OptionRomPkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / OvmfPkg / Include / IndustryStandard / QemuFwCfg.h

diff --git a/OvmfPkg/Include/IndustryStandard/QemuFwCfg.h b/OvmfPkg/Include/IndustryStandard/QemuFwCfg.h
index c7e9b5c382a58e011240978b48ea5ccad436f715..8c32f83e8e16617ef3a5862fe4619f1ff8132cae 100644 (file)
--- a/OvmfPkg/Include/IndustryStandard/QemuFwCfg.h
+++ b/OvmfPkg/Include/IndustryStandard/QemuFwCfg.h
@@ -42,6 +42,14 @@
 #define FW_CFG_DMA_CTL_SELECT BIT3\r
 #define FW_CFG_DMA_CTL_WRITE  BIT4\r
 \r
+//\r
+// The fw_cfg registers can be found at these IO Ports, on the IO-mapped\r
+// platforms (Ia32 and X64).\r
+//\r
+#define FW_CFG_IO_SELECTOR    0x510\r
+#define FW_CFG_IO_DATA        0x511\r
+#define FW_CFG_IO_DMA_ADDRESS 0x514\r
+\r
 //\r
 // Numerically defined keys.\r
 //\r