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qemu-e2k/hw/riscv/virt.c
Bin Meng 19800265d4 hw/riscv: virt: Map high mmio for PCIe 
Some peripherals require 64-bit PCI address, so let's map the high
mmio space for PCIe.

For RV32, the address is hardcoded to below 4 GiB from the highest
accessible physical address. For RV64, the base address depends on
top of RAM and is aligned to its size which is using 16 GiB for now.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210220144807.819-5-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-03-04 09:43:29 -05:00

770 lines
30 KiB
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/*
* QEMU RISC-V VirtIO Board
*
* Copyright (c) 2017 SiFive, Inc.
*
* RISC-V machine with 16550a UART and VirtIO MMIO
*
* 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 <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "qemu/units.h"
#include "qemu/log.h"
#include "qemu/error-report.h"
#include "qapi/error.h"
#include "hw/boards.h"
#include "hw/loader.h"
#include "hw/sysbus.h"
#include "hw/qdev-properties.h"
#include "hw/char/serial.h"
#include "target/riscv/cpu.h"
#include "hw/riscv/riscv_hart.h"
#include "hw/riscv/virt.h"
#include "hw/riscv/boot.h"
#include "hw/riscv/numa.h"
#include "hw/intc/sifive_clint.h"
#include "hw/intc/sifive_plic.h"
#include "hw/misc/sifive_test.h"
#include "chardev/char.h"
#include "sysemu/arch_init.h"
#include "sysemu/device_tree.h"
#include "sysemu/sysemu.h"
#include "hw/pci/pci.h"
#include "hw/pci-host/gpex.h"
static const MemMapEntry virt_memmap[] = {
[VIRT_DEBUG] = { 0x0, 0x100 },
[VIRT_MROM] = { 0x1000, 0xf000 },
[VIRT_TEST] = { 0x100000, 0x1000 },
[VIRT_RTC] = { 0x101000, 0x1000 },
[VIRT_CLINT] = { 0x2000000, 0x10000 },
[VIRT_PCIE_PIO] = { 0x3000000, 0x10000 },
[VIRT_PLIC] = { 0xc000000, VIRT_PLIC_SIZE(VIRT_CPUS_MAX * 2) },
[VIRT_UART0] = { 0x10000000, 0x100 },
[VIRT_VIRTIO] = { 0x10001000, 0x1000 },
[VIRT_FLASH] = { 0x20000000, 0x4000000 },
[VIRT_PCIE_ECAM] = { 0x30000000, 0x10000000 },
[VIRT_PCIE_MMIO] = { 0x40000000, 0x40000000 },
[VIRT_DRAM] = { 0x80000000, 0x0 },
};
/* PCIe high mmio is fixed for RV32 */
#define VIRT32_HIGH_PCIE_MMIO_BASE 0x300000000ULL
#define VIRT32_HIGH_PCIE_MMIO_SIZE (4 * GiB)
/* PCIe high mmio for RV64, size is fixed but base depends on top of RAM */
#define VIRT64_HIGH_PCIE_MMIO_SIZE (16 * GiB)
static MemMapEntry virt_high_pcie_memmap;
#define VIRT_FLASH_SECTOR_SIZE (256 * KiB)
static PFlashCFI01 *virt_flash_create1(RISCVVirtState *s,
const char *name,
const char *alias_prop_name)
{
/*
* Create a single flash device. We use the same parameters as
* the flash devices on the ARM virt board.
*/
DeviceState *dev = qdev_new(TYPE_PFLASH_CFI01);
qdev_prop_set_uint64(dev, "sector-length", VIRT_FLASH_SECTOR_SIZE);
qdev_prop_set_uint8(dev, "width", 4);
qdev_prop_set_uint8(dev, "device-width", 2);
qdev_prop_set_bit(dev, "big-endian", false);
qdev_prop_set_uint16(dev, "id0", 0x89);
qdev_prop_set_uint16(dev, "id1", 0x18);
qdev_prop_set_uint16(dev, "id2", 0x00);
qdev_prop_set_uint16(dev, "id3", 0x00);
qdev_prop_set_string(dev, "name", name);
object_property_add_child(OBJECT(s), name, OBJECT(dev));
object_property_add_alias(OBJECT(s), alias_prop_name,
OBJECT(dev), "drive");
return PFLASH_CFI01(dev);
}
static void virt_flash_create(RISCVVirtState *s)
{
s->flash[0] = virt_flash_create1(s, "virt.flash0", "pflash0");
s->flash[1] = virt_flash_create1(s, "virt.flash1", "pflash1");
}
static void virt_flash_map1(PFlashCFI01 *flash,
hwaddr base, hwaddr size,
MemoryRegion *sysmem)
{
DeviceState *dev = DEVICE(flash);
assert(QEMU_IS_ALIGNED(size, VIRT_FLASH_SECTOR_SIZE));
assert(size / VIRT_FLASH_SECTOR_SIZE <= UINT32_MAX);
qdev_prop_set_uint32(dev, "num-blocks", size / VIRT_FLASH_SECTOR_SIZE);
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
memory_region_add_subregion(sysmem, base,
sysbus_mmio_get_region(SYS_BUS_DEVICE(dev),
0));
}
static void virt_flash_map(RISCVVirtState *s,
MemoryRegion *sysmem)
{
hwaddr flashsize = virt_memmap[VIRT_FLASH].size / 2;
hwaddr flashbase = virt_memmap[VIRT_FLASH].base;
virt_flash_map1(s->flash[0], flashbase, flashsize,
sysmem);
virt_flash_map1(s->flash[1], flashbase + flashsize, flashsize,
sysmem);
}
static void create_pcie_irq_map(void *fdt, char *nodename,
uint32_t plic_phandle)
{
int pin, dev;
uint32_t
full_irq_map[GPEX_NUM_IRQS * GPEX_NUM_IRQS * FDT_INT_MAP_WIDTH] = {};
uint32_t *irq_map = full_irq_map;
/* This code creates a standard swizzle of interrupts such that
* each device's first interrupt is based on it's PCI_SLOT number.
* (See pci_swizzle_map_irq_fn())
*
* We only need one entry per interrupt in the table (not one per
* possible slot) seeing the interrupt-map-mask will allow the table
* to wrap to any number of devices.
*/
for (dev = 0; dev < GPEX_NUM_IRQS; dev++) {
int devfn = dev * 0x8;
for (pin = 0; pin < GPEX_NUM_IRQS; pin++) {
int irq_nr = PCIE_IRQ + ((pin + PCI_SLOT(devfn)) % GPEX_NUM_IRQS);
int i = 0;
irq_map[i] = cpu_to_be32(devfn << 8);
i += FDT_PCI_ADDR_CELLS;
irq_map[i] = cpu_to_be32(pin + 1);
i += FDT_PCI_INT_CELLS;
irq_map[i++] = cpu_to_be32(plic_phandle);
i += FDT_PLIC_ADDR_CELLS;
irq_map[i] = cpu_to_be32(irq_nr);
irq_map += FDT_INT_MAP_WIDTH;
}
}
qemu_fdt_setprop(fdt, nodename, "interrupt-map",
full_irq_map, sizeof(full_irq_map));
qemu_fdt_setprop_cells(fdt, nodename, "interrupt-map-mask",
0x1800, 0, 0, 0x7);
}
static void create_fdt(RISCVVirtState *s, const MemMapEntry *memmap,
uint64_t mem_size, const char *cmdline, bool is_32_bit)
{
void *fdt;
int i, cpu, socket;
MachineState *mc = MACHINE(s);
uint64_t addr, size;
uint32_t *clint_cells, *plic_cells;
unsigned long clint_addr, plic_addr;
uint32_t plic_phandle[MAX_NODES];
uint32_t cpu_phandle, intc_phandle, test_phandle;
uint32_t phandle = 1, plic_mmio_phandle = 1;
uint32_t plic_pcie_phandle = 1, plic_virtio_phandle = 1;
char *mem_name, *cpu_name, *core_name, *intc_name;
char *name, *clint_name, *plic_name, *clust_name;
hwaddr flashsize = virt_memmap[VIRT_FLASH].size / 2;
hwaddr flashbase = virt_memmap[VIRT_FLASH].base;
if (mc->dtb) {
fdt = s->fdt = load_device_tree(mc->dtb, &s->fdt_size);
if (!fdt) {
error_report("load_device_tree() failed");
exit(1);
}
goto update_bootargs;
} else {
fdt = s->fdt = create_device_tree(&s->fdt_size);
if (!fdt) {
error_report("create_device_tree() failed");
exit(1);
}
}
qemu_fdt_setprop_string(fdt, "/", "model", "riscv-virtio,qemu");
qemu_fdt_setprop_string(fdt, "/", "compatible", "riscv-virtio");
qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 0x2);
qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 0x2);
qemu_fdt_add_subnode(fdt, "/soc");
qemu_fdt_setprop(fdt, "/soc", "ranges", NULL, 0);
qemu_fdt_setprop_string(fdt, "/soc", "compatible", "simple-bus");
qemu_fdt_setprop_cell(fdt, "/soc", "#size-cells", 0x2);
qemu_fdt_setprop_cell(fdt, "/soc", "#address-cells", 0x2);
qemu_fdt_add_subnode(fdt, "/cpus");
qemu_fdt_setprop_cell(fdt, "/cpus", "timebase-frequency",
SIFIVE_CLINT_TIMEBASE_FREQ);
qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0x0);
qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 0x1);
qemu_fdt_add_subnode(fdt, "/cpus/cpu-map");
for (socket = (riscv_socket_count(mc) - 1); socket >= 0; socket--) {
clust_name = g_strdup_printf("/cpus/cpu-map/cluster%d", socket);
qemu_fdt_add_subnode(fdt, clust_name);
plic_cells = g_new0(uint32_t, s->soc[socket].num_harts * 4);
clint_cells = g_new0(uint32_t, s->soc[socket].num_harts * 4);
for (cpu = s->soc[socket].num_harts - 1; cpu >= 0; cpu--) {
cpu_phandle = phandle++;
cpu_name = g_strdup_printf("/cpus/cpu@%d",
s->soc[socket].hartid_base + cpu);
qemu_fdt_add_subnode(fdt, cpu_name);
if (is_32_bit) {
qemu_fdt_setprop_string(fdt, cpu_name, "mmu-type", "riscv,sv32");
} else {
qemu_fdt_setprop_string(fdt, cpu_name, "mmu-type", "riscv,sv48");
}
name = riscv_isa_string(&s->soc[socket].harts[cpu]);
qemu_fdt_setprop_string(fdt, cpu_name, "riscv,isa", name);
g_free(name);
qemu_fdt_setprop_string(fdt, cpu_name, "compatible", "riscv");
qemu_fdt_setprop_string(fdt, cpu_name, "status", "okay");
qemu_fdt_setprop_cell(fdt, cpu_name, "reg",
s->soc[socket].hartid_base + cpu);
qemu_fdt_setprop_string(fdt, cpu_name, "device_type", "cpu");
riscv_socket_fdt_write_id(mc, fdt, cpu_name, socket);
qemu_fdt_setprop_cell(fdt, cpu_name, "phandle", cpu_phandle);
intc_name = g_strdup_printf("%s/interrupt-controller", cpu_name);
qemu_fdt_add_subnode(fdt, intc_name);
intc_phandle = phandle++;
qemu_fdt_setprop_cell(fdt, intc_name, "phandle", intc_phandle);
qemu_fdt_setprop_string(fdt, intc_name, "compatible",
"riscv,cpu-intc");
qemu_fdt_setprop(fdt, intc_name, "interrupt-controller", NULL, 0);
qemu_fdt_setprop_cell(fdt, intc_name, "#interrupt-cells", 1);
clint_cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle);
clint_cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_SOFT);
clint_cells[cpu * 4 + 2] = cpu_to_be32(intc_phandle);
clint_cells[cpu * 4 + 3] = cpu_to_be32(IRQ_M_TIMER);
plic_cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle);
plic_cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_EXT);
plic_cells[cpu * 4 + 2] = cpu_to_be32(intc_phandle);
plic_cells[cpu * 4 + 3] = cpu_to_be32(IRQ_S_EXT);
core_name = g_strdup_printf("%s/core%d", clust_name, cpu);
qemu_fdt_add_subnode(fdt, core_name);
qemu_fdt_setprop_cell(fdt, core_name, "cpu", cpu_phandle);
g_free(core_name);
g_free(intc_name);
g_free(cpu_name);
}
addr = memmap[VIRT_DRAM].base + riscv_socket_mem_offset(mc, socket);
size = riscv_socket_mem_size(mc, socket);
mem_name = g_strdup_printf("/memory@%lx", (long)addr);
qemu_fdt_add_subnode(fdt, mem_name);
qemu_fdt_setprop_cells(fdt, mem_name, "reg",
addr >> 32, addr, size >> 32, size);
qemu_fdt_setprop_string(fdt, mem_name, "device_type", "memory");
riscv_socket_fdt_write_id(mc, fdt, mem_name, socket);
g_free(mem_name);
clint_addr = memmap[VIRT_CLINT].base +
(memmap[VIRT_CLINT].size * socket);
clint_name = g_strdup_printf("/soc/clint@%lx", clint_addr);
qemu_fdt_add_subnode(fdt, clint_name);
qemu_fdt_setprop_string(fdt, clint_name, "compatible", "riscv,clint0");
qemu_fdt_setprop_cells(fdt, clint_name, "reg",
0x0, clint_addr, 0x0, memmap[VIRT_CLINT].size);
qemu_fdt_setprop(fdt, clint_name, "interrupts-extended",
clint_cells, s->soc[socket].num_harts * sizeof(uint32_t) * 4);
riscv_socket_fdt_write_id(mc, fdt, clint_name, socket);
g_free(clint_name);
plic_phandle[socket] = phandle++;
plic_addr = memmap[VIRT_PLIC].base + (memmap[VIRT_PLIC].size * socket);
plic_name = g_strdup_printf("/soc/plic@%lx", plic_addr);
qemu_fdt_add_subnode(fdt, plic_name);
qemu_fdt_setprop_cell(fdt, plic_name,
"#address-cells", FDT_PLIC_ADDR_CELLS);
qemu_fdt_setprop_cell(fdt, plic_name,
"#interrupt-cells", FDT_PLIC_INT_CELLS);
qemu_fdt_setprop_string(fdt, plic_name, "compatible", "riscv,plic0");
qemu_fdt_setprop(fdt, plic_name, "interrupt-controller", NULL, 0);
qemu_fdt_setprop(fdt, plic_name, "interrupts-extended",
plic_cells, s->soc[socket].num_harts * sizeof(uint32_t) * 4);
qemu_fdt_setprop_cells(fdt, plic_name, "reg",
0x0, plic_addr, 0x0, memmap[VIRT_PLIC].size);
qemu_fdt_setprop_cell(fdt, plic_name, "riscv,ndev", VIRTIO_NDEV);
riscv_socket_fdt_write_id(mc, fdt, plic_name, socket);
qemu_fdt_setprop_cell(fdt, plic_name, "phandle", plic_phandle[socket]);
g_free(plic_name);
g_free(clint_cells);
g_free(plic_cells);
g_free(clust_name);
}
for (socket = 0; socket < riscv_socket_count(mc); socket++) {
if (socket == 0) {
plic_mmio_phandle = plic_phandle[socket];
plic_virtio_phandle = plic_phandle[socket];
plic_pcie_phandle = plic_phandle[socket];
}
if (socket == 1) {
plic_virtio_phandle = plic_phandle[socket];
plic_pcie_phandle = plic_phandle[socket];
}
if (socket == 2) {
plic_pcie_phandle = plic_phandle[socket];
}
}
riscv_socket_fdt_write_distance_matrix(mc, fdt);
for (i = 0; i < VIRTIO_COUNT; i++) {
name = g_strdup_printf("/soc/virtio_mmio@%lx",
(long)(memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size));
qemu_fdt_add_subnode(fdt, name);
qemu_fdt_setprop_string(fdt, name, "compatible", "virtio,mmio");
qemu_fdt_setprop_cells(fdt, name, "reg",
0x0, memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size,
0x0, memmap[VIRT_VIRTIO].size);
qemu_fdt_setprop_cell(fdt, name, "interrupt-parent",
plic_virtio_phandle);
qemu_fdt_setprop_cell(fdt, name, "interrupts", VIRTIO_IRQ + i);
g_free(name);
}
name = g_strdup_printf("/soc/pci@%lx",
(long) memmap[VIRT_PCIE_ECAM].base);
qemu_fdt_add_subnode(fdt, name);
qemu_fdt_setprop_cell(fdt, name, "#address-cells", FDT_PCI_ADDR_CELLS);
qemu_fdt_setprop_cell(fdt, name, "#interrupt-cells", FDT_PCI_INT_CELLS);
qemu_fdt_setprop_cell(fdt, name, "#size-cells", 0x2);
qemu_fdt_setprop_string(fdt, name, "compatible", "pci-host-ecam-generic");
qemu_fdt_setprop_string(fdt, name, "device_type", "pci");
qemu_fdt_setprop_cell(fdt, name, "linux,pci-domain", 0);
qemu_fdt_setprop_cells(fdt, name, "bus-range", 0,
memmap[VIRT_PCIE_ECAM].size / PCIE_MMCFG_SIZE_MIN - 1);
qemu_fdt_setprop(fdt, name, "dma-coherent", NULL, 0);
qemu_fdt_setprop_cells(fdt, name, "reg", 0,
memmap[VIRT_PCIE_ECAM].base, 0, memmap[VIRT_PCIE_ECAM].size);
qemu_fdt_setprop_sized_cells(fdt, name, "ranges",
1, FDT_PCI_RANGE_IOPORT, 2, 0,
2, memmap[VIRT_PCIE_PIO].base, 2, memmap[VIRT_PCIE_PIO].size,
1, FDT_PCI_RANGE_MMIO,
2, memmap[VIRT_PCIE_MMIO].base,
2, memmap[VIRT_PCIE_MMIO].base, 2, memmap[VIRT_PCIE_MMIO].size,
1, FDT_PCI_RANGE_MMIO_64BIT,
2, virt_high_pcie_memmap.base,
2, virt_high_pcie_memmap.base, 2, virt_high_pcie_memmap.size);
create_pcie_irq_map(fdt, name, plic_pcie_phandle);
g_free(name);
test_phandle = phandle++;
name = g_strdup_printf("/soc/test@%lx",
(long)memmap[VIRT_TEST].base);
qemu_fdt_add_subnode(fdt, name);
{
const char compat[] = "sifive,test1\0sifive,test0\0syscon";
qemu_fdt_setprop(fdt, name, "compatible", compat, sizeof(compat));
}
qemu_fdt_setprop_cells(fdt, name, "reg",
0x0, memmap[VIRT_TEST].base,
0x0, memmap[VIRT_TEST].size);
qemu_fdt_setprop_cell(fdt, name, "phandle", test_phandle);
test_phandle = qemu_fdt_get_phandle(fdt, name);
g_free(name);
name = g_strdup_printf("/soc/reboot");
qemu_fdt_add_subnode(fdt, name);
qemu_fdt_setprop_string(fdt, name, "compatible", "syscon-reboot");
qemu_fdt_setprop_cell(fdt, name, "regmap", test_phandle);
qemu_fdt_setprop_cell(fdt, name, "offset", 0x0);
qemu_fdt_setprop_cell(fdt, name, "value", FINISHER_RESET);
g_free(name);
name = g_strdup_printf("/soc/poweroff");
qemu_fdt_add_subnode(fdt, name);
qemu_fdt_setprop_string(fdt, name, "compatible", "syscon-poweroff");
qemu_fdt_setprop_cell(fdt, name, "regmap", test_phandle);
qemu_fdt_setprop_cell(fdt, name, "offset", 0x0);
qemu_fdt_setprop_cell(fdt, name, "value", FINISHER_PASS);
g_free(name);
name = g_strdup_printf("/soc/uart@%lx", (long)memmap[VIRT_UART0].base);
qemu_fdt_add_subnode(fdt, name);
qemu_fdt_setprop_string(fdt, name, "compatible", "ns16550a");
qemu_fdt_setprop_cells(fdt, name, "reg",
0x0, memmap[VIRT_UART0].base,
0x0, memmap[VIRT_UART0].size);
qemu_fdt_setprop_cell(fdt, name, "clock-frequency", 3686400);
qemu_fdt_setprop_cell(fdt, name, "interrupt-parent", plic_mmio_phandle);
qemu_fdt_setprop_cell(fdt, name, "interrupts", UART0_IRQ);
qemu_fdt_add_subnode(fdt, "/chosen");
qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", name);
g_free(name);
name = g_strdup_printf("/soc/rtc@%lx", (long)memmap[VIRT_RTC].base);
qemu_fdt_add_subnode(fdt, name);
qemu_fdt_setprop_string(fdt, name, "compatible", "google,goldfish-rtc");
qemu_fdt_setprop_cells(fdt, name, "reg",
0x0, memmap[VIRT_RTC].base,
0x0, memmap[VIRT_RTC].size);
qemu_fdt_setprop_cell(fdt, name, "interrupt-parent", plic_mmio_phandle);
qemu_fdt_setprop_cell(fdt, name, "interrupts", RTC_IRQ);
g_free(name);
name = g_strdup_printf("/soc/flash@%" PRIx64, flashbase);
qemu_fdt_add_subnode(s->fdt, name);
qemu_fdt_setprop_string(s->fdt, name, "compatible", "cfi-flash");
qemu_fdt_setprop_sized_cells(s->fdt, name, "reg",
2, flashbase, 2, flashsize,
2, flashbase + flashsize, 2, flashsize);
qemu_fdt_setprop_cell(s->fdt, name, "bank-width", 4);
g_free(name);
update_bootargs:
if (cmdline) {
qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
}
}
static inline DeviceState *gpex_pcie_init(MemoryRegion *sys_mem,
hwaddr ecam_base, hwaddr ecam_size,
hwaddr mmio_base, hwaddr mmio_size,
hwaddr high_mmio_base,
hwaddr high_mmio_size,
hwaddr pio_base,
DeviceState *plic)
{
DeviceState *dev;
MemoryRegion *ecam_alias, *ecam_reg;
MemoryRegion *mmio_alias, *high_mmio_alias, *mmio_reg;
qemu_irq irq;
int i;
dev = qdev_new(TYPE_GPEX_HOST);
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
ecam_alias = g_new0(MemoryRegion, 1);
ecam_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0);
memory_region_init_alias(ecam_alias, OBJECT(dev), "pcie-ecam",
ecam_reg, 0, ecam_size);
memory_region_add_subregion(get_system_memory(), ecam_base, ecam_alias);
mmio_alias = g_new0(MemoryRegion, 1);
mmio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1);
memory_region_init_alias(mmio_alias, OBJECT(dev), "pcie-mmio",
mmio_reg, mmio_base, mmio_size);
memory_region_add_subregion(get_system_memory(), mmio_base, mmio_alias);
/* Map high MMIO space */
high_mmio_alias = g_new0(MemoryRegion, 1);
memory_region_init_alias(high_mmio_alias, OBJECT(dev), "pcie-mmio-high",
mmio_reg, high_mmio_base, high_mmio_size);
memory_region_add_subregion(get_system_memory(), high_mmio_base,
high_mmio_alias);
sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, pio_base);
for (i = 0; i < GPEX_NUM_IRQS; i++) {
irq = qdev_get_gpio_in(plic, PCIE_IRQ + i);
sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, irq);
gpex_set_irq_num(GPEX_HOST(dev), i, PCIE_IRQ + i);
}
return dev;
}
static void virt_machine_init(MachineState *machine)
{
const MemMapEntry *memmap = virt_memmap;
RISCVVirtState *s = RISCV_VIRT_MACHINE(machine);
MemoryRegion *system_memory = get_system_memory();
MemoryRegion *main_mem = g_new(MemoryRegion, 1);
MemoryRegion *mask_rom = g_new(MemoryRegion, 1);
char *plic_hart_config, *soc_name;
size_t plic_hart_config_len;
target_ulong start_addr = memmap[VIRT_DRAM].base;
target_ulong firmware_end_addr, kernel_start_addr;
uint32_t fdt_load_addr;
uint64_t kernel_entry;
DeviceState *mmio_plic, *virtio_plic, *pcie_plic;
int i, j, base_hartid, hart_count;
/* Check socket count limit */
if (VIRT_SOCKETS_MAX < riscv_socket_count(machine)) {
error_report("number of sockets/nodes should be less than %d",
VIRT_SOCKETS_MAX);
exit(1);
}
/* Initialize sockets */
mmio_plic = virtio_plic = pcie_plic = NULL;
for (i = 0; i < riscv_socket_count(machine); i++) {
if (!riscv_socket_check_hartids(machine, i)) {
error_report("discontinuous hartids in socket%d", i);
exit(1);
}
base_hartid = riscv_socket_first_hartid(machine, i);
if (base_hartid < 0) {
error_report("can't find hartid base for socket%d", i);
exit(1);
}
hart_count = riscv_socket_hart_count(machine, i);
if (hart_count < 0) {
error_report("can't find hart count for socket%d", i);
exit(1);
}
soc_name = g_strdup_printf("soc%d", i);
object_initialize_child(OBJECT(machine), soc_name, &s->soc[i],
TYPE_RISCV_HART_ARRAY);
g_free(soc_name);
object_property_set_str(OBJECT(&s->soc[i]), "cpu-type",
machine->cpu_type, &error_abort);
object_property_set_int(OBJECT(&s->soc[i]), "hartid-base",
base_hartid, &error_abort);
object_property_set_int(OBJECT(&s->soc[i]), "num-harts",
hart_count, &error_abort);
sysbus_realize(SYS_BUS_DEVICE(&s->soc[i]), &error_abort);
/* Per-socket CLINT */
sifive_clint_create(
memmap[VIRT_CLINT].base + i * memmap[VIRT_CLINT].size,
memmap[VIRT_CLINT].size, base_hartid, hart_count,
SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE,
SIFIVE_CLINT_TIMEBASE_FREQ, true);
/* Per-socket PLIC hart topology configuration string */
plic_hart_config_len =
(strlen(VIRT_PLIC_HART_CONFIG) + 1) * hart_count;
plic_hart_config = g_malloc0(plic_hart_config_len);
for (j = 0; j < hart_count; j++) {
if (j != 0) {
strncat(plic_hart_config, ",", plic_hart_config_len);
}
strncat(plic_hart_config, VIRT_PLIC_HART_CONFIG,
plic_hart_config_len);
plic_hart_config_len -= (strlen(VIRT_PLIC_HART_CONFIG) + 1);
}
/* Per-socket PLIC */
s->plic[i] = sifive_plic_create(
memmap[VIRT_PLIC].base + i * memmap[VIRT_PLIC].size,
plic_hart_config, base_hartid,
VIRT_PLIC_NUM_SOURCES,
VIRT_PLIC_NUM_PRIORITIES,
VIRT_PLIC_PRIORITY_BASE,
VIRT_PLIC_PENDING_BASE,
VIRT_PLIC_ENABLE_BASE,
VIRT_PLIC_ENABLE_STRIDE,
VIRT_PLIC_CONTEXT_BASE,
VIRT_PLIC_CONTEXT_STRIDE,
memmap[VIRT_PLIC].size);
g_free(plic_hart_config);
/* Try to use different PLIC instance based device type */
if (i == 0) {
mmio_plic = s->plic[i];
virtio_plic = s->plic[i];
pcie_plic = s->plic[i];
}
if (i == 1) {
virtio_plic = s->plic[i];
pcie_plic = s->plic[i];
}
if (i == 2) {
pcie_plic = s->plic[i];
}
}
if (riscv_is_32bit(&s->soc[0])) {
#if HOST_LONG_BITS == 64
/* limit RAM size in a 32-bit system */
if (machine->ram_size > 10 * GiB) {
machine->ram_size = 10 * GiB;
error_report("Limiting RAM size to 10 GiB");
}
#endif
virt_high_pcie_memmap.base = VIRT32_HIGH_PCIE_MMIO_BASE;
virt_high_pcie_memmap.size = VIRT32_HIGH_PCIE_MMIO_SIZE;
} else {
virt_high_pcie_memmap.size = VIRT64_HIGH_PCIE_MMIO_SIZE;
virt_high_pcie_memmap.base = memmap[VIRT_DRAM].base + machine->ram_size;
virt_high_pcie_memmap.base =
ROUND_UP(virt_high_pcie_memmap.base, virt_high_pcie_memmap.size);
}
/* register system main memory (actual RAM) */
memory_region_init_ram(main_mem, NULL, "riscv_virt_board.ram",
machine->ram_size, &error_fatal);
memory_region_add_subregion(system_memory, memmap[VIRT_DRAM].base,
main_mem);
/* create device tree */
create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline,
riscv_is_32bit(&s->soc[0]));
/* boot rom */
memory_region_init_rom(mask_rom, NULL, "riscv_virt_board.mrom",
memmap[VIRT_MROM].size, &error_fatal);
memory_region_add_subregion(system_memory, memmap[VIRT_MROM].base,
mask_rom);
if (riscv_is_32bit(&s->soc[0])) {
firmware_end_addr = riscv_find_and_load_firmware(machine,
"opensbi-riscv32-generic-fw_dynamic.bin",
start_addr, NULL);
} else {
firmware_end_addr = riscv_find_and_load_firmware(machine,
"opensbi-riscv64-generic-fw_dynamic.bin",
start_addr, NULL);
}
if (machine->kernel_filename) {
kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc[0],
firmware_end_addr);
kernel_entry = riscv_load_kernel(machine->kernel_filename,
kernel_start_addr, NULL);
if (machine->initrd_filename) {
hwaddr start;
hwaddr end = riscv_load_initrd(machine->initrd_filename,
machine->ram_size, kernel_entry,
&start);
qemu_fdt_setprop_cell(s->fdt, "/chosen",
"linux,initrd-start", start);
qemu_fdt_setprop_cell(s->fdt, "/chosen", "linux,initrd-end",
end);
}
} else {
/*
* If dynamic firmware is used, it doesn't know where is the next mode
* if kernel argument is not set.
*/
kernel_entry = 0;
}
if (drive_get(IF_PFLASH, 0, 0)) {
/*
* Pflash was supplied, let's overwrite the address we jump to after
* reset to the base of the flash.
*/
start_addr = virt_memmap[VIRT_FLASH].base;
}
/* Compute the fdt load address in dram */
fdt_load_addr = riscv_load_fdt(memmap[VIRT_DRAM].base,
machine->ram_size, s->fdt);
/* load the reset vector */
riscv_setup_rom_reset_vec(machine, &s->soc[0], start_addr,
virt_memmap[VIRT_MROM].base,
virt_memmap[VIRT_MROM].size, kernel_entry,
fdt_load_addr, s->fdt);
/* SiFive Test MMIO device */
sifive_test_create(memmap[VIRT_TEST].base);
/* VirtIO MMIO devices */
for (i = 0; i < VIRTIO_COUNT; i++) {
sysbus_create_simple("virtio-mmio",
memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size,
qdev_get_gpio_in(DEVICE(virtio_plic), VIRTIO_IRQ + i));
}
gpex_pcie_init(system_memory,
memmap[VIRT_PCIE_ECAM].base,
memmap[VIRT_PCIE_ECAM].size,
memmap[VIRT_PCIE_MMIO].base,
memmap[VIRT_PCIE_MMIO].size,
virt_high_pcie_memmap.base,
virt_high_pcie_memmap.size,
memmap[VIRT_PCIE_PIO].base,
DEVICE(pcie_plic));
serial_mm_init(system_memory, memmap[VIRT_UART0].base,
0, qdev_get_gpio_in(DEVICE(mmio_plic), UART0_IRQ), 399193,
serial_hd(0), DEVICE_LITTLE_ENDIAN);
sysbus_create_simple("goldfish_rtc", memmap[VIRT_RTC].base,
qdev_get_gpio_in(DEVICE(mmio_plic), RTC_IRQ));
virt_flash_create(s);
for (i = 0; i < ARRAY_SIZE(s->flash); i++) {
/* Map legacy -drive if=pflash to machine properties */
pflash_cfi01_legacy_drive(s->flash[i],
drive_get(IF_PFLASH, 0, i));
}
virt_flash_map(s, system_memory);
}
static void virt_machine_instance_init(Object *obj)
{
}
static void virt_machine_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->desc = "RISC-V VirtIO board";
mc->init = virt_machine_init;
mc->max_cpus = VIRT_CPUS_MAX;
mc->default_cpu_type = TYPE_RISCV_CPU_BASE;
mc->pci_allow_0_address = true;
mc->possible_cpu_arch_ids = riscv_numa_possible_cpu_arch_ids;
mc->cpu_index_to_instance_props = riscv_numa_cpu_index_to_props;
mc->get_default_cpu_node_id = riscv_numa_get_default_cpu_node_id;
mc->numa_mem_supported = true;
}
static const TypeInfo virt_machine_typeinfo = {
.name = MACHINE_TYPE_NAME("virt"),
.parent = TYPE_MACHINE,
.class_init = virt_machine_class_init,
.instance_init = virt_machine_instance_init,
.instance_size = sizeof(RISCVVirtState),
};
static void virt_machine_init_register_types(void)
{
type_register_static(&virt_machine_typeinfo);
}
type_init(virt_machine_init_register_types)
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