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3cbee15b JM |
1 | /* |
2 | * QEMU OldWorld PowerMac (currently ~G3 B&W) hardware System Emulator | |
3 | * | |
4 | * Copyright (c) 2004-2007 Fabrice Bellard | |
5 | * Copyright (c) 2007 Jocelyn Mayer | |
6 | * | |
7 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
8 | * of this software and associated documentation files (the "Software"), to deal | |
9 | * in the Software without restriction, including without limitation the rights | |
10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
11 | * copies of the Software, and to permit persons to whom the Software is | |
12 | * furnished to do so, subject to the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice shall be included in | |
15 | * all copies or substantial portions of the Software. | |
16 | * | |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
23 | * THE SOFTWARE. | |
24 | */ | |
25 | #include "vl.h" | |
26 | #include "ppc_mac.h" | |
27 | ||
28 | /* temporary frame buffer OSI calls for the video.x driver. The right | |
29 | solution is to modify the driver to use VGA PCI I/Os */ | |
30 | /* XXX: to be removed. This is no way related to emulation */ | |
31 | static int vga_osi_call (CPUState *env) | |
32 | { | |
33 | static int vga_vbl_enabled; | |
34 | int linesize; | |
35 | ||
36 | // printf("osi_call R5=%d\n", env->gpr[5]); | |
37 | ||
38 | /* same handler as PearPC, coming from the original MOL video | |
39 | driver. */ | |
40 | switch(env->gpr[5]) { | |
41 | case 4: | |
42 | break; | |
43 | case 28: /* set_vmode */ | |
44 | if (env->gpr[6] != 1 || env->gpr[7] != 0) | |
45 | env->gpr[3] = 1; | |
46 | else | |
47 | env->gpr[3] = 0; | |
48 | break; | |
49 | case 29: /* get_vmode_info */ | |
50 | if (env->gpr[6] != 0) { | |
51 | if (env->gpr[6] != 1 || env->gpr[7] != 0) { | |
52 | env->gpr[3] = 1; | |
53 | break; | |
54 | } | |
55 | } | |
56 | env->gpr[3] = 0; | |
57 | env->gpr[4] = (1 << 16) | 1; /* num_vmodes, cur_vmode */ | |
58 | env->gpr[5] = (1 << 16) | 0; /* num_depths, cur_depth_mode */ | |
59 | env->gpr[6] = (graphic_width << 16) | graphic_height; /* w, h */ | |
60 | env->gpr[7] = 85 << 16; /* refresh rate */ | |
61 | env->gpr[8] = (graphic_depth + 7) & ~7; /* depth (round to byte) */ | |
62 | linesize = ((graphic_depth + 7) >> 3) * graphic_width; | |
63 | linesize = (linesize + 3) & ~3; | |
64 | env->gpr[9] = (linesize << 16) | 0; /* row_bytes, offset */ | |
65 | break; | |
66 | case 31: /* set_video power */ | |
67 | env->gpr[3] = 0; | |
68 | break; | |
69 | case 39: /* video_ctrl */ | |
70 | if (env->gpr[6] == 0 || env->gpr[6] == 1) | |
71 | vga_vbl_enabled = env->gpr[6]; | |
72 | env->gpr[3] = 0; | |
73 | break; | |
74 | case 47: | |
75 | break; | |
76 | case 59: /* set_color */ | |
77 | /* R6 = index, R7 = RGB */ | |
78 | env->gpr[3] = 0; | |
79 | break; | |
80 | case 64: /* get color */ | |
81 | /* R6 = index */ | |
82 | env->gpr[3] = 0; | |
83 | break; | |
84 | case 116: /* set hwcursor */ | |
85 | /* R6 = x, R7 = y, R8 = visible, R9 = data */ | |
86 | break; | |
87 | default: | |
88 | fprintf(stderr, "unsupported OSI call R5=" REGX "\n", env->gpr[5]); | |
89 | break; | |
90 | } | |
91 | ||
92 | return 1; /* osi_call handled */ | |
93 | } | |
94 | ||
6ac0e82d AZ |
95 | static void ppc_heathrow_init (int ram_size, int vga_ram_size, |
96 | const char *boot_device, DisplayState *ds, | |
97 | const char **fd_filename, int snapshot, | |
3cbee15b JM |
98 | const char *kernel_filename, |
99 | const char *kernel_cmdline, | |
100 | const char *initrd_filename, | |
101 | const char *cpu_model) | |
102 | { | |
aaed909a | 103 | CPUState *env = NULL, *envs[MAX_CPUS]; |
3cbee15b JM |
104 | char buf[1024]; |
105 | qemu_irq *pic, **heathrow_irqs; | |
106 | nvram_t nvram; | |
107 | m48t59_t *m48t59; | |
108 | int linux_boot, i; | |
109 | unsigned long bios_offset, vga_bios_offset; | |
110 | uint32_t kernel_base, kernel_size, initrd_base, initrd_size; | |
3cbee15b JM |
111 | PCIBus *pci_bus; |
112 | MacIONVRAMState *nvr; | |
113 | int vga_bios_size, bios_size; | |
114 | qemu_irq *dummy_irq; | |
115 | int pic_mem_index, nvram_mem_index, dbdma_mem_index, cuda_mem_index; | |
28c5af54 | 116 | int ppc_boot_device; |
3cbee15b JM |
117 | |
118 | linux_boot = (kernel_filename != NULL); | |
119 | ||
120 | /* init CPUs */ | |
3cbee15b JM |
121 | if (cpu_model == NULL) |
122 | cpu_model = "default"; | |
3cbee15b | 123 | for (i = 0; i < smp_cpus; i++) { |
aaed909a FB |
124 | env = cpu_init(cpu_model); |
125 | if (!env) { | |
126 | fprintf(stderr, "Unable to find PowerPC CPU definition\n"); | |
127 | exit(1); | |
128 | } | |
3cbee15b JM |
129 | /* Set time-base frequency to 100 Mhz */ |
130 | cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL); | |
131 | env->osi_call = vga_osi_call; | |
132 | qemu_register_reset(&cpu_ppc_reset, env); | |
133 | register_savevm("cpu", 0, 3, cpu_save, cpu_load, env); | |
134 | envs[i] = env; | |
135 | } | |
4c823cff JM |
136 | if (env->nip < 0xFFF80000) { |
137 | /* Special test for PowerPC 601: | |
138 | * the boot vector is at 0xFFF00100, then we need a 1MB BIOS. | |
139 | * But the NVRAM is located at 0xFFF04000... | |
140 | */ | |
141 | cpu_abort(env, "G3BW Mac hardware can not handle 1 MB BIOS\n"); | |
142 | } | |
3cbee15b JM |
143 | |
144 | /* allocate RAM */ | |
145 | cpu_register_physical_memory(0, ram_size, IO_MEM_RAM); | |
146 | ||
147 | /* allocate and load BIOS */ | |
148 | bios_offset = ram_size + vga_ram_size; | |
149 | if (bios_name == NULL) | |
150 | bios_name = BIOS_FILENAME; | |
151 | snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name); | |
152 | bios_size = load_image(buf, phys_ram_base + bios_offset); | |
153 | if (bios_size < 0 || bios_size > BIOS_SIZE) { | |
154 | cpu_abort(env, "qemu: could not load PowerPC bios '%s'\n", buf); | |
155 | exit(1); | |
156 | } | |
157 | bios_size = (bios_size + 0xfff) & ~0xfff; | |
4c823cff JM |
158 | if (bios_size > 0x00080000) { |
159 | /* As the NVRAM is located at 0xFFF04000, we cannot use 1 MB BIOSes */ | |
160 | cpu_abort(env, "G3BW Mac hardware can not handle 1 MB BIOS\n"); | |
161 | } | |
3cbee15b JM |
162 | cpu_register_physical_memory((uint32_t)(-bios_size), |
163 | bios_size, bios_offset | IO_MEM_ROM); | |
164 | ||
165 | /* allocate and load VGA BIOS */ | |
166 | vga_bios_offset = bios_offset + bios_size; | |
167 | snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME); | |
168 | vga_bios_size = load_image(buf, phys_ram_base + vga_bios_offset + 8); | |
169 | if (vga_bios_size < 0) { | |
170 | /* if no bios is present, we can still work */ | |
171 | fprintf(stderr, "qemu: warning: could not load VGA bios '%s'\n", buf); | |
172 | vga_bios_size = 0; | |
173 | } else { | |
174 | /* set a specific header (XXX: find real Apple format for NDRV | |
175 | drivers) */ | |
176 | phys_ram_base[vga_bios_offset] = 'N'; | |
177 | phys_ram_base[vga_bios_offset + 1] = 'D'; | |
178 | phys_ram_base[vga_bios_offset + 2] = 'R'; | |
179 | phys_ram_base[vga_bios_offset + 3] = 'V'; | |
180 | cpu_to_be32w((uint32_t *)(phys_ram_base + vga_bios_offset + 4), | |
181 | vga_bios_size); | |
182 | vga_bios_size += 8; | |
183 | } | |
184 | vga_bios_size = (vga_bios_size + 0xfff) & ~0xfff; | |
185 | ||
186 | if (linux_boot) { | |
187 | kernel_base = KERNEL_LOAD_ADDR; | |
188 | /* now we can load the kernel */ | |
189 | kernel_size = load_image(kernel_filename, phys_ram_base + kernel_base); | |
190 | if (kernel_size < 0) { | |
191 | cpu_abort(env, "qemu: could not load kernel '%s'\n", | |
192 | kernel_filename); | |
193 | exit(1); | |
194 | } | |
195 | /* load initrd */ | |
196 | if (initrd_filename) { | |
197 | initrd_base = INITRD_LOAD_ADDR; | |
198 | initrd_size = load_image(initrd_filename, | |
199 | phys_ram_base + initrd_base); | |
200 | if (initrd_size < 0) { | |
201 | cpu_abort(env, "qemu: could not load initial ram disk '%s'\n", | |
202 | initrd_filename); | |
203 | exit(1); | |
204 | } | |
205 | } else { | |
206 | initrd_base = 0; | |
207 | initrd_size = 0; | |
208 | } | |
6ac0e82d | 209 | ppc_boot_device = 'm'; |
3cbee15b JM |
210 | } else { |
211 | kernel_base = 0; | |
212 | kernel_size = 0; | |
213 | initrd_base = 0; | |
214 | initrd_size = 0; | |
28c5af54 JM |
215 | ppc_boot_device = '\0'; |
216 | for (i = 0; i < boot_device[i] != '\0'; i++) { | |
217 | ppc_boot_device = boot_device[i]; | |
218 | /* TOFIX: for now, the second IDE channel is not properly | |
219 | * emulated. The Mac floppy disk are not emulated. | |
220 | * For now, OHW cannot boot from the network. | |
221 | */ | |
222 | #if 0 | |
223 | if (ppc_boot_device >= 'a' && ppc_boot_device <= 'f') | |
224 | break; | |
225 | #else | |
226 | if (ppc_boot_device >= 'c' && ppc_boot_device <= 'd') | |
227 | break; | |
228 | #endif | |
229 | } | |
230 | if (ppc_boot_device == '\0') { | |
231 | fprintf(stderr, "No valid boot device for Mac99 machine\n"); | |
232 | exit(1); | |
233 | } | |
3cbee15b JM |
234 | } |
235 | ||
236 | isa_mem_base = 0x80000000; | |
237 | ||
238 | /* Register 2 MB of ISA IO space */ | |
239 | isa_mmio_init(0xfe000000, 0x00200000); | |
240 | ||
241 | /* XXX: we register only 1 output pin for heathrow PIC */ | |
242 | heathrow_irqs = qemu_mallocz(smp_cpus * sizeof(qemu_irq *)); | |
243 | heathrow_irqs[0] = | |
244 | qemu_mallocz(smp_cpus * sizeof(qemu_irq) * 1); | |
245 | /* Connect the heathrow PIC outputs to the 6xx bus */ | |
246 | for (i = 0; i < smp_cpus; i++) { | |
247 | switch (PPC_INPUT(env)) { | |
248 | case PPC_FLAGS_INPUT_6xx: | |
249 | heathrow_irqs[i] = heathrow_irqs[0] + (i * 1); | |
250 | heathrow_irqs[i][0] = | |
251 | ((qemu_irq *)env->irq_inputs)[PPC6xx_INPUT_INT]; | |
252 | break; | |
253 | default: | |
254 | cpu_abort(env, "Bus model not supported on OldWorld Mac machine\n"); | |
255 | exit(1); | |
256 | } | |
257 | } | |
258 | ||
259 | /* init basic PC hardware */ | |
260 | if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) { | |
261 | cpu_abort(env, "Only 6xx bus is supported on heathrow machine\n"); | |
262 | exit(1); | |
263 | } | |
264 | pic = heathrow_pic_init(&pic_mem_index, 1, heathrow_irqs); | |
265 | pci_bus = pci_grackle_init(0xfec00000, pic); | |
266 | pci_vga_init(pci_bus, ds, phys_ram_base + ram_size, | |
267 | ram_size, vga_ram_size, | |
268 | vga_bios_offset, vga_bios_size); | |
269 | ||
270 | /* XXX: suppress that */ | |
271 | dummy_irq = i8259_init(NULL); | |
272 | ||
273 | /* XXX: use Mac Serial port */ | |
274 | serial_init(0x3f8, dummy_irq[4], serial_hds[0]); | |
275 | ||
276 | for(i = 0; i < nb_nics; i++) { | |
277 | if (!nd_table[i].model) | |
278 | nd_table[i].model = "ne2k_pci"; | |
279 | pci_nic_init(pci_bus, &nd_table[i], -1); | |
280 | } | |
281 | ||
282 | pci_cmd646_ide_init(pci_bus, &bs_table[0], 0); | |
283 | ||
284 | /* cuda also initialize ADB */ | |
285 | cuda_init(&cuda_mem_index, pic[0x12]); | |
286 | ||
287 | adb_kbd_init(&adb_bus); | |
288 | adb_mouse_init(&adb_bus); | |
289 | ||
74e91155 | 290 | nvr = macio_nvram_init(&nvram_mem_index, 0x2000); |
3cbee15b JM |
291 | pmac_format_nvram_partition(nvr, 0x2000); |
292 | ||
293 | dbdma_init(&dbdma_mem_index); | |
28c5af54 | 294 | |
3cbee15b | 295 | macio_init(pci_bus, 0x0017, 1, pic_mem_index, dbdma_mem_index, |
74e91155 | 296 | cuda_mem_index, nvr, 0, NULL); |
3cbee15b JM |
297 | |
298 | if (usb_enabled) { | |
299 | usb_ohci_init_pci(pci_bus, 3, -1); | |
300 | } | |
301 | ||
302 | if (graphic_depth != 15 && graphic_depth != 32 && graphic_depth != 8) | |
303 | graphic_depth = 15; | |
304 | ||
305 | m48t59 = m48t59_init(dummy_irq[8], 0xFFF04000, 0x0074, NVRAM_SIZE, 59); | |
306 | nvram.opaque = m48t59; | |
307 | nvram.read_fn = &m48t59_read; | |
308 | nvram.write_fn = &m48t59_write; | |
6ac0e82d AZ |
309 | PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "HEATHROW", ram_size, |
310 | ppc_boot_device, kernel_base, kernel_size, | |
3cbee15b JM |
311 | kernel_cmdline, |
312 | initrd_base, initrd_size, | |
313 | /* XXX: need an option to load a NVRAM image */ | |
314 | 0, | |
315 | graphic_width, graphic_height, graphic_depth); | |
316 | /* No PCI init: the BIOS will do it */ | |
317 | ||
318 | /* Special port to get debug messages from Open-Firmware */ | |
319 | register_ioport_write(0x0F00, 4, 1, &PPC_debug_write, NULL); | |
320 | } | |
321 | ||
322 | QEMUMachine heathrow_machine = { | |
323 | "g3bw", | |
324 | "Heathrow based PowerMAC", | |
325 | ppc_heathrow_init, | |
326 | }; |