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051c190b HC |
1 | /* |
2 | * QEMU fulong 2e mini pc support | |
3 | * | |
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. | |
8 | */ | |
9 | ||
10 | /* | |
11 | * Fulong 2e mini pc is based on ICT/ST Loongson 2e CPU (MIPS III like, 800MHz) | |
12 | * http://www.linux-mips.org/wiki/Fulong | |
13 | * | |
14 | * Loongson 2e user manual: | |
15 | * http://www.loongsondeveloper.com/doc/Loongson2EUserGuide.pdf | |
16 | */ | |
17 | ||
18 | #include "hw.h" | |
19 | #include "pc.h" | |
20 | #include "fdc.h" | |
21 | #include "net.h" | |
22 | #include "boards.h" | |
23 | #include "smbus.h" | |
24 | #include "block.h" | |
25 | #include "flash.h" | |
26 | #include "mips.h" | |
27 | #include "mips_cpudevs.h" | |
28 | #include "pci.h" | |
29 | #include "usb-uhci.h" | |
30 | #include "qemu-char.h" | |
31 | #include "sysemu.h" | |
32 | #include "audio/audio.h" | |
33 | #include "qemu-log.h" | |
34 | #include "loader.h" | |
35 | #include "mips-bios.h" | |
36 | #include "ide.h" | |
37 | #include "elf.h" | |
38 | #include "vt82c686.h" | |
39 | #include "mc146818rtc.h" | |
40 | ||
41 | #define DEBUG_FULONG2E_INIT | |
42 | ||
43 | #define ENVP_ADDR 0x80002000l | |
44 | #define ENVP_NB_ENTRIES 16 | |
45 | #define ENVP_ENTRY_SIZE 256 | |
46 | ||
47 | #define MAX_IDE_BUS 2 | |
48 | ||
49 | /* | |
50 | * PMON is not part of qemu and released with BSD license, anyone | |
51 | * who want to build a pmon binary please first git-clone the source | |
52 | * from the git repository at: | |
53 | * http://www.loongson.cn/support/git/pmon | |
54 | * Then follow the "Compile Guide" available at: | |
55 | * http://dev.lemote.com/code/pmon | |
56 | * | |
57 | * Notes: | |
58 | * 1, don't use the source at http://dev.lemote.com/http_git/pmon.git | |
59 | * 2, use "Bonito2edev" to replace "dir_corresponding_to_your_target_hardware" | |
60 | * in the "Compile Guide". | |
61 | */ | |
62 | #define FULONG_BIOSNAME "pmon_fulong2e.bin" | |
63 | ||
64 | /* PCI SLOT in fulong 2e */ | |
65 | #define FULONG2E_VIA_SLOT 5 | |
66 | #define FULONG2E_ATI_SLOT 6 | |
67 | #define FULONG2E_RTL8139_SLOT 7 | |
68 | ||
69 | static PITState *pit; | |
70 | ||
71 | static struct _loaderparams { | |
72 | int ram_size; | |
73 | const char *kernel_filename; | |
74 | const char *kernel_cmdline; | |
75 | const char *initrd_filename; | |
76 | } loaderparams; | |
77 | ||
78 | static void prom_set(uint32_t* prom_buf, int index, const char *string, ...) | |
79 | { | |
80 | va_list ap; | |
81 | int32_t table_addr; | |
82 | ||
83 | if (index >= ENVP_NB_ENTRIES) | |
84 | return; | |
85 | ||
86 | if (string == NULL) { | |
87 | prom_buf[index] = 0; | |
88 | return; | |
89 | } | |
90 | ||
91 | table_addr = sizeof(int32_t) * ENVP_NB_ENTRIES + index * ENVP_ENTRY_SIZE; | |
92 | prom_buf[index] = tswap32(ENVP_ADDR + table_addr); | |
93 | ||
94 | va_start(ap, string); | |
95 | vsnprintf((char *)prom_buf + table_addr, ENVP_ENTRY_SIZE, string, ap); | |
96 | va_end(ap); | |
97 | } | |
98 | ||
99 | static int64_t load_kernel (CPUState *env) | |
100 | { | |
101 | int64_t kernel_entry, kernel_low, kernel_high; | |
102 | int index = 0; | |
103 | long initrd_size; | |
104 | ram_addr_t initrd_offset; | |
105 | uint32_t *prom_buf; | |
106 | long prom_size; | |
107 | ||
108 | if (load_elf(loaderparams.kernel_filename, cpu_mips_kseg0_to_phys, NULL, | |
109 | (uint64_t *)&kernel_entry, (uint64_t *)&kernel_low, | |
110 | (uint64_t *)&kernel_high, 0, ELF_MACHINE, 1) < 0) { | |
111 | fprintf(stderr, "qemu: could not load kernel '%s'\n", | |
112 | loaderparams.kernel_filename); | |
113 | exit(1); | |
114 | } | |
115 | ||
116 | /* load initrd */ | |
117 | initrd_size = 0; | |
118 | initrd_offset = 0; | |
119 | if (loaderparams.initrd_filename) { | |
120 | initrd_size = get_image_size (loaderparams.initrd_filename); | |
121 | if (initrd_size > 0) { | |
122 | initrd_offset = (kernel_high + ~TARGET_PAGE_MASK) & TARGET_PAGE_MASK; | |
123 | if (initrd_offset + initrd_size > ram_size) { | |
124 | fprintf(stderr, | |
125 | "qemu: memory too small for initial ram disk '%s'\n", | |
126 | loaderparams.initrd_filename); | |
127 | exit(1); | |
128 | } | |
129 | initrd_size = load_image_targphys(loaderparams.initrd_filename, | |
130 | initrd_offset, ram_size - initrd_offset); | |
131 | } | |
132 | if (initrd_size == (target_ulong) -1) { | |
133 | fprintf(stderr, "qemu: could not load initial ram disk '%s'\n", | |
134 | loaderparams.initrd_filename); | |
135 | exit(1); | |
136 | } | |
137 | } | |
138 | ||
139 | /* Setup prom parameters. */ | |
140 | prom_size = ENVP_NB_ENTRIES * (sizeof(int32_t) + ENVP_ENTRY_SIZE); | |
141 | prom_buf = qemu_malloc(prom_size); | |
142 | ||
143 | prom_set(prom_buf, index++, loaderparams.kernel_filename); | |
144 | if (initrd_size > 0) { | |
145 | prom_set(prom_buf, index++, "rd_start=0x" PRIx64 " rd_size=%li %s", | |
146 | cpu_mips_phys_to_kseg0(NULL, initrd_offset), initrd_size, | |
147 | loaderparams.kernel_cmdline); | |
148 | } else { | |
149 | prom_set(prom_buf, index++, loaderparams.kernel_cmdline); | |
150 | } | |
151 | ||
152 | /* Setup minimum environment variables */ | |
153 | prom_set(prom_buf, index++, "busclock=33000000"); | |
154 | prom_set(prom_buf, index++, "cpuclock=100000000"); | |
155 | prom_set(prom_buf, index++, "memsize=%i", loaderparams.ram_size/1024/1024); | |
156 | prom_set(prom_buf, index++, "modetty0=38400n8r"); | |
157 | prom_set(prom_buf, index++, NULL); | |
158 | ||
159 | rom_add_blob_fixed("prom", prom_buf, prom_size, | |
160 | cpu_mips_kseg0_to_phys(NULL, ENVP_ADDR)); | |
161 | ||
162 | return kernel_entry; | |
163 | } | |
164 | ||
165 | static void write_bootloader (CPUState *env, uint8_t *base, int64_t kernel_addr) | |
166 | { | |
167 | uint32_t *p; | |
168 | ||
169 | /* Small bootloader */ | |
170 | p = (uint32_t *) base; | |
171 | ||
172 | stl_raw(p++, 0x0bf00010); /* j 0x1fc00040 */ | |
173 | stl_raw(p++, 0x00000000); /* nop */ | |
174 | ||
175 | /* Second part of the bootloader */ | |
176 | p = (uint32_t *) (base + 0x040); | |
177 | ||
178 | stl_raw(p++, 0x3c040000); /* lui a0, 0 */ | |
179 | stl_raw(p++, 0x34840002); /* ori a0, a0, 2 */ | |
180 | stl_raw(p++, 0x3c050000 | ((ENVP_ADDR >> 16) & 0xffff)); /* lui a1, high(ENVP_ADDR) */ | |
181 | stl_raw(p++, 0x34a50000 | (ENVP_ADDR & 0xffff)); /* ori a1, a0, low(ENVP_ADDR) */ | |
182 | stl_raw(p++, 0x3c060000 | (((ENVP_ADDR + 8) >> 16) & 0xffff)); /* lui a2, high(ENVP_ADDR + 8) */ | |
183 | stl_raw(p++, 0x34c60000 | ((ENVP_ADDR + 8) & 0xffff)); /* ori a2, a2, low(ENVP_ADDR + 8) */ | |
184 | stl_raw(p++, 0x3c070000 | (loaderparams.ram_size >> 16)); /* lui a3, high(env->ram_size) */ | |
185 | stl_raw(p++, 0x34e70000 | (loaderparams.ram_size & 0xffff)); /* ori a3, a3, low(env->ram_size) */ | |
186 | stl_raw(p++, 0x3c1f0000 | ((kernel_addr >> 16) & 0xffff)); /* lui ra, high(kernel_addr) */; | |
187 | stl_raw(p++, 0x37ff0000 | (kernel_addr & 0xffff)); /* ori ra, ra, low(kernel_addr) */ | |
188 | stl_raw(p++, 0x03e00008); /* jr ra */ | |
189 | stl_raw(p++, 0x00000000); /* nop */ | |
190 | } | |
191 | ||
192 | ||
193 | static void main_cpu_reset(void *opaque) | |
194 | { | |
195 | CPUState *env = opaque; | |
196 | ||
197 | cpu_reset(env); | |
198 | /* TODO: 2E reset stuff */ | |
199 | if (loaderparams.kernel_filename) { | |
200 | env->CP0_Status &= ~((1 << CP0St_BEV) | (1 << CP0St_ERL)); | |
201 | } | |
202 | } | |
203 | ||
204 | uint8_t eeprom_spd[0x80] = { | |
205 | 0x80,0x08,0x07,0x0d,0x09,0x02,0x40,0x00,0x04,0x70, | |
206 | 0x70,0x00,0x82,0x10,0x00,0x01,0x0e,0x04,0x0c,0x01, | |
207 | 0x02,0x20,0x80,0x75,0x70,0x00,0x00,0x50,0x3c,0x50, | |
208 | 0x2d,0x20,0xb0,0xb0,0x50,0x50,0x00,0x00,0x00,0x00, | |
209 | 0x00,0x41,0x48,0x3c,0x32,0x75,0x00,0x00,0x00,0x00, | |
210 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
211 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
212 | 0x00,0x00,0x00,0x9c,0x7b,0x07,0x00,0x00,0x00,0x00, | |
213 | 0x00,0x00,0x00,0x00,0x48,0x42,0x35,0x34,0x41,0x32, | |
214 | 0x35,0x36,0x38,0x4b,0x4e,0x2d,0x41,0x37,0x35,0x42, | |
215 | 0x20,0x30,0x20 | |
216 | }; | |
217 | ||
218 | /* Audio support */ | |
219 | #ifdef HAS_AUDIO | |
220 | static void audio_init (PCIBus *pci_bus) | |
221 | { | |
222 | vt82c686b_ac97_init(pci_bus, (FULONG2E_VIA_SLOT << 3) + 5); | |
223 | vt82c686b_mc97_init(pci_bus, (FULONG2E_VIA_SLOT << 3) + 6); | |
224 | } | |
225 | #endif | |
226 | ||
227 | /* Network support */ | |
228 | static void network_init (void) | |
229 | { | |
230 | int i; | |
231 | ||
232 | for(i = 0; i < nb_nics; i++) { | |
233 | NICInfo *nd = &nd_table[i]; | |
234 | const char *default_devaddr = NULL; | |
235 | ||
236 | if (i == 0 && (!nd->model || strcmp(nd->model, "rtl8139") == 0)) { | |
237 | /* The fulong board has a RTL8139 card using PCI SLOT 7 */ | |
238 | default_devaddr = "07"; | |
239 | } | |
240 | ||
241 | pci_nic_init_nofail(nd, "rtl8139", default_devaddr); | |
242 | } | |
243 | } | |
244 | ||
245 | static void cpu_request_exit(void *opaque, int irq, int level) | |
246 | { | |
247 | CPUState *env = cpu_single_env; | |
248 | ||
249 | if (env && level) { | |
250 | cpu_exit(env); | |
251 | } | |
252 | } | |
253 | ||
254 | static void mips_fulong2e_init(ram_addr_t ram_size, const char *boot_device, | |
255 | const char *kernel_filename, const char *kernel_cmdline, | |
256 | const char *initrd_filename, const char *cpu_model) | |
257 | { | |
258 | char *filename; | |
259 | char buf[1024]; | |
260 | unsigned long ram_offset, bios_offset; | |
261 | unsigned long bios_size; | |
262 | int64_t kernel_entry; | |
263 | qemu_irq *i8259; | |
264 | qemu_irq *cpu_exit_irq; | |
265 | int via_devfn; | |
266 | PCIBus *pci_bus; | |
267 | ISADevice *isa_dev; | |
268 | uint8_t *eeprom_buf; | |
269 | i2c_bus *smbus; | |
270 | int i; | |
271 | DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; | |
272 | DeviceState *eeprom; | |
273 | ISADevice *rtc_state; | |
274 | CPUState *env; | |
275 | ||
276 | /* init CPUs */ | |
277 | if (cpu_model == NULL) { | |
278 | cpu_model = "Loongson-2E"; | |
279 | } | |
280 | env = cpu_init(cpu_model); | |
281 | if (!env) { | |
282 | fprintf(stderr, "Unable to find CPU definition\n"); | |
283 | exit(1); | |
284 | } | |
285 | ||
286 | register_savevm("cpu", 0, 3, cpu_save, cpu_load, env); | |
287 | qemu_register_reset(main_cpu_reset, env); | |
288 | ||
289 | /* fulong 2e has 256M ram. */ | |
290 | ram_size = 256 * 1024 * 1024; | |
291 | ||
292 | /* fulong 2e has a 1M flash.Winbond W39L040AP70Z */ | |
293 | bios_size = 1024 * 1024; | |
294 | ||
295 | /* allocate RAM */ | |
296 | ram_offset = qemu_ram_alloc(ram_size); | |
297 | bios_offset = qemu_ram_alloc(bios_size); | |
298 | ||
299 | cpu_register_physical_memory(0, ram_size, IO_MEM_RAM); | |
300 | cpu_register_physical_memory(0x1fc00000LL, | |
301 | bios_size, bios_offset | IO_MEM_ROM); | |
302 | ||
303 | /* We do not support flash operation, just loading pmon.bin as raw BIOS. | |
304 | * Please use -L to set the BIOS path and -bios to set bios name. */ | |
305 | ||
306 | if (kernel_filename) { | |
307 | loaderparams.ram_size = ram_size; | |
308 | loaderparams.kernel_filename = kernel_filename; | |
309 | loaderparams.kernel_cmdline = kernel_cmdline; | |
310 | loaderparams.initrd_filename = initrd_filename; | |
311 | kernel_entry = load_kernel (env); | |
312 | write_bootloader(env, qemu_get_ram_ptr(bios_offset), kernel_entry); | |
313 | } else { | |
314 | if (bios_name == NULL) { | |
315 | bios_name = FULONG_BIOSNAME; | |
316 | } | |
317 | filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); | |
318 | if (filename) { | |
319 | bios_size = load_image_targphys(filename, 0x1fc00000LL, | |
320 | BIOS_SIZE); | |
321 | qemu_free(filename); | |
322 | } else { | |
323 | bios_size = -1; | |
324 | } | |
325 | ||
326 | if ((bios_size < 0 || bios_size > BIOS_SIZE) && !kernel_filename) { | |
327 | fprintf(stderr, "qemu: Could not load MIPS bios '%s'\n", buf); | |
328 | exit(1); | |
329 | } | |
330 | } | |
331 | ||
332 | /* Init internal devices */ | |
333 | cpu_mips_irq_init_cpu(env); | |
334 | cpu_mips_clock_init(env); | |
335 | ||
336 | /* Interrupt controller */ | |
337 | /* The 8259 -> IP5 */ | |
338 | i8259 = i8259_init(env->irq[5]); | |
339 | ||
340 | /* North bridge, Bonito --> IP2 */ | |
341 | pci_bus = bonito_init((qemu_irq *)&(env->irq[2])); | |
342 | ||
343 | /* South bridge */ | |
344 | if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) { | |
345 | fprintf(stderr, "qemu: too many IDE bus\n"); | |
346 | exit(1); | |
347 | } | |
348 | ||
349 | for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) { | |
350 | hd[i] = drive_get(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS); | |
351 | } | |
352 | ||
353 | via_devfn = vt82c686b_init(pci_bus, FULONG2E_VIA_SLOT << 3); | |
354 | if (via_devfn < 0) { | |
355 | fprintf(stderr, "vt82c686b_init error \n"); | |
356 | exit(1); | |
357 | } | |
358 | ||
359 | isa_bus_irqs(i8259); | |
360 | vt82c686b_ide_init(pci_bus, hd, (FULONG2E_VIA_SLOT << 3) + 1); | |
361 | usb_uhci_vt82c686b_init(pci_bus, (FULONG2E_VIA_SLOT << 3) + 2); | |
362 | usb_uhci_vt82c686b_init(pci_bus, (FULONG2E_VIA_SLOT << 3) + 3); | |
363 | ||
364 | smbus = vt82c686b_pm_init(pci_bus, (FULONG2E_VIA_SLOT << 3) + 4, | |
365 | 0xeee1, NULL); | |
366 | eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */ | |
367 | memcpy(eeprom_buf, eeprom_spd, sizeof(eeprom_spd)); | |
368 | /* TODO: Populate SPD eeprom data. */ | |
369 | eeprom = qdev_create((BusState *)smbus, "smbus-eeprom"); | |
370 | qdev_prop_set_uint8(eeprom, "address", 0x50); | |
371 | qdev_prop_set_ptr(eeprom, "data", eeprom_buf); | |
372 | qdev_init_nofail(eeprom); | |
373 | ||
374 | /* init other devices */ | |
375 | pit = pit_init(0x40, isa_reserve_irq(0)); | |
376 | cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1); | |
377 | DMA_init(0, cpu_exit_irq); | |
378 | ||
379 | /* Super I/O */ | |
380 | isa_dev = isa_create_simple("i8042"); | |
381 | ||
382 | rtc_state = rtc_init(2000, NULL); | |
383 | ||
384 | for(i = 0; i < MAX_SERIAL_PORTS; i++) { | |
385 | if (serial_hds[i]) { | |
386 | serial_isa_init(i, serial_hds[i]); | |
387 | } | |
388 | } | |
389 | ||
390 | if (parallel_hds[0]) { | |
391 | parallel_init(0, parallel_hds[0]); | |
392 | } | |
393 | ||
394 | /* Sound card */ | |
395 | #ifdef HAS_AUDIO | |
396 | audio_init(pci_bus); | |
397 | #endif | |
398 | /* Network card */ | |
399 | network_init(); | |
400 | } | |
401 | ||
402 | QEMUMachine mips_fulong2e_machine = { | |
403 | .name = "fulong2e", | |
404 | .desc = "Fulong 2e mini pc", | |
405 | .init = mips_fulong2e_init, | |
406 | }; | |
407 | ||
408 | static void mips_fulong2e_machine_init(void) | |
409 | { | |
410 | qemu_register_machine(&mips_fulong2e_machine); | |
411 | } | |
412 | ||
413 | machine_init(mips_fulong2e_machine_init); |