9.3. Gecko BMC register block

The Gecko BMC register block has a header with type 0x0000C141, version 0x00000100, and contains control registers for the Silicom Gecko BMC.

Address	Field	31..24	23..16	15..8	7..0	Reset value
RBB+0x00	Type	Vendor ID		Type		RO 0x0000C141
RBB+0x04	Version	Major	Minor	Patch	Meta	RO 0x00000100
RBB+0x08	Next pointer	Pointer to next register block				RO -
RBB+0x0C	Status	Status		Read data		RO 0x00000000
RBB+0x10	Data	Write data				RW 0x00000000
RBB+0x14	Command	Command				RW 0x00000000

See Register blocks for definitions of the standard register block header fields.

Status

The status field provides status information and the read data from the BMC.

Address	31..24	23..16	15..8	7..0	Reset value
RBB+0x0C	Status		Read data		RO 0x00000000

Bit	Function
16	Done
18	Timeout
19	Idle

Data

The data field provides the write data to the BMC.

Address	31..24	23..16	15..8	7..0	Reset value
RBB+0x10	Write data				RW 0x00000000

Command

The command field provides the command to the BMC. Writing to the command field triggers an SPI transfer to the BMC.

Address	31..24	23..16	15..8	7..0	Reset value
RBB+0x14	Command				RW 0x00000000