diff options
Diffstat (limited to 'chip/g/upgrade_fw.h')
| -rw-r--r-- | chip/g/upgrade_fw.h | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/chip/g/upgrade_fw.h b/chip/g/upgrade_fw.h index f7fcf0de8a..8eee3dbdb3 100644 --- a/chip/g/upgrade_fw.h +++ b/chip/g/upgrade_fw.h @@ -20,15 +20,16 @@ struct upgrade_command { } __packed; /* - * This is the format of the header the host uses when sending update PDUs - * over USB. The PDUs are 1K bytes in size, they are fragmented into USB units - * of 64 bytes each and reassembled on the receive side before being passed to + * This is the frame format the host uses when sending update PDUs over USB. + * + * The PDUs are up to 1K bytes in size, they are fragmented into USB chunks of + * 64 bytes each and reassembled on the receive side before being passed to * the flash update function. * - * The flash update function receives the PDU body starting at the cmd field - * below, and puts its reply into the beginning of the same buffer. + * The flash update function receives the unframed PDU body (starting at the + * cmd field below), and puts its reply into the same buffer the PDU was in. */ -struct update_pdu_header { +struct update_frame_header { uint32_t block_size; /* Total size of the block, including this * field. */ @@ -58,6 +59,12 @@ struct update_pdu_header { struct first_response_pdu { uint32_t return_value; uint32_t protocol_version; + union { + struct { + uint32_t backup_ro_offset; + uint32_t backup_rw_offset; + } vers3; + }; }; /* TODO: Handle this in upgrade_fw.c, not usb_upgrade.c */ |