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/i2c/i2c.h"
  25
  26 static struct arm_boot_info cubieboard_binfo = {
  27     .loader_start = AW_A10_SDRAM_BASE,
  28     .board_id = 0x1008,
  29 };
  30
  31 static void cubieboard_init(MachineState *machine)
  32 {
  33     AwA10State *a10;
  34     Error *err = NULL;
  35     DriveInfo *di;
  36     BlockBackend *blk;
  37     BusState *bus;
  38     DeviceState *carddev;
  39     I2CBus *i2c;
  40
  41     /* BIOS is not supported by this board */
  42     if (machine->firmware) {
  43         error_report("BIOS not supported for this machine");
  44         exit(1);
  45     }
  46
  47     /* This board has fixed size RAM (512MiB or 1GiB) */
  48     if (machine->ram_size != 512 * MiB &&
  49         machine->ram_size != 1 * GiB) {
  50         error_report("This machine can only be used with 512MiB or 1GiB RAM");
  51         exit(1);
  52     }
  53
  54     /* Only allow Cortex-A8 for this board */
  55     if (strcmp(machine->cpu_type, ARM_CPU_TYPE_NAME("cortex-a8")) != 0) {
  56         error_report("This board can only be used with cortex-a8 CPU");
  57         exit(1);
  58     }
  59
  60     a10 = AW_A10(object_new(TYPE_AW_A10));
  61     object_property_add_child(OBJECT(machine), "soc", OBJECT(a10));
  62     object_unref(OBJECT(a10));
  63
  64     if (!object_property_set_int(OBJECT(&a10->emac), "phy-addr", 1, &err)) {
  65         error_reportf_err(err, "Couldn't set phy address: ");
  66         exit(1);
  67     }
  68
  69     if (!object_property_set_int(OBJECT(&a10->timer), "clk0-freq", 32768,
  70                                  &err)) {
  71         error_reportf_err(err, "Couldn't set clk0 frequency: ");
  72         exit(1);
  73     }
  74
  75     if (!object_property_set_int(OBJECT(&a10->timer), "clk1-freq", 24000000,
  76                                  &err)) {
  77         error_reportf_err(err, "Couldn't set clk1 frequency: ");
  78         exit(1);
  79     }
  80
  81     if (!qdev_realize(DEVICE(a10), NULL, &err)) {
  82         error_reportf_err(err, "Couldn't realize Allwinner A10: ");
  83         exit(1);
  84     }
  85
  86     /* Connect AXP 209 */
  87     i2c = I2C_BUS(qdev_get_child_bus(DEVICE(&a10->i2c0), "i2c"));
  88     i2c_slave_create_simple(i2c, "axp209_pmu", 0x34);
  89
  90     /* Retrieve SD bus */
  91     di = drive_get(IF_SD, 0, 0);
  92     blk = di ? blk_by_legacy_dinfo(di) : NULL;
  93     bus = qdev_get_child_bus(DEVICE(a10), "sd-bus");
  94
  95     /* Plug in SD card */
  96     carddev = qdev_new(TYPE_SD_CARD);
  97     qdev_prop_set_drive_err(carddev, "drive", blk, &error_fatal);
  98     qdev_realize_and_unref(carddev, bus, &error_fatal);
  99
 100     memory_region_add_subregion(get_system_memory(), AW_A10_SDRAM_BASE,
 101                                 machine->ram);
 102
 103     /* Load target kernel or start using BootROM */
 104     if (!machine->kernel_filename && blk && blk_is_available(blk)) {
 105         /* Use Boot ROM to copy data from SD card to SRAM */
 106         allwinner_a10_bootrom_setup(a10, blk);
 107     }
 108     /* TODO create and connect IDE devices for ide_drive_get() */
 109
 110     cubieboard_binfo.ram_size = machine->ram_size;
 111     arm_load_kernel(&a10->cpu, machine, &cubieboard_binfo);
 112 }
 113
 114 static void cubieboard_machine_init(MachineClass *mc)
 115 {
 116     mc->desc = "cubietech cubieboard (Cortex-A8)";
 117     mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a8");
 118     mc->default_ram_size = 1 * GiB;
 119     mc->init = cubieboard_init;
 120     mc->block_default_type = IF_IDE;
 121     mc->units_per_default_bus = 1;
 122     mc->ignore_memory_transaction_failures = true;
 123     mc->default_ram_id = "cubieboard.ram";
 124 }
 125
 126 DEFINE_MACHINE("cubieboard", cubieboard_machine_init)