8d8897accb
Currently, we have to use OpenSBI firmware ELF as bios for the spike machine because the HTIF console requires ELF for parsing "fromhost" and "tohost" symbols. The latest OpenSBI can now optionally pick-up HTIF register address from HTIF DT node so using this feature spike machine can now use OpenSBI firmware BIN as bios. Signed-off-by: Anup Patel <apatel@ventanamicro.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
/*
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* QEMU RISCV Host Target Interface (HTIF) Emulation
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*
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* Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu
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* Copyright (c) 2017-2018 SiFive, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2 or later, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef HW_RISCV_HTIF_H
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#define HW_RISCV_HTIF_H
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#include "chardev/char.h"
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#include "chardev/char-fe.h"
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#include "exec/memory.h"
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#include "target/riscv/cpu.h"
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#define TYPE_HTIF_UART "riscv.htif.uart"
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typedef struct HTIFState {
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int allow_tohost;
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int fromhost_inprogress;
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hwaddr tohost_offset;
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hwaddr fromhost_offset;
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uint64_t tohost_size;
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uint64_t fromhost_size;
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MemoryRegion mmio;
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MemoryRegion *address_space;
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MemoryRegion *main_mem;
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void *main_mem_ram_ptr;
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CPURISCVState *env;
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CharBackend chr;
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uint64_t pending_read;
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} HTIFState;
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extern const VMStateDescription vmstate_htif;
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extern const MemoryRegionOps htif_io_ops;
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/* HTIF symbol callback */
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void htif_symbol_callback(const char *st_name, int st_info, uint64_t st_value,
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uint64_t st_size);
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/* Check if HTIF uses ELF symbols */
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bool htif_uses_elf_symbols(void);
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/* legacy pre qom */
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HTIFState *htif_mm_init(MemoryRegion *address_space, MemoryRegion *main_mem,
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CPURISCVState *env, Chardev *chr, uint64_t nonelf_base);
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#endif
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