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24#include "qemu/osdep.h"
25#include "qemu/error-report.h"
26#include "qapi/error.h"
27#include "qemu-common.h"
28#include "cpu.h"
29#include "hw/hw.h"
30#include "qemu/timer.h"
31#include "hw/ptimer.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 *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 cpu = SPARC_CPU(cpu_create(machine->cpu_type));
126 env = &cpu->env;
127
128 cpu_sparc_set_id(env, 0);
129
130
131 reset_info = g_malloc0(sizeof(ResetData));
132 reset_info->cpu = cpu;
133 reset_info->sp = 0x40000000 + ram_size;
134 qemu_register_reset(main_cpu_reset, reset_info);
135
136
137 grlib_irqmp_create(0x80000200, env, &cpu_irqs, MAX_PILS, &leon3_set_pil_in);
138
139 env->qemu_irq_ack = leon3_irq_manager;
140
141
142 if ((uint64_t)ram_size > (1UL << 30)) {
143 error_report("Too much memory for this machine: %d, maximum 1G",
144 (unsigned int)(ram_size / (1024 * 1024)));
145 exit(1);
146 }
147
148 memory_region_allocate_system_memory(ram, NULL, "leon3.ram", ram_size);
149 memory_region_add_subregion(address_space_mem, 0x40000000, ram);
150
151
152 prom_size = 8 * 1024 * 1024;
153 memory_region_init_ram(prom, NULL, "Leon3.bios", prom_size, &error_fatal);
154 memory_region_set_readonly(prom, true);
155 memory_region_add_subregion(address_space_mem, 0x00000000, prom);
156
157
158 if (bios_name == NULL) {
159 bios_name = PROM_FILENAME;
160 }
161 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
162
163 if (filename) {
164 bios_size = get_image_size(filename);
165 } else {
166 bios_size = -1;
167 }
168
169 if (bios_size > prom_size) {
170 error_report("could not load prom '%s': file too big", filename);
171 exit(1);
172 }
173
174 if (bios_size > 0) {
175 ret = load_image_targphys(filename, 0x00000000, bios_size);
176 if (ret < 0 || ret > prom_size) {
177 error_report("could not load prom '%s'", filename);
178 exit(1);
179 }
180 } else if (kernel_filename == NULL && !qtest_enabled()) {
181 error_report("Can't read bios image %s", filename);
182 exit(1);
183 }
184 g_free(filename);
185
186
187 if (kernel_filename != NULL) {
188 long kernel_size;
189 uint64_t entry;
190
191 kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL,
192 1 , EM_SPARC, 0, 0);
193 if (kernel_size < 0) {
194 error_report("could not load kernel '%s'", kernel_filename);
195 exit(1);
196 }
197 if (bios_size <= 0) {
198
199 env->pc = entry;
200 env->npc = entry + 4;
201 reset_info->entry = entry;
202 }
203 }
204
205
206 grlib_gptimer_create(0x80000300, 2, CPU_CLK, cpu_irqs, 6);
207
208
209 if (serial_hds[0]) {
210 grlib_apbuart_create(0x80000100, serial_hds[0], cpu_irqs[3]);
211 }
212}
213
214static void leon3_generic_machine_init(MachineClass *mc)
215{
216 mc->desc = "Leon-3 generic";
217 mc->init = leon3_generic_hw_init;
218 mc->default_cpu_type = SPARC_CPU_TYPE_NAME("LEON3");
219}
220
221DEFINE_MACHINE("leon3_generic", leon3_generic_machine_init)
222