2 * QEMU fuloong 2e mini pc support
4 * Copyright (c) 2008 yajin (yajin@vm-kernel.org)
5 * Copyright (c) 2009 chenming (chenming@rdc.faw.com.cn)
6 * Copyright (c) 2010 Huacai Chen (zltjiangshi@gmail.com)
7 * This code is licensed under the GNU GPL v2.
9 * Contributions after 2012-01-13 are licensed under the terms of the
10 * GNU GPL, version 2 or (at your option) any later version.
14 * Fuloong 2e mini pc is based on ICT/ST Loongson 2e CPU (MIPS III like, 800MHz)
15 * https://www.linux-mips.org/wiki/Fuloong_2E
17 * Loongson 2e user manual:
18 * http://www.loongsondeveloper.com/doc/Loongson2EUserGuide.pdf
21 #include "qemu/osdep.h"
22 #include "qemu-common.h"
23 #include "qemu/units.h"
24 #include "qapi/error.h"
27 #include "hw/intc/i8259.h"
28 #include "hw/dma/i8257.h"
29 #include "hw/isa/superio.h"
31 #include "hw/boards.h"
32 #include "hw/i2c/smbus_eeprom.h"
33 #include "hw/block/flash.h"
34 #include "hw/mips/mips.h"
35 #include "hw/mips/cpudevs.h"
36 #include "hw/pci/pci.h"
38 #include "hw/loader.h"
39 #include "hw/ide/pci.h"
41 #include "hw/isa/vt82c686.h"
42 #include "hw/rtc/mc146818rtc.h"
43 #include "hw/timer/i8254.h"
44 #include "exec/address-spaces.h"
45 #include "sysemu/qtest.h"
46 #include "sysemu/reset.h"
47 #include "qemu/error-report.h"
49 #define DEBUG_FULOONG2E_INIT
51 #define ENVP_ADDR 0x80002000l
52 #define ENVP_NB_ENTRIES 16
53 #define ENVP_ENTRY_SIZE 256
55 /* Fuloong 2e has a 512k flash: Winbond W39L040AP70Z */
56 #define BIOS_SIZE (512 * KiB)
60 * PMON is not part of qemu and released with BSD license, anyone
61 * who want to build a pmon binary please first git-clone the source
62 * from the git repository at:
63 * http://www.loongson.cn/support/git/pmon
64 * Then follow the "Compile Guide" available at:
65 * http://dev.lemote.com/code/pmon
68 * 1, don't use the source at http://dev.lemote.com/http_git/pmon.git
69 * 2, use "Bonito2edev" to replace "dir_corresponding_to_your_target_hardware"
70 * in the "Compile Guide".
72 #define FULOONG_BIOSNAME "pmon_2e.bin"
74 /* PCI SLOT in Fuloong 2e */
75 #define FULOONG2E_VIA_SLOT 5
76 #define FULOONG2E_ATI_SLOT 6
77 #define FULOONG2E_RTL8139_SLOT 7
79 static struct _loaderparams
{
81 const char *kernel_filename
;
82 const char *kernel_cmdline
;
83 const char *initrd_filename
;
86 static void GCC_FMT_ATTR(3, 4) prom_set(uint32_t *prom_buf
, int index
,
87 const char *string
, ...)
92 if (index
>= ENVP_NB_ENTRIES
) {
101 table_addr
= sizeof(int32_t) * ENVP_NB_ENTRIES
+ index
* ENVP_ENTRY_SIZE
;
102 prom_buf
[index
] = tswap32(ENVP_ADDR
+ table_addr
);
104 va_start(ap
, string
);
105 vsnprintf((char *)prom_buf
+ table_addr
, ENVP_ENTRY_SIZE
, string
, ap
);
109 static int64_t load_kernel(CPUMIPSState
*env
)
111 int64_t kernel_entry
, kernel_high
, initrd_size
;
114 ram_addr_t initrd_offset
;
118 kernel_size
= load_elf(loaderparams
.kernel_filename
, NULL
,
119 cpu_mips_kseg0_to_phys
, NULL
,
120 (uint64_t *)&kernel_entry
, NULL
,
121 (uint64_t *)&kernel_high
, NULL
,
123 if (kernel_size
< 0) {
124 error_report("could not load kernel '%s': %s",
125 loaderparams
.kernel_filename
,
126 load_elf_strerror(kernel_size
));
133 if (loaderparams
.initrd_filename
) {
134 initrd_size
= get_image_size(loaderparams
.initrd_filename
);
135 if (initrd_size
> 0) {
136 initrd_offset
= ROUND_UP(kernel_high
, INITRD_PAGE_SIZE
);
137 if (initrd_offset
+ initrd_size
> ram_size
) {
138 error_report("memory too small for initial ram disk '%s'",
139 loaderparams
.initrd_filename
);
142 initrd_size
= load_image_targphys(loaderparams
.initrd_filename
,
144 ram_size
- initrd_offset
);
146 if (initrd_size
== (target_ulong
) -1) {
147 error_report("could not load initial ram disk '%s'",
148 loaderparams
.initrd_filename
);
153 /* Setup prom parameters. */
154 prom_size
= ENVP_NB_ENTRIES
* (sizeof(int32_t) + ENVP_ENTRY_SIZE
);
155 prom_buf
= g_malloc(prom_size
);
157 prom_set(prom_buf
, index
++, "%s", loaderparams
.kernel_filename
);
158 if (initrd_size
> 0) {
159 prom_set(prom_buf
, index
++,
160 "rd_start=0x%" PRIx64
" rd_size=%" PRId64
" %s",
161 cpu_mips_phys_to_kseg0(NULL
, initrd_offset
),
162 initrd_size
, loaderparams
.kernel_cmdline
);
164 prom_set(prom_buf
, index
++, "%s", loaderparams
.kernel_cmdline
);
167 /* Setup minimum environment variables */
168 prom_set(prom_buf
, index
++, "busclock=33000000");
169 prom_set(prom_buf
, index
++, "cpuclock=100000000");
170 prom_set(prom_buf
, index
++, "memsize=%"PRIi64
, loaderparams
.ram_size
/ MiB
);
171 prom_set(prom_buf
, index
++, "modetty0=38400n8r");
172 prom_set(prom_buf
, index
++, NULL
);
174 rom_add_blob_fixed("prom", prom_buf
, prom_size
,
175 cpu_mips_kseg0_to_phys(NULL
, ENVP_ADDR
));
181 static void write_bootloader(CPUMIPSState
*env
, uint8_t *base
,
186 /* Small bootloader */
187 p
= (uint32_t *)base
;
190 stl_p(p
++, 0x0bf00010);
192 stl_p(p
++, 0x00000000);
194 /* Second part of the bootloader */
195 p
= (uint32_t *)(base
+ 0x040);
198 stl_p(p
++, 0x3c040000);
200 stl_p(p
++, 0x34840002);
201 /* lui a1, high(ENVP_ADDR) */
202 stl_p(p
++, 0x3c050000 | ((ENVP_ADDR
>> 16) & 0xffff));
203 /* ori a1, a0, low(ENVP_ADDR) */
204 stl_p(p
++, 0x34a50000 | (ENVP_ADDR
& 0xffff));
205 /* lui a2, high(ENVP_ADDR + 8) */
206 stl_p(p
++, 0x3c060000 | (((ENVP_ADDR
+ 8) >> 16) & 0xffff));
207 /* ori a2, a2, low(ENVP_ADDR + 8) */
208 stl_p(p
++, 0x34c60000 | ((ENVP_ADDR
+ 8) & 0xffff));
209 /* lui a3, high(env->ram_size) */
210 stl_p(p
++, 0x3c070000 | (loaderparams
.ram_size
>> 16));
211 /* ori a3, a3, low(env->ram_size) */
212 stl_p(p
++, 0x34e70000 | (loaderparams
.ram_size
& 0xffff));
213 /* lui ra, high(kernel_addr) */
214 stl_p(p
++, 0x3c1f0000 | ((kernel_addr
>> 16) & 0xffff));
215 /* ori ra, ra, low(kernel_addr) */
216 stl_p(p
++, 0x37ff0000 | (kernel_addr
& 0xffff));
218 stl_p(p
++, 0x03e00008);
220 stl_p(p
++, 0x00000000);
223 static void main_cpu_reset(void *opaque
)
225 MIPSCPU
*cpu
= opaque
;
226 CPUMIPSState
*env
= &cpu
->env
;
229 /* TODO: 2E reset stuff */
230 if (loaderparams
.kernel_filename
) {
231 env
->CP0_Status
&= ~((1 << CP0St_BEV
) | (1 << CP0St_ERL
));
235 static void vt82c686b_southbridge_init(PCIBus
*pci_bus
, int slot
, qemu_irq intc
,
236 I2CBus
**i2c_bus
, ISABus
**p_isa_bus
)
242 isa_bus
= vt82c686b_isa_init(pci_bus
, PCI_DEVFN(slot
, 0));
244 *p_isa_bus
= isa_bus
;
245 /* Interrupt controller */
246 /* The 8259 -> IP5 */
247 i8259
= i8259_init(isa_bus
, intc
);
248 isa_bus_irqs(isa_bus
, i8259
);
249 /* init other devices */
250 i8254_pit_init(isa_bus
, 0x40, 0, NULL
);
251 i8257_dma_init(isa_bus
, 0);
253 isa_create_simple(isa_bus
, TYPE_VT82C686B_SUPERIO
);
255 dev
= pci_create_simple(pci_bus
, PCI_DEVFN(slot
, 1), "via-ide");
256 pci_ide_create_devs(dev
);
258 pci_create_simple(pci_bus
, PCI_DEVFN(slot
, 2), "vt82c686b-usb-uhci");
259 pci_create_simple(pci_bus
, PCI_DEVFN(slot
, 3), "vt82c686b-usb-uhci");
261 *i2c_bus
= vt82c686b_pm_init(pci_bus
, PCI_DEVFN(slot
, 4), 0xeee1, NULL
);
264 vt82c686b_ac97_init(pci_bus
, PCI_DEVFN(slot
, 5));
265 vt82c686b_mc97_init(pci_bus
, PCI_DEVFN(slot
, 6));
268 /* Network support */
269 static void network_init(PCIBus
*pci_bus
)
273 for (i
= 0; i
< nb_nics
; i
++) {
274 NICInfo
*nd
= &nd_table
[i
];
275 const char *default_devaddr
= NULL
;
277 if (i
== 0 && (!nd
->model
|| strcmp(nd
->model
, "rtl8139") == 0)) {
278 /* The Fuloong board has a RTL8139 card using PCI SLOT 7 */
279 default_devaddr
= "07";
282 pci_nic_init_nofail(nd
, pci_bus
, "rtl8139", default_devaddr
);
286 static void mips_fuloong2e_init(MachineState
*machine
)
288 const char *kernel_filename
= machine
->kernel_filename
;
289 const char *kernel_cmdline
= machine
->kernel_cmdline
;
290 const char *initrd_filename
= machine
->initrd_filename
;
292 MemoryRegion
*address_space_mem
= get_system_memory();
293 MemoryRegion
*bios
= g_new(MemoryRegion
, 1);
296 int64_t kernel_entry
;
306 cpuclk
= clock_new(OBJECT(machine
), "cpu-refclk");
307 clock_set_hz(cpuclk
, 533080000); /* ~533 MHz */
310 cpu
= mips_cpu_create_with_clock(machine
->cpu_type
, cpuclk
);
313 qemu_register_reset(main_cpu_reset
, cpu
);
315 /* TODO: support more than 256M RAM as highmem */
316 if (machine
->ram_size
!= 256 * MiB
) {
317 error_report("Invalid RAM size, should be 256MB");
320 memory_region_add_subregion(address_space_mem
, 0, machine
->ram
);
323 memory_region_init_rom(bios
, NULL
, "fuloong2e.bios", BIOS_SIZE
,
325 memory_region_add_subregion(address_space_mem
, 0x1fc00000LL
, bios
);
328 * We do not support flash operation, just loading pmon.bin as raw BIOS.
329 * Please use -L to set the BIOS path and -bios to set bios name.
332 if (kernel_filename
) {
333 loaderparams
.ram_size
= machine
->ram_size
;
334 loaderparams
.kernel_filename
= kernel_filename
;
335 loaderparams
.kernel_cmdline
= kernel_cmdline
;
336 loaderparams
.initrd_filename
= initrd_filename
;
337 kernel_entry
= load_kernel(env
);
338 write_bootloader(env
, memory_region_get_ram_ptr(bios
), kernel_entry
);
340 filename
= qemu_find_file(QEMU_FILE_TYPE_BIOS
,
341 bios_name
?: FULOONG_BIOSNAME
);
343 bios_size
= load_image_targphys(filename
, 0x1fc00000LL
,
350 if ((bios_size
< 0 || bios_size
> BIOS_SIZE
) &&
351 bios_name
&& !qtest_enabled()) {
352 error_report("Could not load MIPS bios '%s'", bios_name
);
357 /* Init internal devices */
358 cpu_mips_irq_init_cpu(cpu
);
359 cpu_mips_clock_init(cpu
);
361 /* North bridge, Bonito --> IP2 */
362 pci_bus
= bonito_init((qemu_irq
*)&(env
->irq
[2]));
364 /* South bridge -> IP5 */
365 vt82c686b_southbridge_init(pci_bus
, FULOONG2E_VIA_SLOT
, env
->irq
[5],
369 if (vga_interface_type
!= VGA_NONE
) {
370 pci_dev
= pci_new(-1, "ati-vga");
371 dev
= DEVICE(pci_dev
);
372 qdev_prop_set_uint32(dev
, "vgamem_mb", 16);
373 qdev_prop_set_uint16(dev
, "x-device-id", 0x5159);
374 pci_realize_and_unref(pci_dev
, pci_bus
, &error_fatal
);
377 /* Populate SPD eeprom data */
378 spd_data
= spd_data_generate(DDR
, machine
->ram_size
);
379 smbus_eeprom_init_one(smbus
, 0x50, spd_data
);
381 mc146818_rtc_init(isa_bus
, 2000, NULL
);
383 /* Network card: RTL8139D */
384 network_init(pci_bus
);
387 static void mips_fuloong2e_machine_init(MachineClass
*mc
)
389 mc
->desc
= "Fuloong 2e mini pc";
390 mc
->alias
= "fulong2e"; /* Incorrect name used up to QEMU 4.2 */
391 mc
->init
= mips_fuloong2e_init
;
392 mc
->block_default_type
= IF_IDE
;
393 mc
->default_cpu_type
= MIPS_CPU_TYPE_NAME("Loongson-2E");
394 mc
->default_ram_size
= 256 * MiB
;
395 mc
->default_ram_id
= "fuloong2e.ram";
396 mc
->minimum_page_bits
= 14;
399 DEFINE_MACHINE("fuloong2e", mips_fuloong2e_machine_init
)