From a8a506c3907093a064dd2d475564e677fb1bf148 Mon Sep 17 00:00:00 2001 From: Xiaojuan Yang Date: Mon, 6 Jun 2022 20:43:20 +0800 Subject: 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 --- hw/Kconfig | 1 + hw/loongarch/Kconfig | 4 +++ hw/loongarch/loongson3.c | 94 ++++++++++++++++++++++++++++++++++++++++++++++++ hw/loongarch/meson.build | 4 +++ hw/meson.build | 1 + 5 files changed, 104 insertions(+) create mode 100644 hw/loongarch/Kconfig create mode 100644 hw/loongarch/loongson3.c create mode 100644 hw/loongarch/meson.build (limited to 'hw') 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') -- cgit v1.2.3