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