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@linux.intel.com> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Matt Fleming <matt.fleming@intel.com>
This commit is contained in:
Matt Fleming
Родитель
c625d1c203
Коммит
62fa6e69a4
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@ -452,7 +452,7 @@ efi32_config:
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.global efi64_config
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efi64_config:
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.fill 11,8,0
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.quad efi_call6
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.quad efi_call
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.byte 1
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#endif /* CONFIG_EFI_STUB */
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@ -27,16 +27,6 @@
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extern unsigned long asmlinkage efi_call_phys(void *, ...);
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#define efi_call_phys0(f) efi_call_phys(f)
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#define efi_call_phys1(f, a1) efi_call_phys(f, a1)
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#define efi_call_phys2(f, a1, a2) efi_call_phys(f, a1, a2)
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#define efi_call_phys3(f, a1, a2, a3) efi_call_phys(f, a1, a2, a3)
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#define efi_call_phys4(f, a1, a2, a3, a4) \
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efi_call_phys(f, a1, a2, a3, a4)
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#define efi_call_phys5(f, a1, a2, a3, a4, a5) \
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efi_call_phys(f, a1, a2, a3, a4, a5)
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#define efi_call_phys6(f, a1, a2, a3, a4, a5, a6) \
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efi_call_phys(f, a1, a2, a3, a4, a5, a6)
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/*
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* Wrap all the virtual calls in a way that forces the parameters on the stack.
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*/
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@ -44,75 +34,27 @@ extern unsigned long asmlinkage efi_call_phys(void *, ...);
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#define efi_call_virt(f, args...) \
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((efi_##f##_t __attribute__((regparm(0)))*)efi.systab->runtime->f)(args)
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#define efi_call_virt0(f) efi_call_virt(f)
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#define efi_call_virt1(f, a1) efi_call_virt(f, a1)
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#define efi_call_virt2(f, a1, a2) efi_call_virt(f, a1, a2)
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#define efi_call_virt3(f, a1, a2, a3) efi_call_virt(f, a1, a2, a3)
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#define efi_call_virt4(f, a1, a2, a3, a4) \
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efi_call_virt(f, a1, a2, a3, a4)
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#define efi_call_virt5(f, a1, a2, a3, a4, a5) \
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efi_call_virt(f, a1, a2, a3, a4, a5)
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#define efi_call_virt6(f, a1, a2, a3, a4, a5, a6) \
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efi_call_virt(f, a1, a2, a3, a4, a5, a6)
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#define efi_ioremap(addr, size, type, attr) ioremap_cache(addr, size)
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#else /* !CONFIG_X86_32 */
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extern u64 efi_call0(void *fp);
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extern u64 efi_call1(void *fp, u64 arg1);
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extern u64 efi_call2(void *fp, u64 arg1, u64 arg2);
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extern u64 efi_call3(void *fp, u64 arg1, u64 arg2, u64 arg3);
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extern u64 efi_call4(void *fp, u64 arg1, u64 arg2, u64 arg3, u64 arg4);
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extern u64 efi_call5(void *fp, u64 arg1, u64 arg2, u64 arg3,
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u64 arg4, u64 arg5);
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extern u64 efi_call6(void *fp, u64 arg1, u64 arg2, u64 arg3,
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u64 arg4, u64 arg5, u64 arg6);
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#define EFI_LOADER_SIGNATURE "EL64"
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#define efi_call_phys0(f) \
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efi_call0((f))
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#define efi_call_phys1(f, a1) \
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efi_call1((f), (u64)(a1))
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#define efi_call_phys2(f, a1, a2) \
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efi_call2((f), (u64)(a1), (u64)(a2))
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#define efi_call_phys3(f, a1, a2, a3) \
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efi_call3((f), (u64)(a1), (u64)(a2), (u64)(a3))
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#define efi_call_phys4(f, a1, a2, a3, a4) \
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efi_call4((f), (u64)(a1), (u64)(a2), (u64)(a3), \
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(u64)(a4))
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#define efi_call_phys5(f, a1, a2, a3, a4, a5) \
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efi_call5((f), (u64)(a1), (u64)(a2), (u64)(a3), \
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(u64)(a4), (u64)(a5))
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#define efi_call_phys6(f, a1, a2, a3, a4, a5, a6) \
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efi_call6((f), (u64)(a1), (u64)(a2), (u64)(a3), \
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(u64)(a4), (u64)(a5), (u64)(a6))
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extern u64 asmlinkage efi_call(void *fp, ...);
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#define _efi_call_virtX(x, f, ...) \
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#define efi_call_phys(f, args...) efi_call((f), args)
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#define efi_call_virt(f, ...) \
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({ \
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efi_status_t __s; \
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\
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efi_sync_low_kernel_mappings(); \
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preempt_disable(); \
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__s = efi_call##x((void *)efi.systab->runtime->f, __VA_ARGS__); \
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__s = efi_call((void *)efi.systab->runtime->f, __VA_ARGS__); \
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preempt_enable(); \
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__s; \
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})
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#define efi_call_virt0(f) \
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_efi_call_virtX(0, f)
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#define efi_call_virt1(f, a1) \
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_efi_call_virtX(1, f, (u64)(a1))
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#define efi_call_virt2(f, a1, a2) \
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_efi_call_virtX(2, f, (u64)(a1), (u64)(a2))
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#define efi_call_virt3(f, a1, a2, a3) \
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_efi_call_virtX(3, f, (u64)(a1), (u64)(a2), (u64)(a3))
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#define efi_call_virt4(f, a1, a2, a3, a4) \
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_efi_call_virtX(4, f, (u64)(a1), (u64)(a2), (u64)(a3), (u64)(a4))
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#define efi_call_virt5(f, a1, a2, a3, a4, a5) \
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_efi_call_virtX(5, f, (u64)(a1), (u64)(a2), (u64)(a3), (u64)(a4), (u64)(a5))
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#define efi_call_virt6(f, a1, a2, a3, a4, a5, a6) \
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_efi_call_virtX(6, f, (u64)(a1), (u64)(a2), (u64)(a3), (u64)(a4), (u64)(a5), (u64)(a6))
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extern void __iomem *efi_ioremap(unsigned long addr, unsigned long size,
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u32 type, u64 attribute);
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@ -110,7 +110,7 @@ static efi_status_t virt_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc)
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efi_status_t status;
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spin_lock_irqsave(&rtc_lock, flags);
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status = efi_call_virt2(get_time, tm, tc);
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status = efi_call_virt(get_time, tm, tc);
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spin_unlock_irqrestore(&rtc_lock, flags);
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return status;
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}
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@ -121,7 +121,7 @@ static efi_status_t virt_efi_set_time(efi_time_t *tm)
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efi_status_t status;
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spin_lock_irqsave(&rtc_lock, flags);
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status = efi_call_virt1(set_time, tm);
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status = efi_call_virt(set_time, tm);
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spin_unlock_irqrestore(&rtc_lock, flags);
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return status;
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}
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@ -134,8 +134,7 @@ static efi_status_t virt_efi_get_wakeup_time(efi_bool_t *enabled,
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efi_status_t status;
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spin_lock_irqsave(&rtc_lock, flags);
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status = efi_call_virt3(get_wakeup_time,
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enabled, pending, tm);
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status = efi_call_virt(get_wakeup_time, enabled, pending, tm);
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spin_unlock_irqrestore(&rtc_lock, flags);
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return status;
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}
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@ -146,8 +145,7 @@ static efi_status_t virt_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm)
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efi_status_t status;
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spin_lock_irqsave(&rtc_lock, flags);
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status = efi_call_virt2(set_wakeup_time,
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enabled, tm);
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status = efi_call_virt(set_wakeup_time, enabled, tm);
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spin_unlock_irqrestore(&rtc_lock, flags);
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return status;
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}
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@ -158,7 +156,7 @@ static efi_status_t virt_efi_get_variable(efi_char16_t *name,
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unsigned long *data_size,
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void *data)
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{
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return efi_call_virt5(get_variable,
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return efi_call_virt(get_variable,
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name, vendor, attr,
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data_size, data);
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}
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@ -167,7 +165,7 @@ static efi_status_t virt_efi_get_next_variable(unsigned long *name_size,
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efi_char16_t *name,
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efi_guid_t *vendor)
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{
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return efi_call_virt3(get_next_variable,
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return efi_call_virt(get_next_variable,
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name_size, name, vendor);
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}
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@ -177,7 +175,7 @@ static efi_status_t virt_efi_set_variable(efi_char16_t *name,
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unsigned long data_size,
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void *data)
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{
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return efi_call_virt5(set_variable,
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return efi_call_virt(set_variable,
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name, vendor, attr,
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data_size, data);
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}
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@ -190,13 +188,13 @@ static efi_status_t virt_efi_query_variable_info(u32 attr,
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if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
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return EFI_UNSUPPORTED;
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return efi_call_virt4(query_variable_info, attr, storage_space,
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return efi_call_virt(query_variable_info, attr, storage_space,
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remaining_space, max_variable_size);
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}
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static efi_status_t virt_efi_get_next_high_mono_count(u32 *count)
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{
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return efi_call_virt1(get_next_high_mono_count, count);
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return efi_call_virt(get_next_high_mono_count, count);
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}
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static void virt_efi_reset_system(int reset_type,
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@ -204,7 +202,7 @@ static void virt_efi_reset_system(int reset_type,
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unsigned long data_size,
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efi_char16_t *data)
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{
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efi_call_virt4(reset_system, reset_type, status,
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efi_call_virt(reset_system, reset_type, status,
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data_size, data);
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}
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@ -215,7 +213,7 @@ static efi_status_t virt_efi_update_capsule(efi_capsule_header_t **capsules,
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if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
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return EFI_UNSUPPORTED;
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return efi_call_virt3(update_capsule, capsules, count, sg_list);
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return efi_call_virt(update_capsule, capsules, count, sg_list);
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}
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static efi_status_t virt_efi_query_capsule_caps(efi_capsule_header_t **capsules,
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@ -226,7 +224,7 @@ static efi_status_t virt_efi_query_capsule_caps(efi_capsule_header_t **capsules,
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if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
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return EFI_UNSUPPORTED;
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return efi_call_virt4(query_capsule_caps, capsules, count, max_size,
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return efi_call_virt(query_capsule_caps, capsules, count, max_size,
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reset_type);
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}
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@ -239,7 +237,7 @@ static efi_status_t __init phys_efi_set_virtual_address_map(
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efi_status_t status;
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efi_call_phys_prelog();
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status = efi_call_phys4(efi_phys.set_virtual_address_map,
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status = efi_call_phys(efi_phys.set_virtual_address_map,
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memory_map_size, descriptor_size,
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descriptor_version, virtual_map);
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efi_call_phys_epilog();
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@ -73,84 +73,7 @@
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2:
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.endm
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ENTRY(efi_call0)
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SAVE_XMM
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subq $32, %rsp
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SWITCH_PGT
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call *%rdi
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RESTORE_PGT
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addq $32, %rsp
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RESTORE_XMM
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ret
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ENDPROC(efi_call0)
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ENTRY(efi_call1)
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SAVE_XMM
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subq $32, %rsp
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mov %rsi, %rcx
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SWITCH_PGT
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call *%rdi
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RESTORE_PGT
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addq $32, %rsp
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RESTORE_XMM
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ret
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ENDPROC(efi_call1)
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ENTRY(efi_call2)
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SAVE_XMM
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subq $32, %rsp
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mov %rsi, %rcx
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SWITCH_PGT
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call *%rdi
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RESTORE_PGT
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addq $32, %rsp
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RESTORE_XMM
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ret
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ENDPROC(efi_call2)
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ENTRY(efi_call3)
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SAVE_XMM
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subq $32, %rsp
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mov %rcx, %r8
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mov %rsi, %rcx
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SWITCH_PGT
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call *%rdi
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RESTORE_PGT
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addq $32, %rsp
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RESTORE_XMM
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ret
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ENDPROC(efi_call3)
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ENTRY(efi_call4)
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SAVE_XMM
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subq $32, %rsp
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mov %r8, %r9
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mov %rcx, %r8
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mov %rsi, %rcx
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SWITCH_PGT
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call *%rdi
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RESTORE_PGT
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addq $32, %rsp
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RESTORE_XMM
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ret
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ENDPROC(efi_call4)
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ENTRY(efi_call5)
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SAVE_XMM
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subq $48, %rsp
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mov %r9, 32(%rsp)
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mov %r8, %r9
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mov %rcx, %r8
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mov %rsi, %rcx
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SWITCH_PGT
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call *%rdi
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RESTORE_PGT
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addq $48, %rsp
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RESTORE_XMM
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ret
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ENDPROC(efi_call5)
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ENTRY(efi_call6)
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ENTRY(efi_call)
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SAVE_XMM
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mov (%rsp), %rax
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mov 8(%rax), %rax
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@ -166,7 +89,7 @@ ENTRY(efi_call6)
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addq $48, %rsp
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RESTORE_XMM
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ret
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ENDPROC(efi_call6)
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ENDPROC(efi_call)
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#ifdef CONFIG_EFI_MIXED
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@ -39,7 +39,7 @@ s64 uv_bios_call(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3, u64 a4, u64 a5)
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*/
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return BIOS_STATUS_UNIMPLEMENTED;
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ret = efi_call6((void *)__va(tab->function), (u64)which,
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ret = efi_call((void *)__va(tab->function), (u64)which,
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a1, a2, a3, a4, a5);
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return ret;
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}
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