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OvmfPkg/QemuFwCfgLib: extend lib class header with more definitions 

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>
This commit is contained in:
Laszlo Ersek 2016-12-02 19:37:26 +01:00
parent de01f72cc7
commit be0eaf42ef
1 changed files with 8 additions and 0 deletions
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8
OvmfPkg/Include/Library/QemuFwCfgLib.h
View File

@ -23,6 +23,13 @@
//
#define QEMU_FW_CFG_FNAME_SIZE 56
//
// If the following bit is set in the UINT32 fw_cfg revision / feature bitmap
// -- read from key 0x0001 with the basic IO Port or MMIO method --, then the
// DMA interface is available.
//
#define FW_CFG_F_DMA BIT1
//
// Macros for the FW_CFG_DMA_ACCESS.Control bitmap (in native encoding).
//
@ -30,6 +37,7 @@
#define FW_CFG_DMA_CTL_READ BIT1
#define FW_CFG_DMA_CTL_SKIP BIT2
#define FW_CFG_DMA_CTL_SELECT BIT3
#define FW_CFG_DMA_CTL_WRITE BIT4
typedef enum {
QemuFwCfgItemSignature = 0x0000,