litex/misoc/software/bios/sfl.h

32 lines
662 B
C

#ifndef __SFL_H
#define __SFL_H
#define SFL_MAGIC_LEN 14
#define SFL_MAGIC_REQ "sL5DdSMmkekro\n"
#define SFL_MAGIC_ACK "z6IHG7cYDID6o\n"
struct sfl_frame {
unsigned char length;
unsigned char crc[2];
unsigned char cmd;
unsigned char payload[255];
} __attribute__((packed));
/* General commands */
#define SFL_CMD_ABORT 0x00
#define SFL_CMD_LOAD 0x01
#define SFL_CMD_JUMP 0x02
/* Linux-specific commands */
#define SFL_CMD_CMDLINE 0x03
#define SFL_CMD_INITRDSTART 0x04
#define SFL_CMD_INITRDEND 0x05
/* Replies */
#define SFL_ACK_SUCCESS 'K'
#define SFL_ACK_CRCERROR 'C'
#define SFL_ACK_UNKNOWN 'U'
#define SFL_ACK_ERROR 'E'
#endif /* __SFL_H */