]>
git.proxmox.com Git - qemu.git/blob - hw/mips_r4k.c
2 * QEMU/MIPS pseudo-board
4 * emulates a simple machine with ISA-like bus.
5 * ISA IO space mapped to the 0x14000000 (PHYS) and
6 * ISA memory at the 0x10000000 (PHYS, 16Mb in size).
7 * All peripherial devices are attached to this "bus" with
8 * the standard PC ISA addresses.
12 #ifdef TARGET_WORDS_BIGENDIAN
13 #define BIOS_FILENAME "mips_bios.bin"
15 #define BIOS_FILENAME "mipsel_bios.bin"
18 #ifdef MIPS_HAS_MIPS64
19 #define INITRD_LOAD_ADDR (int64_t)(int32_t)0x80800000
21 #define INITRD_LOAD_ADDR (int32_t)0x80800000
24 #define VIRT_TO_PHYS_ADDEND (-((int64_t)(int32_t)0x80000000))
26 static const int ide_iobase
[2] = { 0x1f0, 0x170 };
27 static const int ide_iobase2
[2] = { 0x3f6, 0x376 };
28 static const int ide_irq
[2] = { 14, 15 };
30 static int serial_io
[MAX_SERIAL_PORTS
] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
31 static int serial_irq
[MAX_SERIAL_PORTS
] = { 4, 3, 4, 3 };
35 static PITState
*pit
; /* PIT i8254 */
37 /*i8254 PIT is attached to the IRQ0 at PIC i8259 */
38 /*The PIC is attached to the MIPS CPU INT0 pin */
39 static void pic_irq_request(void *opaque
, int level
)
41 cpu_mips_irq_request(opaque
, 2, level
);
44 static void mips_qemu_writel (void *opaque
, target_phys_addr_t addr
,
47 if ((addr
& 0xffff) == 0 && val
== 42)
48 qemu_system_reset_request ();
49 else if ((addr
& 0xffff) == 4 && val
== 42)
50 qemu_system_shutdown_request ();
53 static uint32_t mips_qemu_readl (void *opaque
, target_phys_addr_t addr
)
58 static CPUWriteMemoryFunc
*mips_qemu_write
[] = {
64 static CPUReadMemoryFunc
*mips_qemu_read
[] = {
70 static int mips_qemu_iomemtype
= 0;
72 void load_kernel (CPUState
*env
, int ram_size
, const char *kernel_filename
,
73 const char *kernel_cmdline
,
74 const char *initrd_filename
)
77 long kernel_size
, initrd_size
;
79 kernel_size
= load_elf(kernel_filename
, VIRT_TO_PHYS_ADDEND
, &entry
);
80 if (kernel_size
>= 0) {
81 if ((entry
& ~0x7fffffffULL
) == 0x80000000)
82 entry
= (int32_t)entry
;
85 fprintf(stderr
, "qemu: could not load kernel '%s'\n",
92 if (initrd_filename
) {
93 initrd_size
= load_image(initrd_filename
,
94 phys_ram_base
+ INITRD_LOAD_ADDR
+ VIRT_TO_PHYS_ADDEND
);
95 if (initrd_size
== (target_ulong
) -1) {
96 fprintf(stderr
, "qemu: could not load initial ram disk '%s'\n",
102 /* Store command line. */
103 if (initrd_size
> 0) {
105 ret
= sprintf(phys_ram_base
+ (16 << 20) - 256,
106 "rd_start=0x" TARGET_FMT_lx
" rd_size=%li ",
109 strcpy (phys_ram_base
+ (16 << 20) - 256 + ret
, kernel_cmdline
);
112 strcpy (phys_ram_base
+ (16 << 20) - 256, kernel_cmdline
);
115 *(int32_t *)(phys_ram_base
+ (16 << 20) - 260) = tswap32 (0x12345678);
116 *(int32_t *)(phys_ram_base
+ (16 << 20) - 264) = tswap32 (ram_size
);
119 static void main_cpu_reset(void *opaque
)
121 CPUState
*env
= opaque
;
124 if (env
->kernel_filename
)
125 load_kernel (env
, env
->ram_size
, env
->kernel_filename
,
126 env
->kernel_cmdline
, env
->initrd_filename
);
130 void mips_r4k_init (int ram_size
, int vga_ram_size
, int boot_device
,
131 DisplayState
*ds
, const char **fd_filename
, int snapshot
,
132 const char *kernel_filename
, const char *kernel_cmdline
,
133 const char *initrd_filename
, const char *cpu_model
)
136 unsigned long bios_offset
;
144 if (cpu_model
== NULL
) {
145 #ifdef MIPS_HAS_MIPS64
151 if (mips_find_by_name(cpu_model
, &def
) != 0)
154 cpu_mips_register(env
, def
);
155 register_savevm("cpu", 0, 3, cpu_save
, cpu_load
, env
);
156 qemu_register_reset(main_cpu_reset
, env
);
159 cpu_register_physical_memory(0, ram_size
, IO_MEM_RAM
);
161 if (!mips_qemu_iomemtype
) {
162 mips_qemu_iomemtype
= cpu_register_io_memory(0, mips_qemu_read
,
163 mips_qemu_write
, NULL
);
165 cpu_register_physical_memory(0x1fbf0000, 0x10000, mips_qemu_iomemtype
);
167 /* Try to load a BIOS image. If this fails, we continue regardless,
168 but initialize the hardware ourselves. When a kernel gets
169 preloaded we also initialize the hardware, since the BIOS wasn't
171 bios_offset
= ram_size
+ vga_ram_size
;
172 snprintf(buf
, sizeof(buf
), "%s/%s", bios_dir
, BIOS_FILENAME
);
173 bios_size
= load_image(buf
, phys_ram_base
+ bios_offset
);
174 if ((bios_size
> 0) && (bios_size
<= BIOS_SIZE
)) {
175 cpu_register_physical_memory(0x1fc00000,
176 BIOS_SIZE
, bios_offset
| IO_MEM_ROM
);
179 fprintf(stderr
, "qemu: Warning, could not load MIPS bios '%s'\n",
183 if (kernel_filename
) {
184 load_kernel (env
, ram_size
, kernel_filename
, kernel_cmdline
,
186 env
->ram_size
= ram_size
;
187 env
->kernel_filename
= kernel_filename
;
188 env
->kernel_cmdline
= kernel_cmdline
;
189 env
->initrd_filename
= initrd_filename
;
192 /* Init CPU internal devices */
193 cpu_mips_clock_init(env
);
194 cpu_mips_irqctrl_init();
196 rtc_state
= rtc_init(0x70, 8);
198 /* Register 64 KB of ISA IO space at 0x14000000 */
199 isa_mmio_init(0x14000000, 0x00010000);
200 isa_mem_base
= 0x10000000;
202 isa_pic
= pic_init(pic_irq_request
, env
);
203 pit
= pit_init(0x40, 0);
205 for(i
= 0; i
< MAX_SERIAL_PORTS
; i
++) {
207 serial_init(&pic_set_irq_new
, isa_pic
,
208 serial_io
[i
], serial_irq
[i
], serial_hds
[i
]);
212 isa_vga_init(ds
, phys_ram_base
+ ram_size
, ram_size
,
215 if (nd_table
[0].vlan
) {
216 if (nd_table
[0].model
== NULL
217 || strcmp(nd_table
[0].model
, "ne2k_isa") == 0) {
218 isa_ne2000_init(0x300, 9, &nd_table
[0]);
220 fprintf(stderr
, "qemu: Unsupported NIC: %s\n", nd_table
[0].model
);
225 for(i
= 0; i
< 2; i
++)
226 isa_ide_init(ide_iobase
[i
], ide_iobase2
[i
], ide_irq
[i
],
227 bs_table
[2 * i
], bs_table
[2 * i
+ 1]);
230 ds1225y_init(0x9000, "nvram");
233 QEMUMachine mips_machine
= {