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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" | |
2446333c | 40 | #include "blockdev.h" |
051c190b HC |
41 | |
42 | #define DEBUG_FULONG2E_INIT | |
43 | ||
44 | #define ENVP_ADDR 0x80002000l | |
45 | #define ENVP_NB_ENTRIES 16 | |
46 | #define ENVP_ENTRY_SIZE 256 | |
47 | ||
48 | #define MAX_IDE_BUS 2 | |
49 | ||
50 | /* | |
51 | * PMON is not part of qemu and released with BSD license, anyone | |
52 | * who want to build a pmon binary please first git-clone the source | |
53 | * from the git repository at: | |
54 | * http://www.loongson.cn/support/git/pmon | |
55 | * Then follow the "Compile Guide" available at: | |
56 | * http://dev.lemote.com/code/pmon | |
57 | * | |
58 | * Notes: | |
59 | * 1, don't use the source at http://dev.lemote.com/http_git/pmon.git | |
60 | * 2, use "Bonito2edev" to replace "dir_corresponding_to_your_target_hardware" | |
61 | * in the "Compile Guide". | |
62 | */ | |
63 | #define FULONG_BIOSNAME "pmon_fulong2e.bin" | |
64 | ||
65 | /* PCI SLOT in fulong 2e */ | |
66 | #define FULONG2E_VIA_SLOT 5 | |
67 | #define FULONG2E_ATI_SLOT 6 | |
68 | #define FULONG2E_RTL8139_SLOT 7 | |
69 | ||
64d7e9a4 | 70 | static ISADevice *pit; |
051c190b HC |
71 | |
72 | static struct _loaderparams { | |
73 | int ram_size; | |
74 | const char *kernel_filename; | |
75 | const char *kernel_cmdline; | |
76 | const char *initrd_filename; | |
77 | } loaderparams; | |
78 | ||
8b7968f7 SW |
79 | static void GCC_FMT_ATTR(3, 4) prom_set(uint32_t* prom_buf, int index, |
80 | const char *string, ...) | |
051c190b HC |
81 | { |
82 | va_list ap; | |
83 | int32_t table_addr; | |
84 | ||
85 | if (index >= ENVP_NB_ENTRIES) | |
86 | return; | |
87 | ||
88 | if (string == NULL) { | |
89 | prom_buf[index] = 0; | |
90 | return; | |
91 | } | |
92 | ||
93 | table_addr = sizeof(int32_t) * ENVP_NB_ENTRIES + index * ENVP_ENTRY_SIZE; | |
94 | prom_buf[index] = tswap32(ENVP_ADDR + table_addr); | |
95 | ||
96 | va_start(ap, string); | |
97 | vsnprintf((char *)prom_buf + table_addr, ENVP_ENTRY_SIZE, string, ap); | |
98 | va_end(ap); | |
99 | } | |
100 | ||
101 | static int64_t load_kernel (CPUState *env) | |
102 | { | |
103 | int64_t kernel_entry, kernel_low, kernel_high; | |
104 | int index = 0; | |
105 | long initrd_size; | |
106 | ram_addr_t initrd_offset; | |
107 | uint32_t *prom_buf; | |
108 | long prom_size; | |
109 | ||
110 | if (load_elf(loaderparams.kernel_filename, cpu_mips_kseg0_to_phys, NULL, | |
111 | (uint64_t *)&kernel_entry, (uint64_t *)&kernel_low, | |
112 | (uint64_t *)&kernel_high, 0, ELF_MACHINE, 1) < 0) { | |
113 | fprintf(stderr, "qemu: could not load kernel '%s'\n", | |
114 | loaderparams.kernel_filename); | |
115 | exit(1); | |
116 | } | |
117 | ||
118 | /* load initrd */ | |
119 | initrd_size = 0; | |
120 | initrd_offset = 0; | |
121 | if (loaderparams.initrd_filename) { | |
122 | initrd_size = get_image_size (loaderparams.initrd_filename); | |
123 | if (initrd_size > 0) { | |
124 | initrd_offset = (kernel_high + ~TARGET_PAGE_MASK) & TARGET_PAGE_MASK; | |
125 | if (initrd_offset + initrd_size > ram_size) { | |
126 | fprintf(stderr, | |
127 | "qemu: memory too small for initial ram disk '%s'\n", | |
128 | loaderparams.initrd_filename); | |
129 | exit(1); | |
130 | } | |
131 | initrd_size = load_image_targphys(loaderparams.initrd_filename, | |
132 | initrd_offset, ram_size - initrd_offset); | |
133 | } | |
134 | if (initrd_size == (target_ulong) -1) { | |
135 | fprintf(stderr, "qemu: could not load initial ram disk '%s'\n", | |
136 | loaderparams.initrd_filename); | |
137 | exit(1); | |
138 | } | |
139 | } | |
140 | ||
141 | /* Setup prom parameters. */ | |
142 | prom_size = ENVP_NB_ENTRIES * (sizeof(int32_t) + ENVP_ENTRY_SIZE); | |
143 | prom_buf = qemu_malloc(prom_size); | |
144 | ||
1ed1139d | 145 | prom_set(prom_buf, index++, "%s", loaderparams.kernel_filename); |
051c190b | 146 | if (initrd_size > 0) { |
1ed1139d | 147 | prom_set(prom_buf, index++, "rd_start=0x%" PRIx64 " rd_size=%li %s", |
051c190b HC |
148 | cpu_mips_phys_to_kseg0(NULL, initrd_offset), initrd_size, |
149 | loaderparams.kernel_cmdline); | |
150 | } else { | |
1ed1139d | 151 | prom_set(prom_buf, index++, "%s", loaderparams.kernel_cmdline); |
051c190b HC |
152 | } |
153 | ||
154 | /* Setup minimum environment variables */ | |
155 | prom_set(prom_buf, index++, "busclock=33000000"); | |
156 | prom_set(prom_buf, index++, "cpuclock=100000000"); | |
157 | prom_set(prom_buf, index++, "memsize=%i", loaderparams.ram_size/1024/1024); | |
158 | prom_set(prom_buf, index++, "modetty0=38400n8r"); | |
159 | prom_set(prom_buf, index++, NULL); | |
160 | ||
161 | rom_add_blob_fixed("prom", prom_buf, prom_size, | |
162 | cpu_mips_kseg0_to_phys(NULL, ENVP_ADDR)); | |
163 | ||
164 | return kernel_entry; | |
165 | } | |
166 | ||
167 | static void write_bootloader (CPUState *env, uint8_t *base, int64_t kernel_addr) | |
168 | { | |
169 | uint32_t *p; | |
170 | ||
171 | /* Small bootloader */ | |
172 | p = (uint32_t *) base; | |
173 | ||
174 | stl_raw(p++, 0x0bf00010); /* j 0x1fc00040 */ | |
175 | stl_raw(p++, 0x00000000); /* nop */ | |
176 | ||
177 | /* Second part of the bootloader */ | |
178 | p = (uint32_t *) (base + 0x040); | |
179 | ||
180 | stl_raw(p++, 0x3c040000); /* lui a0, 0 */ | |
181 | stl_raw(p++, 0x34840002); /* ori a0, a0, 2 */ | |
182 | stl_raw(p++, 0x3c050000 | ((ENVP_ADDR >> 16) & 0xffff)); /* lui a1, high(ENVP_ADDR) */ | |
183 | stl_raw(p++, 0x34a50000 | (ENVP_ADDR & 0xffff)); /* ori a1, a0, low(ENVP_ADDR) */ | |
184 | stl_raw(p++, 0x3c060000 | (((ENVP_ADDR + 8) >> 16) & 0xffff)); /* lui a2, high(ENVP_ADDR + 8) */ | |
185 | stl_raw(p++, 0x34c60000 | ((ENVP_ADDR + 8) & 0xffff)); /* ori a2, a2, low(ENVP_ADDR + 8) */ | |
186 | stl_raw(p++, 0x3c070000 | (loaderparams.ram_size >> 16)); /* lui a3, high(env->ram_size) */ | |
187 | stl_raw(p++, 0x34e70000 | (loaderparams.ram_size & 0xffff)); /* ori a3, a3, low(env->ram_size) */ | |
188 | stl_raw(p++, 0x3c1f0000 | ((kernel_addr >> 16) & 0xffff)); /* lui ra, high(kernel_addr) */; | |
189 | stl_raw(p++, 0x37ff0000 | (kernel_addr & 0xffff)); /* ori ra, ra, low(kernel_addr) */ | |
190 | stl_raw(p++, 0x03e00008); /* jr ra */ | |
191 | stl_raw(p++, 0x00000000); /* nop */ | |
192 | } | |
193 | ||
194 | ||
195 | static void main_cpu_reset(void *opaque) | |
196 | { | |
197 | CPUState *env = opaque; | |
198 | ||
199 | cpu_reset(env); | |
200 | /* TODO: 2E reset stuff */ | |
201 | if (loaderparams.kernel_filename) { | |
202 | env->CP0_Status &= ~((1 << CP0St_BEV) | (1 << CP0St_ERL)); | |
203 | } | |
204 | } | |
205 | ||
206 | uint8_t eeprom_spd[0x80] = { | |
207 | 0x80,0x08,0x07,0x0d,0x09,0x02,0x40,0x00,0x04,0x70, | |
208 | 0x70,0x00,0x82,0x10,0x00,0x01,0x0e,0x04,0x0c,0x01, | |
209 | 0x02,0x20,0x80,0x75,0x70,0x00,0x00,0x50,0x3c,0x50, | |
210 | 0x2d,0x20,0xb0,0xb0,0x50,0x50,0x00,0x00,0x00,0x00, | |
211 | 0x00,0x41,0x48,0x3c,0x32,0x75,0x00,0x00,0x00,0x00, | |
212 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
213 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
214 | 0x00,0x00,0x00,0x9c,0x7b,0x07,0x00,0x00,0x00,0x00, | |
215 | 0x00,0x00,0x00,0x00,0x48,0x42,0x35,0x34,0x41,0x32, | |
216 | 0x35,0x36,0x38,0x4b,0x4e,0x2d,0x41,0x37,0x35,0x42, | |
217 | 0x20,0x30,0x20 | |
218 | }; | |
219 | ||
220 | /* Audio support */ | |
051c190b HC |
221 | static void audio_init (PCIBus *pci_bus) |
222 | { | |
7899f799 IY |
223 | vt82c686b_ac97_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 5)); |
224 | vt82c686b_mc97_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 6)); | |
051c190b | 225 | } |
051c190b HC |
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; | |
051c190b | 259 | unsigned long ram_offset, bios_offset; |
093209cd | 260 | long bios_size; |
051c190b HC |
261 | int64_t kernel_entry; |
262 | qemu_irq *i8259; | |
263 | qemu_irq *cpu_exit_irq; | |
264 | int via_devfn; | |
265 | PCIBus *pci_bus; | |
051c190b HC |
266 | i2c_bus *smbus; |
267 | int i; | |
268 | DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; | |
051c190b HC |
269 | CPUState *env; |
270 | ||
271 | /* init CPUs */ | |
272 | if (cpu_model == NULL) { | |
273 | cpu_model = "Loongson-2E"; | |
274 | } | |
275 | env = cpu_init(cpu_model); | |
276 | if (!env) { | |
277 | fprintf(stderr, "Unable to find CPU definition\n"); | |
278 | exit(1); | |
279 | } | |
280 | ||
0be71e32 | 281 | register_savevm(NULL, "cpu", 0, 3, cpu_save, cpu_load, env); |
051c190b HC |
282 | qemu_register_reset(main_cpu_reset, env); |
283 | ||
284 | /* fulong 2e has 256M ram. */ | |
285 | ram_size = 256 * 1024 * 1024; | |
286 | ||
287 | /* fulong 2e has a 1M flash.Winbond W39L040AP70Z */ | |
288 | bios_size = 1024 * 1024; | |
289 | ||
290 | /* allocate RAM */ | |
1724f049 AW |
291 | ram_offset = qemu_ram_alloc(NULL, "fulong2e.ram", ram_size); |
292 | bios_offset = qemu_ram_alloc(NULL, "fulong2e.bios", bios_size); | |
051c190b | 293 | |
5340c8a0 | 294 | cpu_register_physical_memory(0, ram_size, ram_offset); |
051c190b HC |
295 | cpu_register_physical_memory(0x1fc00000LL, |
296 | bios_size, bios_offset | IO_MEM_ROM); | |
297 | ||
298 | /* We do not support flash operation, just loading pmon.bin as raw BIOS. | |
299 | * Please use -L to set the BIOS path and -bios to set bios name. */ | |
300 | ||
301 | if (kernel_filename) { | |
302 | loaderparams.ram_size = ram_size; | |
303 | loaderparams.kernel_filename = kernel_filename; | |
304 | loaderparams.kernel_cmdline = kernel_cmdline; | |
305 | loaderparams.initrd_filename = initrd_filename; | |
306 | kernel_entry = load_kernel (env); | |
307 | write_bootloader(env, qemu_get_ram_ptr(bios_offset), kernel_entry); | |
308 | } else { | |
33dd2983 AJ |
309 | if (bios_name == NULL) { |
310 | bios_name = FULONG_BIOSNAME; | |
051c190b HC |
311 | } |
312 | filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); | |
313 | if (filename) { | |
314 | bios_size = load_image_targphys(filename, 0x1fc00000LL, | |
315 | BIOS_SIZE); | |
316 | qemu_free(filename); | |
317 | } else { | |
318 | bios_size = -1; | |
319 | } | |
320 | ||
33dd2983 AJ |
321 | if ((bios_size < 0 || bios_size > BIOS_SIZE) && !kernel_filename) { |
322 | fprintf(stderr, "qemu: Could not load MIPS bios '%s'\n", bios_name); | |
051c190b | 323 | exit(1); |
33dd2983 | 324 | } |
051c190b HC |
325 | } |
326 | ||
327 | /* Init internal devices */ | |
328 | cpu_mips_irq_init_cpu(env); | |
329 | cpu_mips_clock_init(env); | |
330 | ||
331 | /* Interrupt controller */ | |
332 | /* The 8259 -> IP5 */ | |
333 | i8259 = i8259_init(env->irq[5]); | |
334 | ||
335 | /* North bridge, Bonito --> IP2 */ | |
336 | pci_bus = bonito_init((qemu_irq *)&(env->irq[2])); | |
337 | ||
338 | /* South bridge */ | |
75717903 | 339 | ide_drive_get(hd, MAX_IDE_BUS); |
051c190b | 340 | |
7899f799 | 341 | via_devfn = vt82c686b_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 0)); |
051c190b HC |
342 | if (via_devfn < 0) { |
343 | fprintf(stderr, "vt82c686b_init error \n"); | |
344 | exit(1); | |
345 | } | |
346 | ||
347 | isa_bus_irqs(i8259); | |
7899f799 IY |
348 | vt82c686b_ide_init(pci_bus, hd, PCI_DEVFN(FULONG2E_VIA_SLOT, 1)); |
349 | usb_uhci_vt82c686b_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 2)); | |
350 | usb_uhci_vt82c686b_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 3)); | |
051c190b | 351 | |
7899f799 | 352 | smbus = vt82c686b_pm_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 4), |
051c190b | 353 | 0xeee1, NULL); |
051c190b | 354 | /* TODO: Populate SPD eeprom data. */ |
a88df0b9 | 355 | smbus_eeprom_init(smbus, 1, eeprom_spd, sizeof(eeprom_spd)); |
051c190b HC |
356 | |
357 | /* init other devices */ | |
64d7e9a4 | 358 | pit = pit_init(0x40, 0); |
051c190b HC |
359 | cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1); |
360 | DMA_init(0, cpu_exit_irq); | |
361 | ||
362 | /* Super I/O */ | |
49a2942d | 363 | isa_create_simple("i8042"); |
051c190b | 364 | |
49a2942d | 365 | rtc_init(2000, NULL); |
051c190b HC |
366 | |
367 | for(i = 0; i < MAX_SERIAL_PORTS; i++) { | |
368 | if (serial_hds[i]) { | |
369 | serial_isa_init(i, serial_hds[i]); | |
370 | } | |
371 | } | |
372 | ||
373 | if (parallel_hds[0]) { | |
374 | parallel_init(0, parallel_hds[0]); | |
375 | } | |
376 | ||
377 | /* Sound card */ | |
051c190b | 378 | audio_init(pci_bus); |
051c190b HC |
379 | /* Network card */ |
380 | network_init(); | |
381 | } | |
382 | ||
383 | QEMUMachine mips_fulong2e_machine = { | |
384 | .name = "fulong2e", | |
385 | .desc = "Fulong 2e mini pc", | |
386 | .init = mips_fulong2e_init, | |
387 | }; | |
388 | ||
389 | static void mips_fulong2e_machine_init(void) | |
390 | { | |
391 | qemu_register_machine(&mips_fulong2e_machine); | |
392 | } | |
393 | ||
394 | machine_init(mips_fulong2e_machine_init); |