2 * QEMU OldWorld PowerMac (currently ~G3 Beige) hardware System Emulator
4 * Copyright (c) 2004-2007 Fabrice Bellard
5 * Copyright (c) 2007 Jocelyn Mayer
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:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
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
39 #define VGA_BIOS_SIZE 65536
40 #define CFG_ADDR 0xf0000510
42 /* temporary frame buffer OSI calls for the video.x driver. The right
43 solution is to modify the driver to use VGA PCI I/Os */
44 /* XXX: to be removed. This is no way related to emulation */
45 static int vga_osi_call (CPUState *env)
47 static int vga_vbl_enabled;
50 // printf("osi_call R5=" REGX "\n", ppc_dump_gpr(env, 5));
52 /* same handler as PearPC, coming from the original MOL video
57 case 28: /* set_vmode */
58 if (env->gpr[6] != 1 || env->gpr[7] != 0)
63 case 29: /* get_vmode_info */
64 if (env->gpr[6] != 0) {
65 if (env->gpr[6] != 1 || env->gpr[7] != 0) {
71 env->gpr[4] = (1 << 16) | 1; /* num_vmodes, cur_vmode */
72 env->gpr[5] = (1 << 16) | 0; /* num_depths, cur_depth_mode */
73 env->gpr[6] = (graphic_width << 16) | graphic_height; /* w, h */
74 env->gpr[7] = 85 << 16; /* refresh rate */
75 env->gpr[8] = (graphic_depth + 7) & ~7; /* depth (round to byte) */
76 linesize = ((graphic_depth + 7) >> 3) * graphic_width;
77 linesize = (linesize + 3) & ~3;
78 env->gpr[9] = (linesize << 16) | 0; /* row_bytes, offset */
80 case 31: /* set_video power */
83 case 39: /* video_ctrl */
84 if (env->gpr[6] == 0 || env->gpr[6] == 1)
85 vga_vbl_enabled = env->gpr[6];
90 case 59: /* set_color */
91 /* R6 = index, R7 = RGB */
94 case 64: /* get color */
98 case 116: /* set hwcursor */
99 /* R6 = x, R7 = y, R8 = visible, R9 = data */
102 fprintf(stderr, "unsupported OSI call R5=" REGX "\n",
103 ppc_dump_gpr(env, 5));
107 return 1; /* osi_call handled */
110 static void ppc_heathrow_init (ram_addr_t ram_size, int vga_ram_size,
111 const char *boot_device,
112 const char *kernel_filename,
113 const char *kernel_cmdline,
114 const char *initrd_filename,
115 const char *cpu_model)
117 CPUState *env = NULL, *envs[MAX_CPUS];
119 qemu_irq *pic, **heathrow_irqs;
123 ram_addr_t ram_offset, vga_ram_offset, bios_offset, vga_bios_offset;
124 uint32_t kernel_base, kernel_size, initrd_base, initrd_size;
126 MacIONVRAMState *nvr;
127 int vga_bios_size, bios_size;
129 int pic_mem_index, nvram_mem_index, dbdma_mem_index, cuda_mem_index;
130 int escc_mem_index, ide_mem_index[2];
132 BlockDriverState *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
136 linux_boot = (kernel_filename != NULL);
139 if (cpu_model == NULL)
141 for (i = 0; i < smp_cpus; i++) {
142 env = cpu_init(cpu_model);
144 fprintf(stderr, "Unable to find PowerPC CPU definition\n");
147 /* Set time-base frequency to 16.6 Mhz */
148 cpu_ppc_tb_init(env, 16600000UL);
149 env->osi_call = vga_osi_call;
150 qemu_register_reset(&cpu_ppc_reset, env);
153 if (env->nip < 0xFFF80000) {
154 /* Special test for PowerPC 601:
155 * the boot vector is at 0xFFF00100, then we need a 1MB BIOS.
156 * But the NVRAM is located at 0xFFF04000...
158 cpu_abort(env, "G3 Beige Mac hardware can not handle 1 MB BIOS\n");
162 if (ram_size > (2047 << 20)) {
164 "qemu: Too much memory for this machine: %d MB, maximum 2047 MB\n",
165 ((unsigned int)ram_size / (1 << 20)));
169 ram_offset = qemu_ram_alloc(ram_size);
170 cpu_register_physical_memory(0, ram_size, ram_offset);
172 /* allocate VGA RAM */
173 vga_ram_offset = qemu_ram_alloc(vga_ram_size);
175 /* allocate and load BIOS */
176 bios_offset = qemu_ram_alloc(BIOS_SIZE);
177 if (bios_name == NULL)
178 bios_name = PROM_FILENAME;
179 snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name);
180 cpu_register_physical_memory(PROM_ADDR, BIOS_SIZE, bios_offset | IO_MEM_ROM);
182 /* Load OpenBIOS (ELF) */
183 bios_size = load_elf(buf, 0, NULL, NULL, NULL);
184 if (bios_size < 0 || bios_size > BIOS_SIZE) {
185 cpu_abort(env, "qemu: could not load PowerPC bios '%s'\n", buf);
189 /* allocate and load VGA BIOS */
190 vga_bios_offset = qemu_ram_alloc(VGA_BIOS_SIZE);
191 snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME);
192 vga_bios_size = load_image(buf, phys_ram_base + vga_bios_offset + 8);
193 if (vga_bios_size < 0) {
194 /* if no bios is present, we can still work */
195 fprintf(stderr, "qemu: warning: could not load VGA bios '%s'\n", buf);
198 /* set a specific header (XXX: find real Apple format for NDRV
200 phys_ram_base[vga_bios_offset] = 'N';
201 phys_ram_base[vga_bios_offset + 1] = 'D';
202 phys_ram_base[vga_bios_offset + 2] = 'R';
203 phys_ram_base[vga_bios_offset + 3] = 'V';
204 cpu_to_be32w((uint32_t *)(phys_ram_base + vga_bios_offset + 4),
210 kernel_base = KERNEL_LOAD_ADDR;
211 /* now we can load the kernel */
212 kernel_size = load_elf(kernel_filename, kernel_base - 0xc0000000ULL,
215 kernel_size = load_aout(kernel_filename, kernel_base,
216 ram_size - kernel_base);
218 kernel_size = load_image_targphys(kernel_filename,
220 ram_size - kernel_base);
221 if (kernel_size < 0) {
222 cpu_abort(env, "qemu: could not load kernel '%s'\n",
227 if (initrd_filename) {
228 initrd_base = INITRD_LOAD_ADDR;
229 initrd_size = load_image(initrd_filename,
230 phys_ram_base + initrd_base);
231 if (initrd_size < 0) {
232 cpu_abort(env, "qemu: could not load initial ram disk '%s'\n",
240 ppc_boot_device = 'm';
246 ppc_boot_device = '\0';
247 for (i = 0; boot_device[i] != '\0'; i++) {
248 /* TOFIX: for now, the second IDE channel is not properly
249 * used by OHW. The Mac floppy disk are not emulated.
250 * For now, OHW cannot boot from the network.
253 if (boot_device[i] >= 'a' && boot_device[i] <= 'f') {
254 ppc_boot_device = boot_device[i];
258 if (boot_device[i] >= 'c' && boot_device[i] <= 'd') {
259 ppc_boot_device = boot_device[i];
264 if (ppc_boot_device == '\0') {
265 fprintf(stderr, "No valid boot device for G3 Beige machine\n");
270 isa_mem_base = 0x80000000;
272 /* Register 2 MB of ISA IO space */
273 isa_mmio_init(0xfe000000, 0x00200000);
275 /* XXX: we register only 1 output pin for heathrow PIC */
276 heathrow_irqs = qemu_mallocz(smp_cpus * sizeof(qemu_irq *));
278 qemu_mallocz(smp_cpus * sizeof(qemu_irq) * 1);
279 /* Connect the heathrow PIC outputs to the 6xx bus */
280 for (i = 0; i < smp_cpus; i++) {
281 switch (PPC_INPUT(env)) {
282 case PPC_FLAGS_INPUT_6xx:
283 heathrow_irqs[i] = heathrow_irqs[0] + (i * 1);
284 heathrow_irqs[i][0] =
285 ((qemu_irq *)env->irq_inputs)[PPC6xx_INPUT_INT];
288 cpu_abort(env, "Bus model not supported on OldWorld Mac machine\n");
293 /* init basic PC hardware */
294 if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
295 cpu_abort(env, "Only 6xx bus is supported on heathrow machine\n");
298 pic = heathrow_pic_init(&pic_mem_index, 1, heathrow_irqs);
299 pci_bus = pci_grackle_init(0xfec00000, pic);
300 pci_vga_init(pci_bus, phys_ram_base + vga_ram_offset,
301 vga_ram_offset, vga_ram_size,
302 vga_bios_offset, vga_bios_size);
304 /* XXX: suppress that */
305 dummy_irq = i8259_init(NULL);
307 escc_mem_index = escc_init(0x80013000, pic[0x0f], pic[0x10], serial_hds[0],
308 serial_hds[1], ESCC_CLOCK, 4);
310 for(i = 0; i < nb_nics; i++)
311 pci_nic_init(pci_bus, &nd_table[i], -1, "ne2k_pci");
313 /* First IDE channel is a CMD646 on the PCI bus */
315 if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
316 fprintf(stderr, "qemu: too many IDE bus\n");
319 index = drive_get_index(IF_IDE, 0, 0);
323 hd[0] = drives_table[index].bdrv;
324 index = drive_get_index(IF_IDE, 0, 1);
328 hd[1] = drives_table[index].bdrv;
329 hd[3] = hd[2] = NULL;
330 pci_cmd646_ide_init(pci_bus, hd, 0);
332 /* Second IDE channel is a MAC IDE on the MacIO bus */
333 index = drive_get_index(IF_IDE, 1, 0);
337 hd[0] = drives_table[index].bdrv;
338 index = drive_get_index(IF_IDE, 1, 1);
342 hd[1] = drives_table[index].bdrv;
343 ide_mem_index[0] = -1;
344 ide_mem_index[1] = pmac_ide_init(hd, pic[0x0D]);
346 /* cuda also initialize ADB */
347 cuda_init(&cuda_mem_index, pic[0x12]);
349 adb_kbd_init(&adb_bus);
350 adb_mouse_init(&adb_bus);
352 nvr = macio_nvram_init(&nvram_mem_index, 0x2000);
353 pmac_format_nvram_partition(nvr, 0x2000);
355 dbdma_init(&dbdma_mem_index);
357 macio_init(pci_bus, 0x0010, 1, pic_mem_index, dbdma_mem_index,
358 cuda_mem_index, nvr, 2, ide_mem_index, escc_mem_index);
361 usb_ohci_init_pci(pci_bus, 3, -1);
364 if (graphic_depth != 15 && graphic_depth != 32 && graphic_depth != 8)
367 m48t59 = m48t59_init(dummy_irq[8], 0xFFF04000, 0x0074, NVRAM_SIZE, 59);
368 nvram.opaque = m48t59;
369 nvram.read_fn = &m48t59_read;
370 nvram.write_fn = &m48t59_write;
371 PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "HEATHROW", ram_size,
372 ppc_boot_device, kernel_base, kernel_size,
374 initrd_base, initrd_size,
375 /* XXX: need an option to load a NVRAM image */
377 graphic_width, graphic_height, graphic_depth);
378 /* No PCI init: the BIOS will do it */
380 /* Special port to get debug messages from Open-Firmware */
381 register_ioport_write(0x0F00, 4, 1, &PPC_debug_write, NULL);
383 fw_cfg = fw_cfg_init(0, 0, CFG_ADDR, CFG_ADDR + 2);
384 fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
385 fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
386 fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, ARCH_HEATHROW);
389 QEMUMachine heathrow_machine = {
391 .desc = "Heathrow based PowerMAC",
392 .init = ppc_heathrow_init,
393 .ram_require = BIOS_SIZE + VGA_BIOS_SIZE + VGA_RAM_SIZE,
394 .max_cpus = MAX_CPUS,