From patchwork Fri Dec 10 10:07:26 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yifei Jiang X-Patchwork-Id: 12669187 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 ACE41C433F5 for ; Fri, 10 Dec 2021 10:16:15 +0000 (UTC) Received: from localhost ([::1]:48704 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mvcwo-0000oY-KL for qemu-devel@archiver.kernel.org; Fri, 10 Dec 2021 05:16:14 -0500 Received: from eggs.gnu.org ([209.51.188.92]:46984) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mvcon-00033m-3r; Fri, 10 Dec 2021 05:07:57 -0500 Received: from szxga02-in.huawei.com ([45.249.212.188]:2845) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mvcoj-0006Mo-Kj; Fri, 10 Dec 2021 05:07:56 -0500 Received: from kwepemi100008.china.huawei.com (unknown [172.30.72.56]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4J9RRB6v9jzbl7D; Fri, 10 Dec 2021 18:07:34 +0800 (CST) Received: from kwepemm600017.china.huawei.com (7.193.23.234) by kwepemi100008.china.huawei.com (7.221.188.57) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.20; Fri, 10 Dec 2021 18:07:49 +0800 Received: from huawei.com (10.174.186.236) by kwepemm600017.china.huawei.com (7.193.23.234) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.20; Fri, 10 Dec 2021 18:07:47 +0800 To: , CC: , , , , , , , , , , , Yifei Jiang , Mingwang Li , Alistair Francis Subject: [PATCH v2 06/12] target/riscv: Support start kernel directly by KVM Date: Fri, 10 Dec 2021 18:07:26 +0800 Message-ID: <20211210100732.1080-7-jiangyifei@huawei.com> X-Mailer: git-send-email 2.26.2.windows.1 In-Reply-To: <20211210100732.1080-1-jiangyifei@huawei.com> References: <20211210100732.1080-1-jiangyifei@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.174.186.236] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To kwepemm600017.china.huawei.com (7.193.23.234) X-CFilter-Loop: Reflected Received-SPF: pass client-ip=45.249.212.188; envelope-from=jiangyifei@huawei.com; helo=szxga02-in.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H2=-0.001, 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" Reply-to: Yifei Jiang X-Patchwork-Original-From: Yifei Jiang via From: Yifei Jiang Get kernel and fdt start address in virt.c, and pass them to KVM when cpu reset. In addition, add kvm_riscv.h to place riscv specific interface. Signed-off-by: Yifei Jiang Signed-off-by: Mingwang Li Reviewed-by: Alistair Francis --- hw/riscv/boot.c | 11 ++++++++ hw/riscv/virt.c | 54 ++++++++++++++++++++++++++++------------ include/hw/riscv/boot.h | 1 + target/riscv/cpu.c | 8 ++++++ target/riscv/cpu.h | 3 +++ target/riscv/kvm-stub.c | 25 +++++++++++++++++++ target/riscv/kvm.c | 14 +++++++++++ target/riscv/kvm_riscv.h | 24 ++++++++++++++++++ target/riscv/meson.build | 2 +- 9 files changed, 125 insertions(+), 17 deletions(-) create mode 100644 target/riscv/kvm-stub.c create mode 100644 target/riscv/kvm_riscv.h diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c index 519fa455a1..00df6d7810 100644 --- a/hw/riscv/boot.c +++ b/hw/riscv/boot.c @@ -317,3 +317,14 @@ void riscv_setup_rom_reset_vec(MachineState *machine, RISCVHartArrayState *harts return; } + +void riscv_setup_direct_kernel(hwaddr kernel_addr, hwaddr fdt_addr) +{ + CPUState *cs; + + for (cs = first_cpu; cs; cs = CPU_NEXT(cs)) { + RISCVCPU *riscv_cpu = RISCV_CPU(cs); + riscv_cpu->env.kernel_addr = kernel_addr; + riscv_cpu->env.fdt_addr = fdt_addr; + } +} diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c index 3af074148e..c8bcd9d9e5 100644 --- a/hw/riscv/virt.c +++ b/hw/riscv/virt.c @@ -38,6 +38,7 @@ #include "chardev/char.h" #include "sysemu/device_tree.h" #include "sysemu/sysemu.h" +#include "sysemu/kvm.h" #include "hw/pci/pci.h" #include "hw/pci-host/gpex.h" #include "hw/display/ramfb.h" @@ -801,23 +802,25 @@ static void virt_machine_init(MachineState *machine) hart_count, &error_abort); sysbus_realize(SYS_BUS_DEVICE(&s->soc[i]), &error_abort); - /* Per-socket CLINT */ - riscv_aclint_swi_create( - memmap[VIRT_CLINT].base + i * memmap[VIRT_CLINT].size, - base_hartid, hart_count, false); - riscv_aclint_mtimer_create( - memmap[VIRT_CLINT].base + i * memmap[VIRT_CLINT].size + - RISCV_ACLINT_SWI_SIZE, - RISCV_ACLINT_DEFAULT_MTIMER_SIZE, base_hartid, hart_count, - RISCV_ACLINT_DEFAULT_MTIMECMP, RISCV_ACLINT_DEFAULT_MTIME, - RISCV_ACLINT_DEFAULT_TIMEBASE_FREQ, true); - - /* Per-socket ACLINT SSWI */ - if (s->have_aclint) { + if (!kvm_enabled()) { + /* Per-socket CLINT */ riscv_aclint_swi_create( - memmap[VIRT_ACLINT_SSWI].base + - i * memmap[VIRT_ACLINT_SSWI].size, - base_hartid, hart_count, true); + memmap[VIRT_CLINT].base + i * memmap[VIRT_CLINT].size, + base_hartid, hart_count, false); + riscv_aclint_mtimer_create( + memmap[VIRT_CLINT].base + i * memmap[VIRT_CLINT].size + + RISCV_ACLINT_SWI_SIZE, + RISCV_ACLINT_DEFAULT_MTIMER_SIZE, base_hartid, hart_count, + RISCV_ACLINT_DEFAULT_MTIMECMP, RISCV_ACLINT_DEFAULT_MTIME, + RISCV_ACLINT_DEFAULT_TIMEBASE_FREQ, true); + + /* Per-socket ACLINT SSWI */ + if (s->have_aclint) { + riscv_aclint_swi_create( + memmap[VIRT_ACLINT_SSWI].base + + i * memmap[VIRT_ACLINT_SSWI].size, + base_hartid, hart_count, true); + } } /* Per-socket PLIC hart topology configuration string */ @@ -884,6 +887,16 @@ static void virt_machine_init(MachineState *machine) memory_region_add_subregion(system_memory, memmap[VIRT_MROM].base, mask_rom); + /* + * Only direct boot kernel is currently supported for KVM VM, + * so the "-bios" parameter is ignored and treated like "-bios none" + * when KVM is enabled. + */ + if (kvm_enabled()) { + g_free(machine->firmware); + machine->firmware = g_strdup("none"); + } + if (riscv_is_32bit(&s->soc[0])) { firmware_end_addr = riscv_find_and_load_firmware(machine, RISCV32_BIOS_BIN, start_addr, NULL); @@ -941,6 +954,15 @@ static void virt_machine_init(MachineState *machine) virt_memmap[VIRT_MROM].size, kernel_entry, fdt_load_addr, machine->fdt); + /* + * Only direct boot kernel is currently supported for KVM VM, + * So here setup kernel start address and fdt address. + * TODO:Support firmware loading and integrate to TCG start + */ + if (kvm_enabled()) { + riscv_setup_direct_kernel(kernel_entry, fdt_load_addr); + } + /* SiFive Test MMIO device */ sifive_test_create(memmap[VIRT_TEST].base); diff --git a/include/hw/riscv/boot.h b/include/hw/riscv/boot.h index baff11dd8a..5834c234aa 100644 --- a/include/hw/riscv/boot.h +++ b/include/hw/riscv/boot.h @@ -58,5 +58,6 @@ void riscv_rom_copy_firmware_info(MachineState *machine, hwaddr rom_base, hwaddr rom_size, uint32_t reset_vec_size, uint64_t kernel_entry); +void riscv_setup_direct_kernel(hwaddr kernel_addr, hwaddr fdt_addr); #endif /* RISCV_BOOT_H */ diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index f812998123..1c944872a3 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -29,6 +29,8 @@ #include "hw/qdev-properties.h" #include "migration/vmstate.h" #include "fpu/softfloat-helpers.h" +#include "sysemu/kvm.h" +#include "kvm_riscv.h" /* RISC-V CPU definitions */ @@ -380,6 +382,12 @@ static void riscv_cpu_reset(DeviceState *dev) cs->exception_index = RISCV_EXCP_NONE; env->load_res = -1; set_default_nan_mode(1, &env->fp_status); + +#ifndef CONFIG_USER_ONLY + if (kvm_enabled()) { + kvm_riscv_reset_vcpu(cpu); + } +#endif } static void riscv_cpu_disas_set_info(CPUState *s, disassemble_info *info) diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 0760c0af93..2807eb1bcb 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -255,6 +255,9 @@ struct CPURISCVState { /* Fields from here on are preserved across CPU reset. */ QEMUTimer *timer; /* Internal timer */ + + hwaddr kernel_addr; + hwaddr fdt_addr; }; OBJECT_DECLARE_TYPE(RISCVCPU, RISCVCPUClass, diff --git a/target/riscv/kvm-stub.c b/target/riscv/kvm-stub.c new file mode 100644 index 0000000000..39b96fe3f4 --- /dev/null +++ b/target/riscv/kvm-stub.c @@ -0,0 +1,25 @@ +/* + * QEMU KVM RISC-V specific function stubs + * + * Copyright (c) 2020 Huawei Technologies Co., Ltd + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2 or later, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see . + */ +#include "qemu/osdep.h" +#include "cpu.h" +#include "kvm_riscv.h" + +void kvm_riscv_reset_vcpu(RISCVCPU *cpu) +{ + abort(); +} diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c index e695b91dc7..db6d8a5b6e 100644 --- a/target/riscv/kvm.c +++ b/target/riscv/kvm.c @@ -37,6 +37,7 @@ #include "hw/irq.h" #include "qemu/log.h" #include "hw/loader.h" +#include "kvm_riscv.h" static uint64_t kvm_riscv_reg_id(CPURISCVState *env, uint64_t type, uint64_t idx) { @@ -369,6 +370,19 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run) return 0; } +void kvm_riscv_reset_vcpu(RISCVCPU *cpu) +{ + CPURISCVState *env = &cpu->env; + + if (!kvm_enabled()) { + return; + } + env->pc = cpu->env.kernel_addr; + env->gpr[10] = kvm_arch_vcpu_id(CPU(cpu)); /* a0 */ + env->gpr[11] = cpu->env.fdt_addr; /* a1 */ + env->satp = 0; +} + bool kvm_arch_cpu_check_are_resettable(void) { return true; diff --git a/target/riscv/kvm_riscv.h b/target/riscv/kvm_riscv.h new file mode 100644 index 0000000000..f38c82bf59 --- /dev/null +++ b/target/riscv/kvm_riscv.h @@ -0,0 +1,24 @@ +/* + * QEMU KVM support -- RISC-V specific functions. + * + * Copyright (c) 2020 Huawei Technologies Co., Ltd + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2 or later, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see . + */ + +#ifndef QEMU_KVM_RISCV_H +#define QEMU_KVM_RISCV_H + +void kvm_riscv_reset_vcpu(RISCVCPU *cpu); + +#endif diff --git a/target/riscv/meson.build b/target/riscv/meson.build index 2faf08a941..fe41cc5805 100644 --- a/target/riscv/meson.build +++ b/target/riscv/meson.build @@ -19,7 +19,7 @@ riscv_ss.add(files( 'bitmanip_helper.c', 'translate.c', )) -riscv_ss.add(when: 'CONFIG_KVM', if_true: files('kvm.c')) +riscv_ss.add(when: 'CONFIG_KVM', if_true: files('kvm.c'), if_false: files('kvm-stub.c')) riscv_softmmu_ss = ss.source_set() riscv_softmmu_ss.add(files(