--- /dev/null
+/*
+ * QEMU Leon3 System Emulator
+ *
+ * Copyright (c) 2010-2011 AdaCore
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "hw/hw.h"
+#include "qemu/timer.h"
+#include "hw/ptimer.h"
+#include "sysemu/char.h"
+#include "sysemu/sysemu.h"
+#include "sysemu/qtest.h"
+#include "hw/boards.h"
+#include "hw/loader.h"
+#include "elf.h"
+#include "trace.h"
+#include "exec/address-spaces.h"
+
+#include "hw/sparc/grlib.h"
+
+/* Default system clock. */
+#define CPU_CLK (40 * 1000 * 1000)
+
+#define PROM_FILENAME "u-boot.bin"
+
+#define MAX_PILS 16
+
+typedef struct ResetData {
+ SPARCCPU *cpu;
+ uint32_t entry; /* save kernel entry in case of reset */
+ target_ulong sp; /* initial stack pointer */
+} ResetData;
+
+static void main_cpu_reset(void *opaque)
+{
+ ResetData *s = (ResetData *)opaque;
+ CPUState *cpu = CPU(s->cpu);
+ CPUSPARCState *env = &s->cpu->env;
+
+ cpu_reset(cpu);
+
+ cpu->halted = 0;
+ env->pc = s->entry;
+ env->npc = s->entry + 4;
+ env->regbase[6] = s->sp;
+}
+
+void leon3_irq_ack(void *irq_manager, int intno)
+{
+ grlib_irqmp_ack((DeviceState *)irq_manager, intno);
+}
+
+static void leon3_set_pil_in(void *opaque, uint32_t pil_in)
+{
+ CPUSPARCState *env = (CPUSPARCState *)opaque;
+ CPUState *cs;
+
+ assert(env != NULL);
+
+ env->pil_in = pil_in;
+
+ if (env->pil_in && (env->interrupt_index == 0 ||
+ (env->interrupt_index & ~15) == TT_EXTINT)) {
+ unsigned int i;
+
+ for (i = 15; i > 0; i--) {
+ if (env->pil_in & (1 << i)) {
+ int old_interrupt = env->interrupt_index;
+
+ env->interrupt_index = TT_EXTINT | i;
+ if (old_interrupt != env->interrupt_index) {
+ cs = CPU(sparc_env_get_cpu(env));
+ trace_leon3_set_irq(i);
+ cpu_interrupt(cs, CPU_INTERRUPT_HARD);
+ }
+ break;
+ }
+ }
+ } else if (!env->pil_in && (env->interrupt_index & ~15) == TT_EXTINT) {
+ cs = CPU(sparc_env_get_cpu(env));
+ trace_leon3_reset_irq(env->interrupt_index & 15);
+ env->interrupt_index = 0;
+ cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
+ }
+}
+
+static void leon3_generic_hw_init(MachineState *machine)
+{
+ ram_addr_t ram_size = machine->ram_size;
+ const char *cpu_model = machine->cpu_model;
+ const char *kernel_filename = machine->kernel_filename;
+ SPARCCPU *cpu;
+ CPUSPARCState *env;
+ MemoryRegion *address_space_mem = get_system_memory();
+ MemoryRegion *ram = g_new(MemoryRegion, 1);
+ MemoryRegion *prom = g_new(MemoryRegion, 1);
+ int ret;
+ char *filename;
+ qemu_irq *cpu_irqs = NULL;
+ int bios_size;
+ int prom_size;
+ ResetData *reset_info;
+
+ /* Init CPU */
+ if (!cpu_model) {
+ cpu_model = "LEON3";
+ }
+
+ cpu = cpu_sparc_init(cpu_model);
+ if (cpu == NULL) {
+ fprintf(stderr, "qemu: Unable to find Sparc CPU definition\n");
+ exit(1);
+ }
+ env = &cpu->env;
+
+ cpu_sparc_set_id(env, 0);
+
+ /* Reset data */
+ reset_info = g_malloc0(sizeof(ResetData));
+ reset_info->cpu = cpu;
+ reset_info->sp = 0x40000000 + ram_size;
+ qemu_register_reset(main_cpu_reset, reset_info);
+
+ /* Allocate IRQ manager */
+ grlib_irqmp_create(0x80000200, env, &cpu_irqs, MAX_PILS, &leon3_set_pil_in);
+
+ env->qemu_irq_ack = leon3_irq_manager;
+
+ /* Allocate RAM */
+ if ((uint64_t)ram_size > (1UL << 30)) {
+ fprintf(stderr,
+ "qemu: Too much memory for this machine: %d, maximum 1G\n",
+ (unsigned int)(ram_size / (1024 * 1024)));
+ exit(1);
+ }
+
+ memory_region_allocate_system_memory(ram, NULL, "leon3.ram", ram_size);
+ memory_region_add_subregion(address_space_mem, 0x40000000, ram);
+
+ /* Allocate BIOS */
+ prom_size = 8 * 1024 * 1024; /* 8Mb */
+ memory_region_init_ram(prom, NULL, "Leon3.bios", prom_size, &error_abort);
+ vmstate_register_ram_global(prom);
+ memory_region_set_readonly(prom, true);
+ memory_region_add_subregion(address_space_mem, 0x00000000, prom);
+
+ /* Load boot prom */
+ if (bios_name == NULL) {
+ bios_name = PROM_FILENAME;
+ }
+ filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
+
+ bios_size = get_image_size(filename);
+
+ if (bios_size > prom_size) {
+ fprintf(stderr, "qemu: could not load prom '%s': file too big\n",
+ filename);
+ exit(1);
+ }
+
+ if (bios_size > 0) {
+ ret = load_image_targphys(filename, 0x00000000, bios_size);
+ if (ret < 0 || ret > prom_size) {
+ fprintf(stderr, "qemu: could not load prom '%s'\n", filename);
+ exit(1);
+ }
+ } else if (kernel_filename == NULL && !qtest_enabled()) {
+ fprintf(stderr, "Can't read bios image %s\n", filename);
+ exit(1);
+ }
+ g_free(filename);
+
+ /* Can directly load an application. */
+ if (kernel_filename != NULL) {
+ long kernel_size;
+ uint64_t entry;
+
+ kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL,
+ 1 /* big endian */, ELF_MACHINE, 0);
+ if (kernel_size < 0) {
+ fprintf(stderr, "qemu: could not load kernel '%s'\n",
+ kernel_filename);
+ exit(1);
+ }
+ if (bios_size <= 0) {
+ /* If there is no bios/monitor, start the application. */
+ env->pc = entry;
+ env->npc = entry + 4;
+ reset_info->entry = entry;
+ }
+ }
+
+ /* Allocate timers */
+ grlib_gptimer_create(0x80000300, 2, CPU_CLK, cpu_irqs, 6);
+
+ /* Allocate uart */
+ if (serial_hds[0]) {
+ grlib_apbuart_create(0x80000100, serial_hds[0], cpu_irqs[3]);
+ }
+}
+
+static QEMUMachine leon3_generic_machine = {
+ .name = "leon3_generic",
+ .desc = "Leon-3 generic",
+ .init = leon3_generic_hw_init,
+};
+
+static void leon3_machine_init(void)
+{
+ qemu_register_machine(&leon3_generic_machine);
+}
+
+machine_init(leon3_machine_init);
Code Review / kvmfornfv.git / blobdiff