qemu/include/hw/char/riscv_htif.h
Bin Meng 71d68c48be hw/riscv: spike: Decouple create_fdt() dependency to ELF loading
At present create_fdt() calls htif_uses_elf_symbols() to determine
whether to insert a <reg> property for the HTIF. This unfortunately
creates a hidden dependency to riscv_load_{firmware,kernel} that
create_fdt() must be called after the ELF {firmware,kernel} image
has been loaded.

Decouple such dependency be adding a new parameter to create_fdt(),
whether custom HTIF base address is used. The flag will be set if
non ELF {firmware,kernel} image is given by user.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-Id: <20221229091828.1945072-13-bmeng@tinylab.org>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2023-01-20 10:14:13 +10:00

52 lines
1.5 KiB
C

/*
* QEMU RISCV Host Target Interface (HTIF) Emulation
*
* Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu
* Copyright (c) 2017-2018 SiFive, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2 or later, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef HW_RISCV_HTIF_H
#define HW_RISCV_HTIF_H
#include "chardev/char.h"
#include "chardev/char-fe.h"
#include "exec/memory.h"
#define TYPE_HTIF_UART "riscv.htif.uart"
typedef struct HTIFState {
int allow_tohost;
int fromhost_inprogress;
uint64_t tohost;
uint64_t fromhost;
hwaddr tohost_offset;
hwaddr fromhost_offset;
MemoryRegion mmio;
CharBackend chr;
uint64_t pending_read;
} HTIFState;
/* HTIF symbol callback */
void htif_symbol_callback(const char *st_name, int st_info, uint64_t st_value,
uint64_t st_size);
/* legacy pre qom */
HTIFState *htif_mm_init(MemoryRegion *address_space, Chardev *chr,
uint64_t nonelf_base, bool custom_base);
#endif