ShellPkg/UefiShellDebug1CommandsLib: remove I/O address limit from 'mm'

Neither the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL nor the EFI_CPU_IO2_PROTOCOL
impose any restrictions when it comes to the range of valid I/O
addresses. Even so, the 'mm' command in -IO mode refuses to perform
accesses to addresses >= 0xffff.

It is not up to 'mm' to impose this restriction, so remove it.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>

1 files changed, 0 insertions, 11 deletions

diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/Mm.c b/ShellPkg/Library/UefiShellDebug1CommandsLib/Mm.c
index 9f97f1d..d1fd42b 100644
--- a/ShellPkg/Library/UefiShellDebug1CommandsLib/Mm.c
+++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/Mm.c
@@ -525,12 +525,6 @@ ShellCommandRunMm (
       goto Done;

     }

 

-    if ((AccessType == ShellMmIo) && (Address + Size > MAX_UINT16 + 1)) {

-      ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_MM_IO_ADDRESS_RANGE), gShellDebug1HiiHandle, L"mm");

-      ShellStatus = SHELL_INVALID_PARAMETER;

-      goto Done;

-    }

-

     //

     // locate IO protocol interface

     //

@@ -592,11 +586,6 @@ ShellCommandRunMm (
     //

     Complete = FALSE;

     do {

-      if ((AccessType == ShellMmIo) && (Address + Size > MAX_UINT16 + 1)) {

-        ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_MM_ADDRESS_RANGE2), gShellDebug1HiiHandle, L"mm");

-        break;

-      }

-

       ShellMmAccess (AccessType, PciRootBridgeIo, CpuIo, TRUE, Address, Size, &Buffer);

       ShellPrintHiiEx (-1, -1, NULL, mShellMmAccessTypeStr[AccessType], gShellDebug1HiiHandle);

       ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_MM_ADDRESS), gShellDebug1HiiHandle, Address);