tillitis-key/hw/application_fpga/fw/mta1_mkdf/proto.h
Daniel Lublin 99efb78ed8
Receive USS and hash into CDI
- We're OK with USS not being loaded, and use an all-zero USS if so.
- We require USS to be loaded before app_size (if at all).
2022-09-29 14:58:23 +02:00

66 lines
1.2 KiB
C

/*
* Copyright (C) 2022 - Tillitis AB
* SPDX-License-Identifier: GPL-2.0-only
*/
#include "types.h"
#ifndef PROTO_H
#define PROTO_H
enum endpoints {
DST_HW_IFPGA,
DST_HW_AFPGA,
DST_FW,
DST_SW
};
enum cmdlen {
LEN_1,
LEN_4,
LEN_32,
LEN_128
};
#define CMDLEN_MAXBYTES 128
// clang-format off
enum fwcmd {
FW_CMD_NAME_VERSION = 0x01,
FW_RSP_NAME_VERSION = 0x02,
FW_CMD_LOAD_APP_SIZE = 0x03,
FW_RSP_LOAD_APP_SIZE = 0x04,
FW_CMD_LOAD_APP_DATA = 0x05,
FW_RSP_LOAD_APP_DATA = 0x06,
FW_CMD_RUN_APP = 0x07,
FW_RSP_RUN_APP = 0x08,
FW_CMD_GET_APP_DIGEST = 0x09,
FW_CMD_LOAD_USS = 0x0a,
FW_RSP_LOAD_USS = 0x0b,
/* ... */
FW_RSP_GET_APP_DIGEST = 0x10, // encoded as 0x10 for backwards compatibility
};
// clang-format on
enum status {
STATUS_OK,
STATUS_BAD
};
struct frame_header {
uint8_t id;
enum endpoints endpoint;
enum cmdlen len;
};
uint8_t genhdr(uint8_t id, uint8_t endpoint, uint8_t status, enum cmdlen len);
int parseframe(uint8_t b, struct frame_header *hdr);
void fwreply(struct frame_header hdr, enum fwcmd rspcode, uint8_t *buf);
void writebyte(uint8_t b);
void write(uint8_t *buf, size_t nbytes);
uint8_t readbyte();
uint8_t readbyte_ledflash(int ledvalue, int loopcount);
void read(uint8_t *buf, size_t nbytes);
#endif