2 * OpenRISC simulator for use as an IIS.
4 * Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
5 * Feng Gao <gf91597@gmail.com>
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
22 #include "hw/boards.h"
24 #include "hw/char/serial.h"
26 #include "hw/loader.h"
27 #include "exec/address-spaces.h"
28 #include "sysemu/sysemu.h"
29 #include "hw/sysbus.h"
30 #include "sysemu/qtest.h"
32 #define KERNEL_LOAD_ADDR 0x100
34 static void main_cpu_reset(void *opaque
)
36 OpenRISCCPU
*cpu
= opaque
;
41 static void openrisc_sim_net_init(MemoryRegion
*address_space
,
44 qemu_irq irq
, NICInfo
*nd
)
49 dev
= qdev_create(NULL
, "open_eth");
50 qdev_set_nic_properties(dev
, nd
);
51 qdev_init_nofail(dev
);
53 s
= SYS_BUS_DEVICE(dev
);
54 sysbus_connect_irq(s
, 0, irq
);
55 memory_region_add_subregion(address_space
, base
,
56 sysbus_mmio_get_region(s
, 0));
57 memory_region_add_subregion(address_space
, descriptors
,
58 sysbus_mmio_get_region(s
, 1));
61 static void cpu_openrisc_load_kernel(ram_addr_t ram_size
,
62 const char *kernel_filename
,
69 if (kernel_filename
&& !qtest_enabled()) {
70 kernel_size
= load_elf(kernel_filename
, NULL
, NULL
,
71 &elf_entry
, NULL
, NULL
, 1, ELF_MACHINE
, 1);
73 if (kernel_size
< 0) {
74 kernel_size
= load_uimage(kernel_filename
,
75 &entry
, NULL
, NULL
, NULL
, NULL
);
77 if (kernel_size
< 0) {
78 kernel_size
= load_image_targphys(kernel_filename
,
80 ram_size
- KERNEL_LOAD_ADDR
);
81 entry
= KERNEL_LOAD_ADDR
;
84 if (kernel_size
< 0) {
85 fprintf(stderr
, "QEMU: couldn't load the kernel '%s'\n",
93 static void openrisc_sim_init(MachineState
*machine
)
95 ram_addr_t ram_size
= machine
->ram_size
;
96 const char *cpu_model
= machine
->cpu_model
;
97 const char *kernel_filename
= machine
->kernel_filename
;
98 OpenRISCCPU
*cpu
= NULL
;
103 cpu_model
= "or1200";
106 for (n
= 0; n
< smp_cpus
; n
++) {
107 cpu
= cpu_openrisc_init(cpu_model
);
109 fprintf(stderr
, "Unable to find CPU definition!\n");
112 qemu_register_reset(main_cpu_reset
, cpu
);
116 ram
= g_malloc(sizeof(*ram
));
117 memory_region_init_ram(ram
, NULL
, "openrisc.ram", ram_size
, &error_abort
);
118 vmstate_register_ram_global(ram
);
119 memory_region_add_subregion(get_system_memory(), 0, ram
);
121 cpu_openrisc_pic_init(cpu
);
122 cpu_openrisc_clock_init(cpu
);
124 serial_mm_init(get_system_memory(), 0x90000000, 0, cpu
->env
.irq
[2],
125 115200, serial_hds
[0], DEVICE_NATIVE_ENDIAN
);
127 if (nd_table
[0].used
) {
128 openrisc_sim_net_init(get_system_memory(), 0x92000000,
129 0x92000400, cpu
->env
.irq
[4], nd_table
);
132 cpu_openrisc_load_kernel(ram_size
, kernel_filename
, cpu
);
135 static QEMUMachine openrisc_sim_machine
= {
137 .desc
= "or32 simulation",
138 .init
= openrisc_sim_init
,
143 static void openrisc_sim_machine_init(void)
145 qemu_register_machine(&openrisc_sim_machine
);
148 machine_init(openrisc_sim_machine_init
);