aboutsummaryrefslogtreecommitdiff
path: root/hw/riscv/virt.c
diff options
context:
space:
mode:
Diffstat (limited to 'hw/riscv/virt.c')
-rw-r--r--hw/riscv/virt.c85
1 files changed, 31 insertions, 54 deletions
diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
index 4f69eb2cff..ad03113e0f 100644
--- a/hw/riscv/virt.c
+++ b/hw/riscv/virt.c
@@ -40,13 +40,15 @@
#include "exec/address-spaces.h"
#include "elf.h"
+#include <libfdt.h>
+
static const struct MemmapEntry {
hwaddr base;
hwaddr size;
} virt_memmap[] = {
[VIRT_DEBUG] = { 0x0, 0x100 },
- [VIRT_MROM] = { 0x1000, 0x2000 },
- [VIRT_TEST] = { 0x4000, 0x1000 },
+ [VIRT_MROM] = { 0x1000, 0x11000 },
+ [VIRT_TEST] = { 0x100000, 0x1000 },
[VIRT_CLINT] = { 0x2000000, 0x10000 },
[VIRT_PLIC] = { 0xc000000, 0x4000000 },
[VIRT_UART0] = { 0x10000000, 0x100 },
@@ -54,26 +56,13 @@ static const struct MemmapEntry {
[VIRT_DRAM] = { 0x80000000, 0x0 },
};
-static void copy_le32_to_phys(hwaddr pa, uint32_t *rom, size_t len)
-{
- int i;
- for (i = 0; i < (len >> 2); i++) {
- stl_phys(&address_space_memory, pa + (i << 2), rom[i]);
- }
-}
-
-static uint64_t identity_translate(void *opaque, uint64_t addr)
-{
- return addr;
-}
-
static uint64_t load_kernel(const char *kernel_filename)
{
uint64_t kernel_entry, kernel_high;
- if (load_elf(kernel_filename, identity_translate, NULL,
+ if (load_elf(kernel_filename, NULL, NULL,
&kernel_entry, NULL, &kernel_high,
- 0, ELF_MACHINE, 1, 0) < 0) {
+ 0, EM_RISCV, 1, 0) < 0) {
error_report("qemu: could not load kernel '%s'", kernel_filename);
exit(1);
}
@@ -145,7 +134,8 @@ static void *create_fdt(RISCVVirtState *s, const struct MemmapEntry *memmap,
g_free(nodename);
qemu_fdt_add_subnode(fdt, "/cpus");
- qemu_fdt_setprop_cell(fdt, "/cpus", "timebase-frequency", 10000000);
+ 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);
@@ -155,7 +145,8 @@ static void *create_fdt(RISCVVirtState *s, const struct MemmapEntry *memmap,
char *intc = g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu);
char *isa = riscv_isa_string(&s->soc.harts[cpu]);
qemu_fdt_add_subnode(fdt, nodename);
- qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency", 1000000000);
+ qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency",
+ VIRT_CLOCK_FREQ);
qemu_fdt_setprop_string(fdt, nodename, "mmu-type", "riscv,sv48");
qemu_fdt_setprop_string(fdt, nodename, "riscv,isa", isa);
qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv");
@@ -275,7 +266,7 @@ static void riscv_virt_board_init(MachineState *machine)
RISCVVirtState *s = g_new0(RISCVVirtState, 1);
MemoryRegion *system_memory = get_system_memory();
MemoryRegion *main_mem = g_new(MemoryRegion, 1);
- MemoryRegion *boot_rom = g_new(MemoryRegion, 1);
+ MemoryRegion *mask_rom = g_new(MemoryRegion, 1);
char *plic_hart_config;
size_t plic_hart_config_len;
int i;
@@ -302,9 +293,10 @@ static void riscv_virt_board_init(MachineState *machine)
fdt = create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline);
/* boot rom */
- memory_region_init_ram(boot_rom, NULL, "riscv_virt_board.bootrom",
- s->fdt_size + 0x2000, &error_fatal);
- memory_region_add_subregion(system_memory, 0x0, 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 (machine->kernel_filename) {
uint64_t kernel_entry = load_kernel(machine->kernel_filename);
@@ -338,13 +330,23 @@ static void riscv_virt_board_init(MachineState *machine)
/* dtb: */
};
- /* copy in the reset vector */
- copy_le32_to_phys(ROM_BASE, reset_vec, sizeof(reset_vec));
+ /* copy in the reset vector in little_endian byte order */
+ for (i = 0; i < sizeof(reset_vec) >> 2; i++) {
+ reset_vec[i] = cpu_to_le32(reset_vec[i]);
+ }
+ rom_add_blob_fixed_as("mrom.reset", reset_vec, sizeof(reset_vec),
+ memmap[VIRT_MROM].base, &address_space_memory);
/* copy in the device tree */
- qemu_fdt_dumpdtb(s->fdt, s->fdt_size);
- cpu_physical_memory_write(ROM_BASE + sizeof(reset_vec),
- s->fdt, s->fdt_size);
+ if (fdt_pack(s->fdt) || fdt_totalsize(s->fdt) >
+ memmap[VIRT_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[VIRT_MROM].base + sizeof(reset_vec),
+ &address_space_memory);
/* create PLIC hart topology configuration string */
plic_hart_config_len = (strlen(VIRT_PLIC_HART_CONFIG) + 1) * smp_cpus;
@@ -385,36 +387,11 @@ static void riscv_virt_board_init(MachineState *machine)
serial_hd(0), DEVICE_LITTLE_ENDIAN);
}
-static int riscv_virt_board_sysbus_device_init(SysBusDevice *sysbusdev)
-{
- return 0;
-}
-
-static void riscv_virt_board_class_init(ObjectClass *klass, void *data)
-{
- SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
- k->init = riscv_virt_board_sysbus_device_init;
-}
-
-static const TypeInfo riscv_virt_board_device = {
- .name = TYPE_RISCV_VIRT_BOARD,
- .parent = TYPE_SYS_BUS_DEVICE,
- .instance_size = sizeof(RISCVVirtState),
- .class_init = riscv_virt_board_class_init,
-};
-
static void riscv_virt_board_machine_init(MachineClass *mc)
{
- mc->desc = "RISC-V VirtIO Board (Privileged spec v1.10)";
+ mc->desc = "RISC-V VirtIO Board (Privileged ISA v1.10)";
mc->init = riscv_virt_board_init;
mc->max_cpus = 8; /* hardcoded limit in BBL */
}
DEFINE_MACHINE("virt", riscv_virt_board_machine_init)
-
-static void riscv_virt_board_register_types(void)
-{
- type_register_static(&riscv_virt_board_device);
-}
-
-type_init(riscv_virt_board_register_types);
generated by cgit v1.2.3 (git 2.26.2) at 2025-03-01 18:36:45 +0000