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OvmfPkg/QemuFwCfg: introduce FW_CFG_IO_SELECTOR, adapt the package 

Introduce the FW_CFG_IO_SELECTOR macro for IO Port 0x510 (the Selector
Register), and update all references in OvmfPkg.

Cc: Jordan Justen <jordan.l.justen@intel.com>
Suggested-by: Jordan Justen <jordan.l.justen@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
This commit is contained in:
Laszlo Ersek 2017-02-21 14:43:00 +01:00
parent 5583a8a4ff
commit 21ca2f28e6
3 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
OvmfPkg/Include/IndustryStandard/QemuFwCfg.h
View File

@ -42,6 +42,12 @@
#define FW_CFG_DMA_CTL_SELECT BIT3
#define FW_CFG_DMA_CTL_WRITE BIT4
//
// The fw_cfg registers can be found at these IO Ports, on the IO-mapped
// platforms (Ia32 and X64).
//
#define FW_CFG_IO_SELECTOR 0x510
//
// Numerically defined keys.
//

2
OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c
View File

@ -42,7 +42,7 @@ QemuFwCfgSelectItem (
)
{
DEBUG ((EFI_D_INFO, "Select Item: 0x%x\n", (UINT16)(UINTN) QemuFwCfgItem));
IoWrite16 (0x510, (UINT16)(UINTN) QemuFwCfgItem);
IoWrite16 (FW_CFG_IO_SELECTOR, (UINT16)(UINTN) QemuFwCfgItem);
}

2
OvmfPkg/SmmControl2Dxe/SmiFeatures.c
View File

@ -281,7 +281,7 @@ SaveSmiFeatures (
S3SaveState, // This
EFI_BOOT_SCRIPT_IO_WRITE_OPCODE, // OpCode
EfiBootScriptWidthUint16, // Width
(UINT64)0x510, // Address
(UINT64)FW_CFG_IO_SELECTOR, // Address
(UINTN)1, // Count
&FeaturesOkItemAsUint16 // Buffer
);