From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DA8D3C07E99 for ; Fri, 9 Jul 2021 05:52:02 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 939C861441 for ; Fri, 9 Jul 2021 05:52:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 939C861441 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=gibson.dropbear.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:43710 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m1jQf-0005Mc-Mz for qemu-devel@archiver.kernel.org; Fri, 09 Jul 2021 01:52:01 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35516) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m1iuM-0002cw-TD; Fri, 09 Jul 2021 01:18:39 -0400 Received: from ozlabs.org ([203.11.71.1]:56681) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m1iu9-00025L-LX; Fri, 09 Jul 2021 01:18:38 -0400 Received: by ozlabs.org (Postfix, from userid 1007) id 4GLhHf5xLvz9t9b; Fri, 9 Jul 2021 15:17:34 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gibson.dropbear.id.au; s=201602; t=1625807854; bh=0wVnwfa6ea8GVwzKdrAxx1mR1Zr6PkQYevmrq27QpMQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UIjwMosAFUXh66AkgMfLpOUEs2OivXQNhG+0+nd2sfsxgkVi2lSlNIJdh5TvIEeyJ qtLIJ3w6VtpCzR4j0LlwpRdlmVadbxnaqtPzfxNBzm/KwPF7lhVFyxHVd0YiEIBZA8 aLpBprUe7GDLScXM0EWk5QWXWrqhTTv33afoBg+g= From: David Gibson To: peter.maydell@linaro.org, groug@kaod.org Subject: [PULL 29/33] ppc/pegasos2: Implement some RTAS functions with VOF Date: Fri, 9 Jul 2021 15:17:24 +1000 Message-Id: <20210709051728.170203-30-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210709051728.170203-1-david@gibson.dropbear.id.au> References: <20210709051728.170203-1-david@gibson.dropbear.id.au> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=203.11.71.1; envelope-from=dgibson@ozlabs.org; helo=ozlabs.org X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HEADER_FROM_DIFFERENT_DOMAINS=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=unavailable 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: aik@ozlabs.ru, David Gibson , qemu-ppc@nongnu.org, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: BALATON Zoltan Linux uses RTAS functions to access PCI devices so we need to provide these with VOF. Implement some of the most important functions to allow booting Linux with VOF. With this the board is now usable without a binary ROM image and we can enable it by default as other boards. Signed-off-by: BALATON Zoltan Message-Id: <20210708215113.B3F747456E3@zero.eik.bme.hu> Signed-off-by: David Gibson --- default-configs/devices/ppc-softmmu.mak | 2 +- hw/ppc/pegasos2.c | 137 ++++++++++++++++++++++++ 2 files changed, 138 insertions(+), 1 deletion(-) diff --git a/default-configs/devices/ppc-softmmu.mak b/default-configs/devices/ppc-softmmu.mak index c2d41198cd..4535993d8d 100644 --- a/default-configs/devices/ppc-softmmu.mak +++ b/default-configs/devices/ppc-softmmu.mak @@ -14,7 +14,7 @@ CONFIG_SAM460EX=y CONFIG_MAC_OLDWORLD=y CONFIG_MAC_NEWWORLD=y -CONFIG_PEGASOS2=n +CONFIG_PEGASOS2=y # For PReP CONFIG_PREP=y diff --git a/hw/ppc/pegasos2.c b/hw/ppc/pegasos2.c index cf1dc53c83..9a6ae867e4 100644 --- a/hw/ppc/pegasos2.c +++ b/hw/ppc/pegasos2.c @@ -43,6 +43,7 @@ #define PROM_SIZE 0x80000 #define KVMPPC_HCALL_BASE 0xf000 +#define KVMPPC_H_RTAS (KVMPPC_HCALL_BASE + 0x0) #define KVMPPC_H_VOF_CLIENT (KVMPPC_HCALL_BASE + 0x5) #define H_SUCCESS 0 @@ -195,6 +196,30 @@ static void pegasos2_init(MachineState *machine) } } +static uint32_t pegasos2_pci_config_read(AddressSpace *as, int bus, + uint32_t addr, uint32_t len) +{ + hwaddr pcicfg = (bus ? 0xf1000c78 : 0xf1000cf8); + uint32_t val = 0xffffffff; + + stl_le_phys(as, pcicfg, addr | BIT(31)); + switch (len) { + case 4: + val = ldl_le_phys(as, pcicfg + 4); + break; + case 2: + val = lduw_le_phys(as, pcicfg + 4); + break; + case 1: + val = ldub_phys(as, pcicfg + 4); + break; + default: + qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid length\n", __func__); + break; + } + return val; +} + static void pegasos2_pci_config_write(AddressSpace *as, int bus, uint32_t addr, uint32_t len, uint32_t val) { @@ -304,6 +329,87 @@ static void pegasos2_machine_reset(MachineState *machine) pm->cpu->vhyp = PPC_VIRTUAL_HYPERVISOR(machine); } +enum pegasos2_rtas_tokens { + RTAS_RESTART_RTAS = 0, + RTAS_NVRAM_FETCH = 1, + RTAS_NVRAM_STORE = 2, + RTAS_GET_TIME_OF_DAY = 3, + RTAS_SET_TIME_OF_DAY = 4, + RTAS_EVENT_SCAN = 6, + RTAS_CHECK_EXCEPTION = 7, + RTAS_READ_PCI_CONFIG = 8, + RTAS_WRITE_PCI_CONFIG = 9, + RTAS_DISPLAY_CHARACTER = 10, + RTAS_SET_INDICATOR = 11, + RTAS_POWER_OFF = 17, + RTAS_SUSPEND = 18, + RTAS_HIBERNATE = 19, + RTAS_SYSTEM_REBOOT = 20, +}; + +static target_ulong pegasos2_rtas(PowerPCCPU *cpu, Pegasos2MachineState *pm, + target_ulong args_real) +{ + AddressSpace *as = CPU(cpu)->as; + uint32_t token = ldl_be_phys(as, args_real); + uint32_t nargs = ldl_be_phys(as, args_real + 4); + uint32_t nrets = ldl_be_phys(as, args_real + 8); + uint32_t args = args_real + 12; + uint32_t rets = args_real + 12 + nargs * 4; + + if (nrets < 1) { + qemu_log_mask(LOG_GUEST_ERROR, "Too few return values in RTAS call\n"); + return H_PARAMETER; + } + switch (token) { + case RTAS_READ_PCI_CONFIG: + { + uint32_t addr, len, val; + + if (nargs != 2 || nrets != 2) { + stl_be_phys(as, rets, -1); + return H_PARAMETER; + } + addr = ldl_be_phys(as, args); + len = ldl_be_phys(as, args + 4); + val = pegasos2_pci_config_read(as, !(addr >> 24), + addr & 0x0fffffff, len); + stl_be_phys(as, rets, 0); + stl_be_phys(as, rets + 4, val); + return H_SUCCESS; + } + case RTAS_WRITE_PCI_CONFIG: + { + uint32_t addr, len, val; + + if (nargs != 3 || nrets != 1) { + stl_be_phys(as, rets, -1); + return H_PARAMETER; + } + addr = ldl_be_phys(as, args); + len = ldl_be_phys(as, args + 4); + val = ldl_be_phys(as, args + 8); + pegasos2_pci_config_write(as, !(addr >> 24), + addr & 0x0fffffff, len, val); + stl_be_phys(as, rets, 0); + return H_SUCCESS; + } + case RTAS_DISPLAY_CHARACTER: + if (nargs != 1 || nrets != 1) { + stl_be_phys(as, rets, -1); + return H_PARAMETER; + } + qemu_log_mask(LOG_UNIMP, "%c", ldl_be_phys(as, args)); + stl_be_phys(as, rets, 0); + return H_SUCCESS; + default: + qemu_log_mask(LOG_UNIMP, "Unknown RTAS token %u (args=%u, rets=%u)\n", + token, nargs, nrets); + stl_be_phys(as, rets, 0); + return H_SUCCESS; + } +} + static void pegasos2_hypercall(PPCVirtualHypervisor *vhyp, PowerPCCPU *cpu) { Pegasos2MachineState *pm = PEGASOS2_MACHINE(vhyp); @@ -315,6 +421,8 @@ static void pegasos2_hypercall(PPCVirtualHypervisor *vhyp, PowerPCCPU *cpu) if (msr_pr) { qemu_log_mask(LOG_GUEST_ERROR, "Hypercall made with MSR[PR]=1\n"); env->gpr[3] = H_PRIVILEGE; + } else if (env->gpr[3] == KVMPPC_H_RTAS) { + env->gpr[3] = pegasos2_rtas(cpu, pm, env->gpr[4]); } else if (env->gpr[3] == KVMPPC_H_VOF_CLIENT) { int ret = vof_client_call(MACHINE(pm), pm->vof, pm->fdt_blob, env->gpr[4]); @@ -687,6 +795,35 @@ static void *build_fdt(MachineState *machine, int *fdt_size) qemu_fdt_setprop_string(fdt, "/failsafe", "device_type", "serial"); qemu_fdt_setprop_string(fdt, "/failsafe", "name", "failsafe"); + qemu_fdt_add_subnode(fdt, "/rtas"); + qemu_fdt_setprop_cell(fdt, "/rtas", "system-reboot", RTAS_SYSTEM_REBOOT); + qemu_fdt_setprop_cell(fdt, "/rtas", "hibernate", RTAS_HIBERNATE); + qemu_fdt_setprop_cell(fdt, "/rtas", "suspend", RTAS_SUSPEND); + qemu_fdt_setprop_cell(fdt, "/rtas", "power-off", RTAS_POWER_OFF); + qemu_fdt_setprop_cell(fdt, "/rtas", "set-indicator", RTAS_SET_INDICATOR); + qemu_fdt_setprop_cell(fdt, "/rtas", "display-character", + RTAS_DISPLAY_CHARACTER); + qemu_fdt_setprop_cell(fdt, "/rtas", "write-pci-config", + RTAS_WRITE_PCI_CONFIG); + qemu_fdt_setprop_cell(fdt, "/rtas", "read-pci-config", + RTAS_READ_PCI_CONFIG); + /* Pegasos2 firmware misspells check-exception and guests use that */ + qemu_fdt_setprop_cell(fdt, "/rtas", "check-execption", + RTAS_CHECK_EXCEPTION); + qemu_fdt_setprop_cell(fdt, "/rtas", "event-scan", RTAS_EVENT_SCAN); + qemu_fdt_setprop_cell(fdt, "/rtas", "set-time-of-day", + RTAS_SET_TIME_OF_DAY); + qemu_fdt_setprop_cell(fdt, "/rtas", "get-time-of-day", + RTAS_GET_TIME_OF_DAY); + qemu_fdt_setprop_cell(fdt, "/rtas", "nvram-store", RTAS_NVRAM_STORE); + qemu_fdt_setprop_cell(fdt, "/rtas", "nvram-fetch", RTAS_NVRAM_FETCH); + qemu_fdt_setprop_cell(fdt, "/rtas", "restart-rtas", RTAS_RESTART_RTAS); + qemu_fdt_setprop_cell(fdt, "/rtas", "rtas-error-log-max", 0); + qemu_fdt_setprop_cell(fdt, "/rtas", "rtas-event-scan-rate", 0); + qemu_fdt_setprop_cell(fdt, "/rtas", "rtas-display-device", 0); + qemu_fdt_setprop_cell(fdt, "/rtas", "rtas-size", 20); + qemu_fdt_setprop_cell(fdt, "/rtas", "rtas-version", 1); + /* cpus */ qemu_fdt_add_subnode(fdt, "/cpus"); qemu_fdt_setprop_cell(fdt, "/cpus", "#cpus", 1); -- 2.31.1