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
  33 static 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
  46 static 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
  77 static 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
  88 static const GraphicHwOps no_ops;
  89
  90 static 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
 111 static 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
 141 static 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
 148 DEFINE_MACHINE("puv3", puv3_machine_init)