arch/ia64/include/asm/efi.h b/arch/ia64/include/asm/efi.h
new file mode 100644
index 0000000..7b69db7
--- /dev/null
+++ b/arch/ia64/include/asm/efi.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_EFI_H
+#define _ASM_EFI_H
+
+#include <asm-generic/efi.h>
+
+#endif /* _ASM_EFI_H */
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index b7388a4..d6eb766 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -9,7 +9,6 @@

#include <linux/efi.h>
#include <linux/pci.h>
-#include <asm/efi.h>
#include <asm/setup.h>
#include <asm/desc.h>

diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index 0062a01..4c8f5c2 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -101,9 +101,14 @@ extern void efi_call_phys_prelog(void);
extern void efi_call_phys_epilog(void);
extern void efi_unmap_memmap(void);
extern void efi_memory_uc(u64 addr, unsigned long size);
+extern void efi_late_init(void);
+extern void efi_free_boot_services(void);
+extern efi_status_t efi_query_variable_store(u32 attributes, unsigned long size);

#ifdef CONFIG_EFI

+extern int efi_enabled(int facility);
+
static inline bool efi_is_native(void)
{
return IS_ENABLED(CONFIG_X86_64) == efi_enabled(EFI_64BIT);
@@ -120,6 +125,11 @@ static inline bool efi_is_native(void)
#define efi_call4(_f, _a1, _a2, _a3, _a4) (-ENOSYS)
#define efi_call5(_f, _a1, _a2, _a3, _a4, _a5) (-ENOSYS)
#define efi_call6(_f, _a1, _a2, _a3, _a4, _a5, _a6) (-ENOSYS)
+
+static inline int efi_enabled(int facility)
+{
+ return 0;
+}
#endif /* CONFIG_EFI */

#endif /* _ASM_X86_EFI_H */
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index f0de629..415e51b 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -78,7 +78,6 @@
#include <asm/e820.h>
#include <asm/mpspec.h>
#include <asm/setup.h>
-#include <asm/efi.h>
#include <asm/timer.h>
#include <asm/i8259.h>
#include <asm/sections.h>
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index c7e22ab..4fce62a 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -44,7 +44,6 @@
#include <linux/bcd.h>

#include <asm/setup.h>
-#include <asm/efi.h>
#include <asm/time.h>
#include <asm/cacheflush.h>
#include <asm/tlbflush.h>
diff --git a/arch/x86/platform/efi/efi_32.c b/arch/x86/platform/efi/efi_32.c
index 40e4469..108a825 100644
--- a/arch/x86/platform/efi/efi_32.c
+++ b/arch/x86/platform/efi/efi_32.c
@@ -29,7 +29,6 @@
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/tlbflush.h>
-#include <asm/efi.h>

/*
* To make EFI call EFI runtime service in physical addressing mode we need
diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c
index 39a0e7f..de26614 100644
--- a/arch/x86/platform/efi/efi_64.c
+++ b/arch/x86/platform/efi/efi_64.c
@@ -35,7 +35,6 @@
#include <asm/pgtable.h>
#include <asm/tlbflush.h>
#include <asm/proto.h>
-#include <asm/efi.h>
#include <asm/cacheflush.h>
#include <asm/fixmap.h>

diff --git a/arch/x86/platform/uv/bios_uv.c b/arch/x86/platform/uv/bios_uv.c
index 7666121..f3b1fa1 100644
--- a/arch/x86/platform/uv/bios_uv.c
+++ b/arch/x86/platform/uv/bios_uv.c
@@ -21,7 +21,6 @@

#include <linux/efi.h>
#include <linux/export.h>
-#include <asm/efi.h>
#include <linux/io.h>
#include <asm/uv/bios.h>
#include <asm/uv/uv_hub.h>
diff --git a/include/asm-generic/efi.h b/include/asm-generic/efi.h
new file mode 100644
index 0000000..8a31713
--- /dev/null
+++ b/include/asm-generic/efi.h
@@ -0,0 +1,17 @@
+#ifndef _ASM_GENERIC_EFI_H
+#define _ASM_GENERIC_EFI_H
+
+static inline void efi_late_init(void) {}
+static inline void efi_free_boot_services(void) {}
+
+static inline efi_status_t efi_query_variable_store(u32 attributes, unsigned long size)
+{
+ return EFI_SUCCESS;
+}
+
+static inline int efi_enabled(int facility)
+{
+ return IS_ENABLED(CONFIG_EFI);
+}
+
+#endif /* _ASM_GENERIC_EFI_H */
diff --git a/include/linux/efi.h b/include/linux/efi.h
index 5f8f176..ced7644 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -573,19 +573,6 @@ extern void efi_map_pal_code (void);
extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg);
extern void efi_gettimeofday (struct timespec *ts);
extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */
-#ifdef CONFIG_X86
-extern void efi_late_init(void);
-extern void efi_free_boot_services(void);
-extern efi_status_t efi_query_variable_store(u32 attributes, unsigned long size);
-#else
-static inline void efi_late_init(void) {}
-static inline void efi_free_boot_services(void) {}
-
-static inline efi_status_t efi_query_variable_store(u32 attributes, unsigned long size)
-{
- return EFI_SUCCESS;
-}
-#endif
extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr);
extern u64 efi_get_iobase (void);
extern u32 efi_mem_type (unsigned long phys_addr);
@@ -635,22 +622,6 @@ extern int __init efi_setup_pcdp_console(char *);
#define EFI_MEMMAP 4 /* Can we use EFI memory map? */
#define EFI_64BIT 5 /* Is the firmware 64-bit? */

-#ifdef CONFIG_EFI
-# ifdef CONFIG_X86
-extern int efi_enabled(int facility);
-# else
-static inline int efi_enabled(int facility)
-{
- return 1;
-}
-# endif
-#else
-static inline int efi_enabled(int facility)
-{
- return 0;
-}
-#endif
-
/*
* Variable Attributes
*/
@@ -842,4 +813,6 @@ int efivars_sysfs_init(void);

#endif /* CONFIG_EFI_VARS */

+#include <asm/efi.h>
+
#endif /* _LINUX_EFI_H */
--
1.8.1.4


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