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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 */
31static 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
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95static 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,
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98 const char *kernel_filename,
99 const char *kernel_cmdline,
100 const char *initrd_filename,
101 const char *cpu_model)
102{
103 CPUState *env, *envs[MAX_CPUS];
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;
111 ppc_def_t *def;
112 PCIBus *pci_bus;
113 MacIONVRAMState *nvr;
114 int vga_bios_size, bios_size;
115 qemu_irq *dummy_irq;
116 int pic_mem_index, nvram_mem_index, dbdma_mem_index, cuda_mem_index;
6ac0e82d 117 int ppc_boot_device = boot_device[0];
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118
119 linux_boot = (kernel_filename != NULL);
120
121 /* init CPUs */
122 env = cpu_init();
123 if (cpu_model == NULL)
124 cpu_model = "default";
125 ppc_find_by_name(cpu_model, &def);
126 if (def == NULL) {
127 cpu_abort(env, "Unable to find PowerPC CPU definition\n");
128 }
129 for (i = 0; i < smp_cpus; i++) {
130 cpu_ppc_register(env, def);
131 cpu_ppc_reset(env);
132 /* Set time-base frequency to 100 Mhz */
133 cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
134 env->osi_call = vga_osi_call;
135 qemu_register_reset(&cpu_ppc_reset, env);
136 register_savevm("cpu", 0, 3, cpu_save, cpu_load, env);
137 envs[i] = env;
138 }
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139 if (env->nip < 0xFFF80000) {
140 /* Special test for PowerPC 601:
141 * the boot vector is at 0xFFF00100, then we need a 1MB BIOS.
142 * But the NVRAM is located at 0xFFF04000...
143 */
144 cpu_abort(env, "G3BW Mac hardware can not handle 1 MB BIOS\n");
145 }
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146
147 /* allocate RAM */
148 cpu_register_physical_memory(0, ram_size, IO_MEM_RAM);
149
150 /* allocate and load BIOS */
151 bios_offset = ram_size + vga_ram_size;
152 if (bios_name == NULL)
153 bios_name = BIOS_FILENAME;
154 snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name);
155 bios_size = load_image(buf, phys_ram_base + bios_offset);
156 if (bios_size < 0 || bios_size > BIOS_SIZE) {
157 cpu_abort(env, "qemu: could not load PowerPC bios '%s'\n", buf);
158 exit(1);
159 }
160 bios_size = (bios_size + 0xfff) & ~0xfff;
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161 if (bios_size > 0x00080000) {
162 /* As the NVRAM is located at 0xFFF04000, we cannot use 1 MB BIOSes */
163 cpu_abort(env, "G3BW Mac hardware can not handle 1 MB BIOS\n");
164 }
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165 cpu_register_physical_memory((uint32_t)(-bios_size),
166 bios_size, bios_offset | IO_MEM_ROM);
167
168 /* allocate and load VGA BIOS */
169 vga_bios_offset = bios_offset + bios_size;
170 snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME);
171 vga_bios_size = load_image(buf, phys_ram_base + vga_bios_offset + 8);
172 if (vga_bios_size < 0) {
173 /* if no bios is present, we can still work */
174 fprintf(stderr, "qemu: warning: could not load VGA bios '%s'\n", buf);
175 vga_bios_size = 0;
176 } else {
177 /* set a specific header (XXX: find real Apple format for NDRV
178 drivers) */
179 phys_ram_base[vga_bios_offset] = 'N';
180 phys_ram_base[vga_bios_offset + 1] = 'D';
181 phys_ram_base[vga_bios_offset + 2] = 'R';
182 phys_ram_base[vga_bios_offset + 3] = 'V';
183 cpu_to_be32w((uint32_t *)(phys_ram_base + vga_bios_offset + 4),
184 vga_bios_size);
185 vga_bios_size += 8;
186 }
187 vga_bios_size = (vga_bios_size + 0xfff) & ~0xfff;
188
189 if (linux_boot) {
190 kernel_base = KERNEL_LOAD_ADDR;
191 /* now we can load the kernel */
192 kernel_size = load_image(kernel_filename, phys_ram_base + kernel_base);
193 if (kernel_size < 0) {
194 cpu_abort(env, "qemu: could not load kernel '%s'\n",
195 kernel_filename);
196 exit(1);
197 }
198 /* load initrd */
199 if (initrd_filename) {
200 initrd_base = INITRD_LOAD_ADDR;
201 initrd_size = load_image(initrd_filename,
202 phys_ram_base + initrd_base);
203 if (initrd_size < 0) {
204 cpu_abort(env, "qemu: could not load initial ram disk '%s'\n",
205 initrd_filename);
206 exit(1);
207 }
208 } else {
209 initrd_base = 0;
210 initrd_size = 0;
211 }
6ac0e82d 212 ppc_boot_device = 'm';
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213 } else {
214 kernel_base = 0;
215 kernel_size = 0;
216 initrd_base = 0;
217 initrd_size = 0;
218 }
219
220 isa_mem_base = 0x80000000;
221
222 /* Register 2 MB of ISA IO space */
223 isa_mmio_init(0xfe000000, 0x00200000);
224
225 /* XXX: we register only 1 output pin for heathrow PIC */
226 heathrow_irqs = qemu_mallocz(smp_cpus * sizeof(qemu_irq *));
227 heathrow_irqs[0] =
228 qemu_mallocz(smp_cpus * sizeof(qemu_irq) * 1);
229 /* Connect the heathrow PIC outputs to the 6xx bus */
230 for (i = 0; i < smp_cpus; i++) {
231 switch (PPC_INPUT(env)) {
232 case PPC_FLAGS_INPUT_6xx:
233 heathrow_irqs[i] = heathrow_irqs[0] + (i * 1);
234 heathrow_irqs[i][0] =
235 ((qemu_irq *)env->irq_inputs)[PPC6xx_INPUT_INT];
236 break;
237 default:
238 cpu_abort(env, "Bus model not supported on OldWorld Mac machine\n");
239 exit(1);
240 }
241 }
242
243 /* init basic PC hardware */
244 if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
245 cpu_abort(env, "Only 6xx bus is supported on heathrow machine\n");
246 exit(1);
247 }
248 pic = heathrow_pic_init(&pic_mem_index, 1, heathrow_irqs);
249 pci_bus = pci_grackle_init(0xfec00000, pic);
250 pci_vga_init(pci_bus, ds, phys_ram_base + ram_size,
251 ram_size, vga_ram_size,
252 vga_bios_offset, vga_bios_size);
253
254 /* XXX: suppress that */
255 dummy_irq = i8259_init(NULL);
256
257 /* XXX: use Mac Serial port */
258 serial_init(0x3f8, dummy_irq[4], serial_hds[0]);
259
260 for(i = 0; i < nb_nics; i++) {
261 if (!nd_table[i].model)
262 nd_table[i].model = "ne2k_pci";
263 pci_nic_init(pci_bus, &nd_table[i], -1);
264 }
265
266 pci_cmd646_ide_init(pci_bus, &bs_table[0], 0);
267
268 /* cuda also initialize ADB */
269 cuda_init(&cuda_mem_index, pic[0x12]);
270
271 adb_kbd_init(&adb_bus);
272 adb_mouse_init(&adb_bus);
273
74e91155 274 nvr = macio_nvram_init(&nvram_mem_index, 0x2000);
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275 pmac_format_nvram_partition(nvr, 0x2000);
276
277 dbdma_init(&dbdma_mem_index);
278
279 macio_init(pci_bus, 0x0017, 1, pic_mem_index, dbdma_mem_index,
74e91155 280 cuda_mem_index, nvr, 0, NULL);
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281
282 if (usb_enabled) {
283 usb_ohci_init_pci(pci_bus, 3, -1);
284 }
285
286 if (graphic_depth != 15 && graphic_depth != 32 && graphic_depth != 8)
287 graphic_depth = 15;
288
289 m48t59 = m48t59_init(dummy_irq[8], 0xFFF04000, 0x0074, NVRAM_SIZE, 59);
290 nvram.opaque = m48t59;
291 nvram.read_fn = &m48t59_read;
292 nvram.write_fn = &m48t59_write;
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293 PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "HEATHROW", ram_size,
294 ppc_boot_device, kernel_base, kernel_size,
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295 kernel_cmdline,
296 initrd_base, initrd_size,
297 /* XXX: need an option to load a NVRAM image */
298 0,
299 graphic_width, graphic_height, graphic_depth);
300 /* No PCI init: the BIOS will do it */
301
302 /* Special port to get debug messages from Open-Firmware */
303 register_ioport_write(0x0F00, 4, 1, &PPC_debug_write, NULL);
304}
305
306QEMUMachine heathrow_machine = {
307 "g3bw",
308 "Heathrow based PowerMAC",
309 ppc_heathrow_init,
310};