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