diff options
Diffstat (limited to 'OvmfPkg')
| -rw-r--r-- | OvmfPkg/Include/Library/QemuFwCfgLib.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/OvmfPkg/Include/Library/QemuFwCfgLib.h b/OvmfPkg/Include/Library/QemuFwCfgLib.h index 7c29422fbd..40a07456c5 100644 --- a/OvmfPkg/Include/Library/QemuFwCfgLib.h +++ b/OvmfPkg/Include/Library/QemuFwCfgLib.h @@ -23,6 +23,14 @@ //
#define QEMU_FW_CFG_FNAME_SIZE 56
+//
+// Macros for the FW_CFG_DMA_ACCESS.Control bitmap (in native encoding).
+//
+#define FW_CFG_DMA_CTL_ERROR BIT0
+#define FW_CFG_DMA_CTL_READ BIT1
+#define FW_CFG_DMA_CTL_SKIP BIT2
+#define FW_CFG_DMA_CTL_SELECT BIT3
+
typedef enum {
QemuFwCfgItemSignature = 0x0000,
QemuFwCfgItemInterfaceVersion = 0x0001,
@@ -59,6 +67,17 @@ typedef enum { } FIRMWARE_CONFIG_ITEM;
+//
+// Communication structure for the DMA access method. All fields are encoded in
+// big endian.
+//
+#pragma pack (1)
+typedef struct {
+ UINT32 Control;
+ UINT32 Length;
+ UINT64 Address;
+} FW_CFG_DMA_ACCESS;
+#pragma pack ()
/**
Returns a boolean indicating if the firmware configuration interface
|