LXR qemu/hw/unicore32/puv3.c

   1/*
   2 * Generic PKUnity SoC machine and board descriptor
   3 *
   4 * Copyright (C) 2010-2012 Guan Xuetao
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License version 2 as
   8 * published by the Free Software Foundation, or any later version.
   9 * See the COPYING file in the top-level directory.
  10 */
  11
  12#include "qemu/osdep.h"
  13#include "qapi/error.h"
  14#include "qemu-common.h"
  15#include "cpu.h"
  16#include "qemu-common.h"
  17#include "ui/console.h"
  18#include "elf.h"
  19#include "exec/address-spaces.h"
  20#include "hw/sysbus.h"
  21#include "hw/boards.h"
  22#include "hw/loader.h"
  23#include "hw/i386/pc.h"
  24#include "qemu/error-report.h"
  25#include "sysemu/qtest.h"
  26
  27#undef DEBUG_PUV3
  28#include "hw/unicore32/puv3.h"
  29
  30#define KERNEL_LOAD_ADDR        0x03000000
  31#define KERNEL_MAX_SIZE         0x00800000 /* Just a guess */
  32
  33static void puv3_intc_cpu_handler(void *opaque, int irq, int level)
  34{
  35    UniCore32CPU *cpu = opaque;
  36    CPUState *cs = CPU(cpu);
  37
  38    assert(irq == 0);
  39    if (level) {
  40        cpu_interrupt(cs, CPU_INTERRUPT_HARD);
  41    } else {
  42        cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
  43    }
  44}
  45
  46static void puv3_soc_init(CPUUniCore32State *env)
  47{
  48    qemu_irq cpu_intc, irqs[PUV3_IRQS_NR];
  49    DeviceState *dev;
  50    MemoryRegion *i8042 = g_new(MemoryRegion, 1);
  51    int i;
  52
  53    /* Initialize interrupt controller */
  54    cpu_intc = qemu_allocate_irq(puv3_intc_cpu_handler,
  55                                 uc32_env_get_cpu(env), 0);
  56    dev = sysbus_create_simple("puv3_intc", PUV3_INTC_BASE, cpu_intc);
  57    for (i = 0; i < PUV3_IRQS_NR; i++) {
  58        irqs[i] = qdev_get_gpio_in(dev, i);
  59    }
  60
  61    /* Initialize minimal necessary devices for kernel booting */
  62    sysbus_create_simple("puv3_pm", PUV3_PM_BASE, NULL);
  63    sysbus_create_simple("puv3_dma", PUV3_DMA_BASE, NULL);
  64    sysbus_create_simple("puv3_ost", PUV3_OST_BASE, irqs[PUV3_IRQS_OST0]);
  65    sysbus_create_varargs("puv3_gpio", PUV3_GPIO_BASE,
  66            irqs[PUV3_IRQS_GPIOLOW0], irqs[PUV3_IRQS_GPIOLOW1],
  67            irqs[PUV3_IRQS_GPIOLOW2], irqs[PUV3_IRQS_GPIOLOW3],
  68            irqs[PUV3_IRQS_GPIOLOW4], irqs[PUV3_IRQS_GPIOLOW5],
  69            irqs[PUV3_IRQS_GPIOLOW6], irqs[PUV3_IRQS_GPIOLOW7],
  70            irqs[PUV3_IRQS_GPIOHIGH], NULL);
  71
  72    /* Keyboard (i8042), mouse disabled for nographic */
  73    i8042_mm_init(irqs[PUV3_IRQS_PS2_KBD], NULL, i8042, PUV3_REGS_OFFSET, 4);
  74    memory_region_add_subregion(get_system_memory(), PUV3_PS2_BASE, i8042);
  75}
  76
  77static void puv3_board_init(CPUUniCore32State *env, ram_addr_t ram_size)
  78{
  79    MemoryRegion *ram_memory = g_new(MemoryRegion, 1);
  80
  81    /* SDRAM at address zero.  */
  82    memory_region_init_ram(ram_memory, NULL, "puv3.ram", ram_size,
  83                           &error_fatal);
  84    vmstate_register_ram_global(ram_memory);
  85    memory_region_add_subregion(get_system_memory(), 0, ram_memory);
  86}
  87
  88static const GraphicHwOps no_ops;
  89
  90static void puv3_load_kernel(const char *kernel_filename)
  91{
  92    int size;
  93
  94    if (kernel_filename == NULL && qtest_enabled()) {
  95        return;
  96    }
  97    assert(kernel_filename != NULL);
  98
  99    /* only zImage format supported */
 100    size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR,
 101            KERNEL_MAX_SIZE);
 102    if (size < 0) {
 103        error_report("Load kernel error: '%s'", kernel_filename);
 104        exit(1);
 105    }
 106
 107    /* cheat curses that we have a graphic console, only under ocd console */
 108    graphic_console_init(NULL, 0, &no_ops, NULL);
 109}
 110
 111static void puv3_init(MachineState *machine)
 112{
 113    ram_addr_t ram_size = machine->ram_size;
 114    const char *cpu_model = machine->cpu_model;
 115    const char *kernel_filename = machine->kernel_filename;
 116    const char *initrd_filename = machine->initrd_filename;
 117    CPUUniCore32State *env;
 118    UniCore32CPU *cpu;
 119
 120    if (initrd_filename) {
 121        error_report("Please use kernel built-in initramdisk");
 122        exit(1);
 123    }
 124
 125    if (!cpu_model) {
 126        cpu_model = "UniCore-II";
 127    }
 128
 129    cpu = uc32_cpu_init(cpu_model);
 130    if (!cpu) {
 131        error_report("Unable to find CPU definition");
 132        exit(1);
 133    }
 134    env = &cpu->env;
 135
 136    puv3_soc_init(env);
 137    puv3_board_init(env, ram_size);
 138    puv3_load_kernel(kernel_filename);
 139}
 140
 141static void puv3_machine_init(MachineClass *mc)
 142{
 143    mc->desc = "PKUnity Version-3 based on UniCore32";
 144    mc->init = puv3_init;
 145    mc->is_default = 1;
 146}
 147
 148DEFINE_MACHINE("puv3", puv3_machine_init)
 149