From patchwork Tue Oct 17 15:46:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Helge Deller X-Patchwork-Id: 13425559 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9952DCDB474 for ; Tue, 17 Oct 2023 15:49:50 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qsmHt-00065d-36; Tue, 17 Oct 2023 11:47:17 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qsmHn-00061P-I9 for qemu-devel@nongnu.org; Tue, 17 Oct 2023 11:47:11 -0400 Received: from ams.source.kernel.org ([145.40.68.75]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qsmHk-000363-KU for qemu-devel@nongnu.org; Tue, 17 Oct 2023 11:47:11 -0400 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by ams.source.kernel.org (Postfix) with ESMTP id 63FF1B81EB0; Tue, 17 Oct 2023 15:47:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 79B78C433C8; Tue, 17 Oct 2023 15:47:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1697557626; bh=P9lOt1zhr8EoLg+6EC27KcemcHD4V4dF6HhXq1h5+cg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IBhRy6+S3T29nSUPQDDwXavk7atmGCJAU+sosof6EprhLyY8drtuXlY7KMu82kSvk iJ21/JKSonAVB2LACpwg/PqSiZL5XzFwelWcNQG96G0j4b/QTeubS7Tg0ZHHnarhE0 KZVroRCxVNddynQK5+1ttWHNUPOPAnEraylLHWuW73UolFhiLh6f/kL14ye6tHDKbM 89MpMUGQwl1k0kP0W+mDAPvxD8g+9RkReCIQ1D4DZOgyrLfbz2T/H6n+oAvmhhyNne 6ZJl4ERjSfjTwIV0yPe3AJeAhxqnBb1aShEnSDbRI84IekLaATDAzppBFrWMvRLcdC JTf8O25D+BgsA== From: deller@kernel.org To: qemu-devel@nongnu.org Cc: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Richard Henderson , BALATON Zoltan , Helge Deller Subject: [PATCH v2 09/11] hw/hppa: Provide RTC and DebugOutputPort on CPU #0 Date: Tue, 17 Oct 2023 17:46:43 +0200 Message-ID: <20231017154645.95844-10-deller@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231017154645.95844-1-deller@kernel.org> References: <20231017154645.95844-1-deller@kernel.org> MIME-Version: 1.0 Received-SPF: pass client-ip=145.40.68.75; envelope-from=deller@kernel.org; helo=ams.source.kernel.org X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Helge Deller For SeaBIOS-hppa, the RTC and DebugOutputPort were in the I/O area of the LASI chip of the emulated B160L machine. Since we will add other machines without a LASI chip, move the emulated devices into the I/O area of CPU#0 instead. Signed-off-by: Helge Deller --- hw/hppa/hppa_hardware.h | 1 - hw/hppa/machine.c | 67 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 67 insertions(+), 1 deletion(-) diff --git a/hw/hppa/hppa_hardware.h b/hw/hppa/hppa_hardware.h index a5ac3dd0fd..a9be7bb851 100644 --- a/hw/hppa/hppa_hardware.h +++ b/hw/hppa/hppa_hardware.h @@ -18,7 +18,6 @@ #define LASI_UART_HPA 0xffd05000 #define LASI_SCSI_HPA 0xffd06000 #define LASI_LAN_HPA 0xffd07000 -#define LASI_RTC_HPA 0xffd09000 #define LASI_LPT_HPA 0xffd02000 #define LASI_AUDIO_HPA 0xffd04000 #define LASI_PS2KBD_HPA 0xffd08000 diff --git a/hw/hppa/machine.c b/hw/hppa/machine.c index de925259ea..d459ba631b 100644 --- a/hw/hppa/machine.c +++ b/hw/hppa/machine.c @@ -103,6 +103,63 @@ static ISABus *hppa_isa_bus(void) return isa_bus; } +/* + * Helper functions to emulate RTC clock and DebugOutputPort + */ +static time_t rtc_ref; + +static uint64_t io_cpu_read(void *opaque, hwaddr addr, unsigned size) +{ + uint64_t val = 0; + + switch (addr) { + case 0: /* RTC clock */ + val = time(NULL); + val += rtc_ref; + break; + case 8: /* DebugOutputPort */ + return 0xe9; /* readback */ + } + return val; +} + +static void io_cpu_write(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + unsigned char ch; + Chardev *debugout; + + switch (addr) { + case 0: /* RTC clock */ + rtc_ref = val - time(NULL); + break; + case 8: /* DebugOutputPort */ + ch = val; + debugout = serial_hd(0); + if (debugout) { + qemu_chr_fe_write_all(debugout->be, &ch, 1); + } else { + fprintf(stderr, "%c", ch); + } + break; + } +} + +static const MemoryRegionOps hppa_io_helper_ops = { + .read = io_cpu_read, + .write = io_cpu_write, + .endianness = DEVICE_BIG_ENDIAN, + .valid = { + .min_access_size = 1, + .max_access_size = 8, + }, + .impl = { + .min_access_size = 1, + .max_access_size = 8, + }, +}; + + static uint64_t cpu_hppa_to_phys(void *opaque, uint64_t addr) { addr &= (0x10000000 - 1); @@ -151,6 +208,10 @@ static FWCfgState *create_fw_cfg(MachineState *ms, PCIBus *pci_bus) fw_cfg_add_file(fw_cfg, "/etc/hppa/power-button-addr", g_memdup(&val, sizeof(val)), sizeof(val)); + val = cpu_to_le64(CPU_HPA + 16); + fw_cfg_add_file(fw_cfg, "/etc/hppa/rtc-addr", + g_memdup(&val, sizeof(val)), sizeof(val)); + val = cpu_to_le64(CPU_HPA + 24); fw_cfg_add_file(fw_cfg, "/etc/hppa/DebugOutputPort", g_memdup(&val, sizeof(val)), sizeof(val)); @@ -222,6 +283,12 @@ static void machine_hppa_init(MachineState *machine) g_free(name); } + /* RTC and DebugOutputPort on CPU #0 */ + cpu_region = g_new(MemoryRegion, 1); + memory_region_init_io(cpu_region, OBJECT(cpu[0]), &hppa_io_helper_ops, + cpu[0], "cpu0-io-rtc", 2 * sizeof(uint64_t)); + memory_region_add_subregion(addr_space, CPU_HPA + 16, cpu_region); + /* Main memory region. */ if (machine->ram_size > 3 * GiB) { error_report("RAM size is currently restricted to 3GB");