2 * QEMU RISCV Host Target Interface (HTIF) Emulation
4 * Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu
5 * Copyright (c) 2017-2018 SiFive, Inc.
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms and conditions of the GNU General Public License,
9 * version 2 or later, as published by the Free Software Foundation.
11 * This program is distributed in the hope it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * You should have received a copy of the GNU General Public License along with
17 * this program. If not, see <http://www.gnu.org/licenses/>.
20 #ifndef HW_RISCV_HTIF_H
21 #define HW_RISCV_HTIF_H
23 #include "chardev/char.h"
24 #include "chardev/char-fe.h"
25 #include "exec/memory.h"
27 #define TYPE_HTIF_UART "riscv.htif.uart"
29 typedef struct HTIFState
{
31 int fromhost_inprogress
;
36 hwaddr fromhost_offset
;
40 uint64_t pending_read
;
43 extern const char *sig_file
;
44 extern uint8_t line_size
;
46 /* HTIF symbol callback */
47 void htif_symbol_callback(const char *st_name
, int st_info
, uint64_t st_value
,
51 HTIFState
*htif_mm_init(MemoryRegion
*address_space
, Chardev
*chr
,
52 uint64_t nonelf_base
, bool custom_base
);