From a8a506c3907093a064dd2d475564e677fb1bf148 Mon Sep 17 00:00:00 2001 From: Xiaojuan Yang Date: Mon, 6 Jun 2022 20:43:20 +0800 Subject: [PATCH] hw/loongarch: Add support loongson3 virt machine type. Emulate a 3A5000 board use the new loongarch instruction. 3A5000 belongs to the Loongson3 series processors. The board consists of a 3A5000 cpu model and the virt bridge. The host 3A5000 board is really complicated and contains many functions.Now for the tcg softmmu mode only part functions are emulated. More detailed info you can see https://github.com/loongson/LoongArch-Documentation Signed-off-by: Xiaojuan Yang Signed-off-by: Song Gao Reviewed-by: Richard Henderson Message-Id: <20220606124333.2060567-31-yangxiaojuan@loongson.cn> Signed-off-by: Richard Henderson --- MAINTAINERS | 4 + .../devices/loongarch64-softmmu/default.mak | 3 + configs/targets/loongarch64-softmmu.mak | 3 + hw/Kconfig | 1 + hw/loongarch/Kconfig | 4 + hw/loongarch/loongson3.c | 94 +++++++++++++++++++ hw/loongarch/meson.build | 4 + hw/meson.build | 1 + include/exec/poison.h | 2 + include/hw/loongarch/virt.h | 31 ++++++ include/sysemu/arch_init.h | 1 + qapi/machine.json | 2 +- target/Kconfig | 1 + target/loongarch/Kconfig | 2 + target/loongarch/cpu.c | 2 + 15 files changed, 154 insertions(+), 1 deletion(-) create mode 100644 configs/devices/loongarch64-softmmu/default.mak create mode 100644 configs/targets/loongarch64-softmmu.mak create mode 100644 hw/loongarch/Kconfig create mode 100644 hw/loongarch/loongson3.c create mode 100644 hw/loongarch/meson.build create mode 100644 include/hw/loongarch/virt.h create mode 100644 target/loongarch/Kconfig diff --git a/MAINTAINERS b/MAINTAINERS index e3f875071a..0c54c03cef 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1129,6 +1129,10 @@ M: Xiaojuan Yang M: Song Gao S: Maintained F: docs/system/loongarch/loongson3.rst +F: configs/targets/loongarch64-softmmu.mak +F: configs/devices/loongarch64-softmmu/default.mak +F: hw/loongarch/ +F: include/hw/loongarch/virt.h M68K Machines ------------- diff --git a/configs/devices/loongarch64-softmmu/default.mak b/configs/devices/loongarch64-softmmu/default.mak new file mode 100644 index 0000000000..928bc117ef --- /dev/null +++ b/configs/devices/loongarch64-softmmu/default.mak @@ -0,0 +1,3 @@ +# Default configuration for loongarch64-softmmu + +CONFIG_LOONGARCH_VIRT=y diff --git a/configs/targets/loongarch64-softmmu.mak b/configs/targets/loongarch64-softmmu.mak new file mode 100644 index 0000000000..666154022f --- /dev/null +++ b/configs/targets/loongarch64-softmmu.mak @@ -0,0 +1,3 @@ +TARGET_ARCH=loongarch64 +TARGET_BASE_ARCH=loongarch +TARGET_SUPPORTS_MTTCG=y diff --git a/hw/Kconfig b/hw/Kconfig index 50e0952889..38233bbb0f 100644 --- a/hw/Kconfig +++ b/hw/Kconfig @@ -50,6 +50,7 @@ source avr/Kconfig source cris/Kconfig source hppa/Kconfig source i386/Kconfig +source loongarch/Kconfig source m68k/Kconfig source microblaze/Kconfig source mips/Kconfig diff --git a/hw/loongarch/Kconfig b/hw/loongarch/Kconfig new file mode 100644 index 0000000000..13e8501897 --- /dev/null +++ b/hw/loongarch/Kconfig @@ -0,0 +1,4 @@ +config LOONGARCH_VIRT + bool + select PCI + select PCI_EXPRESS_GENERIC_BRIDGE diff --git a/hw/loongarch/loongson3.c b/hw/loongarch/loongson3.c new file mode 100644 index 0000000000..7df32f777e --- /dev/null +++ b/hw/loongarch/loongson3.c @@ -0,0 +1,94 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * QEMU loongson 3a5000 develop board emulation + * + * Copyright (c) 2021 Loongson Technology Corporation Limited + */ +#include "qemu/osdep.h" +#include "qemu/units.h" +#include "qemu/datadir.h" +#include "qapi/error.h" +#include "hw/boards.h" +#include "sysemu/sysemu.h" +#include "sysemu/qtest.h" +#include "sysemu/runstate.h" +#include "sysemu/reset.h" +#include "sysemu/rtc.h" +#include "hw/loongarch/virt.h" +#include "exec/address-spaces.h" +#include "target/loongarch/cpu.h" + +static void loongarch_init(MachineState *machine) +{ + const char *cpu_model = machine->cpu_type; + ram_addr_t offset = 0; + ram_addr_t ram_size = machine->ram_size; + uint64_t highram_size = 0; + MemoryRegion *address_space_mem = get_system_memory(); + LoongArchMachineState *lams = LOONGARCH_MACHINE(machine); + int i; + + if (!cpu_model) { + cpu_model = LOONGARCH_CPU_TYPE_NAME("la464"); + } + + if (!strstr(cpu_model, "la464")) { + error_report("LoongArch/TCG needs cpu type la464"); + exit(1); + } + + if (ram_size < 1 * GiB) { + error_report("ram_size must be greater than 1G."); + exit(1); + } + + /* Init CPUs */ + for (i = 0; i < machine->smp.cpus; i++) { + cpu_create(machine->cpu_type); + } + + /* Add memory region */ + memory_region_init_alias(&lams->lowmem, NULL, "loongarch.lowram", + machine->ram, 0, 256 * MiB); + memory_region_add_subregion(address_space_mem, offset, &lams->lowmem); + offset += 256 * MiB; + + highram_size = ram_size - 256 * MiB; + memory_region_init_alias(&lams->highmem, NULL, "loongarch.highmem", + machine->ram, offset, highram_size); + memory_region_add_subregion(address_space_mem, 0x90000000, &lams->highmem); + + /* Add isa io region */ + memory_region_init_alias(&lams->isa_io, NULL, "isa-io", + get_system_io(), 0, LOONGARCH_ISA_IO_SIZE); + memory_region_add_subregion(address_space_mem, LOONGARCH_ISA_IO_BASE, + &lams->isa_io); +} + +static void loongarch_class_init(ObjectClass *oc, void *data) +{ + MachineClass *mc = MACHINE_CLASS(oc); + + mc->desc = "Loongson-3A5000 LS7A1000 machine"; + mc->init = loongarch_init; + mc->default_ram_size = 1 * GiB; + mc->default_cpu_type = LOONGARCH_CPU_TYPE_NAME("la464"); + mc->default_ram_id = "loongarch.ram"; + mc->max_cpus = LOONGARCH_MAX_VCPUS; + mc->is_default = 1; + mc->default_kernel_irqchip_split = false; + mc->block_default_type = IF_VIRTIO; + mc->default_boot_order = "c"; + mc->no_cdrom = 1; +} + +static const TypeInfo loongarch_machine_types[] = { + { + .name = TYPE_LOONGARCH_MACHINE, + .parent = TYPE_MACHINE, + .instance_size = sizeof(LoongArchMachineState), + .class_init = loongarch_class_init, + } +}; + +DEFINE_TYPES(loongarch_machine_types) diff --git a/hw/loongarch/meson.build b/hw/loongarch/meson.build new file mode 100644 index 0000000000..cecb1a5d65 --- /dev/null +++ b/hw/loongarch/meson.build @@ -0,0 +1,4 @@ +loongarch_ss = ss.source_set() +loongarch_ss.add(when: 'CONFIG_LOONGARCH_VIRT', if_true: files('loongson3.c')) + +hw_arch += {'loongarch': loongarch_ss} diff --git a/hw/meson.build b/hw/meson.build index 9992c5101e..c7ac7d3d75 100644 --- a/hw/meson.build +++ b/hw/meson.build @@ -50,6 +50,7 @@ subdir('avr') subdir('cris') subdir('hppa') subdir('i386') +subdir('loongarch') subdir('m68k') subdir('microblaze') subdir('mips') diff --git a/include/exec/poison.h b/include/exec/poison.h index 9f1ca3409c..bbb82cf9ec 100644 --- a/include/exec/poison.h +++ b/include/exec/poison.h @@ -14,6 +14,7 @@ #pragma GCC poison TARGET_CRIS #pragma GCC poison TARGET_HEXAGON #pragma GCC poison TARGET_HPPA +#pragma GCC poison TARGET_LOONGARCH64 #pragma GCC poison TARGET_M68K #pragma GCC poison TARGET_MICROBLAZE #pragma GCC poison TARGET_MIPS @@ -71,6 +72,7 @@ #pragma GCC poison CONFIG_HPPA_DIS #pragma GCC poison CONFIG_I386_DIS #pragma GCC poison CONFIG_HEXAGON_DIS +#pragma GCC poison CONFIG_LOONGARCH_DIS #pragma GCC poison CONFIG_M68K_DIS #pragma GCC poison CONFIG_MICROBLAZE_DIS #pragma GCC poison CONFIG_MIPS_DIS diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h new file mode 100644 index 0000000000..4a4bb3f51f --- /dev/null +++ b/include/hw/loongarch/virt.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Definitions for loongarch board emulation. + * + * Copyright (C) 2021 Loongson Technology Corporation Limited + */ + +#ifndef HW_LOONGARCH_H +#define HW_LOONGARCH_H + +#include "target/loongarch/cpu.h" +#include "hw/boards.h" +#include "qemu/queue.h" + +#define LOONGARCH_MAX_VCPUS 4 + +#define LOONGARCH_ISA_IO_BASE 0x18000000UL +#define LOONGARCH_ISA_IO_SIZE 0x0004000 + +struct LoongArchMachineState { + /*< private >*/ + MachineState parent_obj; + + MemoryRegion lowmem; + MemoryRegion highmem; + MemoryRegion isa_io; +}; + +#define TYPE_LOONGARCH_MACHINE MACHINE_TYPE_NAME("virt") +OBJECT_DECLARE_SIMPLE_TYPE(LoongArchMachineState, LOONGARCH_MACHINE) +#endif diff --git a/include/sysemu/arch_init.h b/include/sysemu/arch_init.h index 79c2591425..8850cb1a14 100644 --- a/include/sysemu/arch_init.h +++ b/include/sysemu/arch_init.h @@ -24,6 +24,7 @@ enum { QEMU_ARCH_RX = (1 << 20), QEMU_ARCH_AVR = (1 << 21), QEMU_ARCH_HEXAGON = (1 << 22), + QEMU_ARCH_LOONGARCH = (1 << 23), }; extern const uint32_t arch_type; diff --git a/qapi/machine.json b/qapi/machine.json index 883ce3f9ea..f750a16396 100644 --- a/qapi/machine.json +++ b/qapi/machine.json @@ -30,7 +30,7 @@ ## { 'enum' : 'SysEmuTarget', 'data' : [ 'aarch64', 'alpha', 'arm', 'avr', 'cris', 'hppa', 'i386', - 'm68k', 'microblaze', 'microblazeel', 'mips', 'mips64', + 'loongarch64', 'm68k', 'microblaze', 'microblazeel', 'mips', 'mips64', 'mips64el', 'mipsel', 'nios2', 'or1k', 'ppc', 'ppc64', 'riscv32', 'riscv64', 'rx', 's390x', 'sh4', 'sh4eb', 'sparc', 'sparc64', 'tricore', diff --git a/target/Kconfig b/target/Kconfig index ae7f24fc66..83da0bd293 100644 --- a/target/Kconfig +++ b/target/Kconfig @@ -4,6 +4,7 @@ source avr/Kconfig source cris/Kconfig source hppa/Kconfig source i386/Kconfig +source loongarch/Kconfig source m68k/Kconfig source microblaze/Kconfig source mips/Kconfig diff --git a/target/loongarch/Kconfig b/target/loongarch/Kconfig new file mode 100644 index 0000000000..46b26b1a85 --- /dev/null +++ b/target/loongarch/Kconfig @@ -0,0 +1,2 @@ +config LOONGARCH64 + bool diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c index b846bd1a8b..3b7d6289d2 100644 --- a/target/loongarch/cpu.c +++ b/target/loongarch/cpu.c @@ -82,6 +82,8 @@ static void loongarch_cpu_set_pc(CPUState *cs, vaddr value) env->pc = value; } +#include "hw/loongarch/virt.h" + void loongarch_cpu_set_irq(void *opaque, int irq, int level) { LoongArchCPU *cpu = opaque;