From 56f6e31e7b7e06a66a0efd5464fa4257de7ec242 Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Tue, 1 Sep 2020 09:38:59 +0800 Subject: hw/riscv: Initial support for Microchip PolarFire SoC Icicle Kit board This is an initial support for Microchip PolarFire SoC Icicle Kit. The Icicle Kit board integrates a PolarFire SoC, with one SiFive's E51 plus four U54 cores and many on-chip peripherals and an FPGA. For more details about Microchip PolarFire Soc, please see: https://www.microsemi.com/product-directory/soc-fpgas/5498-polarfire-soc-fpga Unlike SiFive FU540, the RISC-V core resect vector is at 0x20220000. The following perepherals are created as an unimplemented device: - Bus Error Uint 0/1/2/3/4 - L2 cache controller - SYSREG - MPUCFG - IOSCBCFG More devices will be added later. The BIOS image used by this machine is hss.bin, aka Hart Software Services, which can be built from: https://github.com/polarfire-soc/hart-software-services To launch this machine: $ qemu-system-riscv64 -nographic -M microchip-icicle-kit The memory is set to 1 GiB by default to match the hardware. A sanity check on ram size is performed in the machine init routine to prompt user to increase the RAM size to > 1 GiB when less than 1 GiB ram is detected. Signed-off-by: Bin Meng Reviewed-by: Alistair Francis Message-Id: <1598924352-89526-5-git-send-email-bmeng.cn@gmail.com> Signed-off-by: Alistair Francis --- hw/riscv/Kconfig | 6 + hw/riscv/meson.build | 1 + hw/riscv/microchip_pfsoc.c | 312 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 319 insertions(+) create mode 100644 hw/riscv/microchip_pfsoc.c (limited to 'hw/riscv') diff --git a/hw/riscv/Kconfig b/hw/riscv/Kconfig index 28947ef..3292fae 100644 --- a/hw/riscv/Kconfig +++ b/hw/riscv/Kconfig @@ -48,3 +48,9 @@ config RISCV_VIRT select PCI_EXPRESS_GENERIC_BRIDGE select PFLASH_CFI01 select SIFIVE + +config MICROCHIP_PFSOC + bool + select HART + select SIFIVE + select UNIMP diff --git a/hw/riscv/meson.build b/hw/riscv/meson.build index fe2ea75..c29a48c 100644 --- a/hw/riscv/meson.build +++ b/hw/riscv/meson.build @@ -16,5 +16,6 @@ riscv_ss.add(when: 'CONFIG_SIFIVE_U', if_true: files('sifive_u_otp.c')) riscv_ss.add(when: 'CONFIG_SIFIVE_U', if_true: files('sifive_u_prci.c')) riscv_ss.add(when: 'CONFIG_SPIKE', if_true: files('riscv_htif.c')) riscv_ss.add(when: 'CONFIG_SPIKE', if_true: files('spike.c')) +riscv_ss.add(when: 'CONFIG_MICROCHIP_PFSOC', if_true: files('microchip_pfsoc.c')) hw_arch += {'riscv': riscv_ss} diff --git a/hw/riscv/microchip_pfsoc.c b/hw/riscv/microchip_pfsoc.c new file mode 100644 index 0000000..d946b2a --- /dev/null +++ b/hw/riscv/microchip_pfsoc.c @@ -0,0 +1,312 @@ +/* + * QEMU RISC-V Board Compatible with Microchip PolarFire SoC Icicle Kit + * + * Copyright (c) 2020 Wind River Systems, Inc. + * + * Author: + * Bin Meng + * + * Provides a board compatible with the Microchip PolarFire SoC Icicle Kit + * + * 0) CLINT (Core Level Interruptor) + * 1) PLIC (Platform Level Interrupt Controller) + * 2) eNVM (Embedded Non-Volatile Memory) + * + * This board currently generates devicetree dynamically that indicates at least + * two harts and up to five harts. + * + * 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 "qemu/error-report.h" +#include "qemu/log.h" +#include "qemu/units.h" +#include "qemu/cutils.h" +#include "qapi/error.h" +#include "hw/boards.h" +#include "hw/irq.h" +#include "hw/loader.h" +#include "hw/sysbus.h" +#include "hw/cpu/cluster.h" +#include "target/riscv/cpu.h" +#include "hw/misc/unimp.h" +#include "hw/riscv/boot.h" +#include "hw/riscv/riscv_hart.h" +#include "hw/riscv/sifive_clint.h" +#include "hw/riscv/sifive_plic.h" +#include "hw/riscv/microchip_pfsoc.h" + +/* + * The BIOS image used by this machine is called Hart Software Services (HSS). + * See https://github.com/polarfire-soc/hart-software-services + */ +#define BIOS_FILENAME "hss.bin" +#define RESET_VECTOR 0x20220000 + +static const struct MemmapEntry { + hwaddr base; + hwaddr size; +} microchip_pfsoc_memmap[] = { + [MICROCHIP_PFSOC_DEBUG] = { 0x0, 0x1000 }, + [MICROCHIP_PFSOC_E51_DTIM] = { 0x1000000, 0x2000 }, + [MICROCHIP_PFSOC_BUSERR_UNIT0] = { 0x1700000, 0x1000 }, + [MICROCHIP_PFSOC_BUSERR_UNIT1] = { 0x1701000, 0x1000 }, + [MICROCHIP_PFSOC_BUSERR_UNIT2] = { 0x1702000, 0x1000 }, + [MICROCHIP_PFSOC_BUSERR_UNIT3] = { 0x1703000, 0x1000 }, + [MICROCHIP_PFSOC_BUSERR_UNIT4] = { 0x1704000, 0x1000 }, + [MICROCHIP_PFSOC_CLINT] = { 0x2000000, 0x10000 }, + [MICROCHIP_PFSOC_L2CC] = { 0x2010000, 0x1000 }, + [MICROCHIP_PFSOC_L2LIM] = { 0x8000000, 0x2000000 }, + [MICROCHIP_PFSOC_PLIC] = { 0xc000000, 0x4000000 }, + [MICROCHIP_PFSOC_SYSREG] = { 0x20002000, 0x2000 }, + [MICROCHIP_PFSOC_MPUCFG] = { 0x20005000, 0x1000 }, + [MICROCHIP_PFSOC_ENVM_CFG] = { 0x20200000, 0x1000 }, + [MICROCHIP_PFSOC_ENVM_DATA] = { 0x20220000, 0x20000 }, + [MICROCHIP_PFSOC_IOSCB_CFG] = { 0x37080000, 0x1000 }, + [MICROCHIP_PFSOC_DRAM] = { 0x80000000, 0x0 }, +}; + +static void microchip_pfsoc_soc_instance_init(Object *obj) +{ + MachineState *ms = MACHINE(qdev_get_machine()); + MicrochipPFSoCState *s = MICROCHIP_PFSOC(obj); + + object_initialize_child(obj, "e-cluster", &s->e_cluster, TYPE_CPU_CLUSTER); + qdev_prop_set_uint32(DEVICE(&s->e_cluster), "cluster-id", 0); + + object_initialize_child(OBJECT(&s->e_cluster), "e-cpus", &s->e_cpus, + TYPE_RISCV_HART_ARRAY); + qdev_prop_set_uint32(DEVICE(&s->e_cpus), "num-harts", 1); + qdev_prop_set_uint32(DEVICE(&s->e_cpus), "hartid-base", 0); + qdev_prop_set_string(DEVICE(&s->e_cpus), "cpu-type", + TYPE_RISCV_CPU_SIFIVE_E51); + qdev_prop_set_uint64(DEVICE(&s->e_cpus), "resetvec", RESET_VECTOR); + + object_initialize_child(obj, "u-cluster", &s->u_cluster, TYPE_CPU_CLUSTER); + qdev_prop_set_uint32(DEVICE(&s->u_cluster), "cluster-id", 1); + + object_initialize_child(OBJECT(&s->u_cluster), "u-cpus", &s->u_cpus, + TYPE_RISCV_HART_ARRAY); + qdev_prop_set_uint32(DEVICE(&s->u_cpus), "num-harts", ms->smp.cpus - 1); + qdev_prop_set_uint32(DEVICE(&s->u_cpus), "hartid-base", 1); + qdev_prop_set_string(DEVICE(&s->u_cpus), "cpu-type", + TYPE_RISCV_CPU_SIFIVE_U54); + qdev_prop_set_uint64(DEVICE(&s->u_cpus), "resetvec", RESET_VECTOR); +} + +static void microchip_pfsoc_soc_realize(DeviceState *dev, Error **errp) +{ + MachineState *ms = MACHINE(qdev_get_machine()); + MicrochipPFSoCState *s = MICROCHIP_PFSOC(dev); + const struct MemmapEntry *memmap = microchip_pfsoc_memmap; + MemoryRegion *system_memory = get_system_memory(); + MemoryRegion *e51_dtim_mem = g_new(MemoryRegion, 1); + MemoryRegion *l2lim_mem = g_new(MemoryRegion, 1); + MemoryRegion *envm_data = g_new(MemoryRegion, 1); + char *plic_hart_config; + size_t plic_hart_config_len; + int i; + + sysbus_realize(SYS_BUS_DEVICE(&s->e_cpus), &error_abort); + sysbus_realize(SYS_BUS_DEVICE(&s->u_cpus), &error_abort); + /* + * The cluster must be realized after the RISC-V hart array container, + * as the container's CPU object is only created on realize, and the + * CPU must exist and have been parented into the cluster before the + * cluster is realized. + */ + qdev_realize(DEVICE(&s->e_cluster), NULL, &error_abort); + qdev_realize(DEVICE(&s->u_cluster), NULL, &error_abort); + + /* E51 DTIM */ + memory_region_init_ram(e51_dtim_mem, NULL, "microchip.pfsoc.e51_dtim_mem", + memmap[MICROCHIP_PFSOC_E51_DTIM].size, &error_fatal); + memory_region_add_subregion(system_memory, + memmap[MICROCHIP_PFSOC_E51_DTIM].base, + e51_dtim_mem); + + /* Bus Error Units */ + create_unimplemented_device("microchip.pfsoc.buserr_unit0_mem", + memmap[MICROCHIP_PFSOC_BUSERR_UNIT0].base, + memmap[MICROCHIP_PFSOC_BUSERR_UNIT0].size); + create_unimplemented_device("microchip.pfsoc.buserr_unit1_mem", + memmap[MICROCHIP_PFSOC_BUSERR_UNIT1].base, + memmap[MICROCHIP_PFSOC_BUSERR_UNIT1].size); + create_unimplemented_device("microchip.pfsoc.buserr_unit2_mem", + memmap[MICROCHIP_PFSOC_BUSERR_UNIT2].base, + memmap[MICROCHIP_PFSOC_BUSERR_UNIT2].size); + create_unimplemented_device("microchip.pfsoc.buserr_unit3_mem", + memmap[MICROCHIP_PFSOC_BUSERR_UNIT3].base, + memmap[MICROCHIP_PFSOC_BUSERR_UNIT3].size); + create_unimplemented_device("microchip.pfsoc.buserr_unit4_mem", + memmap[MICROCHIP_PFSOC_BUSERR_UNIT4].base, + memmap[MICROCHIP_PFSOC_BUSERR_UNIT4].size); + + /* CLINT */ + sifive_clint_create(memmap[MICROCHIP_PFSOC_CLINT].base, + memmap[MICROCHIP_PFSOC_CLINT].size, 0, ms->smp.cpus, + SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE, false); + + /* L2 cache controller */ + create_unimplemented_device("microchip.pfsoc.l2cc", + memmap[MICROCHIP_PFSOC_L2CC].base, memmap[MICROCHIP_PFSOC_L2CC].size); + + /* + * Add L2-LIM at reset size. + * This should be reduced in size as the L2 Cache Controller WayEnable + * register is incremented. Unfortunately I don't see a nice (or any) way + * to handle reducing or blocking out the L2 LIM while still allowing it + * be re returned to all enabled after a reset. For the time being, just + * leave it enabled all the time. This won't break anything, but will be + * too generous to misbehaving guests. + */ + memory_region_init_ram(l2lim_mem, NULL, "microchip.pfsoc.l2lim", + memmap[MICROCHIP_PFSOC_L2LIM].size, &error_fatal); + memory_region_add_subregion(system_memory, + memmap[MICROCHIP_PFSOC_L2LIM].base, + l2lim_mem); + + /* create PLIC hart topology configuration string */ + plic_hart_config_len = (strlen(MICROCHIP_PFSOC_PLIC_HART_CONFIG) + 1) * + ms->smp.cpus; + plic_hart_config = g_malloc0(plic_hart_config_len); + for (i = 0; i < ms->smp.cpus; i++) { + if (i != 0) { + strncat(plic_hart_config, "," MICROCHIP_PFSOC_PLIC_HART_CONFIG, + plic_hart_config_len); + } else { + strncat(plic_hart_config, "M", plic_hart_config_len); + } + plic_hart_config_len -= (strlen(MICROCHIP_PFSOC_PLIC_HART_CONFIG) + 1); + } + + /* PLIC */ + s->plic = sifive_plic_create(memmap[MICROCHIP_PFSOC_PLIC].base, + plic_hart_config, 0, + MICROCHIP_PFSOC_PLIC_NUM_SOURCES, + MICROCHIP_PFSOC_PLIC_NUM_PRIORITIES, + MICROCHIP_PFSOC_PLIC_PRIORITY_BASE, + MICROCHIP_PFSOC_PLIC_PENDING_BASE, + MICROCHIP_PFSOC_PLIC_ENABLE_BASE, + MICROCHIP_PFSOC_PLIC_ENABLE_STRIDE, + MICROCHIP_PFSOC_PLIC_CONTEXT_BASE, + MICROCHIP_PFSOC_PLIC_CONTEXT_STRIDE, + memmap[MICROCHIP_PFSOC_PLIC].size); + g_free(plic_hart_config); + + /* SYSREG */ + create_unimplemented_device("microchip.pfsoc.sysreg", + memmap[MICROCHIP_PFSOC_SYSREG].base, + memmap[MICROCHIP_PFSOC_SYSREG].size); + + /* MPUCFG */ + create_unimplemented_device("microchip.pfsoc.mpucfg", + memmap[MICROCHIP_PFSOC_MPUCFG].base, + memmap[MICROCHIP_PFSOC_MPUCFG].size); + + /* eNVM */ + memory_region_init_rom(envm_data, OBJECT(dev), "microchip.pfsoc.envm.data", + memmap[MICROCHIP_PFSOC_ENVM_DATA].size, + &error_fatal); + memory_region_add_subregion(system_memory, + memmap[MICROCHIP_PFSOC_ENVM_DATA].base, + envm_data); + + /* IOSCBCFG */ + create_unimplemented_device("microchip.pfsoc.ioscb.cfg", + memmap[MICROCHIP_PFSOC_IOSCB_CFG].base, + memmap[MICROCHIP_PFSOC_IOSCB_CFG].size); +} + +static void microchip_pfsoc_soc_class_init(ObjectClass *oc, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(oc); + + dc->realize = microchip_pfsoc_soc_realize; + /* Reason: Uses serial_hds in realize function, thus can't be used twice */ + dc->user_creatable = false; +} + +static const TypeInfo microchip_pfsoc_soc_type_info = { + .name = TYPE_MICROCHIP_PFSOC, + .parent = TYPE_DEVICE, + .instance_size = sizeof(MicrochipPFSoCState), + .instance_init = microchip_pfsoc_soc_instance_init, + .class_init = microchip_pfsoc_soc_class_init, +}; + +static void microchip_pfsoc_soc_register_types(void) +{ + type_register_static(µchip_pfsoc_soc_type_info); +} + +type_init(microchip_pfsoc_soc_register_types) + +static void microchip_icicle_kit_machine_init(MachineState *machine) +{ + MachineClass *mc = MACHINE_GET_CLASS(machine); + const struct MemmapEntry *memmap = microchip_pfsoc_memmap; + MicrochipIcicleKitState *s = MICROCHIP_ICICLE_KIT_MACHINE(machine); + MemoryRegion *system_memory = get_system_memory(); + MemoryRegion *main_mem = g_new(MemoryRegion, 1); + + /* Sanity check on RAM size */ + if (machine->ram_size < mc->default_ram_size) { + char *sz = size_to_str(mc->default_ram_size); + error_report("Invalid RAM size, should be bigger than %s", sz); + g_free(sz); + exit(EXIT_FAILURE); + } + + /* Initialize SoC */ + object_initialize_child(OBJECT(machine), "soc", &s->soc, + TYPE_MICROCHIP_PFSOC); + qdev_realize(DEVICE(&s->soc), NULL, &error_abort); + + /* Register RAM */ + memory_region_init_ram(main_mem, NULL, "microchip.icicle.kit.ram", + machine->ram_size, &error_fatal); + memory_region_add_subregion(system_memory, + memmap[MICROCHIP_PFSOC_DRAM].base, main_mem); + + /* Load the firmware */ + riscv_find_and_load_firmware(machine, BIOS_FILENAME, RESET_VECTOR, NULL); +} + +static void microchip_icicle_kit_machine_class_init(ObjectClass *oc, void *data) +{ + MachineClass *mc = MACHINE_CLASS(oc); + + mc->desc = "Microchip PolarFire SoC Icicle Kit"; + mc->init = microchip_icicle_kit_machine_init; + mc->max_cpus = MICROCHIP_PFSOC_MANAGEMENT_CPU_COUNT + + MICROCHIP_PFSOC_COMPUTE_CPU_COUNT; + mc->min_cpus = MICROCHIP_PFSOC_MANAGEMENT_CPU_COUNT + 1; + mc->default_cpus = mc->min_cpus; + mc->default_ram_size = 1 * GiB; +} + +static const TypeInfo microchip_icicle_kit_machine_typeinfo = { + .name = MACHINE_TYPE_NAME("microchip-icicle-kit"), + .parent = TYPE_MACHINE, + .class_init = microchip_icicle_kit_machine_class_init, + .instance_size = sizeof(MicrochipIcicleKitState), +}; + +static void microchip_icicle_kit_machine_init_register_types(void) +{ + type_register_static(µchip_icicle_kit_machine_typeinfo); +} + +type_init(microchip_icicle_kit_machine_init_register_types) -- cgit v1.1