diff options
Diffstat (limited to 'src/mainboard/emulation/qemu-i440fx/fw_cfg_if.h')
| -rw-r--r-- | src/mainboard/emulation/qemu-i440fx/fw_cfg_if.h | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/src/mainboard/emulation/qemu-i440fx/fw_cfg_if.h b/src/mainboard/emulation/qemu-i440fx/fw_cfg_if.h index de67f021ea..dad6ca9e7f 100644 --- a/src/mainboard/emulation/qemu-i440fx/fw_cfg_if.h +++ b/src/mainboard/emulation/qemu-i440fx/fw_cfg_if.h @@ -67,11 +67,20 @@ enum fw_cfg_enum { #define FW_CFG_INVALID 0xffff +/* width in bytes of fw_cfg control register */ +#define FW_CFG_CTL_SIZE 0x02 + +/* fw_cfg "file name" is up to 56 characters (including terminating nul) */ +#define FW_CFG_MAX_FILE_PATH 56 + +/* size in bytes of fw_cfg signature */ +#define FW_CFG_SIG_SIZE 4 + typedef struct FWCfgFile { uint32_t size; /* file size */ uint16_t select; /* write this to 0x510 to read it */ uint16_t reserved; - char name[56]; + char name[FW_CFG_MAX_FILE_PATH]; } FWCfgFile; typedef struct FWCfgFiles { @@ -96,4 +105,26 @@ typedef struct FwCfgSmbios { uint16_t fieldoffset; } FwCfgSmbios; +/* FW_CFG_ID bits */ +#define FW_CFG_VERSION 0x01 +#define FW_CFG_VERSION_DMA 0x02 + +/* FW_CFG_DMA_CONTROL bits */ +#define FW_CFG_DMA_CTL_ERROR 0x01 +#define FW_CFG_DMA_CTL_READ 0x02 +#define FW_CFG_DMA_CTL_SKIP 0x04 +#define FW_CFG_DMA_CTL_SELECT 0x08 +#define FW_CFG_DMA_CTL_WRITE 0x10 + +#define FW_CFG_DMA_SIGNATURE 0x51454d5520434647ULL /* "QEMU CFG" */ + +/* Control as first field allows for different structures selected by this + * field, which might be useful in the future + */ +typedef struct FwCfgDmaAccess { + uint32_t control; + uint32_t length; + uint64_t address; +} FwCfgDmaAccess; + #endif /* FW_CFG_IF_H */ |