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-rw-r--r--hw/loongarch/boot.c104
-rw-r--r--hw/loongarch/virt-acpi-build.c4
-rw-r--r--hw/loongarch/virt.c98
3 files changed, 135 insertions, 71 deletions
diff --git a/hw/loongarch/boot.c b/hw/loongarch/boot.c
index 0324d6a..14d6c52 100644
--- a/hw/loongarch/boot.c
+++ b/hw/loongarch/boot.c
@@ -35,12 +35,6 @@ struct loongarch_linux_hdr {
uint32_t pe_header_offset;
} QEMU_PACKED;
-struct memmap_entry *memmap_table;
-unsigned memmap_entries;
-
-ram_addr_t initrd_offset;
-uint64_t initrd_size;
-
static const unsigned int slave_boot_code[] = {
/* Configure reset ebase. */
0x0400302c, /* csrwr $t0, LOONGARCH_CSR_EENTRY */
@@ -94,12 +88,16 @@ static inline void *guidcpy(void *dst, const void *src)
return memcpy(dst, src, sizeof(efi_guid_t));
}
-static void init_efi_boot_memmap(struct efi_system_table *systab,
+static void init_efi_boot_memmap(MachineState *ms,
+ struct efi_system_table *systab,
void *p, void *start)
{
unsigned i;
struct efi_boot_memmap *boot_memmap = p;
efi_guid_t tbl_guid = LINUX_EFI_BOOT_MEMMAP_GUID;
+ LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(ms);
+ struct memmap_entry *memmap_table;
+ unsigned int memmap_entries;
/* efi_configuration_table 1 */
guidcpy(&systab->tables[0].guid, &tbl_guid);
@@ -111,6 +109,8 @@ static void init_efi_boot_memmap(struct efi_system_table *systab,
boot_memmap->map_size = 0;
efi_memory_desc_t *map = p + sizeof(struct efi_boot_memmap);
+ memmap_table = lvms->memmap_table;
+ memmap_entries = lvms->memmap_entries;
for (i = 0; i < memmap_entries; i++) {
map = (void *)boot_memmap + sizeof(*map);
map[i].type = memmap_table[i].type;
@@ -121,7 +121,8 @@ static void init_efi_boot_memmap(struct efi_system_table *systab,
}
}
-static void init_efi_initrd_table(struct efi_system_table *systab,
+static void init_efi_initrd_table(struct loongarch_boot_info *info,
+ struct efi_system_table *systab,
void *p, void *start)
{
efi_guid_t tbl_guid = LINUX_EFI_INITRD_MEDIA_GUID;
@@ -132,8 +133,8 @@ static void init_efi_initrd_table(struct efi_system_table *systab,
systab->tables[1].table = (struct efi_configuration_table *)(p - start);
systab->nr_tables = 2;
- initrd_table->base = initrd_offset;
- initrd_table->size = initrd_size;
+ initrd_table->base = info->initrd_addr;
+ initrd_table->size = info->initrd_size;
}
static void init_efi_fdt_table(struct efi_system_table *systab)
@@ -146,10 +147,12 @@ static void init_efi_fdt_table(struct efi_system_table *systab)
systab->nr_tables = 3;
}
-static void init_systab(struct loongarch_boot_info *info, void *p, void *start)
+static void init_systab(MachineState *ms,
+ struct loongarch_boot_info *info, void *p, void *start)
{
void *bp_tables_start;
struct efi_system_table *systab = p;
+ LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(ms);
info->a2 = p - start;
@@ -166,10 +169,10 @@ static void init_systab(struct loongarch_boot_info *info, void *p, void *start)
systab->tables = p;
bp_tables_start = p;
- init_efi_boot_memmap(systab, p, start);
+ init_efi_boot_memmap(ms, systab, p, start);
p += ROUND_UP(sizeof(struct efi_boot_memmap) +
- sizeof(efi_memory_desc_t) * memmap_entries, 64 * KiB);
- init_efi_initrd_table(systab, p, start);
+ sizeof(efi_memory_desc_t) * lvms->memmap_entries, 64 * KiB);
+ init_efi_initrd_table(info, systab, p, start);
p += ROUND_UP(sizeof(struct efi_initrd), 64 * KiB);
init_efi_fdt_table(systab);
@@ -235,10 +238,49 @@ static int64_t load_loongarch_linux_image(const char *filename,
return size;
}
+static ram_addr_t alloc_initrd_memory(struct loongarch_boot_info *info,
+ uint64_t advice_start, ssize_t rd_size)
+{
+ hwaddr base, ram_size, gap, low_end;
+ ram_addr_t initrd_end, initrd_start;
+
+ base = VIRT_LOWMEM_BASE;
+ gap = VIRT_LOWMEM_SIZE;
+ initrd_start = advice_start;
+ initrd_end = initrd_start + rd_size;
+
+ ram_size = info->ram_size;
+ low_end = base + MIN(ram_size, gap);
+ if (initrd_end <= low_end) {
+ return initrd_start;
+ }
+
+ if (ram_size <= gap) {
+ error_report("The low memory too small for initial ram disk '%s',"
+ "You need to expand the ram",
+ info->initrd_filename);
+ exit(1);
+ }
+
+ /*
+ * Try to load initrd in the high memory
+ */
+ ram_size -= gap;
+ initrd_start = VIRT_HIGHMEM_BASE;
+ if (rd_size <= ram_size) {
+ return initrd_start;
+ }
+
+ error_report("The high memory too small for initial ram disk '%s',"
+ "You need to expand the ram",
+ info->initrd_filename);
+ exit(1);
+}
+
static int64_t load_kernel_info(struct loongarch_boot_info *info)
{
- uint64_t kernel_entry, kernel_low, kernel_high;
- ssize_t kernel_size;
+ uint64_t kernel_entry, kernel_low, kernel_high, initrd_offset = 0;
+ ssize_t kernel_size, initrd_size;
kernel_size = load_elf(info->kernel_filename, NULL,
cpu_loongarch_virt_to_phys, NULL,
@@ -263,15 +305,10 @@ static int64_t load_kernel_info(struct loongarch_boot_info *info)
initrd_size = get_image_size(info->initrd_filename);
if (initrd_size > 0) {
initrd_offset = ROUND_UP(kernel_high + 4 * kernel_size, 64 * KiB);
-
- if (initrd_offset + initrd_size > info->ram_size) {
- error_report("memory too small for initial ram disk '%s'",
- info->initrd_filename);
- exit(1);
- }
-
- initrd_size = load_image_targphys(info->initrd_filename, initrd_offset,
- info->ram_size - initrd_offset);
+ initrd_offset = alloc_initrd_memory(info, initrd_offset,
+ initrd_size);
+ initrd_size = load_image_targphys(info->initrd_filename,
+ initrd_offset, initrd_size);
}
if (initrd_size == (target_ulong)-1) {
@@ -279,8 +316,9 @@ static int64_t load_kernel_info(struct loongarch_boot_info *info)
info->initrd_filename);
exit(1);
}
- } else {
- initrd_size = 0;
+
+ info->initrd_addr = initrd_offset;
+ info->initrd_size = initrd_size;
}
return kernel_entry;
@@ -335,17 +373,19 @@ static void loongarch_firmware_boot(LoongArchVirtMachineState *lvms,
fw_cfg_add_kernel_info(info, lvms->fw_cfg);
}
-static void init_boot_rom(struct loongarch_boot_info *info, void *p)
+static void init_boot_rom(MachineState *ms,
+ struct loongarch_boot_info *info, void *p)
{
void *start = p;
init_cmdline(info, p, start);
p += COMMAND_LINE_SIZE;
- init_systab(info, p, start);
+ init_systab(ms, info, p, start);
}
-static void loongarch_direct_kernel_boot(struct loongarch_boot_info *info)
+static void loongarch_direct_kernel_boot(MachineState *ms,
+ struct loongarch_boot_info *info)
{
void *p, *bp;
int64_t kernel_addr = VIRT_FLASH0_BASE;
@@ -363,7 +403,7 @@ static void loongarch_direct_kernel_boot(struct loongarch_boot_info *info)
/* Load cmdline and system tables at [0 - 1 MiB] */
p = g_malloc0(1 * MiB);
bp = p;
- init_boot_rom(info, p);
+ init_boot_rom(ms, info, p);
rom_add_blob_fixed_as("boot_info", bp, 1 * MiB, 0, &address_space_memory);
/* Load slave boot code at pflash0 . */
@@ -403,6 +443,6 @@ void loongarch_load_kernel(MachineState *ms, struct loongarch_boot_info *info)
if (lvms->bios_loaded) {
loongarch_firmware_boot(lvms, info);
} else {
- loongarch_direct_kernel_boot(info);
+ loongarch_direct_kernel_boot(ms, info);
}
}
diff --git a/hw/loongarch/virt-acpi-build.c b/hw/loongarch/virt-acpi-build.c
index 073b6de..2cd2d9d 100644
--- a/hw/loongarch/virt-acpi-build.c
+++ b/hw/loongarch/virt-acpi-build.c
@@ -575,8 +575,8 @@ static void acpi_build(AcpiBuildTables *tables, MachineState *machine)
acpi_add_table(table_offsets, tables_blob);
{
AcpiMcfgInfo mcfg = {
- .base = cpu_to_le64(VIRT_PCI_CFG_BASE),
- .size = cpu_to_le64(VIRT_PCI_CFG_SIZE),
+ .base = VIRT_PCI_CFG_BASE,
+ .size = VIRT_PCI_CFG_SIZE,
};
build_mcfg(tables_blob, tables->linker, &mcfg, lvms->oem_id,
lvms->oem_table_id);
diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c
index 7ad7fb6..b15ada2 100644
--- a/hw/loongarch/virt.c
+++ b/hw/loongarch/virt.c
@@ -136,6 +136,10 @@ static void virt_build_smbios(LoongArchVirtMachineState *lvms)
return;
}
+ if (kvm_enabled()) {
+ product = "KVM Virtual Machine";
+ }
+
smbios_set_defaults("QEMU", product, mc->name);
smbios_get_tables(ms, SMBIOS_ENTRY_POINT_TYPE_64,
@@ -168,8 +172,15 @@ static void virt_powerdown_req(Notifier *notifier, void *opaque)
acpi_send_event(s->acpi_ged, ACPI_POWER_DOWN_STATUS);
}
-static void memmap_add_entry(uint64_t address, uint64_t length, uint32_t type)
+static void memmap_add_entry(MachineState *ms, uint64_t address,
+ uint64_t length, uint32_t type)
{
+ LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(ms);
+ struct memmap_entry *memmap_table;
+ unsigned int memmap_entries;
+
+ memmap_table = lvms->memmap_table;
+ memmap_entries = lvms->memmap_entries;
/* Ensure there are no duplicate entries. */
for (unsigned i = 0; i < memmap_entries; i++) {
assert(memmap_table[i].address != address);
@@ -182,6 +193,8 @@ static void memmap_add_entry(uint64_t address, uint64_t length, uint32_t type)
memmap_table[memmap_entries].type = cpu_to_le32(type);
memmap_table[memmap_entries].reserved = 0;
memmap_entries++;
+ lvms->memmap_table = memmap_table;
+ lvms->memmap_entries = memmap_entries;
}
static DeviceState *create_acpi_ged(DeviceState *pch_pic,
@@ -401,12 +414,6 @@ static void virt_irq_init(LoongArchVirtMachineState *lvms)
lvms->ipi = ipi;
sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal);
- /* IPI iocsr memory region */
- memory_region_add_subregion(&lvms->system_iocsr, SMP_IPI_MAILBOX,
- sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 0));
- memory_region_add_subregion(&lvms->system_iocsr, MAIL_SEND_ADDR,
- sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 1));
-
/* Create EXTIOI device */
extioi = qdev_new(TYPE_LOONGARCH_EXTIOI);
lvms->extioi = extioi;
@@ -414,12 +421,6 @@ static void virt_irq_init(LoongArchVirtMachineState *lvms)
qdev_prop_set_bit(extioi, "has-virtualization-extension", true);
}
sysbus_realize_and_unref(SYS_BUS_DEVICE(extioi), &error_fatal);
- memory_region_add_subregion(&lvms->system_iocsr, APIC_BASE,
- sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 0));
- if (virt_is_veiointc_enabled(lvms)) {
- memory_region_add_subregion(&lvms->system_iocsr, EXTIOI_VIRT_BASE,
- sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 1));
- }
virt_cpu_irq_init(lvms);
pch_pic = qdev_new(TYPE_LOONGARCH_PIC);
@@ -427,19 +428,6 @@ static void virt_irq_init(LoongArchVirtMachineState *lvms)
qdev_prop_set_uint32(pch_pic, "pch_pic_irq_num", num);
d = SYS_BUS_DEVICE(pch_pic);
sysbus_realize_and_unref(d, &error_fatal);
- memory_region_add_subregion(get_system_memory(), VIRT_IOAPIC_REG_BASE,
- sysbus_mmio_get_region(d, 0));
- memory_region_add_subregion(get_system_memory(),
- VIRT_IOAPIC_REG_BASE + PCH_PIC_ROUTE_ENTRY_OFFSET,
- sysbus_mmio_get_region(d, 1));
- memory_region_add_subregion(get_system_memory(),
- VIRT_IOAPIC_REG_BASE + PCH_PIC_INT_STATUS_LO,
- sysbus_mmio_get_region(d, 2));
-
- /* Connect pch_pic irqs to extioi */
- for (i = 0; i < num; i++) {
- qdev_connect_gpio_out(DEVICE(d), i, qdev_get_gpio_in(extioi, i));
- }
pch_msi = qdev_new(TYPE_LOONGARCH_PCH_MSI);
start = num;
@@ -449,12 +437,40 @@ static void virt_irq_init(LoongArchVirtMachineState *lvms)
d = SYS_BUS_DEVICE(pch_msi);
sysbus_realize_and_unref(d, &error_fatal);
sysbus_mmio_map(d, 0, VIRT_PCH_MSI_ADDR_LOW);
- for (i = 0; i < num; i++) {
- /* Connect pch_msi irqs to extioi */
- qdev_connect_gpio_out(DEVICE(d), i,
- qdev_get_gpio_in(extioi, i + start));
- }
+ if (kvm_irqchip_in_kernel()) {
+ kvm_loongarch_init_irq_routing();
+ } else {
+ /* IPI iocsr memory region */
+ memory_region_add_subregion(&lvms->system_iocsr, SMP_IPI_MAILBOX,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 0));
+ memory_region_add_subregion(&lvms->system_iocsr, MAIL_SEND_ADDR,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 1));
+
+ /* EXTIOI iocsr memory region */
+ memory_region_add_subregion(&lvms->system_iocsr, APIC_BASE,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 0));
+ if (virt_is_veiointc_enabled(lvms)) {
+ memory_region_add_subregion(&lvms->system_iocsr, EXTIOI_VIRT_BASE,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 1));
+ }
+
+ /* PCH_PIC memory region */
+ memory_region_add_subregion(get_system_memory(), VIRT_IOAPIC_REG_BASE,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(pch_pic), 0));
+
+ /* Connect pch_pic irqs to extioi */
+ for (i = 0; i < VIRT_PCH_PIC_IRQ_NUM; i++) {
+ qdev_connect_gpio_out(DEVICE(pch_pic), i,
+ qdev_get_gpio_in(extioi, i));
+ }
+
+ for (i = VIRT_PCH_PIC_IRQ_NUM; i < EXTIOI_IRQS; i++) {
+ /* Connect pch_msi irqs to extioi */
+ qdev_connect_gpio_out(DEVICE(pch_msi), i - VIRT_PCH_PIC_IRQ_NUM,
+ qdev_get_gpio_in(extioi, i));
+ }
+ }
virt_devices_init(pch_pic, lvms);
}
@@ -515,6 +531,10 @@ static MemTxResult virt_iocsr_misc_write(void *opaque, hwaddr addr,
switch (addr) {
case MISC_FUNC_REG:
+ if (kvm_irqchip_in_kernel()) {
+ return MEMTX_OK;
+ }
+
if (!virt_is_veiointc_enabled(lvms)) {
return MEMTX_OK;
}
@@ -565,6 +585,10 @@ static MemTxResult virt_iocsr_misc_read(void *opaque, hwaddr addr,
ret = 0x303030354133ULL; /* "3A5000" */
break;
case MISC_FUNC_REG:
+ if (kvm_irqchip_in_kernel()) {
+ return MEMTX_OK;
+ }
+
if (!virt_is_veiointc_enabled(lvms)) {
ret |= BIT_ULL(IOCSRM_EXTIOI_EN);
break;
@@ -625,13 +649,13 @@ static void fw_cfg_add_memory(MachineState *ms)
}
if (size >= gap) {
- memmap_add_entry(base, gap, 1);
+ memmap_add_entry(ms, base, gap, 1);
size -= gap;
base = VIRT_HIGHMEM_BASE;
}
if (size) {
- memmap_add_entry(base, size, 1);
+ memmap_add_entry(ms, base, size, 1);
base += size;
}
@@ -646,7 +670,7 @@ static void fw_cfg_add_memory(MachineState *ms)
* lowram: [base, +(gap - numa_info[0].node_mem))
* highram: [VIRT_HIGHMEM_BASE, +(ram_size - gap))
*/
- memmap_add_entry(base, gap - numa_info[0].node_mem, 1);
+ memmap_add_entry(ms, base, gap - numa_info[0].node_mem, 1);
size = ram_size - gap;
base = VIRT_HIGHMEM_BASE;
} else {
@@ -654,7 +678,7 @@ static void fw_cfg_add_memory(MachineState *ms)
}
if (size) {
- memmap_add_entry(base, size, 1);
+ memmap_add_entry(ms, base, size, 1);
}
}
@@ -740,8 +764,8 @@ static void virt_init(MachineState *machine)
rom_set_fw(lvms->fw_cfg);
if (lvms->fw_cfg != NULL) {
fw_cfg_add_file(lvms->fw_cfg, "etc/memmap",
- memmap_table,
- sizeof(struct memmap_entry) * (memmap_entries));
+ lvms->memmap_table,
+ sizeof(struct memmap_entry) * lvms->memmap_entries);
}
/* Initialize the IO interrupt subsystem */
generated by cgit v1.1 at 2025-07-13 17:50:57 +0000