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24#include "qemu/osdep.h"
25#include "qapi/error.h"
26#include "qemu-common.h"
27#include "cpu.h"
28#include "hw/hw.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"
36#include "elf.h"
37#include "trace.h"
38#include "exec/address-spaces.h"
39
40#include "hw/sparc/grlib.h"
41
42
43#define CPU_CLK (40 * 1000 * 1000)
44
45#define PROM_FILENAME "u-boot.bin"
46
47#define MAX_PILS 16
48
49typedef struct ResetData {
50 SPARCCPU *cpu;
51 uint32_t entry;
52 target_ulong sp;
53} ResetData;
54
55static void main_cpu_reset(void *opaque)
56{
57 ResetData *s = (ResetData *)opaque;
58 CPUState *cpu = CPU(s->cpu);
59 CPUSPARCState *env = &s->cpu->env;
60
61 cpu_reset(cpu);
62
63 cpu->halted = 0;
64 env->pc = s->entry;
65 env->npc = s->entry + 4;
66 env->regbase[6] = s->sp;
67}
68
69void leon3_irq_ack(void *irq_manager, int intno)
70{
71 grlib_irqmp_ack((DeviceState *)irq_manager, intno);
72}
73
74static void leon3_set_pil_in(void *opaque, uint32_t pil_in)
75{
76 CPUSPARCState *env = (CPUSPARCState *)opaque;
77 CPUState *cs;
78
79 assert(env != NULL);
80
81 env->pil_in = pil_in;
82
83 if (env->pil_in && (env->interrupt_index == 0 ||
84 (env->interrupt_index & ~15) == TT_EXTINT)) {
85 unsigned int i;
86
87 for (i = 15; i > 0; i--) {
88 if (env->pil_in & (1 << i)) {
89 int old_interrupt = env->interrupt_index;
90
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);
96 }
97 break;
98 }
99 }
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);
105 }
106}
107
108static void leon3_generic_hw_init(MachineState *machine)
109{
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;
113 SPARCCPU *cpu;
114 CPUSPARCState *env;
115 MemoryRegion *address_space_mem = get_system_memory();
116 MemoryRegion *ram = g_new(MemoryRegion, 1);
117 MemoryRegion *prom = g_new(MemoryRegion, 1);
118 int ret;
119 char *filename;
120 qemu_irq *cpu_irqs = NULL;
121 int bios_size;
122 int prom_size;
123 ResetData *reset_info;
124
125
126 if (!cpu_model) {
127 cpu_model = "LEON3";
128 }
129
130 cpu = cpu_sparc_init(cpu_model);
131 if (cpu == NULL) {
132 fprintf(stderr, "qemu: Unable to find Sparc CPU definition\n");
133 exit(1);
134 }
135 env = &cpu->env;
136
137 cpu_sparc_set_id(env, 0);
138
139
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);
144
145
146 grlib_irqmp_create(0x80000200, env, &cpu_irqs, MAX_PILS, &leon3_set_pil_in);
147
148 env->qemu_irq_ack = leon3_irq_manager;
149
150
151 if ((uint64_t)ram_size > (1UL << 30)) {
152 fprintf(stderr,
153 "qemu: Too much memory for this machine: %d, maximum 1G\n",
154 (unsigned int)(ram_size / (1024 * 1024)));
155 exit(1);
156 }
157
158 memory_region_allocate_system_memory(ram, NULL, "leon3.ram", ram_size);
159 memory_region_add_subregion(address_space_mem, 0x40000000, ram);
160
161
162 prom_size = 8 * 1024 * 1024;
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);
167
168
169 if (bios_name == NULL) {
170 bios_name = PROM_FILENAME;
171 }
172 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
173
174 if (filename) {
175 bios_size = get_image_size(filename);
176 } else {
177 bios_size = -1;
178 }
179
180 if (bios_size > prom_size) {
181 fprintf(stderr, "qemu: could not load prom '%s': file too big\n",
182 filename);
183 exit(1);
184 }
185
186 if (bios_size > 0) {
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);
190 exit(1);
191 }
192 } else if (kernel_filename == NULL && !qtest_enabled()) {
193 fprintf(stderr, "Can't read bios image %s\n", filename);
194 exit(1);
195 }
196 g_free(filename);
197
198
199 if (kernel_filename != NULL) {
200 long kernel_size;
201 uint64_t entry;
202
203 kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL,
204 1 , EM_SPARC, 0, 0);
205 if (kernel_size < 0) {
206 fprintf(stderr, "qemu: could not load kernel '%s'\n",
207 kernel_filename);
208 exit(1);
209 }
210 if (bios_size <= 0) {
211
212 env->pc = entry;
213 env->npc = entry + 4;
214 reset_info->entry = entry;
215 }
216 }
217
218
219 grlib_gptimer_create(0x80000300, 2, CPU_CLK, cpu_irqs, 6);
220
221
222 if (serial_hds[0]) {
223 grlib_apbuart_create(0x80000100, serial_hds[0], cpu_irqs[3]);
224 }
225}
226
227static void leon3_generic_machine_init(MachineClass *mc)
228{
229 mc->desc = "Leon-3 generic";
230 mc->init = leon3_generic_hw_init;
231}
232
233DEFINE_MACHINE("leon3_generic", leon3_generic_machine_init)
234
