04h This mode is used to transfer new firmware to the drive. The drive receives Allocation Length bytes of data from the host. The data is stored in the drive’s buffer.The location in the buffer at which the data is written is determined by the firmware.
The firmware image is divided into a number of blocks of data which are sent to the drive using multiple Write Buffer commands.
All the firmware image data should be transferred using this mode. The Buffer ID and Buffer Offset are ignored.
05h This mode is used to indicate that the complete firmware image has been sent to the drive. This is the signal for entering the FLASH reprogramming stage of the firmware upgrade process.
Once this command has been received, and the associated data stored in the buffer, the resident firmware checks the validity of the image that has been received. If this seems to be correct, the Firmware Upgrade operation will commence. If any faults are detected in the format of the image, the drive will report CHECK CONDITION to the host. The sense key is ABORTED COMMAND, and the additional sense is set to 2600h (invalid field in parameter list).
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| CAUTION: Once this command has been sent and completed, the |
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| drive’s power supply must not be interrupted until the drive has |
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| completed the firmware upgrade. |
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| The Buffer ID and Buffer Offset are ignored. |
| 0Ah/ | This mode is used to write to the Echo Buffer. |
| 1Ah | The Buffer ID and Offset are ignored. |
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Buffer ID | Specifies which buffer to read. | |
| 00h | Main buffer (RAM) Offset Boundary: 1 byte |
| 01h | Processor addressable memory (RAM) Offset Boundary: 1 byte |
| 02h | SCSI burst buffer (RAM) Offset Boundary: 4 bytes |
| 13h | or FC burst buffer (RAM) Offset boundary: 512 bytes |
| PCA EEPROM Offset Boundary: 1 byte | |
| 20h | Main buffer segment 0 (RAM) — see below for description) |
| 21h | Main buffer segment 1 (RAM) — see below for description) |
| 22h | Main buffer segment 2 (RAM) — see below for description) |
| 23h | Main buffer segment 3 (RAM) — see below for description) |
| 24h | Main buffer segment 4 (RAM) — see below for description) |
| 25h | Main buffer segment 5 (RAM) — see below for description) |
| 26h | Main buffer segment 6 (RAM) — see below for description) |
| 27h | Main buffer segment 7 (RAM) — see below for description) |
Buffer Offset | Where in the buffer the data should be written. This must be smaller than the size of the |
| buffer and must obey the specified offset boundary. When downloading new firmware, |
| this field is ignored. |
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Parameter List | The amount of data. This must be smaller than the difference between the Buffer Offset |
Length | field and the size of the buffer. |
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184 Commands