xref: /qemu/hw/i386/microvm.c (revision 852c27e2)
10ebf007dSSergio Lopez /*
20ebf007dSSergio Lopez  * Copyright (c) 2018 Intel Corporation
30ebf007dSSergio Lopez  * Copyright (c) 2019 Red Hat, Inc.
40ebf007dSSergio Lopez  *
50ebf007dSSergio Lopez  * This program is free software; you can redistribute it and/or modify it
60ebf007dSSergio Lopez  * under the terms and conditions of the GNU General Public License,
70ebf007dSSergio Lopez  * version 2 or later, as published by the Free Software Foundation.
80ebf007dSSergio Lopez  *
90ebf007dSSergio Lopez  * This program is distributed in the hope it will be useful, but WITHOUT
100ebf007dSSergio Lopez  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
110ebf007dSSergio Lopez  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
120ebf007dSSergio Lopez  * more details.
130ebf007dSSergio Lopez  *
140ebf007dSSergio Lopez  * You should have received a copy of the GNU General Public License along with
150ebf007dSSergio Lopez  * this program.  If not, see <http://www.gnu.org/licenses/>.
160ebf007dSSergio Lopez  */
170ebf007dSSergio Lopez 
180ebf007dSSergio Lopez #include "qemu/osdep.h"
190ebf007dSSergio Lopez #include "qemu/error-report.h"
200ebf007dSSergio Lopez #include "qemu/cutils.h"
210ebf007dSSergio Lopez #include "qemu/units.h"
220ebf007dSSergio Lopez #include "qapi/error.h"
230ebf007dSSergio Lopez #include "qapi/visitor.h"
240ebf007dSSergio Lopez #include "qapi/qapi-visit-common.h"
250ebf007dSSergio Lopez #include "sysemu/sysemu.h"
260ebf007dSSergio Lopez #include "sysemu/cpus.h"
270ebf007dSSergio Lopez #include "sysemu/numa.h"
280ebf007dSSergio Lopez #include "sysemu/reset.h"
290ebf007dSSergio Lopez 
300ebf007dSSergio Lopez #include "hw/loader.h"
310ebf007dSSergio Lopez #include "hw/irq.h"
320ebf007dSSergio Lopez #include "hw/kvm/clock.h"
330ebf007dSSergio Lopez #include "hw/i386/microvm.h"
340ebf007dSSergio Lopez #include "hw/i386/x86.h"
350ebf007dSSergio Lopez #include "hw/i386/pc.h"
360ebf007dSSergio Lopez #include "target/i386/cpu.h"
37*852c27e2SPaolo Bonzini #include "hw/intc/i8259.h"
380ebf007dSSergio Lopez #include "hw/timer/i8254.h"
39673652a7SPaolo Bonzini #include "hw/rtc/mc146818rtc.h"
400ebf007dSSergio Lopez #include "hw/char/serial.h"
410ebf007dSSergio Lopez #include "hw/i386/topology.h"
420ebf007dSSergio Lopez #include "hw/i386/e820_memory_layout.h"
430ebf007dSSergio Lopez #include "hw/i386/fw_cfg.h"
440ebf007dSSergio Lopez #include "hw/virtio/virtio-mmio.h"
450ebf007dSSergio Lopez 
460ebf007dSSergio Lopez #include "cpu.h"
470ebf007dSSergio Lopez #include "elf.h"
480ebf007dSSergio Lopez #include "kvm_i386.h"
490ebf007dSSergio Lopez #include "hw/xen/start_info.h"
500ebf007dSSergio Lopez 
510ebf007dSSergio Lopez #define MICROVM_BIOS_FILENAME "bios-microvm.bin"
520ebf007dSSergio Lopez 
530ebf007dSSergio Lopez static void microvm_set_rtc(MicrovmMachineState *mms, ISADevice *s)
540ebf007dSSergio Lopez {
550ebf007dSSergio Lopez     X86MachineState *x86ms = X86_MACHINE(mms);
560ebf007dSSergio Lopez     int val;
570ebf007dSSergio Lopez 
580ebf007dSSergio Lopez     val = MIN(x86ms->below_4g_mem_size / KiB, 640);
590ebf007dSSergio Lopez     rtc_set_memory(s, 0x15, val);
600ebf007dSSergio Lopez     rtc_set_memory(s, 0x16, val >> 8);
610ebf007dSSergio Lopez     /* extended memory (next 64MiB) */
620ebf007dSSergio Lopez     if (x86ms->below_4g_mem_size > 1 * MiB) {
630ebf007dSSergio Lopez         val = (x86ms->below_4g_mem_size - 1 * MiB) / KiB;
640ebf007dSSergio Lopez     } else {
650ebf007dSSergio Lopez         val = 0;
660ebf007dSSergio Lopez     }
670ebf007dSSergio Lopez     if (val > 65535) {
680ebf007dSSergio Lopez         val = 65535;
690ebf007dSSergio Lopez     }
700ebf007dSSergio Lopez     rtc_set_memory(s, 0x17, val);
710ebf007dSSergio Lopez     rtc_set_memory(s, 0x18, val >> 8);
720ebf007dSSergio Lopez     rtc_set_memory(s, 0x30, val);
730ebf007dSSergio Lopez     rtc_set_memory(s, 0x31, val >> 8);
740ebf007dSSergio Lopez     /* memory between 16MiB and 4GiB */
750ebf007dSSergio Lopez     if (x86ms->below_4g_mem_size > 16 * MiB) {
760ebf007dSSergio Lopez         val = (x86ms->below_4g_mem_size - 16 * MiB) / (64 * KiB);
770ebf007dSSergio Lopez     } else {
780ebf007dSSergio Lopez         val = 0;
790ebf007dSSergio Lopez     }
800ebf007dSSergio Lopez     if (val > 65535) {
810ebf007dSSergio Lopez         val = 65535;
820ebf007dSSergio Lopez     }
830ebf007dSSergio Lopez     rtc_set_memory(s, 0x34, val);
840ebf007dSSergio Lopez     rtc_set_memory(s, 0x35, val >> 8);
850ebf007dSSergio Lopez     /* memory above 4GiB */
860ebf007dSSergio Lopez     val = x86ms->above_4g_mem_size / 65536;
870ebf007dSSergio Lopez     rtc_set_memory(s, 0x5b, val);
880ebf007dSSergio Lopez     rtc_set_memory(s, 0x5c, val >> 8);
890ebf007dSSergio Lopez     rtc_set_memory(s, 0x5d, val >> 16);
900ebf007dSSergio Lopez }
910ebf007dSSergio Lopez 
920ebf007dSSergio Lopez static void microvm_gsi_handler(void *opaque, int n, int level)
930ebf007dSSergio Lopez {
940ebf007dSSergio Lopez     GSIState *s = opaque;
950ebf007dSSergio Lopez 
960ebf007dSSergio Lopez     qemu_set_irq(s->ioapic_irq[n], level);
970ebf007dSSergio Lopez }
980ebf007dSSergio Lopez 
990ebf007dSSergio Lopez static void microvm_devices_init(MicrovmMachineState *mms)
1000ebf007dSSergio Lopez {
1010ebf007dSSergio Lopez     X86MachineState *x86ms = X86_MACHINE(mms);
1020ebf007dSSergio Lopez     ISABus *isa_bus;
1030ebf007dSSergio Lopez     ISADevice *rtc_state;
1040ebf007dSSergio Lopez     GSIState *gsi_state;
1050ebf007dSSergio Lopez     int i;
1060ebf007dSSergio Lopez 
1070ebf007dSSergio Lopez     /* Core components */
1080ebf007dSSergio Lopez 
1090ebf007dSSergio Lopez     gsi_state = g_malloc0(sizeof(*gsi_state));
1100ebf007dSSergio Lopez     if (mms->pic == ON_OFF_AUTO_ON || mms->pic == ON_OFF_AUTO_AUTO) {
1110ebf007dSSergio Lopez         x86ms->gsi = qemu_allocate_irqs(gsi_handler, gsi_state, GSI_NUM_PINS);
1120ebf007dSSergio Lopez     } else {
1130ebf007dSSergio Lopez         x86ms->gsi = qemu_allocate_irqs(microvm_gsi_handler,
1140ebf007dSSergio Lopez                                         gsi_state, GSI_NUM_PINS);
1150ebf007dSSergio Lopez     }
1160ebf007dSSergio Lopez 
1170ebf007dSSergio Lopez     isa_bus = isa_bus_new(NULL, get_system_memory(), get_system_io(),
1180ebf007dSSergio Lopez                           &error_abort);
1190ebf007dSSergio Lopez     isa_bus_irqs(isa_bus, x86ms->gsi);
1200ebf007dSSergio Lopez 
1210ebf007dSSergio Lopez     ioapic_init_gsi(gsi_state, "machine");
1220ebf007dSSergio Lopez 
1230ebf007dSSergio Lopez     kvmclock_create();
1240ebf007dSSergio Lopez 
1250ebf007dSSergio Lopez     for (i = 0; i < VIRTIO_NUM_TRANSPORTS; i++) {
1260ebf007dSSergio Lopez         sysbus_create_simple("virtio-mmio",
1270ebf007dSSergio Lopez                              VIRTIO_MMIO_BASE + i * 512,
1280ebf007dSSergio Lopez                              x86ms->gsi[VIRTIO_IRQ_BASE + i]);
1290ebf007dSSergio Lopez     }
1300ebf007dSSergio Lopez 
1310ebf007dSSergio Lopez     /* Optional and legacy devices */
1320ebf007dSSergio Lopez 
1330ebf007dSSergio Lopez     if (mms->pic == ON_OFF_AUTO_ON || mms->pic == ON_OFF_AUTO_AUTO) {
1340ebf007dSSergio Lopez         qemu_irq *i8259;
1350ebf007dSSergio Lopez 
1360ebf007dSSergio Lopez         i8259 = i8259_init(isa_bus, pc_allocate_cpu_irq());
1370ebf007dSSergio Lopez         for (i = 0; i < ISA_NUM_IRQS; i++) {
1380ebf007dSSergio Lopez             gsi_state->i8259_irq[i] = i8259[i];
1390ebf007dSSergio Lopez         }
1400ebf007dSSergio Lopez         g_free(i8259);
1410ebf007dSSergio Lopez     }
1420ebf007dSSergio Lopez 
1430ebf007dSSergio Lopez     if (mms->pit == ON_OFF_AUTO_ON || mms->pit == ON_OFF_AUTO_AUTO) {
1440ebf007dSSergio Lopez         if (kvm_pit_in_kernel()) {
1450ebf007dSSergio Lopez             kvm_pit_init(isa_bus, 0x40);
1460ebf007dSSergio Lopez         } else {
1470ebf007dSSergio Lopez             i8254_pit_init(isa_bus, 0x40, 0, NULL);
1480ebf007dSSergio Lopez         }
1490ebf007dSSergio Lopez     }
1500ebf007dSSergio Lopez 
1510ebf007dSSergio Lopez     if (mms->rtc == ON_OFF_AUTO_ON ||
1520ebf007dSSergio Lopez         (mms->rtc == ON_OFF_AUTO_AUTO && !kvm_enabled())) {
1530ebf007dSSergio Lopez         rtc_state = mc146818_rtc_init(isa_bus, 2000, NULL);
1540ebf007dSSergio Lopez         microvm_set_rtc(mms, rtc_state);
1550ebf007dSSergio Lopez     }
1560ebf007dSSergio Lopez 
1570ebf007dSSergio Lopez     if (mms->isa_serial) {
1580ebf007dSSergio Lopez         serial_hds_isa_init(isa_bus, 0, 1);
1590ebf007dSSergio Lopez     }
1600ebf007dSSergio Lopez 
1610ebf007dSSergio Lopez     if (bios_name == NULL) {
1620ebf007dSSergio Lopez         bios_name = MICROVM_BIOS_FILENAME;
1630ebf007dSSergio Lopez     }
1640ebf007dSSergio Lopez     x86_bios_rom_init(get_system_memory(), true);
1650ebf007dSSergio Lopez }
1660ebf007dSSergio Lopez 
1670ebf007dSSergio Lopez static void microvm_memory_init(MicrovmMachineState *mms)
1680ebf007dSSergio Lopez {
1690ebf007dSSergio Lopez     MachineState *machine = MACHINE(mms);
1700ebf007dSSergio Lopez     X86MachineState *x86ms = X86_MACHINE(mms);
1710ebf007dSSergio Lopez     MemoryRegion *ram, *ram_below_4g, *ram_above_4g;
1720ebf007dSSergio Lopez     MemoryRegion *system_memory = get_system_memory();
1730ebf007dSSergio Lopez     FWCfgState *fw_cfg;
1740ebf007dSSergio Lopez     ram_addr_t lowmem;
1750ebf007dSSergio Lopez     int i;
1760ebf007dSSergio Lopez 
1770ebf007dSSergio Lopez     /*
1780ebf007dSSergio Lopez      * Check whether RAM fits below 4G (leaving 1/2 GByte for IO memory
1790ebf007dSSergio Lopez      * and 256 Mbytes for PCI Express Enhanced Configuration Access Mapping
1800ebf007dSSergio Lopez      * also known as MMCFG).
1810ebf007dSSergio Lopez      * If it doesn't, we need to split it in chunks below and above 4G.
1820ebf007dSSergio Lopez      * In any case, try to make sure that guest addresses aligned at
1830ebf007dSSergio Lopez      * 1G boundaries get mapped to host addresses aligned at 1G boundaries.
1840ebf007dSSergio Lopez      */
1850ebf007dSSergio Lopez     if (machine->ram_size >= 0xb0000000) {
1860ebf007dSSergio Lopez         lowmem = 0x80000000;
1870ebf007dSSergio Lopez     } else {
1880ebf007dSSergio Lopez         lowmem = 0xb0000000;
1890ebf007dSSergio Lopez     }
1900ebf007dSSergio Lopez 
1910ebf007dSSergio Lopez     /*
1920ebf007dSSergio Lopez      * Handle the machine opt max-ram-below-4g.  It is basically doing
1930ebf007dSSergio Lopez      * min(qemu limit, user limit).
1940ebf007dSSergio Lopez      */
1950ebf007dSSergio Lopez     if (!x86ms->max_ram_below_4g) {
1960ebf007dSSergio Lopez         x86ms->max_ram_below_4g = 4 * GiB;
1970ebf007dSSergio Lopez     }
1980ebf007dSSergio Lopez     if (lowmem > x86ms->max_ram_below_4g) {
1990ebf007dSSergio Lopez         lowmem = x86ms->max_ram_below_4g;
2000ebf007dSSergio Lopez         if (machine->ram_size - lowmem > lowmem &&
2010ebf007dSSergio Lopez             lowmem & (1 * GiB - 1)) {
2020ebf007dSSergio Lopez             warn_report("There is possibly poor performance as the ram size "
2030ebf007dSSergio Lopez                         " (0x%" PRIx64 ") is more then twice the size of"
2040ebf007dSSergio Lopez                         " max-ram-below-4g (%"PRIu64") and"
2050ebf007dSSergio Lopez                         " max-ram-below-4g is not a multiple of 1G.",
2060ebf007dSSergio Lopez                         (uint64_t)machine->ram_size, x86ms->max_ram_below_4g);
2070ebf007dSSergio Lopez         }
2080ebf007dSSergio Lopez     }
2090ebf007dSSergio Lopez 
2100ebf007dSSergio Lopez     if (machine->ram_size > lowmem) {
2110ebf007dSSergio Lopez         x86ms->above_4g_mem_size = machine->ram_size - lowmem;
2120ebf007dSSergio Lopez         x86ms->below_4g_mem_size = lowmem;
2130ebf007dSSergio Lopez     } else {
2140ebf007dSSergio Lopez         x86ms->above_4g_mem_size = 0;
2150ebf007dSSergio Lopez         x86ms->below_4g_mem_size = machine->ram_size;
2160ebf007dSSergio Lopez     }
2170ebf007dSSergio Lopez 
2180ebf007dSSergio Lopez     ram = g_malloc(sizeof(*ram));
2190ebf007dSSergio Lopez     memory_region_allocate_system_memory(ram, NULL, "microvm.ram",
2200ebf007dSSergio Lopez                                          machine->ram_size);
2210ebf007dSSergio Lopez 
2220ebf007dSSergio Lopez     ram_below_4g = g_malloc(sizeof(*ram_below_4g));
2230ebf007dSSergio Lopez     memory_region_init_alias(ram_below_4g, NULL, "ram-below-4g", ram,
2240ebf007dSSergio Lopez                              0, x86ms->below_4g_mem_size);
2250ebf007dSSergio Lopez     memory_region_add_subregion(system_memory, 0, ram_below_4g);
2260ebf007dSSergio Lopez 
2270ebf007dSSergio Lopez     e820_add_entry(0, x86ms->below_4g_mem_size, E820_RAM);
2280ebf007dSSergio Lopez 
2290ebf007dSSergio Lopez     if (x86ms->above_4g_mem_size > 0) {
2300ebf007dSSergio Lopez         ram_above_4g = g_malloc(sizeof(*ram_above_4g));
2310ebf007dSSergio Lopez         memory_region_init_alias(ram_above_4g, NULL, "ram-above-4g", ram,
2320ebf007dSSergio Lopez                                  x86ms->below_4g_mem_size,
2330ebf007dSSergio Lopez                                  x86ms->above_4g_mem_size);
2340ebf007dSSergio Lopez         memory_region_add_subregion(system_memory, 0x100000000ULL,
2350ebf007dSSergio Lopez                                     ram_above_4g);
2360ebf007dSSergio Lopez         e820_add_entry(0x100000000ULL, x86ms->above_4g_mem_size, E820_RAM);
2370ebf007dSSergio Lopez     }
2380ebf007dSSergio Lopez 
2390ebf007dSSergio Lopez     fw_cfg = fw_cfg_init_io_dma(FW_CFG_IO_BASE, FW_CFG_IO_BASE + 4,
2400ebf007dSSergio Lopez                                 &address_space_memory);
2410ebf007dSSergio Lopez 
2420ebf007dSSergio Lopez     fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, machine->smp.cpus);
2430ebf007dSSergio Lopez     fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, machine->smp.max_cpus);
2440ebf007dSSergio Lopez     fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)machine->ram_size);
2450ebf007dSSergio Lopez     fw_cfg_add_i32(fw_cfg, FW_CFG_IRQ0_OVERRIDE, kvm_allows_irq0_override());
2460ebf007dSSergio Lopez     fw_cfg_add_bytes(fw_cfg, FW_CFG_E820_TABLE,
2470ebf007dSSergio Lopez                      &e820_reserve, sizeof(e820_reserve));
2480ebf007dSSergio Lopez     fw_cfg_add_file(fw_cfg, "etc/e820", e820_table,
2490ebf007dSSergio Lopez                     sizeof(struct e820_entry) * e820_get_num_entries());
2500ebf007dSSergio Lopez 
2510ebf007dSSergio Lopez     rom_set_fw(fw_cfg);
2520ebf007dSSergio Lopez 
2530ebf007dSSergio Lopez     if (machine->kernel_filename != NULL) {
2540ebf007dSSergio Lopez         x86_load_linux(x86ms, fw_cfg, 0, true, true);
2550ebf007dSSergio Lopez     }
2560ebf007dSSergio Lopez 
2570ebf007dSSergio Lopez     if (mms->option_roms) {
2580ebf007dSSergio Lopez         for (i = 0; i < nb_option_roms; i++) {
2590ebf007dSSergio Lopez             rom_add_option(option_rom[i].name, option_rom[i].bootindex);
2600ebf007dSSergio Lopez         }
2610ebf007dSSergio Lopez     }
2620ebf007dSSergio Lopez 
2630ebf007dSSergio Lopez     x86ms->fw_cfg = fw_cfg;
2640ebf007dSSergio Lopez     x86ms->ioapic_as = &address_space_memory;
2650ebf007dSSergio Lopez }
2660ebf007dSSergio Lopez 
2670ebf007dSSergio Lopez static gchar *microvm_get_mmio_cmdline(gchar *name)
2680ebf007dSSergio Lopez {
2690ebf007dSSergio Lopez     gchar *cmdline;
2700ebf007dSSergio Lopez     gchar *separator;
2710ebf007dSSergio Lopez     long int index;
2720ebf007dSSergio Lopez     int ret;
2730ebf007dSSergio Lopez 
2740ebf007dSSergio Lopez     separator = g_strrstr(name, ".");
2750ebf007dSSergio Lopez     if (!separator) {
2760ebf007dSSergio Lopez         return NULL;
2770ebf007dSSergio Lopez     }
2780ebf007dSSergio Lopez 
2790ebf007dSSergio Lopez     if (qemu_strtol(separator + 1, NULL, 10, &index) != 0) {
2800ebf007dSSergio Lopez         return NULL;
2810ebf007dSSergio Lopez     }
2820ebf007dSSergio Lopez 
2830ebf007dSSergio Lopez     cmdline = g_malloc0(VIRTIO_CMDLINE_MAXLEN);
2840ebf007dSSergio Lopez     ret = g_snprintf(cmdline, VIRTIO_CMDLINE_MAXLEN,
2850ebf007dSSergio Lopez                      " virtio_mmio.device=512@0x%lx:%ld",
2860ebf007dSSergio Lopez                      VIRTIO_MMIO_BASE + index * 512,
2870ebf007dSSergio Lopez                      VIRTIO_IRQ_BASE + index);
2880ebf007dSSergio Lopez     if (ret < 0 || ret >= VIRTIO_CMDLINE_MAXLEN) {
2890ebf007dSSergio Lopez         g_free(cmdline);
2900ebf007dSSergio Lopez         return NULL;
2910ebf007dSSergio Lopez     }
2920ebf007dSSergio Lopez 
2930ebf007dSSergio Lopez     return cmdline;
2940ebf007dSSergio Lopez }
2950ebf007dSSergio Lopez 
2960ebf007dSSergio Lopez static void microvm_fix_kernel_cmdline(MachineState *machine)
2970ebf007dSSergio Lopez {
2980ebf007dSSergio Lopez     X86MachineState *x86ms = X86_MACHINE(machine);
2990ebf007dSSergio Lopez     BusState *bus;
3000ebf007dSSergio Lopez     BusChild *kid;
3010ebf007dSSergio Lopez     char *cmdline;
3020ebf007dSSergio Lopez 
3030ebf007dSSergio Lopez     /*
3040ebf007dSSergio Lopez      * Find MMIO transports with attached devices, and add them to the kernel
3050ebf007dSSergio Lopez      * command line.
3060ebf007dSSergio Lopez      *
3070ebf007dSSergio Lopez      * Yes, this is a hack, but one that heavily improves the UX without
3080ebf007dSSergio Lopez      * introducing any significant issues.
3090ebf007dSSergio Lopez      */
3100ebf007dSSergio Lopez     cmdline = g_strdup(machine->kernel_cmdline);
3110ebf007dSSergio Lopez     bus = sysbus_get_default();
3120ebf007dSSergio Lopez     QTAILQ_FOREACH(kid, &bus->children, sibling) {
3130ebf007dSSergio Lopez         DeviceState *dev = kid->child;
3140ebf007dSSergio Lopez         ObjectClass *class = object_get_class(OBJECT(dev));
3150ebf007dSSergio Lopez 
3160ebf007dSSergio Lopez         if (class == object_class_by_name(TYPE_VIRTIO_MMIO)) {
3170ebf007dSSergio Lopez             VirtIOMMIOProxy *mmio = VIRTIO_MMIO(OBJECT(dev));
3180ebf007dSSergio Lopez             VirtioBusState *mmio_virtio_bus = &mmio->bus;
3190ebf007dSSergio Lopez             BusState *mmio_bus = &mmio_virtio_bus->parent_obj;
3200ebf007dSSergio Lopez 
3210ebf007dSSergio Lopez             if (!QTAILQ_EMPTY(&mmio_bus->children)) {
3220ebf007dSSergio Lopez                 gchar *mmio_cmdline = microvm_get_mmio_cmdline(mmio_bus->name);
3230ebf007dSSergio Lopez                 if (mmio_cmdline) {
3240ebf007dSSergio Lopez                     char *newcmd = g_strjoin(NULL, cmdline, mmio_cmdline, NULL);
3250ebf007dSSergio Lopez                     g_free(mmio_cmdline);
3260ebf007dSSergio Lopez                     g_free(cmdline);
3270ebf007dSSergio Lopez                     cmdline = newcmd;
3280ebf007dSSergio Lopez                 }
3290ebf007dSSergio Lopez             }
3300ebf007dSSergio Lopez         }
3310ebf007dSSergio Lopez     }
3320ebf007dSSergio Lopez 
3330ebf007dSSergio Lopez     fw_cfg_modify_i32(x86ms->fw_cfg, FW_CFG_CMDLINE_SIZE, strlen(cmdline) + 1);
3340ebf007dSSergio Lopez     fw_cfg_modify_string(x86ms->fw_cfg, FW_CFG_CMDLINE_DATA, cmdline);
335c3157b74SSergio Lopez 
336c3157b74SSergio Lopez     g_free(cmdline);
3370ebf007dSSergio Lopez }
3380ebf007dSSergio Lopez 
3390ebf007dSSergio Lopez static void microvm_machine_state_init(MachineState *machine)
3400ebf007dSSergio Lopez {
3410ebf007dSSergio Lopez     MicrovmMachineState *mms = MICROVM_MACHINE(machine);
3420ebf007dSSergio Lopez     X86MachineState *x86ms = X86_MACHINE(machine);
3430ebf007dSSergio Lopez     Error *local_err = NULL;
3440ebf007dSSergio Lopez 
3450ebf007dSSergio Lopez     microvm_memory_init(mms);
3460ebf007dSSergio Lopez 
3470ebf007dSSergio Lopez     x86_cpus_init(x86ms, CPU_VERSION_LATEST);
3480ebf007dSSergio Lopez     if (local_err) {
3490ebf007dSSergio Lopez         error_report_err(local_err);
3500ebf007dSSergio Lopez         exit(1);
3510ebf007dSSergio Lopez     }
3520ebf007dSSergio Lopez 
3530ebf007dSSergio Lopez     microvm_devices_init(mms);
3540ebf007dSSergio Lopez }
3550ebf007dSSergio Lopez 
3560ebf007dSSergio Lopez static void microvm_machine_reset(MachineState *machine)
3570ebf007dSSergio Lopez {
3580ebf007dSSergio Lopez     MicrovmMachineState *mms = MICROVM_MACHINE(machine);
3590ebf007dSSergio Lopez     CPUState *cs;
3600ebf007dSSergio Lopez     X86CPU *cpu;
3610ebf007dSSergio Lopez 
3620ebf007dSSergio Lopez     if (machine->kernel_filename != NULL &&
3630ebf007dSSergio Lopez         mms->auto_kernel_cmdline && !mms->kernel_cmdline_fixed) {
3640ebf007dSSergio Lopez         microvm_fix_kernel_cmdline(machine);
3650ebf007dSSergio Lopez         mms->kernel_cmdline_fixed = true;
3660ebf007dSSergio Lopez     }
3670ebf007dSSergio Lopez 
3680ebf007dSSergio Lopez     qemu_devices_reset();
3690ebf007dSSergio Lopez 
3700ebf007dSSergio Lopez     CPU_FOREACH(cs) {
3710ebf007dSSergio Lopez         cpu = X86_CPU(cs);
3720ebf007dSSergio Lopez 
3730ebf007dSSergio Lopez         if (cpu->apic_state) {
3740ebf007dSSergio Lopez             device_reset(cpu->apic_state);
3750ebf007dSSergio Lopez         }
3760ebf007dSSergio Lopez     }
3770ebf007dSSergio Lopez }
3780ebf007dSSergio Lopez 
3790ebf007dSSergio Lopez static void microvm_machine_get_pic(Object *obj, Visitor *v, const char *name,
3800ebf007dSSergio Lopez                                     void *opaque, Error **errp)
3810ebf007dSSergio Lopez {
3820ebf007dSSergio Lopez     MicrovmMachineState *mms = MICROVM_MACHINE(obj);
3830ebf007dSSergio Lopez     OnOffAuto pic = mms->pic;
3840ebf007dSSergio Lopez 
3850ebf007dSSergio Lopez     visit_type_OnOffAuto(v, name, &pic, errp);
3860ebf007dSSergio Lopez }
3870ebf007dSSergio Lopez 
3880ebf007dSSergio Lopez static void microvm_machine_set_pic(Object *obj, Visitor *v, const char *name,
3890ebf007dSSergio Lopez                                     void *opaque, Error **errp)
3900ebf007dSSergio Lopez {
3910ebf007dSSergio Lopez     MicrovmMachineState *mms = MICROVM_MACHINE(obj);
3920ebf007dSSergio Lopez 
3930ebf007dSSergio Lopez     visit_type_OnOffAuto(v, name, &mms->pic, errp);
3940ebf007dSSergio Lopez }
3950ebf007dSSergio Lopez 
3960ebf007dSSergio Lopez static void microvm_machine_get_pit(Object *obj, Visitor *v, const char *name,
3970ebf007dSSergio Lopez                                     void *opaque, Error **errp)
3980ebf007dSSergio Lopez {
3990ebf007dSSergio Lopez     MicrovmMachineState *mms = MICROVM_MACHINE(obj);
4000ebf007dSSergio Lopez     OnOffAuto pit = mms->pit;
4010ebf007dSSergio Lopez 
4020ebf007dSSergio Lopez     visit_type_OnOffAuto(v, name, &pit, errp);
4030ebf007dSSergio Lopez }
4040ebf007dSSergio Lopez 
4050ebf007dSSergio Lopez static void microvm_machine_set_pit(Object *obj, Visitor *v, const char *name,
4060ebf007dSSergio Lopez                                     void *opaque, Error **errp)
4070ebf007dSSergio Lopez {
4080ebf007dSSergio Lopez     MicrovmMachineState *mms = MICROVM_MACHINE(obj);
4090ebf007dSSergio Lopez 
4100ebf007dSSergio Lopez     visit_type_OnOffAuto(v, name, &mms->pit, errp);
4110ebf007dSSergio Lopez }
4120ebf007dSSergio Lopez 
4130ebf007dSSergio Lopez static void microvm_machine_get_rtc(Object *obj, Visitor *v, const char *name,
4140ebf007dSSergio Lopez                                     void *opaque, Error **errp)
4150ebf007dSSergio Lopez {
4160ebf007dSSergio Lopez     MicrovmMachineState *mms = MICROVM_MACHINE(obj);
4170ebf007dSSergio Lopez     OnOffAuto rtc = mms->rtc;
4180ebf007dSSergio Lopez 
4190ebf007dSSergio Lopez     visit_type_OnOffAuto(v, name, &rtc, errp);
4200ebf007dSSergio Lopez }
4210ebf007dSSergio Lopez 
4220ebf007dSSergio Lopez static void microvm_machine_set_rtc(Object *obj, Visitor *v, const char *name,
4230ebf007dSSergio Lopez                                     void *opaque, Error **errp)
4240ebf007dSSergio Lopez {
4250ebf007dSSergio Lopez     MicrovmMachineState *mms = MICROVM_MACHINE(obj);
4260ebf007dSSergio Lopez 
4270ebf007dSSergio Lopez     visit_type_OnOffAuto(v, name, &mms->rtc, errp);
4280ebf007dSSergio Lopez }
4290ebf007dSSergio Lopez 
4300ebf007dSSergio Lopez static bool microvm_machine_get_isa_serial(Object *obj, Error **errp)
4310ebf007dSSergio Lopez {
4320ebf007dSSergio Lopez     MicrovmMachineState *mms = MICROVM_MACHINE(obj);
4330ebf007dSSergio Lopez 
4340ebf007dSSergio Lopez     return mms->isa_serial;
4350ebf007dSSergio Lopez }
4360ebf007dSSergio Lopez 
4370ebf007dSSergio Lopez static void microvm_machine_set_isa_serial(Object *obj, bool value,
4380ebf007dSSergio Lopez                                            Error **errp)
4390ebf007dSSergio Lopez {
4400ebf007dSSergio Lopez     MicrovmMachineState *mms = MICROVM_MACHINE(obj);
4410ebf007dSSergio Lopez 
4420ebf007dSSergio Lopez     mms->isa_serial = value;
4430ebf007dSSergio Lopez }
4440ebf007dSSergio Lopez 
4450ebf007dSSergio Lopez static bool microvm_machine_get_option_roms(Object *obj, Error **errp)
4460ebf007dSSergio Lopez {
4470ebf007dSSergio Lopez     MicrovmMachineState *mms = MICROVM_MACHINE(obj);
4480ebf007dSSergio Lopez 
4490ebf007dSSergio Lopez     return mms->option_roms;
4500ebf007dSSergio Lopez }
4510ebf007dSSergio Lopez 
4520ebf007dSSergio Lopez static void microvm_machine_set_option_roms(Object *obj, bool value,
4530ebf007dSSergio Lopez                                             Error **errp)
4540ebf007dSSergio Lopez {
4550ebf007dSSergio Lopez     MicrovmMachineState *mms = MICROVM_MACHINE(obj);
4560ebf007dSSergio Lopez 
4570ebf007dSSergio Lopez     mms->option_roms = value;
4580ebf007dSSergio Lopez }
4590ebf007dSSergio Lopez 
4600ebf007dSSergio Lopez static bool microvm_machine_get_auto_kernel_cmdline(Object *obj, Error **errp)
4610ebf007dSSergio Lopez {
4620ebf007dSSergio Lopez     MicrovmMachineState *mms = MICROVM_MACHINE(obj);
4630ebf007dSSergio Lopez 
4640ebf007dSSergio Lopez     return mms->auto_kernel_cmdline;
4650ebf007dSSergio Lopez }
4660ebf007dSSergio Lopez 
4670ebf007dSSergio Lopez static void microvm_machine_set_auto_kernel_cmdline(Object *obj, bool value,
4680ebf007dSSergio Lopez                                                     Error **errp)
4690ebf007dSSergio Lopez {
4700ebf007dSSergio Lopez     MicrovmMachineState *mms = MICROVM_MACHINE(obj);
4710ebf007dSSergio Lopez 
4720ebf007dSSergio Lopez     mms->auto_kernel_cmdline = value;
4730ebf007dSSergio Lopez }
4740ebf007dSSergio Lopez 
4750ebf007dSSergio Lopez static void microvm_machine_initfn(Object *obj)
4760ebf007dSSergio Lopez {
4770ebf007dSSergio Lopez     MicrovmMachineState *mms = MICROVM_MACHINE(obj);
4780ebf007dSSergio Lopez 
4790ebf007dSSergio Lopez     /* Configuration */
4800ebf007dSSergio Lopez     mms->pic = ON_OFF_AUTO_AUTO;
4810ebf007dSSergio Lopez     mms->pit = ON_OFF_AUTO_AUTO;
4820ebf007dSSergio Lopez     mms->rtc = ON_OFF_AUTO_AUTO;
4830ebf007dSSergio Lopez     mms->isa_serial = true;
4840ebf007dSSergio Lopez     mms->option_roms = true;
4850ebf007dSSergio Lopez     mms->auto_kernel_cmdline = true;
4860ebf007dSSergio Lopez 
4870ebf007dSSergio Lopez     /* State */
4880ebf007dSSergio Lopez     mms->kernel_cmdline_fixed = false;
4890ebf007dSSergio Lopez }
4900ebf007dSSergio Lopez 
4910ebf007dSSergio Lopez static void microvm_class_init(ObjectClass *oc, void *data)
4920ebf007dSSergio Lopez {
4930ebf007dSSergio Lopez     MachineClass *mc = MACHINE_CLASS(oc);
4940ebf007dSSergio Lopez 
4950ebf007dSSergio Lopez     mc->init = microvm_machine_state_init;
4960ebf007dSSergio Lopez 
4970ebf007dSSergio Lopez     mc->family = "microvm_i386";
4980ebf007dSSergio Lopez     mc->desc = "microvm (i386)";
4990ebf007dSSergio Lopez     mc->units_per_default_bus = 1;
5000ebf007dSSergio Lopez     mc->no_floppy = 1;
5010ebf007dSSergio Lopez     mc->max_cpus = 288;
5020ebf007dSSergio Lopez     mc->has_hotpluggable_cpus = false;
5030ebf007dSSergio Lopez     mc->auto_enable_numa_with_memhp = false;
5040ebf007dSSergio Lopez     mc->default_cpu_type = TARGET_DEFAULT_CPU_TYPE;
5050ebf007dSSergio Lopez     mc->nvdimm_supported = false;
5060ebf007dSSergio Lopez 
5070ebf007dSSergio Lopez     /* Avoid relying too much on kernel components */
5080ebf007dSSergio Lopez     mc->default_kernel_irqchip_split = true;
5090ebf007dSSergio Lopez 
5100ebf007dSSergio Lopez     /* Machine class handlers */
5110ebf007dSSergio Lopez     mc->reset = microvm_machine_reset;
5120ebf007dSSergio Lopez 
5130ebf007dSSergio Lopez     object_class_property_add(oc, MICROVM_MACHINE_PIC, "OnOffAuto",
5140ebf007dSSergio Lopez                               microvm_machine_get_pic,
5150ebf007dSSergio Lopez                               microvm_machine_set_pic,
5160ebf007dSSergio Lopez                               NULL, NULL, &error_abort);
5170ebf007dSSergio Lopez     object_class_property_set_description(oc, MICROVM_MACHINE_PIC,
5180ebf007dSSergio Lopez         "Enable i8259 PIC", &error_abort);
5190ebf007dSSergio Lopez 
5200ebf007dSSergio Lopez     object_class_property_add(oc, MICROVM_MACHINE_PIT, "OnOffAuto",
5210ebf007dSSergio Lopez                               microvm_machine_get_pit,
5220ebf007dSSergio Lopez                               microvm_machine_set_pit,
5230ebf007dSSergio Lopez                               NULL, NULL, &error_abort);
5240ebf007dSSergio Lopez     object_class_property_set_description(oc, MICROVM_MACHINE_PIT,
5250ebf007dSSergio Lopez         "Enable i8254 PIT", &error_abort);
5260ebf007dSSergio Lopez 
5270ebf007dSSergio Lopez     object_class_property_add(oc, MICROVM_MACHINE_RTC, "OnOffAuto",
5280ebf007dSSergio Lopez                               microvm_machine_get_rtc,
5290ebf007dSSergio Lopez                               microvm_machine_set_rtc,
5300ebf007dSSergio Lopez                               NULL, NULL, &error_abort);
5310ebf007dSSergio Lopez     object_class_property_set_description(oc, MICROVM_MACHINE_RTC,
5320ebf007dSSergio Lopez         "Enable MC146818 RTC", &error_abort);
5330ebf007dSSergio Lopez 
5340ebf007dSSergio Lopez     object_class_property_add_bool(oc, MICROVM_MACHINE_ISA_SERIAL,
5350ebf007dSSergio Lopez                                    microvm_machine_get_isa_serial,
5360ebf007dSSergio Lopez                                    microvm_machine_set_isa_serial,
5370ebf007dSSergio Lopez                                    &error_abort);
5380ebf007dSSergio Lopez     object_class_property_set_description(oc, MICROVM_MACHINE_ISA_SERIAL,
5390ebf007dSSergio Lopez         "Set off to disable the instantiation an ISA serial port",
5400ebf007dSSergio Lopez         &error_abort);
5410ebf007dSSergio Lopez 
5420ebf007dSSergio Lopez     object_class_property_add_bool(oc, MICROVM_MACHINE_OPTION_ROMS,
5430ebf007dSSergio Lopez                                    microvm_machine_get_option_roms,
5440ebf007dSSergio Lopez                                    microvm_machine_set_option_roms,
5450ebf007dSSergio Lopez                                    &error_abort);
5460ebf007dSSergio Lopez     object_class_property_set_description(oc, MICROVM_MACHINE_OPTION_ROMS,
5470ebf007dSSergio Lopez         "Set off to disable loading option ROMs", &error_abort);
5480ebf007dSSergio Lopez 
5490ebf007dSSergio Lopez     object_class_property_add_bool(oc, MICROVM_MACHINE_AUTO_KERNEL_CMDLINE,
5500ebf007dSSergio Lopez                                    microvm_machine_get_auto_kernel_cmdline,
5510ebf007dSSergio Lopez                                    microvm_machine_set_auto_kernel_cmdline,
5520ebf007dSSergio Lopez                                    &error_abort);
5530ebf007dSSergio Lopez     object_class_property_set_description(oc,
5540ebf007dSSergio Lopez         MICROVM_MACHINE_AUTO_KERNEL_CMDLINE,
5550ebf007dSSergio Lopez         "Set off to disable adding virtio-mmio devices to the kernel cmdline",
5560ebf007dSSergio Lopez         &error_abort);
5570ebf007dSSergio Lopez }
5580ebf007dSSergio Lopez 
5590ebf007dSSergio Lopez static const TypeInfo microvm_machine_info = {
5600ebf007dSSergio Lopez     .name          = TYPE_MICROVM_MACHINE,
5610ebf007dSSergio Lopez     .parent        = TYPE_X86_MACHINE,
5620ebf007dSSergio Lopez     .instance_size = sizeof(MicrovmMachineState),
5630ebf007dSSergio Lopez     .instance_init = microvm_machine_initfn,
5640ebf007dSSergio Lopez     .class_size    = sizeof(MicrovmMachineClass),
5650ebf007dSSergio Lopez     .class_init    = microvm_class_init,
5660ebf007dSSergio Lopez     .interfaces = (InterfaceInfo[]) {
5670ebf007dSSergio Lopez          { }
5680ebf007dSSergio Lopez     },
5690ebf007dSSergio Lopez };
5700ebf007dSSergio Lopez 
5710ebf007dSSergio Lopez static void microvm_machine_init(void)
5720ebf007dSSergio Lopez {
5730ebf007dSSergio Lopez     type_register_static(&microvm_machine_info);
5740ebf007dSSergio Lopez }
5750ebf007dSSergio Lopez type_init(microvm_machine_init);
576