From nobody Fri Aug 1 12:37:12 2025 X-Original-To: dev-commits-src-main@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4btlp06zJVz63rTY; Fri, 01 Aug 2025 12:37:12 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R10" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4btlp058vLz3Pm5; Fri, 01 Aug 2025 12:37:12 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1754051832; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=PESGlCN3YhsmeqTxyE3Jhqb98hWepPdb701737gCG7o=; b=Ouw0jfNmtXRgIC6I1CXgDfNiti1g+kWMVIVDievFMk25DfoOdDwxYa9yvf9vzSNPDx12BY DAHHx6vusQTvP57KkRZPIlinNpCjrq4BjAb8Uye9DFuqGEl+rdqbNBmWlksdVW5nmBq+El zkgSMRk+5nee9Q4CTm1tHJzACh9AfihbJ8qpFdWUe0bl2ZToRNej7vlWb20mz5Z1TnZ7yI +ky0IDWp7P+D9oGqimropJ07pgEdHB8YFGW8QEBrU6WQAbPlXInIkUkBRG/1cfk5cCyGY9 tGS5nAEizInSx3QFJD/A1gTjuQOl0Y7uqEDdHsxT2kUDu25mTJ95X8ps7tGJ+Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1754051832; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=PESGlCN3YhsmeqTxyE3Jhqb98hWepPdb701737gCG7o=; b=GfqPQrug3mtPTIeCEWLQfwZlFwImhhsRclJ2tPF6K53+TVfuNtD1uoxIImUpA3ed5XMw0J R7wFyKbcqjY/06795Vliun1bVH7kva4r0zM4IsNWL040Ny6rZbEreI6sOiy4sK3yeYA4Jv aWYTxM1321OLCRXavwkOo1tK3+eHDImCY9XOEDvG1WqV5ArcWV9nLZJK6y/yF+7Ot7RiVU buZGzUCAxFZ4ANbXaJkwTRaf7MT0I5bAD4bHvW26rbEjYgQzQJArgWORfX22/EPUrt4UmP Q8bxEw03965CO4u1Mt/9GWLrBRqglS7SKH/LlgVGGw7f2xstGM+sAWbCYWpZIw== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1754051832; a=rsa-sha256; cv=none; b=gNcJZAGkjNLkBazfzvSUqNE3kKvC3sLayLtqcJtm0tMQ4QxNHXMwiHN1SdEA0p5dorLZQW QUNGRCKJ7Gw9E0sjjMpnWoXLx7dDYLhAclnB+FmdPT1ekmnpLA8yhAGpinoWBoe+TnNjW8 Gc/VYrxD5VK8V8JLDeQBe2Ynk5CzhfYoWJ6z2YDidGmFxVXMrAxz5uHsHgHm9I0Amw6lKG uCi+OG8AIOpn9x51Y83pJkeYhnKO477J3ldq7926CHqLRpm5eCZRwUWSBWVSq7ncNLNOyF WZF2hHqJZ6+bjftmJZEhrL51nkUMNMKNzD8UOmR+O9ZCw7g3E/KcCyK6GL5y/A== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4btlp04dD4znny; Fri, 01 Aug 2025 12:37:12 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.18.1/8.18.1) with ESMTP id 571CbCM5052067; Fri, 1 Aug 2025 12:37:12 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.18.1/8.18.1/Submit) id 571CbCuL052064; Fri, 1 Aug 2025 12:37:12 GMT (envelope-from git) Date: Fri, 1 Aug 2025 12:37:12 GMT Message-Id: <202508011237.571CbCuL052064@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Bojan =?utf-8?Q?Novkovi=C4=87?= Subject: git: e07254d1483f - main - riscv: Add driver for the cvitek reboot controller List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-main@freebsd.org Sender: owner-dev-commits-src-main@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: bnovkov X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: e07254d1483fad260dec7e2423043f544dfa85f9 Auto-Submitted: auto-generated The branch main has been updated by bnovkov: URL: https://cgit.FreeBSD.org/src/commit/?id=e07254d1483fad260dec7e2423043f544dfa85f9 commit e07254d1483fad260dec7e2423043f544dfa85f9 Author: Bojan Novković AuthorDate: 2025-01-18 19:11:39 +0000 Commit: Bojan Novković CommitDate: 2025-08-01 12:35:54 +0000 riscv: Add driver for the cvitek reboot controller This patch adds support for the cvitek reboot controller. This controller is present on the Milk-V riscv SoCs. Reviewed by: br, mhorne, jrtc27 Differential review: https://reviews.freebsd.org/D48532 --- sys/riscv/cvitek/cvitek_restart.c | 158 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 158 insertions(+) diff --git a/sys/riscv/cvitek/cvitek_restart.c b/sys/riscv/cvitek/cvitek_restart.c new file mode 100644 index 000000000000..53df126d5171 --- /dev/null +++ b/sys/riscv/cvitek/cvitek_restart.c @@ -0,0 +1,158 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2024 Bojan Novković + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Driver for cvitek's poweroff/restart controller. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include +#include +#include + +#define RTC_CTRL0_UNLOCK 0x4 +#define RTC_CTRL0_UNLOCK_KEY 0xAB18 + +#define RTC_CTRL0 0x8 +#define RTC_CTRL0_RESERVED_MASK 0xFFFF0800 +#define RTC_CTRL0_REQ_SHUTDOWN 0x01 +#define RTC_CTRL0_REQ_POWERCYCLE 0x08 +#define RTC_CTRL0_REQ_WARM_RESET 0x10 + +#define RTC_BASE_OFFSET 0x1000 +#define RTC_EN_SHDN_REQ (RTC_BASE_OFFSET + 0xC0) +#define RTC_EN_PWR_CYC_REQ (RTC_BASE_OFFSET + 0xC8) +#define RTC_EN_WARM_RST_REQ (RTC_BASE_OFFSET + 0xCC) + +struct cvitek_restart_softc { + int reg_rid; + struct resource *reg; + eventhandler_tag tag; +}; + +static void +cvitek_restart_shutdown_final(device_t dev, int howto) +{ + struct cvitek_restart_softc *sc; + uint32_t val; + + sc = device_get_softc(dev); + val = RTC_CTRL0_RESERVED_MASK; + if ((howto & RB_POWEROFF) != 0) + val |= RTC_CTRL0_REQ_SHUTDOWN; + else if ((howto & RB_POWERCYCLE) != 0) + val |= RTC_CTRL0_REQ_POWERCYCLE; + else + val |= RTC_CTRL0_REQ_WARM_RESET; + + /* Unlock writes to 'rtc_ctrl0'. */ + bus_write_4(sc->reg, RTC_CTRL0_UNLOCK, RTC_CTRL0_UNLOCK_KEY); + bus_write_4(sc->reg, RTC_CTRL0, val); + DELAY(1000); + + device_printf(dev, "Poweroff request failed\n"); +} + +static int +cvitek_restart_probe(device_t dev) +{ + + if (!ofw_bus_status_okay(dev)) + return (ENXIO); + + if (ofw_bus_is_compatible(dev, "cvitek,restart")) { + device_set_desc(dev, "Cvitek restart controller"); + return (BUS_PROBE_DEFAULT); + } + return (ENXIO); +} + +static int +cvitek_restart_attach(device_t dev) +{ + struct cvitek_restart_softc *sc; + + sc = device_get_softc(dev); + sc->reg = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->reg_rid, + RF_ACTIVE); + if (sc->reg == NULL) { + device_printf(dev, "can't map RTC regs\n"); + return (ENXIO); + } + + /* Enable requests for various poweroff methods. */ + bus_write_4(sc->reg, RTC_EN_SHDN_REQ, 0x1); + bus_write_4(sc->reg, RTC_EN_PWR_CYC_REQ, 0x1); + bus_write_4(sc->reg, RTC_EN_WARM_RST_REQ, 0x1); + + sc->tag = EVENTHANDLER_REGISTER(shutdown_final, + cvitek_restart_shutdown_final, dev, SHUTDOWN_PRI_LAST); + + return (0); +} + +static int +cvitek_restart_detach(device_t dev) +{ + struct cvitek_restart_softc *sc; + + sc = device_get_softc(dev); + if (sc->reg == NULL) + return (0); + + bus_write_4(sc->reg, RTC_EN_SHDN_REQ, 0x0); + bus_write_4(sc->reg, RTC_EN_PWR_CYC_REQ, 0x0); + bus_write_4(sc->reg, RTC_EN_WARM_RST_REQ, 0x0); + + bus_release_resource(dev, SYS_RES_MEMORY, sc->reg_rid, sc->reg); + EVENTHANDLER_DEREGISTER(shutdown_final, sc->tag); + + return (0); +} + +static device_method_t cvitek_restart_methods[] = { + DEVMETHOD(device_probe, cvitek_restart_probe), + DEVMETHOD(device_attach, cvitek_restart_attach), + DEVMETHOD(device_detach, cvitek_restart_detach), + + DEVMETHOD_END +}; + +DEFINE_CLASS_0(cvitek_restart, cvitek_restart_driver, cvitek_restart_methods, + sizeof(struct cvitek_restart_softc)); +DRIVER_MODULE(cvitek_restart, simplebus, cvitek_restart_driver, NULL, NULL);