mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-24 12:09:58 +00:00
032c76bc6f
Add support for emulating Altera NiosII R1 architecture into qemu. This patch is based on previous work by Chris Wulff from 2012 and updated to latest mainline QEMU. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Chris Wulff <crwulff@gmail.com> Cc: Jeff Da Silva <jdasilva@altera.com> Cc: Ley Foon Tan <lftan@altera.com> Cc: Sandra Loosemore <sandra@codesourcery.com> Cc: Yves Vandervennet <yvanderv@altera.com> Cc: Alexander Graf <agraf@suse.de> Message-Id: <20170118220146.489-3-marex@denx.de> [rth: Remove tlb_flush from nios2_cpu_reset.] Signed-off-by: Richard Henderson <rth@twiddle.net>
51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
/*
|
|
* Altera Nios II MMU emulation for qemu.
|
|
*
|
|
* Copyright (C) 2012 Chris Wulff <crwulff@gmail.com>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, see
|
|
* <http://www.gnu.org/licenses/lgpl-2.1.html>
|
|
*/
|
|
#ifndef MMU_NIOS2_H
|
|
#define MMU_NIOS2_H
|
|
|
|
typedef struct Nios2TLBEntry {
|
|
target_ulong tag;
|
|
target_ulong data;
|
|
} Nios2TLBEntry;
|
|
|
|
typedef struct Nios2MMU {
|
|
int tlb_entry_mask;
|
|
uint32_t pteaddr_wr;
|
|
uint32_t tlbacc_wr;
|
|
uint32_t tlbmisc_wr;
|
|
Nios2TLBEntry *tlb;
|
|
} Nios2MMU;
|
|
|
|
typedef struct Nios2MMULookup {
|
|
target_ulong vaddr;
|
|
target_ulong paddr;
|
|
int prot;
|
|
} Nios2MMULookup;
|
|
|
|
void mmu_flip_um(CPUNios2State *env, unsigned int um);
|
|
unsigned int mmu_translate(CPUNios2State *env,
|
|
Nios2MMULookup *lu,
|
|
target_ulong vaddr, int rw, int mmu_idx);
|
|
void mmu_read_debug(CPUNios2State *env, uint32_t rn);
|
|
void mmu_write(CPUNios2State *env, uint32_t rn, uint32_t v);
|
|
void mmu_init(CPUNios2State *env);
|
|
|
|
#endif /* MMU_NIOS2_H */
|