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 "sysemu/qtest.h"
  21
  22 #undef DEBUG_PUV3
  23 #include "hw/unicore32/puv3.h"
  24
  25 #define KERNEL_LOAD_ADDR        0x03000000
  26 #define KERNEL_MAX_SIZE         0x00800000 /* Just a guess */
  27
  28 static void puv3_intc_cpu_handler(void *opaque, int irq, int level)
  29 {
  30     UniCore32CPU *cpu = opaque;
  31     CPUState *cs = CPU(cpu);
  32
  33     assert(irq == 0);
  34     if (level) {
  35         cpu_interrupt(cs, CPU_INTERRUPT_HARD);
  36     } else {
  37         cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
  38     }
  39 }
  40
  41 static void puv3_soc_init(CPUUniCore32State *env)
  42 {
  43     qemu_irq cpu_intc, irqs[PUV3_IRQS_NR];
  44     DeviceState *dev;
  45     MemoryRegion *i8042 = g_new(MemoryRegion, 1);
  46     int i;
  47
  48     /* Initialize interrupt controller */
  49     cpu_intc = qemu_allocate_irq(puv3_intc_cpu_handler,
  50                                  uc32_env_get_cpu(env), 0);
  51     dev = sysbus_create_simple("puv3_intc", PUV3_INTC_BASE, cpu_intc);
  52     for (i = 0; i < PUV3_IRQS_NR; i++) {
  53         irqs[i] = qdev_get_gpio_in(dev, i);
  54     }
  55
  56     /* Initialize minimal necessary devices for kernel booting */
  57     sysbus_create_simple("puv3_pm", PUV3_PM_BASE, NULL);
  58     sysbus_create_simple("puv3_dma", PUV3_DMA_BASE, NULL);
  59     sysbus_create_simple("puv3_ost", PUV3_OST_BASE, irqs[PUV3_IRQS_OST0]);
  60     sysbus_create_varargs("puv3_gpio", PUV3_GPIO_BASE,
  61             irqs[PUV3_IRQS_GPIOLOW0], irqs[PUV3_IRQS_GPIOLOW1],
  62             irqs[PUV3_IRQS_GPIOLOW2], irqs[PUV3_IRQS_GPIOLOW3],
  63             irqs[PUV3_IRQS_GPIOLOW4], irqs[PUV3_IRQS_GPIOLOW5],
  64             irqs[PUV3_IRQS_GPIOLOW6], irqs[PUV3_IRQS_GPIOLOW7],
  65             irqs[PUV3_IRQS_GPIOHIGH], NULL);
  66
  67     /* Keyboard (i8042), mouse disabled for nographic */
  68     i8042_mm_init(irqs[PUV3_IRQS_PS2_KBD], NULL, i8042, PUV3_REGS_OFFSET, 4);
  69     memory_region_add_subregion(get_system_memory(), PUV3_PS2_BASE, i8042);
  70 }
  71
  72 static void puv3_board_init(CPUUniCore32State *env, ram_addr_t ram_size)
  73 {
  74     MemoryRegion *ram_memory = g_new(MemoryRegion, 1);
  75
  76     /* SDRAM at address zero.  */
  77     memory_region_init_ram(ram_memory, NULL, "puv3.ram", ram_size,
  78                            &error_abort);
  79     vmstate_register_ram_global(ram_memory);
  80     memory_region_add_subregion(get_system_memory(), 0, ram_memory);
  81 }
  82
  83 static const GraphicHwOps no_ops;
  84
  85 static void puv3_load_kernel(const char *kernel_filename)
  86 {
  87     int size;
  88
  89     if (kernel_filename == NULL && qtest_enabled()) {
  90         return;
  91     }
  92     assert(kernel_filename != NULL);
  93
  94     /* only zImage format supported */
  95     size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR,
  96             KERNEL_MAX_SIZE);
  97     if (size < 0) {
  98         hw_error("Load kernel error: '%s'\n", kernel_filename);
  99     }
 100
 101     /* cheat curses that we have a graphic console, only under ocd console */
 102     graphic_console_init(NULL, 0, &no_ops, NULL);
 103 }
 104
 105 static void puv3_init(MachineState *machine)
 106 {
 107     ram_addr_t ram_size = machine->ram_size;
 108     const char *cpu_model = machine->cpu_model;
 109     const char *kernel_filename = machine->kernel_filename;
 110     const char *initrd_filename = machine->initrd_filename;
 111     CPUUniCore32State *env;
 112     UniCore32CPU *cpu;
 113
 114     if (initrd_filename) {
 115         hw_error("Please use kernel built-in initramdisk.\n");
 116     }
 117
 118     if (!cpu_model) {
 119         cpu_model = "UniCore-II";
 120     }
 121
 122     cpu = uc32_cpu_init(cpu_model);
 123     if (!cpu) {
 124         hw_error("Unable to find CPU definition\n");
 125     }
 126     env = &cpu->env;
 127
 128     puv3_soc_init(env);
 129     puv3_board_init(env, ram_size);
 130     puv3_load_kernel(kernel_filename);
 131 }
 132
 133 static QEMUMachine puv3_machine = {
 134     .name = "puv3",
 135     .desc = "PKUnity Version-3 based on UniCore32",
 136     .init = puv3_init,
 137     .is_default = 1,
 138 };
 139
 140 static void puv3_machine_init(void)
 141 {
 142     qemu_register_machine(&puv3_machine);
 143 }
 144
 145 machine_init(puv3_machine_init)