From: Alistair Francis <alistair.francis@opensource.wdc.com>
To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org
Cc: Alistair Francis <alistair.francis@wdc.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Bin Meng <bin.meng@windriver.com>,
alistair23@gmail.com, bmeng.cn@gmail.com
Subject: [PATCH 1/2] target/riscv: Fixup MSECCFG minimum priv check
Date: Thu, 30 Jun 2022 09:31:01 +1000 [thread overview]
Message-ID: <20220629233102.275181-2-alistair.francis@opensource.wdc.com> (raw)
In-Reply-To: <20220629233102.275181-1-alistair.francis@opensource.wdc.com>
From: Alistair Francis <alistair.francis@wdc.com>
There is nothing in the RISC-V spec that mandates version 1.12 is
required for ePMP and there is currently hardware [1] that implements
ePMP (a draft version though) with the 1.11 priv spec.
1: https://ibex-core.readthedocs.io/en/latest/01_overview/compliance.html
Fixes: a4b2fa433125af0305b0695d7f8dda61db3364b0 target/riscv: Introduce privilege version field in the CSR ops.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
target/riscv/csr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/target/riscv/csr.c b/target/riscv/csr.c
index 6dbe9b541f..6379bef5a5 100644
--- a/target/riscv/csr.c
+++ b/target/riscv/csr.c
@@ -3561,7 +3561,7 @@ riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = {
/* Physical Memory Protection */
[CSR_MSECCFG] = { "mseccfg", epmp, read_mseccfg, write_mseccfg,
- .min_priv_ver = PRIV_VERSION_1_12_0 },
+ .min_priv_ver = PRIV_VERSION_1_11_0 },
[CSR_PMPCFG0] = { "pmpcfg0", pmp, read_pmpcfg, write_pmpcfg },
[CSR_PMPCFG1] = { "pmpcfg1", pmp, read_pmpcfg, write_pmpcfg },
[CSR_PMPCFG2] = { "pmpcfg2", pmp, read_pmpcfg, write_pmpcfg },
--
2.36.1
next prev parent reply other threads:[~2022-06-29 23:32 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-29 23:31 [PATCH 0/2] target/riscv: Fixes for Ibex and OpenTitan Alistair Francis
2022-06-29 23:31 ` Alistair Francis [this message]
2022-07-01 12:32 ` [PATCH 1/2] target/riscv: Fixup MSECCFG minimum priv check Bin Meng
2022-07-02 6:53 ` Alistair Francis
2022-06-29 23:31 ` [PATCH 2/2] target/riscv: Ibex: Support priv version 1.11 Alistair Francis
2022-07-01 12:32 ` Bin Meng
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