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d207863cd3
qemu/hw/riscv/virt.c
Anup Patel d207863cd3 hw/riscv: virt: Use AIA INTC compatible string when available 
We should use the AIA INTC compatible string in the CPU INTC
DT nodes when the CPUs support AIA feature. This will allow
Linux INTC driver to use AIA local interrupt CSRs.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Frank Chang <frank.chang@sifive.com>
Message-id: 20220204174700.534953-17-anup@brainfault.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-02-16 12:24:19 +10:00

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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/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/riscv_aclint.h"
#include "hw/intc/sifive_plic.h"
#include "hw/misc/sifive_test.h"
#include "chardev/char.h"
#include "sysemu/device_tree.h"
#include "sysemu/sysemu.h"
#include "sysemu/kvm.h"
#include "hw/pci/pci.h"
#include "hw/pci-host/gpex.h"
#include "hw/display/ramfb.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_ACLINT_SSWI] = { 0x2F00000, 0x4000 },
[VIRT_PCIE_PIO] = { 0x3000000, 0x10000 },
[VIRT_PLIC] = { 0xc000000, VIRT_PLIC_SIZE(VIRT_CPUS_MAX * 2) },
[VIRT_UART0] = { 0x10000000, 0x100 },
[VIRT_VIRTIO] = { 0x10001000, 0x1000 },
[VIRT_FW_CFG] = { 0x10100000, 0x18 },
[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_socket_cpus(RISCVVirtState *s, int socket,
char *clust_name, uint32_t *phandle,
bool is_32_bit, uint32_t *intc_phandles)
{
int cpu;
uint32_t cpu_phandle;
MachineState *mc = MACHINE(s);
char *name, *cpu_name, *core_name, *intc_name;
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(mc->fdt, cpu_name);
qemu_fdt_setprop_string(mc->fdt, cpu_name, "mmu-type",
(is_32_bit) ? "riscv,sv32" : "riscv,sv48");
name = riscv_isa_string(&s->soc[socket].harts[cpu]);
qemu_fdt_setprop_string(mc->fdt, cpu_name, "riscv,isa", name);
g_free(name);
qemu_fdt_setprop_string(mc->fdt, cpu_name, "compatible", "riscv");
qemu_fdt_setprop_string(mc->fdt, cpu_name, "status", "okay");
qemu_fdt_setprop_cell(mc->fdt, cpu_name, "reg",
s->soc[socket].hartid_base + cpu);
qemu_fdt_setprop_string(mc->fdt, cpu_name, "device_type", "cpu");
riscv_socket_fdt_write_id(mc, mc->fdt, cpu_name, socket);
qemu_fdt_setprop_cell(mc->fdt, cpu_name, "phandle", cpu_phandle);
intc_phandles[cpu] = (*phandle)++;
intc_name = g_strdup_printf("%s/interrupt-controller", cpu_name);
qemu_fdt_add_subnode(mc->fdt, intc_name);
qemu_fdt_setprop_cell(mc->fdt, intc_name, "phandle",
intc_phandles[cpu]);
if (riscv_feature(&s->soc[socket].harts[cpu].env,
RISCV_FEATURE_AIA)) {
static const char * const compat[2] = {
"riscv,cpu-intc-aia", "riscv,cpu-intc"
};
qemu_fdt_setprop_string_array(mc->fdt, intc_name, "compatible",
(char **)&compat, ARRAY_SIZE(compat));
} else {
qemu_fdt_setprop_string(mc->fdt, intc_name, "compatible",
"riscv,cpu-intc");
}
qemu_fdt_setprop(mc->fdt, intc_name, "interrupt-controller", NULL, 0);
qemu_fdt_setprop_cell(mc->fdt, intc_name, "#interrupt-cells", 1);
core_name = g_strdup_printf("%s/core%d", clust_name, cpu);
qemu_fdt_add_subnode(mc->fdt, core_name);
qemu_fdt_setprop_cell(mc->fdt, core_name, "cpu", cpu_phandle);
g_free(core_name);
g_free(intc_name);
g_free(cpu_name);
}
}
static void create_fdt_socket_memory(RISCVVirtState *s,
const MemMapEntry *memmap, int socket)
{
char *mem_name;
uint64_t addr, size;
MachineState *mc = MACHINE(s);
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(mc->fdt, mem_name);
qemu_fdt_setprop_cells(mc->fdt, mem_name, "reg",
addr >> 32, addr, size >> 32, size);
qemu_fdt_setprop_string(mc->fdt, mem_name, "device_type", "memory");
riscv_socket_fdt_write_id(mc, mc->fdt, mem_name, socket);
g_free(mem_name);
}
static void create_fdt_socket_clint(RISCVVirtState *s,
const MemMapEntry *memmap, int socket,
uint32_t *intc_phandles)
{
int cpu;
char *clint_name;
uint32_t *clint_cells;
unsigned long clint_addr;
MachineState *mc = MACHINE(s);
static const char * const clint_compat[2] = {
"sifive,clint0", "riscv,clint0"
};
clint_cells = g_new0(uint32_t, s->soc[socket].num_harts * 4);
for (cpu = 0; cpu < s->soc[socket].num_harts; cpu++) {
clint_cells[cpu * 4 + 0] = cpu_to_be32(intc_phandles[cpu]);
clint_cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_SOFT);
clint_cells[cpu * 4 + 2] = cpu_to_be32(intc_phandles[cpu]);
clint_cells[cpu * 4 + 3] = cpu_to_be32(IRQ_M_TIMER);
}
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(mc->fdt, clint_name);
qemu_fdt_setprop_string_array(mc->fdt, clint_name, "compatible",
(char **)&clint_compat,
ARRAY_SIZE(clint_compat));
qemu_fdt_setprop_cells(mc->fdt, clint_name, "reg",
0x0, clint_addr, 0x0, memmap[VIRT_CLINT].size);
qemu_fdt_setprop(mc->fdt, clint_name, "interrupts-extended",
clint_cells, s->soc[socket].num_harts * sizeof(uint32_t) * 4);
riscv_socket_fdt_write_id(mc, mc->fdt, clint_name, socket);
g_free(clint_name);
g_free(clint_cells);
}
static void create_fdt_socket_aclint(RISCVVirtState *s,
const MemMapEntry *memmap, int socket,
uint32_t *intc_phandles)
{
int cpu;
char *name;
unsigned long addr;
uint32_t aclint_cells_size;
uint32_t *aclint_mswi_cells;
uint32_t *aclint_sswi_cells;
uint32_t *aclint_mtimer_cells;
MachineState *mc = MACHINE(s);
aclint_mswi_cells = g_new0(uint32_t, s->soc[socket].num_harts * 2);
aclint_mtimer_cells = g_new0(uint32_t, s->soc[socket].num_harts * 2);
aclint_sswi_cells = g_new0(uint32_t, s->soc[socket].num_harts * 2);
for (cpu = 0; cpu < s->soc[socket].num_harts; cpu++) {
aclint_mswi_cells[cpu * 2 + 0] = cpu_to_be32(intc_phandles[cpu]);
aclint_mswi_cells[cpu * 2 + 1] = cpu_to_be32(IRQ_M_SOFT);
aclint_mtimer_cells[cpu * 2 + 0] = cpu_to_be32(intc_phandles[cpu]);
aclint_mtimer_cells[cpu * 2 + 1] = cpu_to_be32(IRQ_M_TIMER);
aclint_sswi_cells[cpu * 2 + 0] = cpu_to_be32(intc_phandles[cpu]);
aclint_sswi_cells[cpu * 2 + 1] = cpu_to_be32(IRQ_S_SOFT);
}
aclint_cells_size = s->soc[socket].num_harts * sizeof(uint32_t) * 2;
addr = memmap[VIRT_CLINT].base + (memmap[VIRT_CLINT].size * socket);
name = g_strdup_printf("/soc/mswi@%lx", addr);
qemu_fdt_add_subnode(mc->fdt, name);
qemu_fdt_setprop_string(mc->fdt, name, "compatible", "riscv,aclint-mswi");
qemu_fdt_setprop_cells(mc->fdt, name, "reg",
0x0, addr, 0x0, RISCV_ACLINT_SWI_SIZE);
qemu_fdt_setprop(mc->fdt, name, "interrupts-extended",
aclint_mswi_cells, aclint_cells_size);
qemu_fdt_setprop(mc->fdt, name, "interrupt-controller", NULL, 0);
qemu_fdt_setprop_cell(mc->fdt, name, "#interrupt-cells", 0);
riscv_socket_fdt_write_id(mc, mc->fdt, name, socket);
g_free(name);
addr = memmap[VIRT_CLINT].base + RISCV_ACLINT_SWI_SIZE +
(memmap[VIRT_CLINT].size * socket);
name = g_strdup_printf("/soc/mtimer@%lx", addr);
qemu_fdt_add_subnode(mc->fdt, name);
qemu_fdt_setprop_string(mc->fdt, name, "compatible",
"riscv,aclint-mtimer");
qemu_fdt_setprop_cells(mc->fdt, name, "reg",
0x0, addr + RISCV_ACLINT_DEFAULT_MTIME,
0x0, memmap[VIRT_CLINT].size - RISCV_ACLINT_SWI_SIZE -
RISCV_ACLINT_DEFAULT_MTIME,
0x0, addr + RISCV_ACLINT_DEFAULT_MTIMECMP,
0x0, RISCV_ACLINT_DEFAULT_MTIME);
qemu_fdt_setprop(mc->fdt, name, "interrupts-extended",
aclint_mtimer_cells, aclint_cells_size);
riscv_socket_fdt_write_id(mc, mc->fdt, name, socket);
g_free(name);
addr = memmap[VIRT_ACLINT_SSWI].base +
(memmap[VIRT_ACLINT_SSWI].size * socket);
name = g_strdup_printf("/soc/sswi@%lx", addr);
qemu_fdt_add_subnode(mc->fdt, name);
qemu_fdt_setprop_string(mc->fdt, name, "compatible", "riscv,aclint-sswi");
qemu_fdt_setprop_cells(mc->fdt, name, "reg",
0x0, addr, 0x0, memmap[VIRT_ACLINT_SSWI].size);
qemu_fdt_setprop(mc->fdt, name, "interrupts-extended",
aclint_sswi_cells, aclint_cells_size);
qemu_fdt_setprop(mc->fdt, name, "interrupt-controller", NULL, 0);
qemu_fdt_setprop_cell(mc->fdt, name, "#interrupt-cells", 0);
riscv_socket_fdt_write_id(mc, mc->fdt, name, socket);
g_free(name);
g_free(aclint_mswi_cells);
g_free(aclint_mtimer_cells);
g_free(aclint_sswi_cells);
}
static void create_fdt_socket_plic(RISCVVirtState *s,
const MemMapEntry *memmap, int socket,
uint32_t *phandle, uint32_t *intc_phandles,
uint32_t *plic_phandles)
{
int cpu;
char *plic_name;
uint32_t *plic_cells;
unsigned long plic_addr;
MachineState *mc = MACHINE(s);
static const char * const plic_compat[2] = {
"sifive,plic-1.0.0", "riscv,plic0"
};
if (kvm_enabled()) {
plic_cells = g_new0(uint32_t, s->soc[socket].num_harts * 2);
} else {
plic_cells = g_new0(uint32_t, s->soc[socket].num_harts * 4);
}
for (cpu = 0; cpu < s->soc[socket].num_harts; cpu++) {
if (kvm_enabled()) {
plic_cells[cpu * 2 + 0] = cpu_to_be32(intc_phandles[cpu]);
plic_cells[cpu * 2 + 1] = cpu_to_be32(IRQ_S_EXT);
} else {
plic_cells[cpu * 4 + 0] = cpu_to_be32(intc_phandles[cpu]);
plic_cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_EXT);
plic_cells[cpu * 4 + 2] = cpu_to_be32(intc_phandles[cpu]);
plic_cells[cpu * 4 + 3] = cpu_to_be32(IRQ_S_EXT);
}
}
plic_phandles[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(mc->fdt, plic_name);
qemu_fdt_setprop_cell(mc->fdt, plic_name,
"#address-cells", FDT_PLIC_ADDR_CELLS);
qemu_fdt_setprop_cell(mc->fdt, plic_name,
"#interrupt-cells", FDT_PLIC_INT_CELLS);
qemu_fdt_setprop_string_array(mc->fdt, plic_name, "compatible",
(char **)&plic_compat,
ARRAY_SIZE(plic_compat));
qemu_fdt_setprop(mc->fdt, plic_name, "interrupt-controller", NULL, 0);
qemu_fdt_setprop(mc->fdt, plic_name, "interrupts-extended",
plic_cells, s->soc[socket].num_harts * sizeof(uint32_t) * 4);
qemu_fdt_setprop_cells(mc->fdt, plic_name, "reg",
0x0, plic_addr, 0x0, memmap[VIRT_PLIC].size);
qemu_fdt_setprop_cell(mc->fdt, plic_name, "riscv,ndev", VIRTIO_NDEV);
riscv_socket_fdt_write_id(mc, mc->fdt, plic_name, socket);
qemu_fdt_setprop_cell(mc->fdt, plic_name, "phandle",
plic_phandles[socket]);
g_free(plic_name);
g_free(plic_cells);
}
static void create_fdt_sockets(RISCVVirtState *s, const MemMapEntry *memmap,
bool is_32_bit, uint32_t *phandle,
uint32_t *irq_mmio_phandle,
uint32_t *irq_pcie_phandle,
uint32_t *irq_virtio_phandle)
{
int socket;
char *clust_name;
uint32_t *intc_phandles;
MachineState *mc = MACHINE(s);
uint32_t xplic_phandles[MAX_NODES];
qemu_fdt_add_subnode(mc->fdt, "/cpus");
qemu_fdt_setprop_cell(mc->fdt, "/cpus", "timebase-frequency",
RISCV_ACLINT_DEFAULT_TIMEBASE_FREQ);
qemu_fdt_setprop_cell(mc->fdt, "/cpus", "#size-cells", 0x0);
qemu_fdt_setprop_cell(mc->fdt, "/cpus", "#address-cells", 0x1);
qemu_fdt_add_subnode(mc->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(mc->fdt, clust_name);
intc_phandles = g_new0(uint32_t, s->soc[socket].num_harts);
create_fdt_socket_cpus(s, socket, clust_name, phandle,
is_32_bit, intc_phandles);
create_fdt_socket_memory(s, memmap, socket);
if (!kvm_enabled()) {
if (s->have_aclint) {
create_fdt_socket_aclint(s, memmap, socket, intc_phandles);
} else {
create_fdt_socket_clint(s, memmap, socket, intc_phandles);
}
}
create_fdt_socket_plic(s, memmap, socket, phandle,
intc_phandles, xplic_phandles);
g_free(intc_phandles);
g_free(clust_name);
}
for (socket = 0; socket < riscv_socket_count(mc); socket++) {
if (socket == 0) {
*irq_mmio_phandle = xplic_phandles[socket];
*irq_virtio_phandle = xplic_phandles[socket];
*irq_pcie_phandle = xplic_phandles[socket];
}
if (socket == 1) {
*irq_virtio_phandle = xplic_phandles[socket];
*irq_pcie_phandle = xplic_phandles[socket];
}
if (socket == 2) {
*irq_pcie_phandle = xplic_phandles[socket];
}
}
riscv_socket_fdt_write_distance_matrix(mc, mc->fdt);
}
static void create_fdt_virtio(RISCVVirtState *s, const MemMapEntry *memmap,
uint32_t irq_virtio_phandle)
{
int i;
char *name;
MachineState *mc = MACHINE(s);
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(mc->fdt, name);
qemu_fdt_setprop_string(mc->fdt, name, "compatible", "virtio,mmio");
qemu_fdt_setprop_cells(mc->fdt, name, "reg",
0x0, memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size,
0x0, memmap[VIRT_VIRTIO].size);
qemu_fdt_setprop_cell(mc->fdt, name, "interrupt-parent",
irq_virtio_phandle);
qemu_fdt_setprop_cell(mc->fdt, name, "interrupts", VIRTIO_IRQ + i);
g_free(name);
}
}
static void create_fdt_pcie(RISCVVirtState *s, const MemMapEntry *memmap,
uint32_t irq_pcie_phandle)
{
char *name;
MachineState *mc = MACHINE(s);
name = g_strdup_printf("/soc/pci@%lx",
(long) memmap[VIRT_PCIE_ECAM].base);
qemu_fdt_add_subnode(mc->fdt, name);
qemu_fdt_setprop_cell(mc->fdt, name, "#address-cells",
FDT_PCI_ADDR_CELLS);
qemu_fdt_setprop_cell(mc->fdt, name, "#interrupt-cells",
FDT_PCI_INT_CELLS);
qemu_fdt_setprop_cell(mc->fdt, name, "#size-cells", 0x2);
qemu_fdt_setprop_string(mc->fdt, name, "compatible",
"pci-host-ecam-generic");
qemu_fdt_setprop_string(mc->fdt, name, "device_type", "pci");
qemu_fdt_setprop_cell(mc->fdt, name, "linux,pci-domain", 0);
qemu_fdt_setprop_cells(mc->fdt, name, "bus-range", 0,
memmap[VIRT_PCIE_ECAM].size / PCIE_MMCFG_SIZE_MIN - 1);
qemu_fdt_setprop(mc->fdt, name, "dma-coherent", NULL, 0);
qemu_fdt_setprop_cells(mc->fdt, name, "reg", 0,
memmap[VIRT_PCIE_ECAM].base, 0, memmap[VIRT_PCIE_ECAM].size);
qemu_fdt_setprop_sized_cells(mc->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(mc->fdt, name, irq_pcie_phandle);
g_free(name);
}
static void create_fdt_reset(RISCVVirtState *s, const MemMapEntry *memmap,
uint32_t *phandle)
{
char *name;
uint32_t test_phandle;
MachineState *mc = MACHINE(s);
test_phandle = (*phandle)++;
name = g_strdup_printf("/soc/test@%lx",
(long)memmap[VIRT_TEST].base);
qemu_fdt_add_subnode(mc->fdt, name);
{
static const char * const compat[3] = {
"sifive,test1", "sifive,test0", "syscon"
};
qemu_fdt_setprop_string_array(mc->fdt, name, "compatible",
(char **)&compat, ARRAY_SIZE(compat));
}
qemu_fdt_setprop_cells(mc->fdt, name, "reg",
0x0, memmap[VIRT_TEST].base, 0x0, memmap[VIRT_TEST].size);
qemu_fdt_setprop_cell(mc->fdt, name, "phandle", test_phandle);
test_phandle = qemu_fdt_get_phandle(mc->fdt, name);
g_free(name);
name = g_strdup_printf("/soc/reboot");
qemu_fdt_add_subnode(mc->fdt, name);
qemu_fdt_setprop_string(mc->fdt, name, "compatible", "syscon-reboot");
qemu_fdt_setprop_cell(mc->fdt, name, "regmap", test_phandle);
qemu_fdt_setprop_cell(mc->fdt, name, "offset", 0x0);
qemu_fdt_setprop_cell(mc->fdt, name, "value", FINISHER_RESET);
g_free(name);
name = g_strdup_printf("/soc/poweroff");
qemu_fdt_add_subnode(mc->fdt, name);
qemu_fdt_setprop_string(mc->fdt, name, "compatible", "syscon-poweroff");
qemu_fdt_setprop_cell(mc->fdt, name, "regmap", test_phandle);
qemu_fdt_setprop_cell(mc->fdt, name, "offset", 0x0);
qemu_fdt_setprop_cell(mc->fdt, name, "value", FINISHER_PASS);
g_free(name);
}
static void create_fdt_uart(RISCVVirtState *s, const MemMapEntry *memmap,
uint32_t irq_mmio_phandle)
{
char *name;
MachineState *mc = MACHINE(s);
name = g_strdup_printf("/soc/uart@%lx", (long)memmap[VIRT_UART0].base);
qemu_fdt_add_subnode(mc->fdt, name);
qemu_fdt_setprop_string(mc->fdt, name, "compatible", "ns16550a");
qemu_fdt_setprop_cells(mc->fdt, name, "reg",
0x0, memmap[VIRT_UART0].base,
0x0, memmap[VIRT_UART0].size);
qemu_fdt_setprop_cell(mc->fdt, name, "clock-frequency", 3686400);
qemu_fdt_setprop_cell(mc->fdt, name, "interrupt-parent", irq_mmio_phandle);
qemu_fdt_setprop_cell(mc->fdt, name, "interrupts", UART0_IRQ);
qemu_fdt_add_subnode(mc->fdt, "/chosen");
qemu_fdt_setprop_string(mc->fdt, "/chosen", "stdout-path", name);
g_free(name);
}
static void create_fdt_rtc(RISCVVirtState *s, const MemMapEntry *memmap,
uint32_t irq_mmio_phandle)
{
char *name;
MachineState *mc = MACHINE(s);
name = g_strdup_printf("/soc/rtc@%lx", (long)memmap[VIRT_RTC].base);
qemu_fdt_add_subnode(mc->fdt, name);
qemu_fdt_setprop_string(mc->fdt, name, "compatible",
"google,goldfish-rtc");
qemu_fdt_setprop_cells(mc->fdt, name, "reg",
0x0, memmap[VIRT_RTC].base, 0x0, memmap[VIRT_RTC].size);
qemu_fdt_setprop_cell(mc->fdt, name, "interrupt-parent",
irq_mmio_phandle);
qemu_fdt_setprop_cell(mc->fdt, name, "interrupts", RTC_IRQ);
g_free(name);
}
static void create_fdt_flash(RISCVVirtState *s, const MemMapEntry *memmap)
{
char *name;
MachineState *mc = MACHINE(s);
hwaddr flashsize = virt_memmap[VIRT_FLASH].size / 2;
hwaddr flashbase = virt_memmap[VIRT_FLASH].base;
name = g_strdup_printf("/flash@%" PRIx64, flashbase);
qemu_fdt_add_subnode(mc->fdt, name);
qemu_fdt_setprop_string(mc->fdt, name, "compatible", "cfi-flash");
qemu_fdt_setprop_sized_cells(mc->fdt, name, "reg",
2, flashbase, 2, flashsize,
2, flashbase + flashsize, 2, flashsize);
qemu_fdt_setprop_cell(mc->fdt, name, "bank-width", 4);
g_free(name);
}
static void create_fdt(RISCVVirtState *s, const MemMapEntry *memmap,
uint64_t mem_size, const char *cmdline, bool is_32_bit)
{
MachineState *mc = MACHINE(s);
uint32_t phandle = 1, irq_mmio_phandle = 1;
uint32_t irq_pcie_phandle = 1, irq_virtio_phandle = 1;
if (mc->dtb) {
mc->fdt = load_device_tree(mc->dtb, &s->fdt_size);
if (!mc->fdt) {
error_report("load_device_tree() failed");
exit(1);
}
goto update_bootargs;
} else {
mc->fdt = create_device_tree(&s->fdt_size);
if (!mc->fdt) {
error_report("create_device_tree() failed");
exit(1);
}
}
qemu_fdt_setprop_string(mc->fdt, "/", "model", "riscv-virtio,qemu");
qemu_fdt_setprop_string(mc->fdt, "/", "compatible", "riscv-virtio");
qemu_fdt_setprop_cell(mc->fdt, "/", "#size-cells", 0x2);
qemu_fdt_setprop_cell(mc->fdt, "/", "#address-cells", 0x2);
qemu_fdt_add_subnode(mc->fdt, "/soc");
qemu_fdt_setprop(mc->fdt, "/soc", "ranges", NULL, 0);
qemu_fdt_setprop_string(mc->fdt, "/soc", "compatible", "simple-bus");
qemu_fdt_setprop_cell(mc->fdt, "/soc", "#size-cells", 0x2);
qemu_fdt_setprop_cell(mc->fdt, "/soc", "#address-cells", 0x2);
create_fdt_sockets(s, memmap, is_32_bit, &phandle,
&irq_mmio_phandle, &irq_pcie_phandle, &irq_virtio_phandle);
create_fdt_virtio(s, memmap, irq_virtio_phandle);
create_fdt_pcie(s, memmap, irq_pcie_phandle);
create_fdt_reset(s, memmap, &phandle);
create_fdt_uart(s, memmap, irq_mmio_phandle);
create_fdt_rtc(s, memmap, irq_mmio_phandle);
create_fdt_flash(s, memmap);
update_bootargs:
if (cmdline) {
qemu_fdt_setprop_string(mc->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 FWCfgState *create_fw_cfg(const MachineState *mc)
{
hwaddr base = virt_memmap[VIRT_FW_CFG].base;
hwaddr size = virt_memmap[VIRT_FW_CFG].size;
FWCfgState *fw_cfg;
char *nodename;
fw_cfg = fw_cfg_init_mem_wide(base + 8, base, 8, base + 16,
&address_space_memory);
fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, (uint16_t)mc->smp.cpus);
nodename = g_strdup_printf("/fw-cfg@%" PRIx64, base);
qemu_fdt_add_subnode(mc->fdt, nodename);
qemu_fdt_setprop_string(mc->fdt, nodename,
"compatible", "qemu,fw-cfg-mmio");
qemu_fdt_setprop_sized_cells(mc->fdt, nodename, "reg",
2, base, 2, size);
qemu_fdt_setprop(mc->fdt, nodename, "dma-coherent", NULL, 0);
g_free(nodename);
return fw_cfg;
}
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 *mask_rom = g_new(MemoryRegion, 1);
char *plic_hart_config, *soc_name;
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, 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);
if (!kvm_enabled()) {
/* Per-socket CLINT */
riscv_aclint_swi_create(
memmap[VIRT_CLINT].base + i * memmap[VIRT_CLINT].size,
base_hartid, hart_count, false);
riscv_aclint_mtimer_create(
memmap[VIRT_CLINT].base + i * memmap[VIRT_CLINT].size +
RISCV_ACLINT_SWI_SIZE,
RISCV_ACLINT_DEFAULT_MTIMER_SIZE, base_hartid, hart_count,
RISCV_ACLINT_DEFAULT_MTIMECMP, RISCV_ACLINT_DEFAULT_MTIME,
RISCV_ACLINT_DEFAULT_TIMEBASE_FREQ, true);
/* Per-socket ACLINT SSWI */
if (s->have_aclint) {
riscv_aclint_swi_create(
memmap[VIRT_ACLINT_SSWI].base +
i * memmap[VIRT_ACLINT_SSWI].size,
base_hartid, hart_count, true);
}
}
/* Per-socket PLIC hart topology configuration string */
plic_hart_config = riscv_plic_hart_config_string(hart_count);
/* Per-socket PLIC */
s->plic[i] = sifive_plic_create(
memmap[VIRT_PLIC].base + i * memmap[VIRT_PLIC].size,
plic_hart_config, hart_count, 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_add_subregion(system_memory, memmap[VIRT_DRAM].base,
machine->ram);
/* 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);
/*
* Only direct boot kernel is currently supported for KVM VM,
* so the "-bios" parameter is ignored and treated like "-bios none"
* when KVM is enabled.
*/
if (kvm_enabled()) {
g_free(machine->firmware);
machine->firmware = g_strdup("none");
}
if (riscv_is_32bit(&s->soc[0])) {
firmware_end_addr = riscv_find_and_load_firmware(machine,
RISCV32_BIOS_BIN, start_addr, NULL);
} else {
firmware_end_addr = riscv_find_and_load_firmware(machine,
RISCV64_BIOS_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(machine->fdt, "/chosen",
"linux,initrd-start", start);
qemu_fdt_setprop_cell(machine->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;
}
/*
* Init fw_cfg. Must be done before riscv_load_fdt, otherwise the device
* tree cannot be altered and we get FDT_ERR_NOSPACE.
*/
s->fw_cfg = create_fw_cfg(machine);
rom_set_fw(s->fw_cfg);
/* Compute the fdt load address in dram */
fdt_load_addr = riscv_load_fdt(memmap[VIRT_DRAM].base,
machine->ram_size, machine->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, machine->fdt);
/*
* Only direct boot kernel is currently supported for KVM VM,
* So here setup kernel start address and fdt address.
* TODO:Support firmware loading and integrate to TCG start
*/
if (kvm_enabled()) {
riscv_setup_direct_kernel(kernel_entry, fdt_load_addr);
}
/* 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 bool virt_get_aclint(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
RISCVVirtState *s = RISCV_VIRT_MACHINE(ms);
return s->have_aclint;
}
static void virt_set_aclint(Object *obj, bool value, Error **errp)
{
MachineState *ms = MACHINE(obj);
RISCVVirtState *s = RISCV_VIRT_MACHINE(ms);
s->have_aclint = value;
}
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;
mc->default_ram_id = "riscv_virt_board.ram";
machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE);
object_class_property_add_bool(oc, "aclint", virt_get_aclint,
virt_set_aclint);
object_class_property_set_description(oc, "aclint",
"Set on/off to enable/disable "
"emulating ACLINT devices");
}
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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