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[44.242.66.180]) by smtp.gmail.com with ESMTPSA id cq6sm5074158edb.1.2021.07.06.03.25.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 06 Jul 2021 03:25:43 -0700 (PDT) From: Bin Meng To: Alistair Francis , qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [PATCH] hw/riscv: sifive_u: Correct the CLINT timebase frequency Date: Tue, 6 Jul 2021 18:26:16 +0800 Message-Id: <20210706102616.1922469-1-bmeng.cn@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::62d; envelope-from=bmeng.cn@gmail.com; helo=mail-ej1-x62d.google.com 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-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: Bin Meng Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Bin Meng At present the CLINT timebase frequency is set to 10MHz on sifive_u, but on the real hardware the timebase frequency is 1Mhz. Signed-off-by: Bin Meng --- hw/riscv/sifive_u.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c index 273c86418c..e75ca38783 100644 --- a/hw/riscv/sifive_u.c +++ b/hw/riscv/sifive_u.c @@ -62,6 +62,9 @@ #include +/* CLINT timebase frequency */ +#define CLINT_TIMEBASE_FREQ 1000000 + static const MemMapEntry sifive_u_memmap[] = { [SIFIVE_U_DEV_DEBUG] = { 0x0, 0x100 }, [SIFIVE_U_DEV_MROM] = { 0x1000, 0xf000 }, @@ -165,7 +168,7 @@ static void create_fdt(SiFiveUState *s, const MemMapEntry *memmap, qemu_fdt_add_subnode(fdt, "/cpus"); qemu_fdt_setprop_cell(fdt, "/cpus", "timebase-frequency", - SIFIVE_CLINT_TIMEBASE_FREQ); + CLINT_TIMEBASE_FREQ); qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0x0); qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 0x1); @@ -847,7 +850,7 @@ static void sifive_u_soc_realize(DeviceState *dev, Error **errp) sifive_clint_create(memmap[SIFIVE_U_DEV_CLINT].base, memmap[SIFIVE_U_DEV_CLINT].size, 0, ms->smp.cpus, SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE, - SIFIVE_CLINT_TIMEBASE_FREQ, false); + CLINT_TIMEBASE_FREQ, false); if (!sysbus_realize(SYS_BUS_DEVICE(&s->prci), errp)) { return; -- 2.25.1