From nobody Tue Oct 28 12:16:30 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 151494109150054.46240837055416; Tue, 2 Jan 2018 16:58:11 -0800 (PST) Received: from localhost ([::1]:33132 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eWXNi-00076L-Is for importer@patchew.org; Tue, 02 Jan 2018 19:58:10 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59017) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eWXD8-00061q-Er for qemu-devel@nongnu.org; Tue, 02 Jan 2018 19:47:15 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eWXD7-0008JS-4E for qemu-devel@nongnu.org; Tue, 02 Jan 2018 19:47:14 -0500 Received: from mail-pl0-x242.google.com ([2607:f8b0:400e:c01::242]:42140) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1eWXD6-0008J9-SW for qemu-devel@nongnu.org; Tue, 02 Jan 2018 19:47:13 -0500 Received: by mail-pl0-x242.google.com with SMTP id bd8so136067plb.9 for ; Tue, 02 Jan 2018 16:47:12 -0800 (PST) Received: from localhost.localdomain (125-237-39-90.jetstream.xtra.co.nz. [125.237.39.90]) by smtp.gmail.com with ESMTPSA id 75sm97691351pfo.103.2018.01.02.16.47.09 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 02 Jan 2018 16:47:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=lBBzFAIA2xh4zyrMWM0R1i0A+u2qLLwVZpPU2flCzqA=; b=bOfv6pF9mEG/pk1eQO2AGllhfcHtrqUPRnkL/L7LbP+PGIq96EYnj85wakAJPnepXi AVNycgQ3caom8VGy/vP0zp/GoM5OdNJOO97Qq2uxuu16yyVPzOeMXQbJf8JKY4twzXx1 wO/JPdn9H8nStYTlMWXWSEWwjS6UrwfUr6qEmw/JrMEoBOlcorqgj9MLMN/+ceFrg74r fhF8p88cCydXAJci+7UtBFDcI/ICiAvW+cQ3Ykxc46QctfQJOHI1wq/UqI6YwKd9qu0D opi587/0mwcyTwoMyV2+Xo2ZCJRT06lUQnWik0d0qDYsO2pUX7K2bhBGmedCxWSynDlP dCvw== 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; bh=lBBzFAIA2xh4zyrMWM0R1i0A+u2qLLwVZpPU2flCzqA=; b=Ufjpwb/jBIiGwzjHZ6dDSaLi5xsG8D4AODLiRetiau/6jj91AQ14kTGCai1ZcVXLOx dMVr17kdKPEGaBJK0aiEO4Wg4swhp9RG2+pmQgNA05JVWw9Akt6eK6TkU3xxkI3BX0rf WcO72ys9+HabhFCDqUlG1pl0CoJ6ej7KhozVhIAMhk877MPIXevGh9DmTD/CdUxiOAYg mSbjoFYhUYnPmPBL8OYJCuQiy5wk3kJKB3KE4/zQ4LP+LC94kxM/ekkAXMWKsdqSWctZ rBATQ4xi+jve/J8p14YFOyxI7Jht6t4m3q8QS1vvGfAzpuvXmy3dlfLzvGr7nMM73HUo 6dnA== X-Gm-Message-State: AKGB3mK+/yllUevoDSE49x4kP68C3NCVSWcAS5aecx4U4ohl4EbNsxic cY3pVurcRUba4Qbs6k04GDAG2qgP77A= X-Google-Smtp-Source: ACJfBotTLvO0UMqq62gDLOu6OQv79U4OxC5dnrHSIdIzV5/YJjboDpDEf8Nl+e26LcwHBoGsnpvrjQ== X-Received: by 10.84.194.228 with SMTP id h91mr134414pld.177.1514940431780; Tue, 02 Jan 2018 16:47:11 -0800 (PST) From: Michael Clark To: qemu-devel@nongnu.org Date: Wed, 3 Jan 2018 13:44:22 +1300 Message-Id: <1514940265-18093-19-git-send-email-mjc@sifive.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1514940265-18093-1-git-send-email-mjc@sifive.com> References: <1514940265-18093-1-git-send-email-mjc@sifive.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:400e:c01::242 Subject: [Qemu-devel] [PATCH v1 18/21] SiFive RISC-V PRCI Block X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Bastian Koppelmann , Michael Clark , Sagar Karandikar Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Simple model of the PRCI (Power, Reset, Clock, Interrupt) to emulate register reads made by the SDK BSP. Signed-off-by: Michael Clark --- hw/riscv/sifive_prci.c | 107 +++++++++++++++++++++++++++++++++++++= ++++ include/hw/riscv/sifive_prci.h | 43 +++++++++++++++++ 2 files changed, 150 insertions(+) create mode 100644 hw/riscv/sifive_prci.c create mode 100644 include/hw/riscv/sifive_prci.h diff --git a/hw/riscv/sifive_prci.c b/hw/riscv/sifive_prci.c new file mode 100644 index 0000000..5c27696 --- /dev/null +++ b/hw/riscv/sifive_prci.c @@ -0,0 +1,107 @@ +/* + * QEMU SiFive PRCI (Power, Reset, Clock, Interrupt) + * + * Copyright (c) 2017 SiFive, Inc. + * + * Simple model of the PRCI to emulate register reads made by the SDK BSP + * + * Permission is hereby granted, free of charge, to any person obtaining a= copy + * of this software and associated documentation files (the "Software"), t= o deal + * in the Software without restriction, including without limitation the r= ights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or se= ll + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included= in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS= OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OT= HER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING= FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS = IN + * THE SOFTWARE. + */ + +#include "qemu/osdep.h" +#include "hw/sysbus.h" +#include "target/riscv/cpu.h" +#include "hw/riscv/sifive_prci.h" + +/* currently implements enough to mock freedom-e-sdk BSP clock programming= */ + +static uint64_t sifive_prci_read(void *opaque, hwaddr addr, unsigned int s= ize) +{ + if (addr =3D=3D 0 /* PRCI_HFROSCCFG */) { + return 1 << 31; /* ROSC_RDY */ + } + if (addr =3D=3D 8 /* PRCI_PLLCFG */) { + return 1 << 31; /* PLL_LOCK */ + } + hw_error("%s: read: addr=3D0x%x\n", __func__, (int)addr); + return 0; +} + +static void sifive_prci_write(void *opaque, hwaddr addr, + uint64_t val64, unsigned int size) +{ + /* discard writes */ +} + +static const MemoryRegionOps sifive_prci_ops =3D { + .read =3D sifive_prci_read, + .write =3D sifive_prci_write, + .endianness =3D DEVICE_NATIVE_ENDIAN, + .valid =3D { + .min_access_size =3D 4, + .max_access_size =3D 4 + } +}; + +static Property sifive_prci_properties[] =3D { + DEFINE_PROP_END_OF_LIST(), +}; + +static void sifive_prci_init(Object *obj) +{ + SiFivePRCIState *s =3D SIFIVE_PRCI(obj); + + memory_region_init_io(&s->mmio, obj, &sifive_prci_ops, s, + TYPE_SIFIVE_PRCI, 0x8000); + sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mmio); +} + +static void sifive_prci_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc =3D DEVICE_CLASS(klass); + + dc->props =3D sifive_prci_properties; +} + +static const TypeInfo sifive_prci_info =3D { + .name =3D TYPE_SIFIVE_PRCI, + .parent =3D TYPE_SYS_BUS_DEVICE, + .instance_size =3D sizeof(SiFivePRCIState), + .instance_init =3D sifive_prci_init, + .class_init =3D sifive_prci_class_init, +}; + +static void sifive_prci_register_types(void) +{ + type_register_static(&sifive_prci_info); +} + +type_init(sifive_prci_register_types) + + +/* + * Create PRCI device. + */ +DeviceState *sifive_prci_create(hwaddr addr) +{ + DeviceState *dev =3D qdev_create(NULL, TYPE_SIFIVE_PRCI); + qdev_init_nofail(dev); + sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, addr); + return dev; +} diff --git a/include/hw/riscv/sifive_prci.h b/include/hw/riscv/sifive_prci.h new file mode 100644 index 0000000..0e032e5 --- /dev/null +++ b/include/hw/riscv/sifive_prci.h @@ -0,0 +1,43 @@ +/* + * QEMU SiFive PRCI (Power, Reset, Clock, Interrupt) interface + * + * Copyright (c) 2017 SiFive, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a= copy + * of this software and associated documentation files (the "Software"), t= o deal + * in the Software without restriction, including without limitation the r= ights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or se= ll + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included= in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS= OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OT= HER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING= FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS = IN + * THE SOFTWARE. + */ + +#ifndef HW_SIFIVE_PRCI_H +#define HW_SIFIVE_PRCI_H + +#define TYPE_SIFIVE_PRCI "riscv.sifive.prci" + +#define SIFIVE_PRCI(obj) \ + OBJECT_CHECK(SiFivePRCIState, (obj), TYPE_SIFIVE_PRCI) + +typedef struct SiFivePRCIState { + /*< private >*/ + SysBusDevice parent_obj; + + /*< public >*/ + MemoryRegion mmio; +} SiFivePRCIState; + +DeviceState *sifive_prci_create(hwaddr addr); + +#endif --=20 2.7.0