The last patch consists purely of code movement; going forward, we should
use a few more symbolic constants.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
//\r
#define QEMU_FW_CFG_FNAME_SIZE 56\r
\r
+//\r
+// If the following bit is set in the UINT32 fw_cfg revision / feature bitmap\r
+// -- read from key 0x0001 with the basic IO Port or MMIO method --, then the\r
+// DMA interface is available.\r
+//\r
+#define FW_CFG_F_DMA BIT1\r
+\r
//\r
// Macros for the FW_CFG_DMA_ACCESS.Control bitmap (in native encoding).\r
//\r
#define FW_CFG_DMA_CTL_READ BIT1\r
#define FW_CFG_DMA_CTL_SKIP BIT2\r
#define FW_CFG_DMA_CTL_SELECT BIT3\r
+#define FW_CFG_DMA_CTL_WRITE BIT4\r
\r
typedef enum {\r
QemuFwCfgItemSignature = 0x0000,\r