diff options
| author | Atish Patra <atishp@rivosinc.com> | 2022-03-03 10:54:38 -0800 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2022-04-22 10:35:16 +1000 |
| commit | 3e6a417c8a077595ebcb4fb1d0944b291564cd43 (patch) | |
| tree | 567b368877681ae53ca7120bef828b91fcc87cb3 /target | |
| parent | a4b2fa433125af0305b0695d7f8dda61db3364b0 (diff) | |
| download | qemu-3e6a417c8a077595ebcb4fb1d0944b291564cd43.zip qemu-3e6a417c8a077595ebcb4fb1d0944b291564cd43.tar.gz qemu-3e6a417c8a077595ebcb4fb1d0944b291564cd43.tar.bz2 | |
target/riscv: Add support for mconfigptr
RISC-V privileged specification v1.12 introduced a mconfigptr
which will hold the physical address of a configuration data
structure. As Qemu doesn't have a configuration data structure,
is read as zero which is valid as per the priv spec.
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Atish Patra <atishp@rivosinc.com>
Message-Id: <20220303185440.512391-5-atishp@rivosinc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Diffstat (limited to 'target')
| -rw-r--r-- | target/riscv/cpu_bits.h | 1 | ||||
| -rw-r--r-- | target/riscv/csr.c | 2 |
2 files changed, 3 insertions, 0 deletions
diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h index 0fe01d7..48d92a8 100644 --- a/target/riscv/cpu_bits.h +++ b/target/riscv/cpu_bits.h @@ -148,6 +148,7 @@ #define CSR_MARCHID 0xf12 #define CSR_MIMPID 0xf13 #define CSR_MHARTID 0xf14 +#define CSR_MCONFIGPTR 0xf15 /* Machine Trap Setup */ #define CSR_MSTATUS 0x300 diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 1400027..6590cc8 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -3110,6 +3110,8 @@ riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = { [CSR_MIMPID] = { "mimpid", any, read_zero }, [CSR_MHARTID] = { "mhartid", any, read_mhartid }, + [CSR_MCONFIGPTR] = { "mconfigptr", any, read_zero, + .min_priv_ver = PRIV_VERSION_1_12_0 }, /* Machine Trap Setup */ [CSR_MSTATUS] = { "mstatus", any, read_mstatus, write_mstatus, NULL, read_mstatus_i128 }, |