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Fix off-by-one error
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1/*
2 * QEMU Sun4u System Emulator
3 *
4 * Copyright (c) 2005 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24#include "vl.h"
83469015 25#include "m48t59.h"
3475187d 26
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27#define KERNEL_LOAD_ADDR 0x00404000
28#define CMDLINE_ADDR 0x003ff000
29#define INITRD_LOAD_ADDR 0x00300000
75956cf0 30#define PROM_SIZE_MAX (512 * 1024)
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31#define PROM_ADDR 0x1fff0000000ULL
32#define APB_SPECIAL_BASE 0x1fe00000000ULL
33#define APB_MEM_BASE 0x1ff00000000ULL
34#define VGA_BASE (APB_MEM_BASE + 0x400000ULL)
0986ac3b 35#define PROM_FILENAME "openbios-sparc64"
83469015 36#define NVRAM_SIZE 0x2000
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37
38/* TSC handling */
39
40uint64_t cpu_get_tsc()
41{
42 return qemu_get_clock(vm_clock);
43}
44
45int DMA_get_channel_mode (int nchan)
46{
47 return 0;
48}
49int DMA_read_memory (int nchan, void *buf, int pos, int size)
50{
51 return 0;
52}
53int DMA_write_memory (int nchan, void *buf, int pos, int size)
54{
55 return 0;
56}
57void DMA_hold_DREQ (int nchan) {}
58void DMA_release_DREQ (int nchan) {}
59void DMA_schedule(int nchan) {}
60void DMA_run (void) {}
61void DMA_init (int high_page_enable) {}
62void DMA_register_channel (int nchan,
63 DMA_transfer_handler transfer_handler,
64 void *opaque)
65{
66}
67
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68/* NVRAM helpers */
69void NVRAM_set_byte (m48t59_t *nvram, uint32_t addr, uint8_t value)
3475187d 70{
819385c5 71 m48t59_write(nvram, addr, value);
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72}
73
83469015 74uint8_t NVRAM_get_byte (m48t59_t *nvram, uint32_t addr)
3475187d 75{
819385c5 76 return m48t59_read(nvram, addr);
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77}
78
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79void NVRAM_set_word (m48t59_t *nvram, uint32_t addr, uint16_t value)
80{
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81 m48t59_write(nvram, addr, value >> 8);
82 m48t59_write(nvram, addr + 1, value & 0xFF);
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83}
84
85uint16_t NVRAM_get_word (m48t59_t *nvram, uint32_t addr)
86{
87 uint16_t tmp;
88
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89 tmp = m48t59_read(nvram, addr) << 8;
90 tmp |= m48t59_read(nvram, addr + 1);
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91
92 return tmp;
93}
94
95void NVRAM_set_lword (m48t59_t *nvram, uint32_t addr, uint32_t value)
96{
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97 m48t59_write(nvram, addr, value >> 24);
98 m48t59_write(nvram, addr + 1, (value >> 16) & 0xFF);
99 m48t59_write(nvram, addr + 2, (value >> 8) & 0xFF);
100 m48t59_write(nvram, addr + 3, value & 0xFF);
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101}
102
103uint32_t NVRAM_get_lword (m48t59_t *nvram, uint32_t addr)
104{
105 uint32_t tmp;
106
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107 tmp = m48t59_read(nvram, addr) << 24;
108 tmp |= m48t59_read(nvram, addr + 1) << 16;
109 tmp |= m48t59_read(nvram, addr + 2) << 8;
110 tmp |= m48t59_read(nvram, addr + 3);
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111
112 return tmp;
113}
114
115void NVRAM_set_string (m48t59_t *nvram, uint32_t addr,
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116 const unsigned char *str, uint32_t max)
117{
83469015 118 int i;
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119
120 for (i = 0; i < max && str[i] != '\0'; i++) {
819385c5 121 m48t59_write(nvram, addr + i, str[i]);
3475187d 122 }
819385c5 123 m48t59_write(nvram, addr + max - 1, '\0');
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124}
125
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126int NVRAM_get_string (m48t59_t *nvram, uint8_t *dst, uint16_t addr, int max)
127{
128 int i;
129
130 memset(dst, 0, max);
131 for (i = 0; i < max; i++) {
132 dst[i] = NVRAM_get_byte(nvram, addr + i);
133 if (dst[i] == '\0')
134 break;
135 }
136
137 return i;
138}
139
140static uint16_t NVRAM_crc_update (uint16_t prev, uint16_t value)
141{
142 uint16_t tmp;
143 uint16_t pd, pd1, pd2;
144
145 tmp = prev >> 8;
146 pd = prev ^ value;
147 pd1 = pd & 0x000F;
148 pd2 = ((pd >> 4) & 0x000F) ^ pd1;
149 tmp ^= (pd1 << 3) | (pd1 << 8);
150 tmp ^= pd2 | (pd2 << 7) | (pd2 << 12);
151
152 return tmp;
153}
154
155uint16_t NVRAM_compute_crc (m48t59_t *nvram, uint32_t start, uint32_t count)
156{
157 uint32_t i;
158 uint16_t crc = 0xFFFF;
159 int odd;
160
161 odd = count & 1;
162 count &= ~1;
163 for (i = 0; i != count; i++) {
164 crc = NVRAM_crc_update(crc, NVRAM_get_word(nvram, start + i));
165 }
166 if (odd) {
167 crc = NVRAM_crc_update(crc, NVRAM_get_byte(nvram, start + i) << 8);
168 }
169
170 return crc;
171}
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172
173extern int nographic;
174
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175int sun4u_NVRAM_set_params (m48t59_t *nvram, uint16_t NVRAM_size,
176 const unsigned char *arch,
177 uint32_t RAM_size, int boot_device,
178 uint32_t kernel_image, uint32_t kernel_size,
179 const char *cmdline,
180 uint32_t initrd_image, uint32_t initrd_size,
181 uint32_t NVRAM_image,
182 int width, int height, int depth)
183{
184 uint16_t crc;
185
186 /* Set parameters for Open Hack'Ware BIOS */
187 NVRAM_set_string(nvram, 0x00, "QEMU_BIOS", 16);
188 NVRAM_set_lword(nvram, 0x10, 0x00000002); /* structure v2 */
189 NVRAM_set_word(nvram, 0x14, NVRAM_size);
190 NVRAM_set_string(nvram, 0x20, arch, 16);
191 NVRAM_set_byte(nvram, 0x2f, nographic & 0xff);
192 NVRAM_set_lword(nvram, 0x30, RAM_size);
193 NVRAM_set_byte(nvram, 0x34, boot_device);
194 NVRAM_set_lword(nvram, 0x38, kernel_image);
195 NVRAM_set_lword(nvram, 0x3C, kernel_size);
3475187d 196 if (cmdline) {
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197 /* XXX: put the cmdline in NVRAM too ? */
198 strcpy(phys_ram_base + CMDLINE_ADDR, cmdline);
199 NVRAM_set_lword(nvram, 0x40, CMDLINE_ADDR);
200 NVRAM_set_lword(nvram, 0x44, strlen(cmdline));
201 } else {
202 NVRAM_set_lword(nvram, 0x40, 0);
203 NVRAM_set_lword(nvram, 0x44, 0);
3475187d 204 }
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205 NVRAM_set_lword(nvram, 0x48, initrd_image);
206 NVRAM_set_lword(nvram, 0x4C, initrd_size);
207 NVRAM_set_lword(nvram, 0x50, NVRAM_image);
208
209 NVRAM_set_word(nvram, 0x54, width);
210 NVRAM_set_word(nvram, 0x56, height);
211 NVRAM_set_word(nvram, 0x58, depth);
212 crc = NVRAM_compute_crc(nvram, 0x00, 0xF8);
213 NVRAM_set_word(nvram, 0xFC, crc);
214
215 return 0;
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216}
217
218void pic_info()
219{
220}
221
222void irq_info()
223{
224}
225
226void pic_set_irq(int irq, int level)
227{
228}
229
83469015 230void pic_set_irq_new(void *opaque, int irq, int level)
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231{
232}
233
83469015 234void qemu_system_powerdown(void)
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235{
236}
237
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238static void main_cpu_reset(void *opaque)
239{
240 CPUState *env = opaque;
241 cpu_reset(env);
242}
243
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244static const int ide_iobase[2] = { 0x1f0, 0x170 };
245static const int ide_iobase2[2] = { 0x3f6, 0x376 };
246static const int ide_irq[2] = { 14, 15 };
3475187d 247
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248static const int serial_io[MAX_SERIAL_PORTS] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
249static const int serial_irq[MAX_SERIAL_PORTS] = { 4, 3, 4, 3 };
250
251static const int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };
252static const int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 };
253
254static fdctrl_t *floppy_controller;
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255
256/* Sun4u hardware initialisation */
257static void sun4u_init(int ram_size, int vga_ram_size, int boot_device,
258 DisplayState *ds, const char **fd_filename, int snapshot,
259 const char *kernel_filename, const char *kernel_cmdline,
94fc95cd 260 const char *initrd_filename, const char *cpu_model)
3475187d 261{
c68ea704 262 CPUState *env;
3475187d 263 char buf[1024];
83469015 264 m48t59_t *nvram;
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265 int ret, linux_boot;
266 unsigned int i;
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267 long prom_offset, initrd_size, kernel_size;
268 PCIBus *pci_bus;
62724a37 269 const sparc_def_t *def;
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270
271 linux_boot = (kernel_filename != NULL);
272
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273 /* init CPUs */
274 if (cpu_model == NULL)
275 cpu_model = "TI UltraSparc II";
276 sparc_find_by_name(cpu_model, &def);
277 if (def == NULL) {
278 fprintf(stderr, "Unable to find Sparc CPU definition\n");
279 exit(1);
280 }
c68ea704 281 env = cpu_init();
62724a37 282 cpu_sparc_register(env, def);
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283 register_savevm("cpu", 0, 3, cpu_save, cpu_load, env);
284 qemu_register_reset(main_cpu_reset, env);
285
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286 /* allocate RAM */
287 cpu_register_physical_memory(0, ram_size, 0);
288
83469015 289 prom_offset = ram_size + vga_ram_size;
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290 cpu_register_physical_memory(PROM_ADDR,
291 (PROM_SIZE_MAX + TARGET_PAGE_SIZE) & TARGET_PAGE_MASK,
292 prom_offset | IO_MEM_ROM);
3475187d 293
0986ac3b 294 snprintf(buf, sizeof(buf), "%s/%s", bios_dir, PROM_FILENAME);
9ee3c029 295 ret = load_elf(buf, 0, NULL);
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296 if (ret < 0) {
297 fprintf(stderr, "qemu: could not load prom '%s'\n",
298 buf);
299 exit(1);
300 }
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301
302 kernel_size = 0;
83469015 303 initrd_size = 0;
3475187d 304 if (linux_boot) {
b3783731 305 /* XXX: put correct offset */
9ee3c029 306 kernel_size = load_elf(kernel_filename, 0, NULL);
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307 if (kernel_size < 0)
308 kernel_size = load_aout(kernel_filename, phys_ram_base + KERNEL_LOAD_ADDR);
309 if (kernel_size < 0)
310 kernel_size = load_image(kernel_filename, phys_ram_base + KERNEL_LOAD_ADDR);
311 if (kernel_size < 0) {
312 fprintf(stderr, "qemu: could not load kernel '%s'\n",
313 kernel_filename);
314 exit(1);
315 }
316
317 /* load initrd */
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318 if (initrd_filename) {
319 initrd_size = load_image(initrd_filename, phys_ram_base + INITRD_LOAD_ADDR);
320 if (initrd_size < 0) {
321 fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
322 initrd_filename);
323 exit(1);
324 }
325 }
326 if (initrd_size > 0) {
327 for (i = 0; i < 64 * TARGET_PAGE_SIZE; i += TARGET_PAGE_SIZE) {
328 if (ldl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i)
329 == 0x48647253) { // HdrS
330 stl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i + 16, INITRD_LOAD_ADDR);
331 stl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i + 20, initrd_size);
332 break;
333 }
334 }
335 }
336 }
502a5395 337 pci_bus = pci_apb_init(APB_SPECIAL_BASE, APB_MEM_BASE, NULL);
83469015 338 isa_mem_base = VGA_BASE;
75956cf0 339 pci_cirrus_vga_init(pci_bus, ds, phys_ram_base + ram_size, ram_size, vga_ram_size);
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340
341 for(i = 0; i < MAX_SERIAL_PORTS; i++) {
342 if (serial_hds[i]) {
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343 serial_init(&pic_set_irq_new, NULL,
344 serial_io[i], serial_irq[i], serial_hds[i]);
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345 }
346 }
347
348 for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
349 if (parallel_hds[i]) {
350 parallel_init(parallel_io[i], parallel_irq[i], parallel_hds[i]);
351 }
352 }
353
354 for(i = 0; i < nb_nics; i++) {
a41b2ff2
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355 if (!nd_table[i].model)
356 nd_table[i].model = "ne2k_pci";
abcebc7e 357 pci_nic_init(pci_bus, &nd_table[i], -1);
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358 }
359
360 pci_cmd646_ide_init(pci_bus, bs_table, 1);
361 kbd_init();
362 floppy_controller = fdctrl_init(6, 2, 0, 0x3f0, fd_table);
819385c5 363 nvram = m48t59_init(8, 0, 0x0074, NVRAM_SIZE, 59);
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364 sun4u_NVRAM_set_params(nvram, NVRAM_SIZE, "Sun4u", ram_size, boot_device,
365 KERNEL_LOAD_ADDR, kernel_size,
366 kernel_cmdline,
367 INITRD_LOAD_ADDR, initrd_size,
368 /* XXX: need an option to load a NVRAM image */
369 0,
370 graphic_width, graphic_height, graphic_depth);
371
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372}
373
374QEMUMachine sun4u_machine = {
375 "sun4u",
376 "Sun4u platform",
377 sun4u_init,
378};