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[edk2] [PATCH v3 1/6] ArmPlatformPkg/ArmShellCmdRunAxf: remove BdsLib dependency

Ard Biesheuvel posted 6 patches 8 years, 10 months ago
There is a newer version of this series
[edk2] [PATCH v3 1/6] ArmPlatformPkg/ArmShellCmdRunAxf: remove BdsLib dependency
Posted by Ard Biesheuvel 8 years, 10 months ago 
Remove ArmShellCmdRunAxf's dependency on the deprecated BdsLib by
cloning the ShutdownUefiBootServices() routine into a local source
file; this is the only BdsLib feature 'runaxf' depends on.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
 ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf |  1 -
 ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c              | 58 +++++++++++++++++++-
 2 files changed, 57 insertions(+), 2 deletions(-)

diff --git a/ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf b/ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf
index 9a34f666612a..7d15f6934608 100644
--- a/ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf
+++ b/ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf
@@ -43,7 +43,6 @@ [Packages]
 [LibraryClasses]
   ArmLib
   BaseLib
-  BdsLib
   DebugLib
   HiiLib
   ShellLib
diff --git a/ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c b/ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c
index 2abfb6cc1053..9f4fc780307d 100644
--- a/ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c
+++ b/ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c
@@ -21,7 +21,6 @@
 #include <Library/DevicePathLib.h>
 #include <Library/BaseLib.h>
 #include <Library/BaseMemoryLib.h>
-#include <Library/BdsLib.h>
 #include <Library/MemoryAllocationLib.h>
 #include <Library/DebugLib.h>
 
@@ -35,6 +34,63 @@
 typedef VOID (*ELF_ENTRYPOINT)(UINTN arg0, UINTN arg1,
                                UINTN arg2, UINTN arg3);
 
+STATIC
+EFI_STATUS
+ShutdownUefiBootServices (
+  VOID
+  )
+{
+  EFI_STATUS              Status;
+  UINTN                   MemoryMapSize;
+  EFI_MEMORY_DESCRIPTOR   *MemoryMap;
+  UINTN                   MapKey;
+  UINTN                   DescriptorSize;
+  UINT32                  DescriptorVersion;
+  UINTN                   Pages;
+
+  MemoryMap = NULL;
+  MemoryMapSize = 0;
+  Pages = 0;
+
+  do {
+    Status = gBS->GetMemoryMap (
+                    &MemoryMapSize,
+                    MemoryMap,
+                    &MapKey,
+                    &DescriptorSize,
+                    &DescriptorVersion
+                    );
+    if (Status == EFI_BUFFER_TOO_SMALL) {
+
+      Pages = EFI_SIZE_TO_PAGES (MemoryMapSize) + 1;
+      MemoryMap = AllocatePages (Pages);
+
+      //
+      // Get System MemoryMap
+      //
+      Status = gBS->GetMemoryMap (
+                      &MemoryMapSize,
+                      MemoryMap,
+                      &MapKey,
+                      &DescriptorSize,
+                      &DescriptorVersion
+                      );
+    }
+
+    // Don't do anything between the GetMemoryMap() and ExitBootServices()
+    if (!EFI_ERROR(Status)) {
+      Status = gBS->ExitBootServices (gImageHandle, MapKey);
+      if (EFI_ERROR(Status)) {
+        FreePages (MemoryMap, Pages);
+        MemoryMap = NULL;
+        MemoryMapSize = 0;
+      }
+    }
+  } while (EFI_ERROR(Status));
+
+  return Status;
+}
+
 
 STATIC
 EFI_STATUS
-- 
2.9.3

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Re: [edk2] [PATCH v3 1/6] ArmPlatformPkg/ArmShellCmdRunAxf: remove BdsLib dependency
Posted by Leif Lindholm 8 years, 10 months ago 
On Tue, Apr 04, 2017 at 01:30:05PM +0100, Ard Biesheuvel wrote:
> Remove ArmShellCmdRunAxf's dependency on the deprecated BdsLib by
> cloning the ShutdownUefiBootServices() routine into a local source
> file; this is the only BdsLib feature 'runaxf' depends on.

I was going to go through these individually and give a R-b for the
whole series at the end if I didn't come across anything, but I'd just
like to add for this one:

This is abslutely the right thing to do - BdsLib only had this
functionality due to the LinuxLoader, and it could be deleted now (but
I guess we're planning to get rid of the whole thing?).

Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>

> 
> Contributed-under: TianoCore Contribution Agreement 1.0
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
> ---
>  ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf |  1 -
>  ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c              | 58 +++++++++++++++++++-
>  2 files changed, 57 insertions(+), 2 deletions(-)
> 
> diff --git a/ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf b/ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf
> index 9a34f666612a..7d15f6934608 100644
> --- a/ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf
> +++ b/ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf
> @@ -43,7 +43,6 @@ [Packages]
>  [LibraryClasses]
>    ArmLib
>    BaseLib
> -  BdsLib
>    DebugLib
>    HiiLib
>    ShellLib
> diff --git a/ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c b/ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c
> index 2abfb6cc1053..9f4fc780307d 100644
> --- a/ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c
> +++ b/ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c
> @@ -21,7 +21,6 @@
>  #include <Library/DevicePathLib.h>
>  #include <Library/BaseLib.h>
>  #include <Library/BaseMemoryLib.h>
> -#include <Library/BdsLib.h>
>  #include <Library/MemoryAllocationLib.h>
>  #include <Library/DebugLib.h>
>  
> @@ -35,6 +34,63 @@
>  typedef VOID (*ELF_ENTRYPOINT)(UINTN arg0, UINTN arg1,
>                                 UINTN arg2, UINTN arg3);
>  
> +STATIC
> +EFI_STATUS
> +ShutdownUefiBootServices (
> +  VOID
> +  )
> +{
> +  EFI_STATUS              Status;
> +  UINTN                   MemoryMapSize;
> +  EFI_MEMORY_DESCRIPTOR   *MemoryMap;
> +  UINTN                   MapKey;
> +  UINTN                   DescriptorSize;
> +  UINT32                  DescriptorVersion;
> +  UINTN                   Pages;
> +
> +  MemoryMap = NULL;
> +  MemoryMapSize = 0;
> +  Pages = 0;
> +
> +  do {
> +    Status = gBS->GetMemoryMap (
> +                    &MemoryMapSize,
> +                    MemoryMap,
> +                    &MapKey,
> +                    &DescriptorSize,
> +                    &DescriptorVersion
> +                    );
> +    if (Status == EFI_BUFFER_TOO_SMALL) {
> +
> +      Pages = EFI_SIZE_TO_PAGES (MemoryMapSize) + 1;
> +      MemoryMap = AllocatePages (Pages);
> +
> +      //
> +      // Get System MemoryMap
> +      //
> +      Status = gBS->GetMemoryMap (
> +                      &MemoryMapSize,
> +                      MemoryMap,
> +                      &MapKey,
> +                      &DescriptorSize,
> +                      &DescriptorVersion
> +                      );
> +    }
> +
> +    // Don't do anything between the GetMemoryMap() and ExitBootServices()
> +    if (!EFI_ERROR(Status)) {
> +      Status = gBS->ExitBootServices (gImageHandle, MapKey);
> +      if (EFI_ERROR(Status)) {
> +        FreePages (MemoryMap, Pages);
> +        MemoryMap = NULL;
> +        MemoryMapSize = 0;
> +      }
> +    }
> +  } while (EFI_ERROR(Status));
> +
> +  return Status;
> +}
> +
>  
>  STATIC
>  EFI_STATUS
> -- 
> 2.9.3
> 
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Re: [edk2] [PATCH v3 1/6] ArmPlatformPkg/ArmShellCmdRunAxf: remove BdsLib dependency
Posted by Ard Biesheuvel 8 years, 10 months ago 
On 5 April 2017 at 14:09, Leif Lindholm <leif.lindholm@linaro.org> wrote:
> On Tue, Apr 04, 2017 at 01:30:05PM +0100, Ard Biesheuvel wrote:
>> Remove ArmShellCmdRunAxf's dependency on the deprecated BdsLib by
>> cloning the ShutdownUefiBootServices() routine into a local source
>> file; this is the only BdsLib feature 'runaxf' depends on.
>
> I was going to go through these individually and give a R-b for the
> whole series at the end if I didn't come across anything, but I'd just
> like to add for this one:
>
> This is abslutely the right thing to do - BdsLib only had this
> functionality due to the LinuxLoader, and it could be deleted now (but
> I guess we're planning to get rid of the whole thing?).
>

I'd like to avoid doing any 'improvements' to BdsLib while it's on its
way you -- once AndroidFastBootApp is the last remaining user, we can
fold whatever it uses into it instead.


> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
>

Thanks

>>
>> Contributed-under: TianoCore Contribution Agreement 1.0
>> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
>> ---
>>  ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf |  1 -
>>  ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c              | 58 +++++++++++++++++++-
>>  2 files changed, 57 insertions(+), 2 deletions(-)
>>
>> diff --git a/ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf b/ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf
>> index 9a34f666612a..7d15f6934608 100644
>> --- a/ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf
>> +++ b/ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf
>> @@ -43,7 +43,6 @@ [Packages]
>>  [LibraryClasses]
>>    ArmLib
>>    BaseLib
>> -  BdsLib
>>    DebugLib
>>    HiiLib
>>    ShellLib
>> diff --git a/ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c b/ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c
>> index 2abfb6cc1053..9f4fc780307d 100644
>> --- a/ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c
>> +++ b/ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c
>> @@ -21,7 +21,6 @@
>>  #include <Library/DevicePathLib.h>
>>  #include <Library/BaseLib.h>
>>  #include <Library/BaseMemoryLib.h>
>> -#include <Library/BdsLib.h>
>>  #include <Library/MemoryAllocationLib.h>
>>  #include <Library/DebugLib.h>
>>
>> @@ -35,6 +34,63 @@
>>  typedef VOID (*ELF_ENTRYPOINT)(UINTN arg0, UINTN arg1,
>>                                 UINTN arg2, UINTN arg3);
>>
>> +STATIC
>> +EFI_STATUS
>> +ShutdownUefiBootServices (
>> +  VOID
>> +  )
>> +{
>> +  EFI_STATUS              Status;
>> +  UINTN                   MemoryMapSize;
>> +  EFI_MEMORY_DESCRIPTOR   *MemoryMap;
>> +  UINTN                   MapKey;
>> +  UINTN                   DescriptorSize;
>> +  UINT32                  DescriptorVersion;
>> +  UINTN                   Pages;
>> +
>> +  MemoryMap = NULL;
>> +  MemoryMapSize = 0;
>> +  Pages = 0;
>> +
>> +  do {
>> +    Status = gBS->GetMemoryMap (
>> +                    &MemoryMapSize,
>> +                    MemoryMap,
>> +                    &MapKey,
>> +                    &DescriptorSize,
>> +                    &DescriptorVersion
>> +                    );
>> +    if (Status == EFI_BUFFER_TOO_SMALL) {
>> +
>> +      Pages = EFI_SIZE_TO_PAGES (MemoryMapSize) + 1;
>> +      MemoryMap = AllocatePages (Pages);
>> +
>> +      //
>> +      // Get System MemoryMap
>> +      //
>> +      Status = gBS->GetMemoryMap (
>> +                      &MemoryMapSize,
>> +                      MemoryMap,
>> +                      &MapKey,
>> +                      &DescriptorSize,
>> +                      &DescriptorVersion
>> +                      );
>> +    }
>> +
>> +    // Don't do anything between the GetMemoryMap() and ExitBootServices()
>> +    if (!EFI_ERROR(Status)) {
>> +      Status = gBS->ExitBootServices (gImageHandle, MapKey);
>> +      if (EFI_ERROR(Status)) {
>> +        FreePages (MemoryMap, Pages);
>> +        MemoryMap = NULL;
>> +        MemoryMapSize = 0;
>> +      }
>> +    }
>> +  } while (EFI_ERROR(Status));
>> +
>> +  return Status;
>> +}
>> +
>>
>>  STATIC
>>  EFI_STATUS
>> --
>> 2.9.3
>>
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Re: [edk2] [PATCH v3 1/6] ArmPlatformPkg/ArmShellCmdRunAxf: remove BdsLib dependency
Posted by Ard Biesheuvel 8 years, 10 months ago 
On 5 April 2017 at 14:11, Ard Biesheuvel <ard.biesheuvel@linaro.org> wrote:
> On 5 April 2017 at 14:09, Leif Lindholm <leif.lindholm@linaro.org> wrote:
>> On Tue, Apr 04, 2017 at 01:30:05PM +0100, Ard Biesheuvel wrote:
>>> Remove ArmShellCmdRunAxf's dependency on the deprecated BdsLib by
>>> cloning the ShutdownUefiBootServices() routine into a local source
>>> file; this is the only BdsLib feature 'runaxf' depends on.
>>
>> I was going to go through these individually and give a R-b for the
>> whole series at the end if I didn't come across anything, but I'd just
>> like to add for this one:
>>
>> This is abslutely the right thing to do - BdsLib only had this
>> functionality due to the LinuxLoader, and it could be deleted now (but
>> I guess we're planning to get rid of the whole thing?).
>>
>
> I'd like to avoid doing any 'improvements' to BdsLib while it's on its
> way you

way *out*

> -- once AndroidFastBootApp is the last remaining user, we can
> fold whatever it uses into it instead.
>
>
>> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
>>
>
> Thanks
>
>>>
>>> Contributed-under: TianoCore Contribution Agreement 1.0
>>> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
>>> ---
>>>  ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf |  1 -
>>>  ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c              | 58 +++++++++++++++++++-
>>>  2 files changed, 57 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf b/ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf
>>> index 9a34f666612a..7d15f6934608 100644
>>> --- a/ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf
>>> +++ b/ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf
>>> @@ -43,7 +43,6 @@ [Packages]
>>>  [LibraryClasses]
>>>    ArmLib
>>>    BaseLib
>>> -  BdsLib
>>>    DebugLib
>>>    HiiLib
>>>    ShellLib
>>> diff --git a/ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c b/ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c
>>> index 2abfb6cc1053..9f4fc780307d 100644
>>> --- a/ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c
>>> +++ b/ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c
>>> @@ -21,7 +21,6 @@
>>>  #include <Library/DevicePathLib.h>
>>>  #include <Library/BaseLib.h>
>>>  #include <Library/BaseMemoryLib.h>
>>> -#include <Library/BdsLib.h>
>>>  #include <Library/MemoryAllocationLib.h>
>>>  #include <Library/DebugLib.h>
>>>
>>> @@ -35,6 +34,63 @@
>>>  typedef VOID (*ELF_ENTRYPOINT)(UINTN arg0, UINTN arg1,
>>>                                 UINTN arg2, UINTN arg3);
>>>
>>> +STATIC
>>> +EFI_STATUS
>>> +ShutdownUefiBootServices (
>>> +  VOID
>>> +  )
>>> +{
>>> +  EFI_STATUS              Status;
>>> +  UINTN                   MemoryMapSize;
>>> +  EFI_MEMORY_DESCRIPTOR   *MemoryMap;
>>> +  UINTN                   MapKey;
>>> +  UINTN                   DescriptorSize;
>>> +  UINT32                  DescriptorVersion;
>>> +  UINTN                   Pages;
>>> +
>>> +  MemoryMap = NULL;
>>> +  MemoryMapSize = 0;
>>> +  Pages = 0;
>>> +
>>> +  do {
>>> +    Status = gBS->GetMemoryMap (
>>> +                    &MemoryMapSize,
>>> +                    MemoryMap,
>>> +                    &MapKey,
>>> +                    &DescriptorSize,
>>> +                    &DescriptorVersion
>>> +                    );
>>> +    if (Status == EFI_BUFFER_TOO_SMALL) {
>>> +
>>> +      Pages = EFI_SIZE_TO_PAGES (MemoryMapSize) + 1;
>>> +      MemoryMap = AllocatePages (Pages);
>>> +
>>> +      //
>>> +      // Get System MemoryMap
>>> +      //
>>> +      Status = gBS->GetMemoryMap (
>>> +                      &MemoryMapSize,
>>> +                      MemoryMap,
>>> +                      &MapKey,
>>> +                      &DescriptorSize,
>>> +                      &DescriptorVersion
>>> +                      );
>>> +    }
>>> +
>>> +    // Don't do anything between the GetMemoryMap() and ExitBootServices()
>>> +    if (!EFI_ERROR(Status)) {
>>> +      Status = gBS->ExitBootServices (gImageHandle, MapKey);
>>> +      if (EFI_ERROR(Status)) {
>>> +        FreePages (MemoryMap, Pages);
>>> +        MemoryMap = NULL;
>>> +        MemoryMapSize = 0;
>>> +      }
>>> +    }
>>> +  } while (EFI_ERROR(Status));
>>> +
>>> +  return Status;
>>> +}
>>> +
>>>
>>>  STATIC
>>>  EFI_STATUS
>>> --
>>> 2.9.3
>>>
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Re: [edk2] [PATCH v3 1/6] ArmPlatformPkg/ArmShellCmdRunAxf: remove BdsLib dependency
Posted by Leif Lindholm 8 years, 10 months ago 
On Wed, Apr 05, 2017 at 02:11:44PM +0100, Ard Biesheuvel wrote:
> On 5 April 2017 at 14:09, Leif Lindholm <leif.lindholm@linaro.org> wrote:
> > On Tue, Apr 04, 2017 at 01:30:05PM +0100, Ard Biesheuvel wrote:
> >> Remove ArmShellCmdRunAxf's dependency on the deprecated BdsLib by
> >> cloning the ShutdownUefiBootServices() routine into a local source
> >> file; this is the only BdsLib feature 'runaxf' depends on.
> >
> > I was going to go through these individually and give a R-b for the
> > whole series at the end if I didn't come across anything, but I'd just
> > like to add for this one:
> >
> > This is abslutely the right thing to do - BdsLib only had this
> > functionality due to the LinuxLoader, and it could be deleted now (but
> > I guess we're planning to get rid of the whole thing?).
> >
> 
> I'd like to avoid doing any 'improvements' to BdsLib while it's on its
> way you -- once AndroidFastBootApp is the last remaining user, we can
> fold whatever it uses into it instead.

Agreed - thanks!

/
    Leif

> > Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
> >
> 
> Thanks
> 
> >>
> >> Contributed-under: TianoCore Contribution Agreement 1.0
> >> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
> >> ---
> >>  ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf |  1 -
> >>  ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c              | 58 +++++++++++++++++++-
> >>  2 files changed, 57 insertions(+), 2 deletions(-)
> >>
> >> diff --git a/ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf b/ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf
> >> index 9a34f666612a..7d15f6934608 100644
> >> --- a/ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf
> >> +++ b/ArmPlatformPkg/Library/ArmShellCmdRunAxf/ArmShellCmdRunAxf.inf
> >> @@ -43,7 +43,6 @@ [Packages]
> >>  [LibraryClasses]
> >>    ArmLib
> >>    BaseLib
> >> -  BdsLib
> >>    DebugLib
> >>    HiiLib
> >>    ShellLib
> >> diff --git a/ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c b/ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c
> >> index 2abfb6cc1053..9f4fc780307d 100644
> >> --- a/ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c
> >> +++ b/ArmPlatformPkg/Library/ArmShellCmdRunAxf/RunAxf.c
> >> @@ -21,7 +21,6 @@
> >>  #include <Library/DevicePathLib.h>
> >>  #include <Library/BaseLib.h>
> >>  #include <Library/BaseMemoryLib.h>
> >> -#include <Library/BdsLib.h>
> >>  #include <Library/MemoryAllocationLib.h>
> >>  #include <Library/DebugLib.h>
> >>
> >> @@ -35,6 +34,63 @@
> >>  typedef VOID (*ELF_ENTRYPOINT)(UINTN arg0, UINTN arg1,
> >>                                 UINTN arg2, UINTN arg3);
> >>
> >> +STATIC
> >> +EFI_STATUS
> >> +ShutdownUefiBootServices (
> >> +  VOID
> >> +  )
> >> +{
> >> +  EFI_STATUS              Status;
> >> +  UINTN                   MemoryMapSize;
> >> +  EFI_MEMORY_DESCRIPTOR   *MemoryMap;
> >> +  UINTN                   MapKey;
> >> +  UINTN                   DescriptorSize;
> >> +  UINT32                  DescriptorVersion;
> >> +  UINTN                   Pages;
> >> +
> >> +  MemoryMap = NULL;
> >> +  MemoryMapSize = 0;
> >> +  Pages = 0;
> >> +
> >> +  do {
> >> +    Status = gBS->GetMemoryMap (
> >> +                    &MemoryMapSize,
> >> +                    MemoryMap,
> >> +                    &MapKey,
> >> +                    &DescriptorSize,
> >> +                    &DescriptorVersion
> >> +                    );
> >> +    if (Status == EFI_BUFFER_TOO_SMALL) {
> >> +
> >> +      Pages = EFI_SIZE_TO_PAGES (MemoryMapSize) + 1;
> >> +      MemoryMap = AllocatePages (Pages);
> >> +
> >> +      //
> >> +      // Get System MemoryMap
> >> +      //
> >> +      Status = gBS->GetMemoryMap (
> >> +                      &MemoryMapSize,
> >> +                      MemoryMap,
> >> +                      &MapKey,
> >> +                      &DescriptorSize,
> >> +                      &DescriptorVersion
> >> +                      );
> >> +    }
> >> +
> >> +    // Don't do anything between the GetMemoryMap() and ExitBootServices()
> >> +    if (!EFI_ERROR(Status)) {
> >> +      Status = gBS->ExitBootServices (gImageHandle, MapKey);
> >> +      if (EFI_ERROR(Status)) {
> >> +        FreePages (MemoryMap, Pages);
> >> +        MemoryMap = NULL;
> >> +        MemoryMapSize = 0;
> >> +      }
> >> +    }
> >> +  } while (EFI_ERROR(Status));
> >> +
> >> +  return Status;
> >> +}
> >> +
> >>
> >>  STATIC
> >>  EFI_STATUS
> >> --
> >> 2.9.3
> >>
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