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-common.h"
  13 #include "ui/console.h"
  14 #include "elf.h"
  15 #include "exec/address-spaces.h"
  16 #include "hw/sysbus.h"
  17 #include "hw/boards.h"
  18 #include "hw/loader.h"
  19 #include "hw/i386/pc.h"
  20 #include "qemu/error-report.h"
  21 #include "sysemu/qtest.h"
  22
  23 #undef DEBUG_PUV3
  24 #include "hw/unicore32/puv3.h"
  25
  26 #define KERNEL_LOAD_ADDR        0x03000000
  27 #define KERNEL_MAX_SIZE         0x00800000 /* Just a guess */
  28
  29 static void puv3_intc_cpu_handler(void *opaque, int irq, int level)
  30 {
  31     UniCore32CPU *cpu = opaque;
  32     CPUState *cs = CPU(cpu);
  33
  34     assert(irq == 0);
  35     if (level) {
  36         cpu_interrupt(cs, CPU_INTERRUPT_HARD);
  37     } else {
  38         cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
  39     }
  40 }
  41
  42 static void puv3_soc_init(CPUUniCore32State *env)
  43 {
  44     qemu_irq cpu_intc, irqs[PUV3_IRQS_NR];
  45     DeviceState *dev;
  46     MemoryRegion *i8042 = g_new(MemoryRegion, 1);
  47     int i;
  48
  49     /* Initialize interrupt controller */
  50     cpu_intc = qemu_allocate_irq(puv3_intc_cpu_handler,
  51                                  uc32_env_get_cpu(env), 0);
  52     dev = sysbus_create_simple("puv3_intc", PUV3_INTC_BASE, cpu_intc);
  53     for (i = 0; i < PUV3_IRQS_NR; i++) {
  54         irqs[i] = qdev_get_gpio_in(dev, i);
  55     }
  56
  57     /* Initialize minimal necessary devices for kernel booting */
  58     sysbus_create_simple("puv3_pm", PUV3_PM_BASE, NULL);
  59     sysbus_create_simple("puv3_dma", PUV3_DMA_BASE, NULL);
  60     sysbus_create_simple("puv3_ost", PUV3_OST_BASE, irqs[PUV3_IRQS_OST0]);
  61     sysbus_create_varargs("puv3_gpio", PUV3_GPIO_BASE,
  62             irqs[PUV3_IRQS_GPIOLOW0], irqs[PUV3_IRQS_GPIOLOW1],
  63             irqs[PUV3_IRQS_GPIOLOW2], irqs[PUV3_IRQS_GPIOLOW3],
  64             irqs[PUV3_IRQS_GPIOLOW4], irqs[PUV3_IRQS_GPIOLOW5],
  65             irqs[PUV3_IRQS_GPIOLOW6], irqs[PUV3_IRQS_GPIOLOW7],
  66             irqs[PUV3_IRQS_GPIOHIGH], NULL);
  67
  68     /* Keyboard (i8042), mouse disabled for nographic */
  69     i8042_mm_init(irqs[PUV3_IRQS_PS2_KBD], NULL, i8042, PUV3_REGS_OFFSET, 4);
  70     memory_region_add_subregion(get_system_memory(), PUV3_PS2_BASE, i8042);
  71 }
  72
  73 static void puv3_board_init(CPUUniCore32State *env, ram_addr_t ram_size)
  74 {
  75     MemoryRegion *ram_memory = g_new(MemoryRegion, 1);
  76
  77     /* SDRAM at address zero.  */
  78     memory_region_init_ram(ram_memory, NULL, "puv3.ram", ram_size,
  79                            &error_fatal);
  80     vmstate_register_ram_global(ram_memory);
  81     memory_region_add_subregion(get_system_memory(), 0, ram_memory);
  82 }
  83
  84 static const GraphicHwOps no_ops;
  85
  86 static void puv3_load_kernel(const char *kernel_filename)
  87 {
  88     int size;
  89
  90     if (kernel_filename == NULL && qtest_enabled()) {
  91         return;
  92     }
  93     assert(kernel_filename != NULL);
  94
  95     /* only zImage format supported */
  96     size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR,
  97             KERNEL_MAX_SIZE);
  98     if (size < 0) {
  99         error_report("Load kernel error: '%s'", kernel_filename);
 100         exit(1);
 101     }
 102
 103     /* cheat curses that we have a graphic console, only under ocd console */
 104     graphic_console_init(NULL, 0, &no_ops, NULL);
 105 }
 106
 107 static void puv3_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     const char *initrd_filename = machine->initrd_filename;
 113     CPUUniCore32State *env;
 114     UniCore32CPU *cpu;
 115
 116     if (initrd_filename) {
 117         error_report("Please use kernel built-in initramdisk");
 118         exit(1);
 119     }
 120
 121     if (!cpu_model) {
 122         cpu_model = "UniCore-II";
 123     }
 124
 125     cpu = uc32_cpu_init(cpu_model);
 126     if (!cpu) {
 127         error_report("Unable to find CPU definition");
 128         exit(1);
 129     }
 130     env = &cpu->env;
 131
 132     puv3_soc_init(env);
 133     puv3_board_init(env, ram_size);
 134     puv3_load_kernel(kernel_filename);
 135 }
 136
 137 static void puv3_machine_init(MachineClass *mc)
 138 {
 139     mc->desc = "PKUnity Version-3 based on UniCore32";
 140     mc->init = puv3_init;
 141     mc->is_default = 1;
 142 }
 143
 144 DEFINE_MACHINE("puv3", puv3_machine_init)