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 /* Only allow Cortex-A8 for this board */ 56 if (strcmp(machine->cpu_type, ARM_CPU_TYPE_NAME("cortex-a8")) != 0) { 57 error_report("This board can only be used with cortex-a8 CPU"); 58 exit(1); 59 } 60 61 a10 = AW_A10(object_new(TYPE_AW_A10)); 62 object_property_add_child(OBJECT(machine), "soc", OBJECT(a10)); 63 object_unref(OBJECT(a10)); 64 65 if (!object_property_set_int(OBJECT(&a10->emac), "phy-addr", 1, &err)) { 66 error_reportf_err(err, "Couldn't set phy address: "); 67 exit(1); 68 } 69 70 if (!object_property_set_int(OBJECT(&a10->timer), "clk0-freq", 32768, 71 &err)) { 72 error_reportf_err(err, "Couldn't set clk0 frequency: "); 73 exit(1); 74 } 75 76 if (!object_property_set_int(OBJECT(&a10->timer), "clk1-freq", 24000000, 77 &err)) { 78 error_reportf_err(err, "Couldn't set clk1 frequency: "); 79 exit(1); 80 } 81 82 if (!qdev_realize(DEVICE(a10), NULL, &err)) { 83 error_reportf_err(err, "Couldn't realize Allwinner A10: "); 84 exit(1); 85 } 86 87 /* Connect AXP 209 */ 88 i2c = I2C_BUS(qdev_get_child_bus(DEVICE(&a10->i2c0), "i2c")); 89 i2c_slave_create_simple(i2c, "axp209_pmu", 0x34); 90 91 /* Retrieve SD bus */ 92 di = drive_get(IF_SD, 0, 0); 93 blk = di ? blk_by_legacy_dinfo(di) : NULL; 94 bus = qdev_get_child_bus(DEVICE(a10), "sd-bus"); 95 96 /* Plug in SD card */ 97 carddev = qdev_new(TYPE_SD_CARD); 98 qdev_prop_set_drive_err(carddev, "drive", blk, &error_fatal); 99 qdev_realize_and_unref(carddev, bus, &error_fatal); 100 101 memory_region_add_subregion(get_system_memory(), AW_A10_SDRAM_BASE, 102 machine->ram); 103 104 /* Load target kernel or start using BootROM */ 105 if (!machine->kernel_filename && blk && blk_is_available(blk)) { 106 /* Use Boot ROM to copy data from SD card to SRAM */ 107 allwinner_a10_bootrom_setup(a10, blk); 108 } 109 /* TODO create and connect IDE devices for ide_drive_get() */ 110 111 cubieboard_binfo.ram_size = machine->ram_size; 112 arm_load_kernel(&a10->cpu, machine, &cubieboard_binfo); 113 } 114 115 static void cubieboard_machine_init(MachineClass *mc) 116 { 117 mc->desc = "cubietech cubieboard (Cortex-A8)"; 118 mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a8"); 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) 128