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11#include "qemu/osdep.h"
12#include "qemu/units.h"
13#include "qapi/error.h"
14#include "qemu-common.h"
15#include "cpu.h"
16#include "hw/mips/mips.h"
17#include "hw/mips/cpudevs.h"
18#include "hw/i386/pc.h"
19#include "hw/char/serial.h"
20#include "hw/isa/isa.h"
21#include "net/net.h"
22#include "hw/net/ne2000-isa.h"
23#include "sysemu/sysemu.h"
24#include "hw/boards.h"
25#include "hw/block/flash.h"
26#include "qemu/log.h"
27#include "hw/mips/bios.h"
28#include "hw/ide.h"
29#include "hw/loader.h"
30#include "elf.h"
31#include "hw/rtc/mc146818rtc.h"
32#include "hw/input/i8042.h"
33#include "hw/timer/i8254.h"
34#include "exec/address-spaces.h"
35#include "sysemu/qtest.h"
36#include "sysemu/reset.h"
37#include "sysemu/runstate.h"
38#include "qemu/error-report.h"
39
40#define MAX_IDE_BUS 2
41
42static const int ide_iobase[2] = { 0x1f0, 0x170 };
43static const int ide_iobase2[2] = { 0x3f6, 0x376 };
44static const int ide_irq[2] = { 14, 15 };
45
46static ISADevice *pit;
47
48
49
50static struct _loaderparams {
51 int ram_size;
52 const char *kernel_filename;
53 const char *kernel_cmdline;
54 const char *initrd_filename;
55} loaderparams;
56
57static void mips_qemu_write (void *opaque, hwaddr addr,
58 uint64_t val, unsigned size)
59{
60 if ((addr & 0xffff) == 0 && val == 42)
61 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
62 else if ((addr & 0xffff) == 4 && val == 42)
63 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
64}
65
66static uint64_t mips_qemu_read (void *opaque, hwaddr addr,
67 unsigned size)
68{
69 return 0;
70}
71
72static const MemoryRegionOps mips_qemu_ops = {
73 .read = mips_qemu_read,
74 .write = mips_qemu_write,
75 .endianness = DEVICE_NATIVE_ENDIAN,
76};
77
78typedef struct ResetData {
79 MIPSCPU *cpu;
80 uint64_t vector;
81} ResetData;
82
83static int64_t load_kernel(void)
84{
85 const size_t params_size = 264;
86 int64_t entry, kernel_high, initrd_size;
87 long kernel_size;
88 ram_addr_t initrd_offset;
89 uint32_t *params_buf;
90 int big_endian;
91
92#ifdef TARGET_WORDS_BIGENDIAN
93 big_endian = 1;
94#else
95 big_endian = 0;
96#endif
97 kernel_size = load_elf(loaderparams.kernel_filename, NULL,
98 cpu_mips_kseg0_to_phys, NULL,
99 (uint64_t *)&entry, NULL,
100 (uint64_t *)&kernel_high, big_endian,
101 EM_MIPS, 1, 0);
102 if (kernel_size >= 0) {
103 if ((entry & ~0x7fffffffULL) == 0x80000000)
104 entry = (int32_t)entry;
105 } else {
106 error_report("could not load kernel '%s': %s",
107 loaderparams.kernel_filename,
108 load_elf_strerror(kernel_size));
109 exit(1);
110 }
111
112
113 initrd_size = 0;
114 initrd_offset = 0;
115 if (loaderparams.initrd_filename) {
116 initrd_size = get_image_size (loaderparams.initrd_filename);
117 if (initrd_size > 0) {
118 initrd_offset = (kernel_high + ~INITRD_PAGE_MASK) & INITRD_PAGE_MASK;
119 if (initrd_offset + initrd_size > ram_size) {
120 error_report("memory too small for initial ram disk '%s'",
121 loaderparams.initrd_filename);
122 exit(1);
123 }
124 initrd_size = load_image_targphys(loaderparams.initrd_filename,
125 initrd_offset,
126 ram_size - initrd_offset);
127 }
128 if (initrd_size == (target_ulong) -1) {
129 error_report("could not load initial ram disk '%s'",
130 loaderparams.initrd_filename);
131 exit(1);
132 }
133 }
134
135
136 params_buf = g_malloc(params_size);
137
138 params_buf[0] = tswap32(ram_size);
139 params_buf[1] = tswap32(0x12345678);
140
141 if (initrd_size > 0) {
142 snprintf((char *)params_buf + 8, 256, "rd_start=0x%" PRIx64 " rd_size=%" PRId64 " %s",
143 cpu_mips_phys_to_kseg0(NULL, initrd_offset),
144 initrd_size, loaderparams.kernel_cmdline);
145 } else {
146 snprintf((char *)params_buf + 8, 256, "%s", loaderparams.kernel_cmdline);
147 }
148
149 rom_add_blob_fixed("params", params_buf, params_size,
150 16 * MiB - params_size);
151
152 g_free(params_buf);
153 return entry;
154}
155
156static void main_cpu_reset(void *opaque)
157{
158 ResetData *s = (ResetData *)opaque;
159 CPUMIPSState *env = &s->cpu->env;
160
161 cpu_reset(CPU(s->cpu));
162 env->active_tc.PC = s->vector;
163}
164
165static const int sector_len = 32 * KiB;
166static
167void mips_r4k_init(MachineState *machine)
168{
169 ram_addr_t ram_size = machine->ram_size;
170 const char *kernel_filename = machine->kernel_filename;
171 const char *kernel_cmdline = machine->kernel_cmdline;
172 const char *initrd_filename = machine->initrd_filename;
173 char *filename;
174 MemoryRegion *address_space_mem = get_system_memory();
175 MemoryRegion *ram = g_new(MemoryRegion, 1);
176 MemoryRegion *bios;
177 MemoryRegion *iomem = g_new(MemoryRegion, 1);
178 MemoryRegion *isa_io = g_new(MemoryRegion, 1);
179 MemoryRegion *isa_mem = g_new(MemoryRegion, 1);
180 int bios_size;
181 MIPSCPU *cpu;
182 CPUMIPSState *env;
183 ResetData *reset_info;
184 int i;
185 qemu_irq *i8259;
186 ISABus *isa_bus;
187 DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
188 DriveInfo *dinfo;
189 int be;
190
191
192 cpu = MIPS_CPU(cpu_create(machine->cpu_type));
193 env = &cpu->env;
194
195 reset_info = g_malloc0(sizeof(ResetData));
196 reset_info->cpu = cpu;
197 reset_info->vector = env->active_tc.PC;
198 qemu_register_reset(main_cpu_reset, reset_info);
199
200
201 if (ram_size > 256 * MiB) {
202 error_report("Too much memory for this machine: %" PRId64 "MB,"
203 " maximum 256MB", ram_size / MiB);
204 exit(1);
205 }
206 memory_region_allocate_system_memory(ram, NULL, "mips_r4k.ram", ram_size);
207
208 memory_region_add_subregion(address_space_mem, 0, ram);
209
210 memory_region_init_io(iomem, NULL, &mips_qemu_ops, NULL, "mips-qemu", 0x10000);
211 memory_region_add_subregion(address_space_mem, 0x1fbf0000, iomem);
212
213
214
215
216
217 if (bios_name == NULL)
218 bios_name = BIOS_FILENAME;
219 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
220 if (filename) {
221 bios_size = get_image_size(filename);
222 } else {
223 bios_size = -1;
224 }
225#ifdef TARGET_WORDS_BIGENDIAN
226 be = 1;
227#else
228 be = 0;
229#endif
230 if ((bios_size > 0) && (bios_size <= BIOS_SIZE)) {
231 bios = g_new(MemoryRegion, 1);
232 memory_region_init_ram(bios, NULL, "mips_r4k.bios", BIOS_SIZE,
233 &error_fatal);
234 memory_region_set_readonly(bios, true);
235 memory_region_add_subregion(get_system_memory(), 0x1fc00000, bios);
236
237 load_image_targphys(filename, 0x1fc00000, BIOS_SIZE);
238 } else if ((dinfo = drive_get(IF_PFLASH, 0, 0)) != NULL) {
239 uint32_t mips_rom = 0x00400000;
240 if (!pflash_cfi01_register(0x1fc00000, "mips_r4k.bios", mips_rom,
241 blk_by_legacy_dinfo(dinfo),
242 sector_len, 4, 0, 0, 0, 0, be)) {
243 fprintf(stderr, "qemu: Error registering flash memory.\n");
244 }
245 } else if (!qtest_enabled()) {
246
247 warn_report("could not load MIPS bios '%s'", bios_name);
248 }
249 g_free(filename);
250
251 if (kernel_filename) {
252 loaderparams.ram_size = ram_size;
253 loaderparams.kernel_filename = kernel_filename;
254 loaderparams.kernel_cmdline = kernel_cmdline;
255 loaderparams.initrd_filename = initrd_filename;
256 reset_info->vector = load_kernel();
257 }
258
259
260 cpu_mips_irq_init_cpu(cpu);
261 cpu_mips_clock_init(cpu);
262
263
264 memory_region_init_alias(isa_io, NULL, "isa-io",
265 get_system_io(), 0, 0x00010000);
266 memory_region_init(isa_mem, NULL, "isa-mem", 0x01000000);
267 memory_region_add_subregion(get_system_memory(), 0x14000000, isa_io);
268 memory_region_add_subregion(get_system_memory(), 0x10000000, isa_mem);
269 isa_bus = isa_bus_new(NULL, isa_mem, get_system_io(), &error_abort);
270
271
272 i8259 = i8259_init(isa_bus, env->irq[2]);
273 isa_bus_irqs(isa_bus, i8259);
274
275 mc146818_rtc_init(isa_bus, 2000, NULL);
276
277 pit = i8254_pit_init(isa_bus, 0x40, 0, NULL);
278
279 serial_hds_isa_init(isa_bus, 0, MAX_ISA_SERIAL_PORTS);
280
281 isa_vga_init(isa_bus);
282
283 if (nd_table[0].used)
284 isa_ne2000_init(isa_bus, 0x300, 9, &nd_table[0]);
285
286 ide_drive_get(hd, ARRAY_SIZE(hd));
287 for(i = 0; i < MAX_IDE_BUS; i++)
288 isa_ide_init(isa_bus, ide_iobase[i], ide_iobase2[i], ide_irq[i],
289 hd[MAX_IDE_DEVS * i],
290 hd[MAX_IDE_DEVS * i + 1]);
291
292 isa_create_simple(isa_bus, TYPE_I8042);
293}
294
295static void mips_machine_init(MachineClass *mc)
296{
297 mc->desc = "mips r4k platform";
298 mc->init = mips_r4k_init;
299 mc->block_default_type = IF_IDE;
300#ifdef TARGET_MIPS64
301 mc->default_cpu_type = MIPS_CPU_TYPE_NAME("R4000");
302#else
303 mc->default_cpu_type = MIPS_CPU_TYPE_NAME("24Kf");
304#endif
305
306}
307
308DEFINE_MACHINE("mips", mips_machine_init)
309
