1eb637edbSMichael Clark /* 2eb637edbSMichael Clark * QEMU RISC-V Board Compatible with SiFive Freedom E SDK 3eb637edbSMichael Clark * 4eb637edbSMichael Clark * Copyright (c) 2017 SiFive, Inc. 5eb637edbSMichael Clark * 6eb637edbSMichael Clark * Provides a board compatible with the SiFive Freedom E SDK: 7eb637edbSMichael Clark * 8eb637edbSMichael Clark * 0) UART 9eb637edbSMichael Clark * 1) CLINT (Core Level Interruptor) 10eb637edbSMichael Clark * 2) PLIC (Platform Level Interrupt Controller) 11eb637edbSMichael Clark * 3) PRCI (Power, Reset, Clock, Interrupt) 12eb637edbSMichael Clark * 4) Registers emulated as RAM: AON, GPIO, QSPI, PWM 13eb637edbSMichael Clark * 5) Flash memory emulated as RAM 14eb637edbSMichael Clark * 15eb637edbSMichael Clark * The Mask ROM reset vector jumps to the flash payload at 0x2040_0000. 16eb637edbSMichael Clark * The OTP ROM and Flash boot code will be emulated in a future version. 17eb637edbSMichael Clark * 18eb637edbSMichael Clark * This program is free software; you can redistribute it and/or modify it 19eb637edbSMichael Clark * under the terms and conditions of the GNU General Public License, 20eb637edbSMichael Clark * version 2 or later, as published by the Free Software Foundation. 21eb637edbSMichael Clark * 22eb637edbSMichael Clark * This program is distributed in the hope it will be useful, but WITHOUT 23eb637edbSMichael Clark * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 24eb637edbSMichael Clark * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 25eb637edbSMichael Clark * more details. 26eb637edbSMichael Clark * 27eb637edbSMichael Clark * You should have received a copy of the GNU General Public License along with 28eb637edbSMichael Clark * this program. If not, see <http://www.gnu.org/licenses/>. 29eb637edbSMichael Clark */ 30eb637edbSMichael Clark 31eb637edbSMichael Clark #include "qemu/osdep.h" 32eb637edbSMichael Clark #include "qemu/log.h" 33eb637edbSMichael Clark #include "qemu/error-report.h" 34eb637edbSMichael Clark #include "qapi/error.h" 35eb637edbSMichael Clark #include "hw/hw.h" 36eb637edbSMichael Clark #include "hw/boards.h" 37eb637edbSMichael Clark #include "hw/loader.h" 38eb637edbSMichael Clark #include "hw/sysbus.h" 39eb637edbSMichael Clark #include "hw/char/serial.h" 40eb637edbSMichael Clark #include "target/riscv/cpu.h" 41eb637edbSMichael Clark #include "hw/riscv/riscv_hart.h" 42eb637edbSMichael Clark #include "hw/riscv/sifive_plic.h" 43eb637edbSMichael Clark #include "hw/riscv/sifive_clint.h" 44eb637edbSMichael Clark #include "hw/riscv/sifive_prci.h" 45eb637edbSMichael Clark #include "hw/riscv/sifive_uart.h" 46eb637edbSMichael Clark #include "hw/riscv/sifive_e.h" 47eb637edbSMichael Clark #include "chardev/char.h" 48eb637edbSMichael Clark #include "sysemu/arch_init.h" 49eb637edbSMichael Clark #include "exec/address-spaces.h" 50eb637edbSMichael Clark #include "elf.h" 51eb637edbSMichael Clark 52eb637edbSMichael Clark static const struct MemmapEntry { 53eb637edbSMichael Clark hwaddr base; 54eb637edbSMichael Clark hwaddr size; 55eb637edbSMichael Clark } sifive_e_memmap[] = { 56eb637edbSMichael Clark [SIFIVE_E_DEBUG] = { 0x0, 0x100 }, 57eb637edbSMichael Clark [SIFIVE_E_MROM] = { 0x1000, 0x2000 }, 58eb637edbSMichael Clark [SIFIVE_E_OTP] = { 0x20000, 0x2000 }, 59eb637edbSMichael Clark [SIFIVE_E_CLINT] = { 0x2000000, 0x10000 }, 60eb637edbSMichael Clark [SIFIVE_E_PLIC] = { 0xc000000, 0x4000000 }, 61eb637edbSMichael Clark [SIFIVE_E_AON] = { 0x10000000, 0x8000 }, 62eb637edbSMichael Clark [SIFIVE_E_PRCI] = { 0x10008000, 0x8000 }, 63eb637edbSMichael Clark [SIFIVE_E_OTP_CTRL] = { 0x10010000, 0x1000 }, 64eb637edbSMichael Clark [SIFIVE_E_GPIO0] = { 0x10012000, 0x1000 }, 65eb637edbSMichael Clark [SIFIVE_E_UART0] = { 0x10013000, 0x1000 }, 66eb637edbSMichael Clark [SIFIVE_E_QSPI0] = { 0x10014000, 0x1000 }, 67eb637edbSMichael Clark [SIFIVE_E_PWM0] = { 0x10015000, 0x1000 }, 68eb637edbSMichael Clark [SIFIVE_E_UART1] = { 0x10023000, 0x1000 }, 69eb637edbSMichael Clark [SIFIVE_E_QSPI1] = { 0x10024000, 0x1000 }, 70eb637edbSMichael Clark [SIFIVE_E_PWM1] = { 0x10025000, 0x1000 }, 71eb637edbSMichael Clark [SIFIVE_E_QSPI2] = { 0x10034000, 0x1000 }, 72eb637edbSMichael Clark [SIFIVE_E_PWM2] = { 0x10035000, 0x1000 }, 73eb637edbSMichael Clark [SIFIVE_E_XIP] = { 0x20000000, 0x20000000 }, 74eb637edbSMichael Clark [SIFIVE_E_DTIM] = { 0x80000000, 0x4000 } 75eb637edbSMichael Clark }; 76eb637edbSMichael Clark 77eb637edbSMichael Clark static uint64_t load_kernel(const char *kernel_filename) 78eb637edbSMichael Clark { 79eb637edbSMichael Clark uint64_t kernel_entry, kernel_high; 80eb637edbSMichael Clark 81b7938980SMichael Clark if (load_elf(kernel_filename, NULL, NULL, 82eb637edbSMichael Clark &kernel_entry, NULL, &kernel_high, 8389854803SMichael Clark 0, EM_RISCV, 1, 0) < 0) { 84eb637edbSMichael Clark error_report("qemu: could not load kernel '%s'", kernel_filename); 85eb637edbSMichael Clark exit(1); 86eb637edbSMichael Clark } 87eb637edbSMichael Clark return kernel_entry; 88eb637edbSMichael Clark } 89eb637edbSMichael Clark 90eb637edbSMichael Clark static void sifive_mmio_emulate(MemoryRegion *parent, const char *name, 91eb637edbSMichael Clark uintptr_t offset, uintptr_t length) 92eb637edbSMichael Clark { 93eb637edbSMichael Clark MemoryRegion *mock_mmio = g_new(MemoryRegion, 1); 94eb637edbSMichael Clark memory_region_init_ram(mock_mmio, NULL, name, length, &error_fatal); 95eb637edbSMichael Clark memory_region_add_subregion(parent, offset, mock_mmio); 96eb637edbSMichael Clark } 97eb637edbSMichael Clark 98eb637edbSMichael Clark static void riscv_sifive_e_init(MachineState *machine) 99eb637edbSMichael Clark { 100eb637edbSMichael Clark const struct MemmapEntry *memmap = sifive_e_memmap; 101eb637edbSMichael Clark 102eb637edbSMichael Clark SiFiveEState *s = g_new0(SiFiveEState, 1); 103eb637edbSMichael Clark MemoryRegion *sys_mem = get_system_memory(); 104eb637edbSMichael Clark MemoryRegion *main_mem = g_new(MemoryRegion, 1); 105eb637edbSMichael Clark MemoryRegion *mask_rom = g_new(MemoryRegion, 1); 106eb637edbSMichael Clark MemoryRegion *xip_mem = g_new(MemoryRegion, 1); 107*5aec3247SMichael Clark int i; 108eb637edbSMichael Clark 109eb637edbSMichael Clark /* Initialize SOC */ 110eb637edbSMichael Clark object_initialize(&s->soc, sizeof(s->soc), TYPE_RISCV_HART_ARRAY); 111eb637edbSMichael Clark object_property_add_child(OBJECT(machine), "soc", OBJECT(&s->soc), 112eb637edbSMichael Clark &error_abort); 113eb637edbSMichael Clark object_property_set_str(OBJECT(&s->soc), SIFIVE_E_CPU, "cpu-type", 114eb637edbSMichael Clark &error_abort); 115eb637edbSMichael Clark object_property_set_int(OBJECT(&s->soc), smp_cpus, "num-harts", 116eb637edbSMichael Clark &error_abort); 117eb637edbSMichael Clark object_property_set_bool(OBJECT(&s->soc), true, "realized", 118eb637edbSMichael Clark &error_abort); 119eb637edbSMichael Clark 120eb637edbSMichael Clark /* Data Tightly Integrated Memory */ 121eb637edbSMichael Clark memory_region_init_ram(main_mem, NULL, "riscv.sifive.e.ram", 122eb637edbSMichael Clark memmap[SIFIVE_E_DTIM].size, &error_fatal); 123eb637edbSMichael Clark memory_region_add_subregion(sys_mem, 124eb637edbSMichael Clark memmap[SIFIVE_E_DTIM].base, main_mem); 125eb637edbSMichael Clark 126eb637edbSMichael Clark /* Mask ROM */ 127*5aec3247SMichael Clark memory_region_init_rom(mask_rom, NULL, "riscv.sifive.e.mrom", 128eb637edbSMichael Clark memmap[SIFIVE_E_MROM].size, &error_fatal); 129eb637edbSMichael Clark memory_region_add_subregion(sys_mem, 130eb637edbSMichael Clark memmap[SIFIVE_E_MROM].base, mask_rom); 131eb637edbSMichael Clark 132eb637edbSMichael Clark /* MMIO */ 133eb637edbSMichael Clark s->plic = sifive_plic_create(memmap[SIFIVE_E_PLIC].base, 134eb637edbSMichael Clark (char *)SIFIVE_E_PLIC_HART_CONFIG, 135eb637edbSMichael Clark SIFIVE_E_PLIC_NUM_SOURCES, 136eb637edbSMichael Clark SIFIVE_E_PLIC_NUM_PRIORITIES, 137eb637edbSMichael Clark SIFIVE_E_PLIC_PRIORITY_BASE, 138eb637edbSMichael Clark SIFIVE_E_PLIC_PENDING_BASE, 139eb637edbSMichael Clark SIFIVE_E_PLIC_ENABLE_BASE, 140eb637edbSMichael Clark SIFIVE_E_PLIC_ENABLE_STRIDE, 141eb637edbSMichael Clark SIFIVE_E_PLIC_CONTEXT_BASE, 142eb637edbSMichael Clark SIFIVE_E_PLIC_CONTEXT_STRIDE, 143eb637edbSMichael Clark memmap[SIFIVE_E_PLIC].size); 144eb637edbSMichael Clark sifive_clint_create(memmap[SIFIVE_E_CLINT].base, 145eb637edbSMichael Clark memmap[SIFIVE_E_CLINT].size, smp_cpus, 146eb637edbSMichael Clark SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE); 147eb637edbSMichael Clark sifive_mmio_emulate(sys_mem, "riscv.sifive.e.aon", 148eb637edbSMichael Clark memmap[SIFIVE_E_AON].base, memmap[SIFIVE_E_AON].size); 149eb637edbSMichael Clark sifive_prci_create(memmap[SIFIVE_E_PRCI].base); 150eb637edbSMichael Clark sifive_mmio_emulate(sys_mem, "riscv.sifive.e.gpio0", 151eb637edbSMichael Clark memmap[SIFIVE_E_GPIO0].base, memmap[SIFIVE_E_GPIO0].size); 152eb637edbSMichael Clark sifive_uart_create(sys_mem, memmap[SIFIVE_E_UART0].base, 1539bca0edbSPeter Maydell serial_hd(0), SIFIVE_PLIC(s->plic)->irqs[SIFIVE_E_UART0_IRQ]); 154eb637edbSMichael Clark sifive_mmio_emulate(sys_mem, "riscv.sifive.e.qspi0", 155eb637edbSMichael Clark memmap[SIFIVE_E_QSPI0].base, memmap[SIFIVE_E_QSPI0].size); 156eb637edbSMichael Clark sifive_mmio_emulate(sys_mem, "riscv.sifive.e.pwm0", 157eb637edbSMichael Clark memmap[SIFIVE_E_PWM0].base, memmap[SIFIVE_E_PWM0].size); 158eb637edbSMichael Clark /* sifive_uart_create(sys_mem, memmap[SIFIVE_E_UART1].base, 1599bca0edbSPeter Maydell serial_hd(1), SIFIVE_PLIC(s->plic)->irqs[SIFIVE_E_UART1_IRQ]); */ 160eb637edbSMichael Clark sifive_mmio_emulate(sys_mem, "riscv.sifive.e.qspi1", 161eb637edbSMichael Clark memmap[SIFIVE_E_QSPI1].base, memmap[SIFIVE_E_QSPI1].size); 162eb637edbSMichael Clark sifive_mmio_emulate(sys_mem, "riscv.sifive.e.pwm1", 163eb637edbSMichael Clark memmap[SIFIVE_E_PWM1].base, memmap[SIFIVE_E_PWM1].size); 164eb637edbSMichael Clark sifive_mmio_emulate(sys_mem, "riscv.sifive.e.qspi2", 165eb637edbSMichael Clark memmap[SIFIVE_E_QSPI2].base, memmap[SIFIVE_E_QSPI2].size); 166eb637edbSMichael Clark sifive_mmio_emulate(sys_mem, "riscv.sifive.e.pwm2", 167eb637edbSMichael Clark memmap[SIFIVE_E_PWM2].base, memmap[SIFIVE_E_PWM2].size); 168eb637edbSMichael Clark 169eb637edbSMichael Clark /* Flash memory */ 170eb637edbSMichael Clark memory_region_init_ram(xip_mem, NULL, "riscv.sifive.e.xip", 171eb637edbSMichael Clark memmap[SIFIVE_E_XIP].size, &error_fatal); 172eb637edbSMichael Clark memory_region_set_readonly(xip_mem, true); 173eb637edbSMichael Clark memory_region_add_subregion(sys_mem, memmap[SIFIVE_E_XIP].base, xip_mem); 174eb637edbSMichael Clark 175eb637edbSMichael Clark /* Mask ROM reset vector */ 176eb637edbSMichael Clark uint32_t reset_vec[2] = { 177eb637edbSMichael Clark 0x204002b7, /* 0x1000: lui t0,0x20400 */ 178eb637edbSMichael Clark 0x00028067, /* 0x1004: jr t0 */ 179eb637edbSMichael Clark }; 180eb637edbSMichael Clark 181*5aec3247SMichael Clark /* copy in the reset vector in little_endian byte order */ 182*5aec3247SMichael Clark for (i = 0; i < sizeof(reset_vec) >> 2; i++) { 183*5aec3247SMichael Clark reset_vec[i] = cpu_to_le32(reset_vec[i]); 184*5aec3247SMichael Clark } 185*5aec3247SMichael Clark rom_add_blob_fixed_as("mrom.reset", reset_vec, sizeof(reset_vec), 186*5aec3247SMichael Clark memmap[SIFIVE_E_MROM].base, &address_space_memory); 187eb637edbSMichael Clark 188eb637edbSMichael Clark if (machine->kernel_filename) { 189eb637edbSMichael Clark load_kernel(machine->kernel_filename); 190eb637edbSMichael Clark } 191eb637edbSMichael Clark } 192eb637edbSMichael Clark 193eb637edbSMichael Clark static void riscv_sifive_e_machine_init(MachineClass *mc) 194eb637edbSMichael Clark { 195eb637edbSMichael Clark mc->desc = "RISC-V Board compatible with SiFive E SDK"; 196eb637edbSMichael Clark mc->init = riscv_sifive_e_init; 197eb637edbSMichael Clark mc->max_cpus = 1; 198eb637edbSMichael Clark } 199eb637edbSMichael Clark 200eb637edbSMichael Clark DEFINE_MACHINE("sifive_e", riscv_sifive_e_machine_init) 201