2 * QEMU Leon3 System Emulator
4 * Copyright (c) 2010-2011 AdaCore
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 #include "qemu/osdep.h"
25 #include "qapi/error.h"
26 #include "qemu-common.h"
29 #include "qemu/timer.h"
30 #include "hw/ptimer.h"
31 #include "sysemu/char.h"
32 #include "sysemu/sysemu.h"
33 #include "sysemu/qtest.h"
34 #include "hw/boards.h"
35 #include "hw/loader.h"
38 #include "exec/address-spaces.h"
40 #include "hw/sparc/grlib.h"
42 /* Default system clock. */
43 #define CPU_CLK (40 * 1000 * 1000)
45 #define PROM_FILENAME "u-boot.bin"
49 typedef struct ResetData
{
51 uint32_t entry
; /* save kernel entry in case of reset */
52 target_ulong sp
; /* initial stack pointer */
55 static void main_cpu_reset(void *opaque
)
57 ResetData
*s
= (ResetData
*)opaque
;
58 CPUState
*cpu
= CPU(s
->cpu
);
59 CPUSPARCState
*env
= &s
->cpu
->env
;
65 env
->npc
= s
->entry
+ 4;
66 env
->regbase
[6] = s
->sp
;
69 void leon3_irq_ack(void *irq_manager
, int intno
)
71 grlib_irqmp_ack((DeviceState
*)irq_manager
, intno
);
74 static void leon3_set_pil_in(void *opaque
, uint32_t pil_in
)
76 CPUSPARCState
*env
= (CPUSPARCState
*)opaque
;
83 if (env
->pil_in
&& (env
->interrupt_index
== 0 ||
84 (env
->interrupt_index
& ~15) == TT_EXTINT
)) {
87 for (i
= 15; i
> 0; i
--) {
88 if (env
->pil_in
& (1 << i
)) {
89 int old_interrupt
= env
->interrupt_index
;
91 env
->interrupt_index
= TT_EXTINT
| i
;
92 if (old_interrupt
!= env
->interrupt_index
) {
93 cs
= CPU(sparc_env_get_cpu(env
));
94 trace_leon3_set_irq(i
);
95 cpu_interrupt(cs
, CPU_INTERRUPT_HARD
);
100 } else if (!env
->pil_in
&& (env
->interrupt_index
& ~15) == TT_EXTINT
) {
101 cs
= CPU(sparc_env_get_cpu(env
));
102 trace_leon3_reset_irq(env
->interrupt_index
& 15);
103 env
->interrupt_index
= 0;
104 cpu_reset_interrupt(cs
, CPU_INTERRUPT_HARD
);
108 static void leon3_generic_hw_init(MachineState
*machine
)
110 ram_addr_t ram_size
= machine
->ram_size
;
111 const char *cpu_model
= machine
->cpu_model
;
112 const char *kernel_filename
= machine
->kernel_filename
;
115 MemoryRegion
*address_space_mem
= get_system_memory();
116 MemoryRegion
*ram
= g_new(MemoryRegion
, 1);
117 MemoryRegion
*prom
= g_new(MemoryRegion
, 1);
120 qemu_irq
*cpu_irqs
= NULL
;
123 ResetData
*reset_info
;
130 cpu
= cpu_sparc_init(cpu_model
);
132 fprintf(stderr
, "qemu: Unable to find Sparc CPU definition\n");
137 cpu_sparc_set_id(env
, 0);
140 reset_info
= g_malloc0(sizeof(ResetData
));
141 reset_info
->cpu
= cpu
;
142 reset_info
->sp
= 0x40000000 + ram_size
;
143 qemu_register_reset(main_cpu_reset
, reset_info
);
145 /* Allocate IRQ manager */
146 grlib_irqmp_create(0x80000200, env
, &cpu_irqs
, MAX_PILS
, &leon3_set_pil_in
);
148 env
->qemu_irq_ack
= leon3_irq_manager
;
151 if ((uint64_t)ram_size
> (1UL << 30)) {
153 "qemu: Too much memory for this machine: %d, maximum 1G\n",
154 (unsigned int)(ram_size
/ (1024 * 1024)));
158 memory_region_allocate_system_memory(ram
, NULL
, "leon3.ram", ram_size
);
159 memory_region_add_subregion(address_space_mem
, 0x40000000, ram
);
162 prom_size
= 8 * 1024 * 1024; /* 8Mb */
163 memory_region_init_ram(prom
, NULL
, "Leon3.bios", prom_size
, &error_fatal
);
164 vmstate_register_ram_global(prom
);
165 memory_region_set_readonly(prom
, true);
166 memory_region_add_subregion(address_space_mem
, 0x00000000, prom
);
169 if (bios_name
== NULL
) {
170 bios_name
= PROM_FILENAME
;
172 filename
= qemu_find_file(QEMU_FILE_TYPE_BIOS
, bios_name
);
175 bios_size
= get_image_size(filename
);
180 if (bios_size
> prom_size
) {
181 fprintf(stderr
, "qemu: could not load prom '%s': file too big\n",
187 ret
= load_image_targphys(filename
, 0x00000000, bios_size
);
188 if (ret
< 0 || ret
> prom_size
) {
189 fprintf(stderr
, "qemu: could not load prom '%s'\n", filename
);
192 } else if (kernel_filename
== NULL
&& !qtest_enabled()) {
193 fprintf(stderr
, "Can't read bios image %s\n", filename
);
198 /* Can directly load an application. */
199 if (kernel_filename
!= NULL
) {
203 kernel_size
= load_elf(kernel_filename
, NULL
, NULL
, &entry
, NULL
, NULL
,
204 1 /* big endian */, EM_SPARC
, 0, 0);
205 if (kernel_size
< 0) {
206 fprintf(stderr
, "qemu: could not load kernel '%s'\n",
210 if (bios_size
<= 0) {
211 /* If there is no bios/monitor, start the application. */
213 env
->npc
= entry
+ 4;
214 reset_info
->entry
= entry
;
218 /* Allocate timers */
219 grlib_gptimer_create(0x80000300, 2, CPU_CLK
, cpu_irqs
, 6);
223 grlib_apbuart_create(0x80000100, serial_hds
[0], cpu_irqs
[3]);
227 static void leon3_generic_machine_init(MachineClass
*mc
)
229 mc
->desc
= "Leon-3 generic";
230 mc
->init
= leon3_generic_hw_init
;
233 DEFINE_MACHINE("leon3_generic", leon3_generic_machine_init
)