2 * QEMU HPPA hardware system emulator.
3 * Copyright 2018 Helge Deller <deller@gmx.de>
6 #include "qemu/osdep.h"
7 #include "qemu/datadir.h"
10 #include "hw/loader.h"
11 #include "qemu/error-report.h"
12 #include "sysemu/reset.h"
13 #include "sysemu/sysemu.h"
14 #include "sysemu/runstate.h"
15 #include "hw/rtc/mc146818rtc.h"
16 #include "hw/timer/i8254.h"
17 #include "hw/char/serial.h"
18 #include "hw/net/lasi_82596.h"
20 #include "hw/pci-host/dino.h"
22 #include "qemu/units.h"
23 #include "qapi/error.h"
30 #define MIN_SEABIOS_HPPA_VERSION 1 /* require at least this fw version */
32 #define HPA_POWER_BUTTON (FIRMWARE_END - 0x10)
34 static void hppa_powerdown_req(Notifier
*n
, void *opaque
)
36 hwaddr soft_power_reg
= HPA_POWER_BUTTON
;
39 val
= ldl_be_phys(&address_space_memory
, soft_power_reg
);
40 if ((val
>> 8) == 0) {
41 /* immediately shut down when under hardware control */
42 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN
);
46 /* clear bit 31 to indicate that the power switch was pressed. */
48 stl_be_phys(&address_space_memory
, soft_power_reg
, val
);
51 static Notifier hppa_system_powerdown_notifier
= {
52 .notify
= hppa_powerdown_req
56 static ISABus
*hppa_isa_bus(void)
60 MemoryRegion
*isa_region
;
62 isa_region
= g_new(MemoryRegion
, 1);
63 memory_region_init_io(isa_region
, NULL
, &hppa_pci_ignore_ops
,
64 NULL
, "isa-io", 0x800);
65 memory_region_add_subregion(get_system_memory(), IDE_HPA
,
68 isa_bus
= isa_bus_new(NULL
, get_system_memory(), isa_region
,
70 isa_irqs
= i8259_init(isa_bus
,
71 /* qemu_allocate_irq(dino_set_isa_irq, s, 0)); */
73 isa_bus_irqs(isa_bus
, isa_irqs
);
78 static uint64_t cpu_hppa_to_phys(void *opaque
, uint64_t addr
)
80 addr
&= (0x10000000 - 1);
84 static HPPACPU
*cpu
[HPPA_MAX_CPUS
];
85 static uint64_t firmware_entry
;
87 static void fw_cfg_boot_set(void *opaque
, const char *boot_device
,
90 fw_cfg_modify_i16(opaque
, FW_CFG_BOOT_DEVICE
, boot_device
[0]);
93 static FWCfgState
*create_fw_cfg(MachineState
*ms
)
98 fw_cfg
= fw_cfg_init_mem(FW_CFG_IO_BASE
, FW_CFG_IO_BASE
+ 4);
99 fw_cfg_add_i16(fw_cfg
, FW_CFG_NB_CPUS
, ms
->smp
.cpus
);
100 fw_cfg_add_i16(fw_cfg
, FW_CFG_MAX_CPUS
, HPPA_MAX_CPUS
);
101 fw_cfg_add_i64(fw_cfg
, FW_CFG_RAM_SIZE
, ms
->ram_size
);
103 val
= cpu_to_le64(MIN_SEABIOS_HPPA_VERSION
);
104 fw_cfg_add_file(fw_cfg
, "/etc/firmware-min-version",
105 g_memdup(&val
, sizeof(val
)), sizeof(val
));
107 val
= cpu_to_le64(HPPA_TLB_ENTRIES
);
108 fw_cfg_add_file(fw_cfg
, "/etc/cpu/tlb_entries",
109 g_memdup(&val
, sizeof(val
)), sizeof(val
));
111 val
= cpu_to_le64(HPPA_BTLB_ENTRIES
);
112 fw_cfg_add_file(fw_cfg
, "/etc/cpu/btlb_entries",
113 g_memdup(&val
, sizeof(val
)), sizeof(val
));
115 val
= cpu_to_le64(HPA_POWER_BUTTON
);
116 fw_cfg_add_file(fw_cfg
, "/etc/power-button-addr",
117 g_memdup(&val
, sizeof(val
)), sizeof(val
));
119 fw_cfg_add_i16(fw_cfg
, FW_CFG_BOOT_DEVICE
, ms
->boot_order
[0]);
120 qemu_register_boot_set(fw_cfg_boot_set
, fw_cfg
);
125 static DinoState
*dino_init(MemoryRegion
*addr_space
)
129 dev
= qdev_new(TYPE_DINO_PCI_HOST_BRIDGE
);
130 object_property_set_link(OBJECT(dev
), "memory-as", OBJECT(addr_space
),
132 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev
), &error_fatal
);
134 return DINO_PCI_HOST_BRIDGE(dev
);
137 static void machine_hppa_init(MachineState
*machine
)
139 const char *kernel_filename
= machine
->kernel_filename
;
140 const char *kernel_cmdline
= machine
->kernel_cmdline
;
141 const char *initrd_filename
= machine
->initrd_filename
;
142 DeviceState
*dev
, *dino_dev
, *lasi_dev
;
145 char *firmware_filename
;
146 uint64_t firmware_low
, firmware_high
;
148 uint64_t kernel_entry
= 0, kernel_low
, kernel_high
;
149 MemoryRegion
*addr_space
= get_system_memory();
150 MemoryRegion
*rom_region
;
151 MemoryRegion
*cpu_region
;
153 unsigned int smp_cpus
= machine
->smp
.cpus
;
157 for (i
= 0; i
< smp_cpus
; i
++) {
158 char *name
= g_strdup_printf("cpu%ld-io-eir", i
);
159 cpu
[i
] = HPPA_CPU(cpu_create(machine
->cpu_type
));
161 cpu_region
= g_new(MemoryRegion
, 1);
162 memory_region_init_io(cpu_region
, OBJECT(cpu
[i
]), &hppa_io_eir_ops
,
164 memory_region_add_subregion(addr_space
, CPU_HPA
+ i
* 0x1000,
169 /* Main memory region. */
170 if (machine
->ram_size
> 3 * GiB
) {
171 error_report("RAM size is currently restricted to 3GB");
174 memory_region_add_subregion_overlap(addr_space
, 0, machine
->ram
, -1);
178 lasi_dev
= lasi_initfn(addr_space
);
179 memory_region_add_subregion(addr_space
, LASI_HPA
,
180 sysbus_mmio_get_region(
181 SYS_BUS_DEVICE(lasi_dev
), 0));
183 /* Init Dino (PCI host bus chip). */
184 dino_dev
= DEVICE(dino_init(addr_space
));
185 memory_region_add_subregion(addr_space
, DINO_HPA
,
186 sysbus_mmio_get_region(
187 SYS_BUS_DEVICE(dino_dev
), 0));
188 pci_bus
= PCI_BUS(qdev_get_child_bus(dino_dev
, "pci"));
191 /* Create ISA bus. */
192 isa_bus
= hppa_isa_bus();
195 /* Realtime clock, used by firmware for PDC_TOD call. */
196 mc146818_rtc_init(isa_bus
, 2000, NULL
);
198 /* Serial code setup. */
200 uint32_t addr
= DINO_UART_HPA
+ 0x800;
201 serial_mm_init(addr_space
, addr
, 0,
202 qdev_get_gpio_in(dino_dev
, DINO_IRQ_RS232INT
),
203 115200, serial_hd(0), DEVICE_BIG_ENDIAN
);
206 /* fw_cfg configuration interface */
207 create_fw_cfg(machine
);
209 /* SCSI disk setup. */
210 dev
= DEVICE(pci_create_simple(pci_bus
, -1, "lsi53c895a"));
211 lsi53c8xx_handle_legacy_cmdline(dev
);
213 /* Graphics setup. */
214 if (machine
->enable_graphics
&& vga_interface_type
!= VGA_NONE
) {
215 dev
= qdev_new("artist");
216 s
= SYS_BUS_DEVICE(dev
);
217 sysbus_realize_and_unref(s
, &error_fatal
);
218 sysbus_mmio_map(s
, 0, LASI_GFX_HPA
);
219 sysbus_mmio_map(s
, 1, ARTIST_FB_ADDR
);
223 for (i
= 0; i
< nb_nics
; i
++) {
224 if (!enable_lasi_lan()) {
225 pci_nic_init_nofail(&nd_table
[i
], pci_bus
, "tulip", NULL
);
229 /* register power switch emulation */
230 qemu_register_powerdown_notifier(&hppa_system_powerdown_notifier
);
232 /* Load firmware. Given that this is not "real" firmware,
233 but one explicitly written for the emulation, we might as
234 well load it directly from an ELF image. */
235 firmware_filename
= qemu_find_file(QEMU_FILE_TYPE_BIOS
,
236 machine
->firmware
?: "hppa-firmware.img");
237 if (firmware_filename
== NULL
) {
238 error_report("no firmware provided");
242 size
= load_elf(firmware_filename
, NULL
, NULL
, NULL
,
243 &firmware_entry
, &firmware_low
, &firmware_high
, NULL
,
244 true, EM_PARISC
, 0, 0);
246 /* Unfortunately, load_elf sign-extends reading elf32. */
247 firmware_entry
= (target_ureg
)firmware_entry
;
248 firmware_low
= (target_ureg
)firmware_low
;
249 firmware_high
= (target_ureg
)firmware_high
;
252 error_report("could not load firmware '%s'", firmware_filename
);
255 qemu_log_mask(CPU_LOG_PAGE
, "Firmware loaded at 0x%08" PRIx64
256 "-0x%08" PRIx64
", entry at 0x%08" PRIx64
".\n",
257 firmware_low
, firmware_high
, firmware_entry
);
258 if (firmware_low
< FIRMWARE_START
|| firmware_high
>= FIRMWARE_END
) {
259 error_report("Firmware overlaps with memory or IO space");
262 g_free(firmware_filename
);
264 rom_region
= g_new(MemoryRegion
, 1);
265 memory_region_init_ram(rom_region
, NULL
, "firmware",
266 (FIRMWARE_END
- FIRMWARE_START
), &error_fatal
);
267 memory_region_add_subregion(addr_space
, FIRMWARE_START
, rom_region
);
270 if (kernel_filename
) {
271 size
= load_elf(kernel_filename
, NULL
, &cpu_hppa_to_phys
,
272 NULL
, &kernel_entry
, &kernel_low
, &kernel_high
, NULL
,
273 true, EM_PARISC
, 0, 0);
275 /* Unfortunately, load_elf sign-extends reading elf32. */
276 kernel_entry
= (target_ureg
) cpu_hppa_to_phys(NULL
, kernel_entry
);
277 kernel_low
= (target_ureg
)kernel_low
;
278 kernel_high
= (target_ureg
)kernel_high
;
281 error_report("could not load kernel '%s'", kernel_filename
);
284 qemu_log_mask(CPU_LOG_PAGE
, "Kernel loaded at 0x%08" PRIx64
285 "-0x%08" PRIx64
", entry at 0x%08" PRIx64
286 ", size %" PRIu64
" kB\n",
287 kernel_low
, kernel_high
, kernel_entry
, size
/ KiB
);
289 if (kernel_cmdline
) {
290 cpu
[0]->env
.gr
[24] = 0x4000;
291 pstrcpy_targphys("cmdline", cpu
[0]->env
.gr
[24],
292 TARGET_PAGE_SIZE
, kernel_cmdline
);
295 if (initrd_filename
) {
296 ram_addr_t initrd_base
;
299 initrd_size
= get_image_size(initrd_filename
);
300 if (initrd_size
< 0) {
301 error_report("could not load initial ram disk '%s'",
306 /* Load the initrd image high in memory.
307 Mirror the algorithm used by palo:
308 (1) Due to sign-extension problems and PDC,
309 put the initrd no higher than 1G.
310 (2) Reserve 64k for stack. */
311 initrd_base
= MIN(machine
->ram_size
, 1 * GiB
);
312 initrd_base
= initrd_base
- 64 * KiB
;
313 initrd_base
= (initrd_base
- initrd_size
) & TARGET_PAGE_MASK
;
315 if (initrd_base
< kernel_high
) {
316 error_report("kernel and initial ram disk too large!");
320 load_image_targphys(initrd_filename
, initrd_base
, initrd_size
);
321 cpu
[0]->env
.gr
[23] = initrd_base
;
322 cpu
[0]->env
.gr
[22] = initrd_base
+ initrd_size
;
327 /* When booting via firmware, tell firmware if we want interactive
328 * mode (kernel_entry=1), and to boot from CD (gr[24]='d')
329 * or hard disc * (gr[24]='c').
331 kernel_entry
= boot_menu
? 1 : 0;
332 cpu
[0]->env
.gr
[24] = machine
->boot_order
[0];
335 /* We jump to the firmware entry routine and pass the
336 * various parameters in registers. After firmware initialization,
337 * firmware will start the Linux kernel with ramdisk and cmdline.
339 cpu
[0]->env
.gr
[26] = machine
->ram_size
;
340 cpu
[0]->env
.gr
[25] = kernel_entry
;
342 /* tell firmware how many SMP CPUs to present in inventory table */
343 cpu
[0]->env
.gr
[21] = smp_cpus
;
345 /* tell firmware fw_cfg port */
346 cpu
[0]->env
.gr
[19] = FW_CFG_IO_BASE
;
349 static void hppa_machine_reset(MachineState
*ms
)
351 unsigned int smp_cpus
= ms
->smp
.cpus
;
354 qemu_devices_reset();
356 /* Start all CPUs at the firmware entry point.
357 * Monarch CPU will initialize firmware, secondary CPUs
358 * will enter a small idle look and wait for rendevouz. */
359 for (i
= 0; i
< smp_cpus
; i
++) {
360 cpu_set_pc(CPU(cpu
[i
]), firmware_entry
);
361 cpu
[i
]->env
.gr
[5] = CPU_HPA
+ i
* 0x1000;
364 /* already initialized by machine_hppa_init()? */
365 if (cpu
[0]->env
.gr
[26] == ms
->ram_size
) {
369 cpu
[0]->env
.gr
[26] = ms
->ram_size
;
370 cpu
[0]->env
.gr
[25] = 0; /* no firmware boot menu */
371 cpu
[0]->env
.gr
[24] = 'c';
372 /* gr22/gr23 unused, no initrd while reboot. */
373 cpu
[0]->env
.gr
[21] = smp_cpus
;
374 /* tell firmware fw_cfg port */
375 cpu
[0]->env
.gr
[19] = FW_CFG_IO_BASE
;
378 static void hppa_nmi(NMIState
*n
, int cpu_index
, Error
**errp
)
383 cpu_interrupt(cs
, CPU_INTERRUPT_NMI
);
387 static void machine_hppa_machine_init(MachineClass
*mc
)
389 mc
->desc
= "HPPA B160L machine";
390 mc
->default_cpu_type
= TYPE_HPPA_CPU
;
391 mc
->init
= machine_hppa_init
;
392 mc
->reset
= hppa_machine_reset
;
393 mc
->block_default_type
= IF_SCSI
;
394 mc
->max_cpus
= HPPA_MAX_CPUS
;
395 mc
->default_cpus
= 1;
396 mc
->is_default
= true;
397 mc
->default_ram_size
= 512 * MiB
;
398 mc
->default_boot_order
= "cd";
399 mc
->default_ram_id
= "ram";
402 static void machine_hppa_machine_init_class_init(ObjectClass
*oc
, void *data
)
404 MachineClass
*mc
= MACHINE_CLASS(oc
);
405 machine_hppa_machine_init(mc
);
407 NMIClass
*nc
= NMI_CLASS(oc
);
408 nc
->nmi_monitor_handler
= hppa_nmi
;
411 static const TypeInfo machine_hppa_machine_init_typeinfo
= {
412 .name
= ("hppa" "-machine"),
414 .class_init
= machine_hppa_machine_init_class_init
,
415 .interfaces
= (InterfaceInfo
[]) {
421 static void machine_hppa_machine_init_register_types(void)
423 type_register_static(&machine_hppa_machine_init_typeinfo
);
426 type_init(machine_hppa_machine_init_register_types
)