Commit-ID: 62fa6e69a436f662090f3996538adb9e568817f6
Gitweb: http://git.kernel.org/tip/62fa6e69a436f662090f3996538adb9e568817f6
Author: Matt Fleming <matt.fleming@xxxxxxxxx>
AuthorDate: Thu, 27 Mar 2014 15:10:39 -0700
Committer: Matt Fleming <matt.fleming@xxxxxxxxx>
CommitDate: Thu, 17 Apr 2014 13:26:30 +0100
x86/efi: Delete most of the efi_call* macros
We really only need one phys and one virt function call, and then only
one assembly function to make firmware calls.
Since we are not using the C type system anyway, we're not really losing
much by deleting the macros apart from no longer having a check that
we are passing the correct number of parameters. The lack of duplicated
code seems like a worthwhile trade-off.
Cc: Ricardo Neri <ricardo.neri-calderon@xxxxxxxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Signed-off-by: Matt Fleming <matt.fleming@xxxxxxxxx>
---
arch/x86/boot/compressed/head_64.S | 2 +-
arch/x86/include/asm/efi.h | 74 ++++-----------------------------
arch/x86/platform/efi/efi.c | 48 +++++++++++-----------
arch/x86/platform/efi/efi_stub_64.S | 81 +------------------------------------
arch/x86/platform/uv/bios_uv.c | 2 +-
5 files changed, 35 insertions(+), 172 deletions(-)
diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S
index 0d558ee..2884e0c 100644
--- a/arch/x86/boot/compressed/head_64.S
+++ b/arch/x86/boot/compressed/head_64.S
@@ -452,7 +452,7 @@ efi32_config:
.global efi64_config
efi64_config:
.fill 11,8,0
- .quad efi_call6
+ .quad efi_call
.byte 1
#endif /* CONFIG_EFI_STUB */
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index 0869434..e397559 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -27,16 +27,6 @@
extern unsigned long asmlinkage efi_call_phys(void *, ...);
-#define efi_call_phys0(f) efi_call_phys(f)
-#define efi_call_phys1(f, a1) efi_call_phys(f, a1)
-#define efi_call_phys2(f, a1, a2) efi_call_phys(f, a1, a2)
-#define efi_call_phys3(f, a1, a2, a3) efi_call_phys(f, a1, a2, a3)
-#define efi_call_phys4(f, a1, a2, a3, a4) \
- efi_call_phys(f, a1, a2, a3, a4)
-#define efi_call_phys5(f, a1, a2, a3, a4, a5) \
- efi_call_phys(f, a1, a2, a3, a4, a5)
-#define efi_call_phys6(f, a1, a2, a3, a4, a5, a6) \
- efi_call_phys(f, a1, a2, a3, a4, a5, a6)
/*
* Wrap all the virtual calls in a way that forces the parameters on the stack.
*/
@@ -44,75 +34,27 @@ extern unsigned long asmlinkage efi_call_phys(void *, ...);
#define efi_call_virt(f, args...) \
((efi_##f##_t __attribute__((regparm(0)))*)efi.systab->runtime->f)(args)
-#define efi_call_virt0(f) efi_call_virt(f)
-#define efi_call_virt1(f, a1) efi_call_virt(f, a1)
-#define efi_call_virt2(f, a1, a2) efi_call_virt(f, a1, a2)
-#define efi_call_virt3(f, a1, a2, a3) efi_call_virt(f, a1, a2, a3)
-#define efi_call_virt4(f, a1, a2, a3, a4) \
- efi_call_virt(f, a1, a2, a3, a4)
-#define efi_call_virt5(f, a1, a2, a3, a4, a5) \
- efi_call_virt(f, a1, a2, a3, a4, a5)
-#define efi_call_virt6(f, a1, a2, a3, a4, a5, a6) \
- efi_call_virt(f, a1, a2, a3, a4, a5, a6)
-
#define efi_ioremap(addr, size, type, attr) ioremap_cache(addr, size)
#else /* !CONFIG_X86_32 */
-extern u64 efi_call0(void *fp);
-extern u64 efi_call1(void *fp, u64 arg1);
-extern u64 efi_call2(void *fp, u64 arg1, u64 arg2);
-extern u64 efi_call3(void *fp, u64 arg1, u64 arg2, u64 arg3);
-extern u64 efi_call4(void *fp, u64 arg1, u64 arg2, u64 arg3, u64 arg4);
-extern u64 efi_call5(void *fp, u64 arg1, u64 arg2, u64 arg3,
- u64 arg4, u64 arg5);
-extern u64 efi_call6(void *fp, u64 arg1, u64 arg2, u64 arg3,
- u64 arg4, u64 arg5, u64 arg6);
-
-#define efi_call_phys0(f) \
- efi_call0((f))
-#define efi_call_phys1(f, a1) \
- efi_call1((f), (u64)(a1))
-#define efi_call_phys2(f, a1, a2) \
- efi_call2((f), (u64)(a1), (u64)(a2))
-#define efi_call_phys3(f, a1, a2, a3) \
- efi_call3((f), (u64)(a1), (u64)(a2), (u64)(a3))
-#define efi_call_phys4(f, a1, a2, a3, a4) \
- efi_call4((f), (u64)(a1), (u64)(a2), (u64)(a3), \
- (u64)(a4))
-#define efi_call_phys5(f, a1, a2, a3, a4, a5) \
- efi_call5((f), (u64)(a1), (u64)(a2), (u64)(a3), \
- (u64)(a4), (u64)(a5))
-#define efi_call_phys6(f, a1, a2, a3, a4, a5, a6) \
- efi_call6((f), (u64)(a1), (u64)(a2), (u64)(a3), \
- (u64)(a4), (u64)(a5), (u64)(a6))
-
-#define _efi_call_virtX(x, f, ...) \
+#define EFI_LOADER_SIGNATURE "EL64"
+
+extern u64 asmlinkage efi_call(void *fp, ...);
+
+#define efi_call_phys(f, args...) efi_call((f), args)
+
+#define efi_call_virt(f, ...) \
({ \
efi_status_t __s; \
\
efi_sync_low_kernel_mappings(); \
preempt_disable(); \
- __s = efi_call##x((void *)efi.systab->runtime->f, __VA_ARGS__); \
+ __s = efi_call((void *)efi.systab->runtime->f, __VA_ARGS__); \
preempt_enable(); \
__s; \
})
-#define efi_call_virt0(f) \
- _efi_call_virtX(0, f)
-#define efi_call_virt1(f, a1) \
- _efi_call_virtX(1, f, (u64)(a1))
-#define efi_call_virt2(f, a1, a2) \
- _efi_call_virtX(2, f, (u64)(a1), (u64)(a2))
-#define efi_call_virt3(f, a1, a2, a3) \
- _efi_call_virtX(3, f, (u64)(a1), (u64)(a2), (u64)(a3))
-#define efi_call_virt4(f, a1, a2, a3, a4) \
- _efi_call_virtX(4, f, (u64)(a1), (u64)(a2), (u64)(a3), (u64)(a4))
-#define efi_call_virt5(f, a1, a2, a3, a4, a5) \
- _efi_call_virtX(5, f, (u64)(a1), (u64)(a2), (u64)(a3), (u64)(a4), (u64)(a5))
-#define efi_call_virt6(f, a1, a2, a3, a4, a5, a6) \
- _efi_call_virtX(6, f, (u64)(a1), (u64)(a2), (u64)(a3), (u64)(a4), (u64)(a5), (u64)(a6))
-
extern void __iomem *efi_ioremap(unsigned long addr, unsigned long size,
u32 type, u64 attribute);
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index 3781dd3..8f6531e 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -110,7 +110,7 @@ static efi_status_t virt_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc)
efi_status_t status;
spin_lock_irqsave(&rtc_lock, flags);
- status = efi_call_virt2(get_time, tm, tc);
+ status = efi_call_virt(get_time, tm, tc);
spin_unlock_irqrestore(&rtc_lock, flags);
return status;
}
@@ -121,7 +121,7 @@ static efi_status_t virt_efi_set_time(efi_time_t *tm)
efi_status_t status;
spin_lock_irqsave(&rtc_lock, flags);
- status = efi_call_virt1(set_time, tm);
+ status = efi_call_virt(set_time, tm);
spin_unlock_irqrestore(&rtc_lock, flags);
return status;
}
@@ -134,8 +134,7 @@ static efi_status_t virt_efi_get_wakeup_time(efi_bool_t *enabled,
efi_status_t status;
spin_lock_irqsave(&rtc_lock, flags);
- status = efi_call_virt3(get_wakeup_time,
- enabled, pending, tm);
+ status = efi_call_virt(get_wakeup_time, enabled, pending, tm);
spin_unlock_irqrestore(&rtc_lock, flags);
return status;
}
@@ -146,8 +145,7 @@ static efi_status_t virt_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm)
efi_status_t status;
spin_lock_irqsave(&rtc_lock, flags);
- status = efi_call_virt2(set_wakeup_time,
- enabled, tm);
+ status = efi_call_virt(set_wakeup_time, enabled, tm);
spin_unlock_irqrestore(&rtc_lock, flags);
return status;
}
@@ -158,17 +156,17 @@ static efi_status_t virt_efi_get_variable(efi_char16_t *name,
unsigned long *data_size,
void *data)
{
- return efi_call_virt5(get_variable,
- name, vendor, attr,
- data_size, data);
+ return efi_call_virt(get_variable,
+ name, vendor, attr,
+ data_size, data);
}
static efi_status_t virt_efi_get_next_variable(unsigned long *name_size,
efi_char16_t *name,
efi_guid_t *vendor)
{
- return efi_call_virt3(get_next_variable,
- name_size, name, vendor);
+ return efi_call_virt(get_next_variable,
+ name_size, name, vendor);
}
static efi_status_t virt_efi_set_variable(efi_char16_t *name,
@@ -177,9 +175,9 @@ static efi_status_t virt_efi_set_variable(efi_char16_t *name,
unsigned long data_size,
void *data)
{
- return efi_call_virt5(set_variable,
- name, vendor, attr,
- data_size, data);
+ return efi_call_virt(set_variable,
+ name, vendor, attr,
+ data_size, data);
}
static efi_status_t virt_efi_query_variable_info(u32 attr,
@@ -190,13 +188,13 @@ static efi_status_t virt_efi_query_variable_info(u32 attr,
if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
return EFI_UNSUPPORTED;
- return efi_call_virt4(query_variable_info, attr, storage_space,
- remaining_space, max_variable_size);
+ return efi_call_virt(query_variable_info, attr, storage_space,
+ remaining_space, max_variable_size);
}
static efi_status_t virt_efi_get_next_high_mono_count(u32 *count)
{
- return efi_call_virt1(get_next_high_mono_count, count);
+ return efi_call_virt(get_next_high_mono_count, count);
}
static void virt_efi_reset_system(int reset_type,
@@ -204,8 +202,8 @@ static void virt_efi_reset_system(int reset_type,
unsigned long data_size,
efi_char16_t *data)
{
- efi_call_virt4(reset_system, reset_type, status,
- data_size, data);
+ efi_call_virt(reset_system, reset_type, status,
+ data_size, data);
}
static efi_status_t virt_efi_update_capsule(efi_capsule_header_t **capsules,
@@ -215,7 +213,7 @@ static efi_status_t virt_efi_update_capsule(efi_capsule_header_t **capsules,
if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
return EFI_UNSUPPORTED;
- return efi_call_virt3(update_capsule, capsules, count, sg_list);
+ return efi_call_virt(update_capsule, capsules, count, sg_list);
}
static efi_status_t virt_efi_query_capsule_caps(efi_capsule_header_t **capsules,
@@ -226,8 +224,8 @@ static efi_status_t virt_efi_query_capsule_caps(efi_capsule_header_t **capsules,
if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
return EFI_UNSUPPORTED;
- return efi_call_virt4(query_capsule_caps, capsules, count, max_size,
- reset_type);
+ return efi_call_virt(query_capsule_caps, capsules, count, max_size,
+ reset_type);
}
static efi_status_t __init phys_efi_set_virtual_address_map(
@@ -239,9 +237,9 @@ static efi_status_t __init phys_efi_set_virtual_address_map(
efi_status_t status;
efi_call_phys_prelog();
- status = efi_call_phys4(efi_phys.set_virtual_address_map,
- memory_map_size, descriptor_size,
- descriptor_version, virtual_map);
+ status = efi_call_phys(efi_phys.set_virtual_address_map,
+ memory_map_size, descriptor_size,
+ descriptor_version, virtual_map);
efi_call_phys_epilog();
return status;
}
diff --git a/arch/x86/platform/efi/efi_stub_64.S b/arch/x86/platform/efi/efi_stub_64.S
index e0984ef..5fcda72 100644
--- a/arch/x86/platform/efi/efi_stub_64.S
+++ b/arch/x86/platform/efi/efi_stub_64.S
@@ -73,84 +73,7 @@
2:
.endm
-ENTRY(efi_call0)
- SAVE_XMM
- subq $32, %rsp
- SWITCH_PGT
- call *%rdi
- RESTORE_PGT
- addq $32, %rsp
- RESTORE_XMM
- ret
-ENDPROC(efi_call0)
-
-ENTRY(efi_call1)
- SAVE_XMM
- subq $32, %rsp
- mov %rsi, %rcx
- SWITCH_PGT
- call *%rdi
- RESTORE_PGT
- addq $32, %rsp
- RESTORE_XMM
- ret
-ENDPROC(efi_call1)
-
-ENTRY(efi_call2)
- SAVE_XMM
- subq $32, %rsp
- mov %rsi, %rcx
- SWITCH_PGT
- call *%rdi
- RESTORE_PGT
- addq $32, %rsp
- RESTORE_XMM
- ret
-ENDPROC(efi_call2)
-
-ENTRY(efi_call3)
- SAVE_XMM
- subq $32, %rsp
- mov %rcx, %r8
- mov %rsi, %rcx
- SWITCH_PGT
- call *%rdi
- RESTORE_PGT
- addq $32, %rsp
- RESTORE_XMM
- ret
-ENDPROC(efi_call3)
-
-ENTRY(efi_call4)
- SAVE_XMM
- subq $32, %rsp
- mov %r8, %r9
- mov %rcx, %r8
- mov %rsi, %rcx
- SWITCH_PGT
- call *%rdi
- RESTORE_PGT
- addq $32, %rsp
- RESTORE_XMM
- ret
-ENDPROC(efi_call4)
-
-ENTRY(efi_call5)
- SAVE_XMM
- subq $48, %rsp
- mov %r9, 32(%rsp)
- mov %r8, %r9
- mov %rcx, %r8
- mov %rsi, %rcx
- SWITCH_PGT
- call *%rdi
- RESTORE_PGT
- addq $48, %rsp
- RESTORE_XMM
- ret
-ENDPROC(efi_call5)
-
-ENTRY(efi_call6)
+ENTRY(efi_call)
SAVE_XMM
mov (%rsp), %rax
mov 8(%rax), %rax
@@ -166,7 +89,7 @@ ENTRY(efi_call6)
addq $48, %rsp
RESTORE_XMM
ret
-ENDPROC(efi_call6)
+ENDPROC(efi_call)
#ifdef CONFIG_EFI_MIXED
diff --git a/arch/x86/platform/uv/bios_uv.c b/arch/x86/platform/uv/bios_uv.c
index 7666121..1584cbe 100644
--- a/arch/x86/platform/uv/bios_uv.c
+++ b/arch/x86/platform/uv/bios_uv.c
@@ -39,7 +39,7 @@ s64 uv_bios_call(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3, u64 a4, u64 a5)
*/
return BIOS_STATUS_UNIMPLEMENTED;
- ret = efi_call6((void *)__va(tab->function), (u64)which,
+ ret = efi_call((void *)__va(tab->function), (u64)which,
a1, a2, a3, a4, a5);
return ret;
}
--
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