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| author | Alistair Francis <alistair.francis@wdc.com> | 2020-11-03 20:43:23 -0800 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2020-11-09 15:08:45 -0800 |
| commit | c445593d30037d0c82241e8ec23eb845bca476e9 (patch) | |
| tree | 82d58f9d6b1887110ffffd9ae7805c2607d4ebcc /target | |
| parent | 3c8c36c9087da957f580a9bb5ebf7814a753d1c6 (diff) | |
| download | qemu-c445593d30037d0c82241e8ec23eb845bca476e9.zip qemu-c445593d30037d0c82241e8ec23eb845bca476e9.tar.gz qemu-c445593d30037d0c82241e8ec23eb845bca476e9.tar.bz2 | |
target/riscv: Add a virtualised MMU Mode
Add a new MMU mode that includes the current virt mode.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 4b301bc0ea36da962fc1605371b65019ac3073df.1604464950.git.alistair.francis@wdc.com
Diffstat (limited to 'target')
| -rw-r--r-- | target/riscv/cpu-param.h | 11 | ||||
| -rw-r--r-- | target/riscv/cpu.h | 4 | ||||
| -rw-r--r-- | target/riscv/cpu_helper.c | 2 |
3 files changed, 14 insertions, 3 deletions
diff --git a/target/riscv/cpu-param.h b/target/riscv/cpu-param.h index 664fc1d..80eb615 100644 --- a/target/riscv/cpu-param.h +++ b/target/riscv/cpu-param.h @@ -18,6 +18,15 @@ # define TARGET_VIRT_ADDR_SPACE_BITS 32 /* sv32 */ #endif #define TARGET_PAGE_BITS 12 /* 4 KiB Pages */ -#define NB_MMU_MODES 4 +/* + * The current MMU Modes are: + * - U mode 0b000 + * - S mode 0b001 + * - M mode 0b011 + * - U mode HLV/HLVX/HSV 0b100 + * - S mode HLV/HLVX/HSV 0b101 + * - M mode HLV/HLVX/HSV 0b111 + */ +#define NB_MMU_MODES 8 #endif diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 87b68af..5d8e54c 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -363,7 +363,9 @@ void QEMU_NORETURN riscv_raise_exception(CPURISCVState *env, target_ulong riscv_cpu_get_fflags(CPURISCVState *env); void riscv_cpu_set_fflags(CPURISCVState *env, target_ulong); -#define TB_FLAGS_MMU_MASK 3 +#define TB_FLAGS_MMU_MASK 7 +#define TB_FLAGS_PRIV_MMU_MASK 3 +#define TB_FLAGS_PRIV_HYP_ACCESS_MASK (1 << 2) #define TB_FLAGS_MSTATUS_FS MSTATUS_FS typedef CPURISCVState CPUArchState; diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c index 3eb3a03..9dfa7af 100644 --- a/target/riscv/cpu_helper.c +++ b/target/riscv/cpu_helper.c @@ -323,7 +323,7 @@ static int get_physical_address(CPURISCVState *env, hwaddr *physical, * (riscv_cpu_do_interrupt) is correct */ MemTxResult res; MemTxAttrs attrs = MEMTXATTRS_UNSPECIFIED; - int mode = mmu_idx; + int mode = mmu_idx & TB_FLAGS_PRIV_MMU_MASK; bool use_background = false; /* |