hw/arm/cubieboard.c

   1 /*
   2  * cubieboard emulation
   3  *
   4  * Copyright (C) 2013 Li Guang
   5  * Written by Li Guang <lig.fnst@cn.fujitsu.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  15  * for more details.
  16  */
  17
  18 #include "qemu/osdep.h"
  19 #include "qapi/error.h"
  20 #include "qemu/error-report.h"
  21 #include "hw/boards.h"
  22 #include "hw/qdev-properties.h"
  23 #include "hw/arm/allwinner-a10.h"
  24 #include "hw/arm/boot.h"
  25 #include "hw/i2c/i2c.h"
  26
  27 static struct arm_boot_info cubieboard_binfo = {
  28     .loader_start = AW_A10_SDRAM_BASE,
  29     .board_id = 0x1008,
  30 };
  31
  32 static void cubieboard_init(MachineState *machine)
  33 {
  34     AwA10State *a10;
  35     Error *err = NULL;
  36     DriveInfo *di;
  37     BlockBackend *blk;
  38     BusState *bus;
  39     DeviceState *carddev;
  40     I2CBus *i2c;
  41
  42     /* BIOS is not supported by this board */
  43     if (machine->firmware) {
  44         error_report("BIOS not supported for this machine");
  45         exit(1);
  46     }
  47
  48     /* This board has fixed size RAM (512MiB or 1GiB) */
  49     if (machine->ram_size != 512 * MiB &&
  50         machine->ram_size != 1 * GiB) {
  51         error_report("This machine can only be used with 512MiB or 1GiB RAM");
  52         exit(1);
  53     }
  54
  55     a10 = AW_A10(object_new(TYPE_AW_A10));
  56     object_property_add_child(OBJECT(machine), "soc", OBJECT(a10));
  57     object_unref(OBJECT(a10));
  58
  59     if (!object_property_set_int(OBJECT(&a10->emac), "phy-addr", 1, &err)) {
  60         error_reportf_err(err, "Couldn't set phy address: ");
  61         exit(1);
  62     }
  63
  64     if (!object_property_set_int(OBJECT(&a10->timer), "clk0-freq", 32768,
  65                                  &err)) {
  66         error_reportf_err(err, "Couldn't set clk0 frequency: ");
  67         exit(1);
  68     }
  69
  70     if (!object_property_set_int(OBJECT(&a10->timer), "clk1-freq", 24000000,
  71                                  &err)) {
  72         error_reportf_err(err, "Couldn't set clk1 frequency: ");
  73         exit(1);
  74     }
  75
  76     if (!qdev_realize(DEVICE(a10), NULL, &err)) {
  77         error_reportf_err(err, "Couldn't realize Allwinner A10: ");
  78         exit(1);
  79     }
  80
  81     /* Connect AXP 209 */
  82     i2c = I2C_BUS(qdev_get_child_bus(DEVICE(&a10->i2c0), "i2c"));
  83     i2c_slave_create_simple(i2c, "axp209_pmu", 0x34);
  84
  85     /* Retrieve SD bus */
  86     di = drive_get(IF_SD, 0, 0);
  87     blk = di ? blk_by_legacy_dinfo(di) : NULL;
  88     bus = qdev_get_child_bus(DEVICE(a10), "sd-bus");
  89
  90     /* Plug in SD card */
  91     carddev = qdev_new(TYPE_SD_CARD);
  92     qdev_prop_set_drive_err(carddev, "drive", blk, &error_fatal);
  93     qdev_realize_and_unref(carddev, bus, &error_fatal);
  94
  95     memory_region_add_subregion(get_system_memory(), AW_A10_SDRAM_BASE,
  96                                 machine->ram);
  97
  98     /* Load target kernel or start using BootROM */
  99     if (!machine->kernel_filename && blk && blk_is_available(blk)) {
 100         /* Use Boot ROM to copy data from SD card to SRAM */
 101         allwinner_a10_bootrom_setup(a10, blk);
 102     }
 103     /* TODO create and connect IDE devices for ide_drive_get() */
 104
 105     cubieboard_binfo.ram_size = machine->ram_size;
 106     arm_load_kernel(&a10->cpu, machine, &cubieboard_binfo);
 107 }
 108
 109 static void cubieboard_machine_init(MachineClass *mc)
 110 {
 111     static const char * const valid_cpu_types[] = {
 112         ARM_CPU_TYPE_NAME("cortex-a8"),
 113         NULL
 114     };
 115
 116     mc->desc = "cubietech cubieboard (Cortex-A8)";
 117     mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a8");
 118     mc->valid_cpu_types = valid_cpu_types;
 119     mc->default_ram_size = 1 * GiB;
 120     mc->init = cubieboard_init;
 121     mc->block_default_type = IF_IDE;
 122     mc->units_per_default_bus = 1;
 123     mc->ignore_memory_transaction_failures = true;
 124     mc->default_ram_id = "cubieboard.ram";
 125 }
 126
 127 DEFINE_MACHINE("cubieboard", cubieboard_machine_init)