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[183.178.47.145]) by smtp.gmail.com with ESMTPSA id i11sm13312700pjv.30.2020.08.08.02.10.55 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 08 Aug 2020 02:10:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ZQ4wkJR7VVNblB+G2e/NZ21j2c8KfW3THWxKkfwdtAw=; b=PC9BPd3PwbPGf+qQvhYp2FBMAhVrZzjIIUTg5bMgguc2/uhGAgAv6VCgBGxiN/4tOq klGeJ/3ORPGbXWAmIQedOU6dssoTLg1QBRYdgQAIeZqNaW/ldbOSwOxQKnbcmGV+lryM xZ/ovI4vwff1qVIxh2BsUk7xZr3U2oxlgG0mUL40I/9Ro7ijyCqFLxxeORj/XnbCD+Jl z/Oem4f7ZKmWIGR/OQcw0TugSRdo65ImAHviAcyWMbu2orp/fdCRbQSfluKGYo77T9fJ L2QJwMDBozUZXw5c+08nIIQne7wXgDOM2SFJb/5RsgedQQxcj/zN6q3ezB7y9KxOXsRq sxOw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ZQ4wkJR7VVNblB+G2e/NZ21j2c8KfW3THWxKkfwdtAw=; b=WbiIsFfh2OwkSu5QGIQOb7XGfUdQAyt9mlwjKCSgjRhm/rl25Yh4bKnkvXO1N0AxBs uAtddNjU+cs8qNmUKeo1IO3aWGCMs1mGFGHFiZM7RkBH0jmbgWUjRsNfg9XXTNh178GU G2qvqIhLdn4p+/ev/X6fsXdtp7nipgmgxoPqltLQaMKU7YtvuGicRobU4W3wQ0dRIh81 FO65rOBXrA/nl7B5rJy3I6Yu3hD0R/GGyFT9ONkAMOc0iffNCpN4J1xngbIpHb2bp+9n ZzNcg8sfeLaCF83MHcGNdcMbiQ0MdJA/fFZ3S+SUj6S2oKPVHn6RgseA2EQML5Vfx5+P s0Mg== X-Gm-Message-State: AOAM530cucPbfSH6PPmB0VBbNXpUZYUr7y3UaYwffHUTTElUk/0rcajX seKOM1tiZNbPTK3W9fI6j91RMO4UIXtYYA== X-Google-Smtp-Source: ABdhPJzKHW2N9VyR2MzCX7L5LU5MliDKksICKxhZsiUiSUNdYvE0gZllyfxXWLq9jQpMdVGoDKogVw== X-Received: by 2002:a17:90b:124e:: with SMTP id gx14mr18033376pjb.225.1596877858527; Sat, 08 Aug 2020 02:10:58 -0700 (PDT) From: Hongzheng-Li X-Google-Original-From: Hongzheng-Li To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Subject: [PATCH 4/4] Add a config option for ePMP. Date: Sat, 8 Aug 2020 17:09:50 +0800 Message-Id: <20200808090950.13-5-Ethan.Lee.QNL@gmail.com> X-Mailer: git-send-email 2.24.1.windows.2 In-Reply-To: <20200808090950.13-1-Ethan.Lee.QNL@gmail.com> References: <20200808090950.13-1-Ethan.Lee.QNL@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::1041; envelope-from=ethan.lee.qnl@gmail.com; helo=mail-pj1-x1041.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Sat, 08 Aug 2020 08:59:47 -0400 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Hou Weiying , sagark@eecs.berkeley.edu, kbastian@mail.uni-paderborn.de, Hongzheng-Li , Alistair.Francis@wdc.com, palmer@dabbelt.com, Myriad-Dreamin Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" From: Hou Weiying Add a config option to enable experimental support for ePMP. This is disabled by default and can be enabled with 'x-epmp=3Dtrue'. Signed-off-by: Hongzheng-Li Signed-off-by: Hou Weiying Signed-off-by: Myriad-Dreamin --- target/riscv/cpu.c | 9 +++++++++ target/riscv/cpu.h | 3 +++ 2 files changed, 12 insertions(+) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 059d71f2c7..79fa9d3c2f 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -407,6 +407,14 @@ static void riscv_cpu_realize(DeviceState *dev, Error = **errp) =20 if (cpu->cfg.pmp) { set_feature(env, RISCV_FEATURE_PMP); + + /* + * Enhanced PMP should only be available + * on harts with PMP support + */ + if (cpu->cfg.epmp) { + set_feature(env, RISCV_FEATURE_EPMP); + } } =20 /* If misa isn't set (rv32 and rv64 machines) set it here */ @@ -509,6 +517,7 @@ static Property riscv_cpu_properties[] =3D { DEFINE_PROP_STRING("priv_spec", RISCVCPU, cfg.priv_spec), DEFINE_PROP_BOOL("mmu", RISCVCPU, cfg.mmu, true), DEFINE_PROP_BOOL("pmp", RISCVCPU, cfg.pmp, true), + DEFINE_PROP_BOOL("x-epmp", RISCVCPU, cfg.epmp, false), DEFINE_PROP_END_OF_LIST(), }; =20 diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index d0e7f5b9c5..afdc9fa2bf 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -77,6 +77,7 @@ enum { RISCV_FEATURE_MMU, RISCV_FEATURE_PMP, + RISCV_FEATURE_EPMP, RISCV_FEATURE_MISA }; =20 @@ -202,6 +203,7 @@ struct CPURISCVState { =20 /* physical memory protection */ pmp_table_t pmp_state; + target_ulong mseccfg; =20 /* machine specific rdtime callback */ uint64_t (*rdtime_fn)(void); @@ -272,6 +274,7 @@ typedef struct RISCVCPU { char *user_spec; bool mmu; bool pmp; + bool epmp; } cfg; } RISCVCPU; =20 --=20 2.20.1