diff options
Diffstat (limited to 'drivers/staging/greybus/greybus_protocols.h')
| -rw-r--r-- | drivers/staging/greybus/greybus_protocols.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/drivers/staging/greybus/greybus_protocols.h b/drivers/staging/greybus/greybus_protocols.h index b95d24b..357ecd3 100644 --- a/drivers/staging/greybus/greybus_protocols.h +++ b/drivers/staging/greybus/greybus_protocols.h @@ -146,6 +146,60 @@ struct gb_control_disconnected_request { }; /* Control protocol [dis]connected response has no payload */ + +/* Firmware Protocol */ + +/* Version of the Greybus firmware protocol we support */ +#define GB_FIRMWARE_VERSION_MAJOR 0x00 +#define GB_FIRMWARE_VERSION_MINOR 0x01 + +/* Greybus firmware request types */ +#define GB_FIRMWARE_TYPE_INVALID 0x00 +#define GB_FIRMWARE_TYPE_PROTOCOL_VERSION 0x01 +#define GB_FIRMWARE_TYPE_FIRMWARE_SIZE 0x02 +#define GB_FIRMWARE_TYPE_GET_FIRMWARE 0x03 +#define GB_FIRMWARE_TYPE_READY_TO_BOOT 0x04 + +/* Greybus firmware boot stages */ +#define GB_FIRMWARE_BOOT_STAGE_ONE 0x01 /* Reserved for the boot ROM */ +#define GB_FIRMWARE_BOOT_STAGE_TWO 0x02 /* Firmware package to be loaded by the boot ROM */ +#define GB_FIRMWARE_BOOT_STAGE_THREE 0x03 /* Module personality package loaded by Stage 2 firmware */ + +/* Greybus firmware ready to boot status */ +#define GB_FIRMWARE_BOOT_STATUS_INVALID 0x00 /* Firmware blob could not be validated */ +#define GB_FIRMWARE_BOOT_STATUS_INSECURE 0x01 /* Firmware blob is valid but insecure */ +#define GB_FIRMWARE_BOOT_STATUS_SECURE 0x02 /* Firmware blob is valid and secure */ + +/* Max firmware data fetch size in bytes */ +#define GB_FIRMWARE_FETCH_MAX 2000 + +/* Firmware protocol firmware size request/response */ +struct gb_firmware_size_request { + __u8 stage; +}; + +struct gb_firmware_size_response { + __le32 size; +}; + +/* Firmware protocol get firmware request/response */ +struct gb_firmware_get_firmware_request { + __le32 offset; + __le32 size; +}; + +struct gb_firmware_get_firmware_response { + __u8 data[0]; +}; + +/* Firmware protocol Ready to boot request */ +struct gb_firmware_ready_to_boot_request { + __u8 stage; + __u8 status; +}; +/* Firmware protocol Ready to boot response has no payload */ + + /* I2C */ /* Version of the Greybus i2c protocol we support */ |
