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X-Received-From: 68.232.141.245 Subject: [Qemu-riscv] [PATCH for 4.1 v1 6/6] riscv: Add a generic spike machine X-BeenThere: qemu-riscv@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Mar 2019 18:22:50 -0000 Add a generic spike machine (not tied to a version) and deprecate the spike mahines that are tied to a specific version. As we can now specify the CPU via the command line we no londer need specific versions of the spike machines. Signed-off-by: Alistair Francis --- hw/riscv/spike.c | 106 ++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 105 insertions(+), 1 deletion(-) diff --git a/hw/riscv/spike.c b/hw/riscv/spike.c index 2a000a5800..9d3f7cec4d 100644 --- a/hw/riscv/spike.c +++ b/hw/riscv/spike.c @@ -39,6 +39,7 @@ #include "chardev/char.h" #include "sysemu/arch_init.h" #include "sysemu/device_tree.h" +#include "sysemu/qtest.h" #include "exec/address-spaces.h" #include "elf.h" =20 @@ -160,7 +161,89 @@ static void create_fdt(SpikeState *s, const struct Mem= mapEntry *memmap, qemu_fdt_add_subnode(fdt, "/chosen"); qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline); } - } +} + +static void spike_board_init(MachineState *machine) +{ + const struct MemmapEntry *memmap =3D spike_memmap; + + SpikeState *s =3D g_new0(SpikeState, 1); + MemoryRegion *system_memory =3D get_system_memory(); + MemoryRegion *main_mem =3D g_new(MemoryRegion, 1); + MemoryRegion *mask_rom =3D g_new(MemoryRegion, 1); + int i; + + /* Initialize SOC */ + object_initialize_child(OBJECT(machine), "soc", &s->soc, sizeof(s->soc= ), + TYPE_RISCV_HART_ARRAY, &error_abort, NULL); + object_property_set_str(OBJECT(&s->soc), machine->cpu_type, "cpu-type"= , + &error_abort); + object_property_set_int(OBJECT(&s->soc), smp_cpus, "num-harts", + &error_abort); + object_property_set_bool(OBJECT(&s->soc), true, "realized", + &error_abort); + + /* register system main memory (actual RAM) */ + memory_region_init_ram(main_mem, NULL, "riscv.spike.ram", + machine->ram_size, &error_fatal); + memory_region_add_subregion(system_memory, memmap[SPIKE_DRAM].base, + main_mem); + + /* create device tree */ + create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline); + + /* boot rom */ + memory_region_init_rom(mask_rom, NULL, "riscv.spike.mrom", + memmap[SPIKE_MROM].size, &error_fatal); + memory_region_add_subregion(system_memory, memmap[SPIKE_MROM].base, + mask_rom); + + if (machine->kernel_filename) { + load_kernel(machine->kernel_filename); + } + + /* reset vector */ + uint32_t reset_vec[8] =3D { + 0x00000297, /* 1: auipc t0, %pcrel_hi(dtb) */ + 0x02028593, /* addi a1, t0, %pcrel_lo(1b) *= / + 0xf1402573, /* csrr a0, mhartid */ +#if defined(TARGET_RISCV32) + 0x0182a283, /* lw t0, 24(t0) */ +#elif defined(TARGET_RISCV64) + 0x0182b283, /* ld t0, 24(t0) */ +#endif + 0x00028067, /* jr t0 */ + 0x00000000, + memmap[SPIKE_DRAM].base, /* start: .dword DRAM_BASE */ + 0x00000000, + /* dtb: */ + }; + + /* copy in the reset vector in little_endian byte order */ + for (i =3D 0; i < sizeof(reset_vec) >> 2; i++) { + reset_vec[i] =3D cpu_to_le32(reset_vec[i]); + } + rom_add_blob_fixed_as("mrom.reset", reset_vec, sizeof(reset_vec), + memmap[SPIKE_MROM].base, &address_space_memory); + + /* copy in the device tree */ + if (fdt_pack(s->fdt) || fdt_totalsize(s->fdt) > + memmap[SPIKE_MROM].size - sizeof(reset_vec)) { + error_report("not enough space to store device-tree"); + exit(1); + } + qemu_fdt_dumpdtb(s->fdt, fdt_totalsize(s->fdt)); + rom_add_blob_fixed_as("mrom.fdt", s->fdt, fdt_totalsize(s->fdt), + memmap[SPIKE_MROM].base + sizeof(reset_vec), + &address_space_memory); + + /* initialize HTIF using symbols found in load_kernel */ + htif_mm_init(system_memory, mask_rom, &s->soc.harts[0].env, serial_hd(= 0)); + + /* Core Local Interruptor (timer and IPI) */ + sifive_clint_create(memmap[SPIKE_CLINT].base, memmap[SPIKE_CLINT].size= , + smp_cpus, SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE); +} =20 static void spike_v1_10_0_board_init(MachineState *machine) { @@ -172,6 +255,12 @@ static void spike_v1_10_0_board_init(MachineState *mac= hine) MemoryRegion *mask_rom =3D g_new(MemoryRegion, 1); int i; =20 + if (!qtest_enabled()) { + info_report("The Spike v1.10.0 machine has been depreceated. " + "Please use the deneric spike machine and specify the = ISA " + "versions using -cpu."); + } + /* Initialize SOC */ object_initialize_child(OBJECT(machine), "soc", &s->soc, sizeof(s->soc= ), TYPE_RISCV_HART_ARRAY, &error_abort, NULL); @@ -254,6 +343,12 @@ static void spike_v1_09_1_board_init(MachineState *mac= hine) MemoryRegion *mask_rom =3D g_new(MemoryRegion, 1); int i; =20 + if (!qtest_enabled()) { + info_report("The Spike v1.09.1 machine has been depreceated. " + "Please use the deneric spike machine and specify the = ISA " + "versions using -cpu."); + } + /* Initialize SOC */ object_initialize_child(OBJECT(machine), "soc", &s->soc, sizeof(s->soc= ), TYPE_RISCV_HART_ARRAY, &error_abort, NULL); @@ -359,8 +454,17 @@ static void spike_v1_10_0_machine_init(MachineClass *m= c) mc->desc =3D "RISC-V Spike Board (Privileged ISA v1.10)"; mc->init =3D spike_v1_10_0_board_init; mc->max_cpus =3D 1; +} + +static void spike_machine_init(MachineClass *mc) +{ + mc->desc =3D "RISC-V Spike Board"; + mc->init =3D spike_board_init; + mc->max_cpus =3D 1; mc->is_default =3D 1; + mc->default_cpu_type =3D SPIKE_V1_10_0_CPU; } =20 DEFINE_MACHINE("spike_v1.9.1", spike_v1_09_1_machine_init) DEFINE_MACHINE("spike_v1.10", spike_v1_10_0_machine_init) +DEFINE_MACHINE("spike", spike_machine_init) --=20 2.21.0