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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/sysemu.h"
32#include "sysemu/qtest.h"
33#include "hw/boards.h"
34#include "hw/loader.h"
35#include "elf.h"
36#include "trace.h"
37#include "exec/address-spaces.h"
38
39#include "hw/sparc/grlib.h"
40
41
42#define CPU_CLK (40 * 1000 * 1000)
43
44#define PROM_FILENAME "u-boot.bin"
45
46#define MAX_PILS 16
47
48typedef struct ResetData {
49 SPARCCPU *cpu;
50 uint32_t entry;
51 target_ulong sp;
52} ResetData;
53
54static void main_cpu_reset(void *opaque)
55{
56 ResetData *s = (ResetData *)opaque;
57 CPUState *cpu = CPU(s->cpu);
58 CPUSPARCState *env = &s->cpu->env;
59
60 cpu_reset(cpu);
61
62 cpu->halted = 0;
63 env->pc = s->entry;
64 env->npc = s->entry + 4;
65 env->regbase[6] = s->sp;
66}
67
68void leon3_irq_ack(void *irq_manager, int intno)
69{
70 grlib_irqmp_ack((DeviceState *)irq_manager, intno);
71}
72
73static void leon3_set_pil_in(void *opaque, uint32_t pil_in)
74{
75 CPUSPARCState *env = (CPUSPARCState *)opaque;
76 CPUState *cs;
77
78 assert(env != NULL);
79
80 env->pil_in = pil_in;
81
82 if (env->pil_in && (env->interrupt_index == 0 ||
83 (env->interrupt_index & ~15) == TT_EXTINT)) {
84 unsigned int i;
85
86 for (i = 15; i > 0; i--) {
87 if (env->pil_in & (1 << i)) {
88 int old_interrupt = env->interrupt_index;
89
90 env->interrupt_index = TT_EXTINT | i;
91 if (old_interrupt != env->interrupt_index) {
92 cs = CPU(sparc_env_get_cpu(env));
93 trace_leon3_set_irq(i);
94 cpu_interrupt(cs, CPU_INTERRUPT_HARD);
95 }
96 break;
97 }
98 }
99 } else if (!env->pil_in && (env->interrupt_index & ~15) == TT_EXTINT) {
100 cs = CPU(sparc_env_get_cpu(env));
101 trace_leon3_reset_irq(env->interrupt_index & 15);
102 env->interrupt_index = 0;
103 cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
104 }
105}
106
107static void leon3_generic_hw_init(MachineState *machine)
108{
109 ram_addr_t ram_size = machine->ram_size;
110 const char *cpu_model = machine->cpu_model;
111 const char *kernel_filename = machine->kernel_filename;
112 SPARCCPU *cpu;
113 CPUSPARCState *env;
114 MemoryRegion *address_space_mem = get_system_memory();
115 MemoryRegion *ram = g_new(MemoryRegion, 1);
116 MemoryRegion *prom = g_new(MemoryRegion, 1);
117 int ret;
118 char *filename;
119 qemu_irq *cpu_irqs = NULL;
120 int bios_size;
121 int prom_size;
122 ResetData *reset_info;
123
124
125 if (!cpu_model) {
126 cpu_model = "LEON3";
127 }
128
129 cpu = cpu_sparc_init(cpu_model);
130 if (cpu == NULL) {
131 fprintf(stderr, "qemu: Unable to find Sparc CPU definition\n");
132 exit(1);
133 }
134 env = &cpu->env;
135
136 cpu_sparc_set_id(env, 0);
137
138
139 reset_info = g_malloc0(sizeof(ResetData));
140 reset_info->cpu = cpu;
141 reset_info->sp = 0x40000000 + ram_size;
142 qemu_register_reset(main_cpu_reset, reset_info);
143
144
145 grlib_irqmp_create(0x80000200, env, &cpu_irqs, MAX_PILS, &leon3_set_pil_in);
146
147 env->qemu_irq_ack = leon3_irq_manager;
148
149
150 if ((uint64_t)ram_size > (1UL << 30)) {
151 fprintf(stderr,
152 "qemu: Too much memory for this machine: %d, maximum 1G\n",
153 (unsigned int)(ram_size / (1024 * 1024)));
154 exit(1);
155 }
156
157 memory_region_allocate_system_memory(ram, NULL, "leon3.ram", ram_size);
158 memory_region_add_subregion(address_space_mem, 0x40000000, ram);
159
160
161 prom_size = 8 * 1024 * 1024;
162 memory_region_init_ram(prom, NULL, "Leon3.bios", prom_size, &error_fatal);
163 memory_region_set_readonly(prom, true);
164 memory_region_add_subregion(address_space_mem, 0x00000000, prom);
165
166
167 if (bios_name == NULL) {
168 bios_name = PROM_FILENAME;
169 }
170 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
171
172 if (filename) {
173 bios_size = get_image_size(filename);
174 } else {
175 bios_size = -1;
176 }
177
178 if (bios_size > prom_size) {
179 fprintf(stderr, "qemu: could not load prom '%s': file too big\n",
180 filename);
181 exit(1);
182 }
183
184 if (bios_size > 0) {
185 ret = load_image_targphys(filename, 0x00000000, bios_size);
186 if (ret < 0 || ret > prom_size) {
187 fprintf(stderr, "qemu: could not load prom '%s'\n", filename);
188 exit(1);
189 }
190 } else if (kernel_filename == NULL && !qtest_enabled()) {
191 fprintf(stderr, "Can't read bios image %s\n", filename);
192 exit(1);
193 }
194 g_free(filename);
195
196
197 if (kernel_filename != NULL) {
198 long kernel_size;
199 uint64_t entry;
200
201 kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL,
202 1 , EM_SPARC, 0, 0);
203 if (kernel_size < 0) {
204 fprintf(stderr, "qemu: could not load kernel '%s'\n",
205 kernel_filename);
206 exit(1);
207 }
208 if (bios_size <= 0) {
209
210 env->pc = entry;
211 env->npc = entry + 4;
212 reset_info->entry = entry;
213 }
214 }
215
216
217 grlib_gptimer_create(0x80000300, 2, CPU_CLK, cpu_irqs, 6);
218
219
220 if (serial_hds[0]) {
221 grlib_apbuart_create(0x80000100, serial_hds[0], cpu_irqs[3]);
222 }
223}
224
225static void leon3_generic_machine_init(MachineClass *mc)
226{
227 mc->desc = "Leon-3 generic";
228 mc->init = leon3_generic_hw_init;
229}
230
231DEFINE_MACHINE("leon3_generic", leon3_generic_machine_init)
232
