hw/arm/sabrelite.c

   1 /*
   2  * SABRELITE Board System emulation.
   3  *
   4  * Copyright (c) 2015 Jean-Christophe Dubois <jcd@tribudubois.net>
   5  *
   6  * This code is licensed under the GPL, version 2 or later.
   7  * See the file `COPYING' in the top level directory.
   8  *
   9  * It (partially) emulates a sabrelite board, with a Freescale
  10  * i.MX6 SoC
  11  */
  12
  13 #include "qemu/osdep.h"
  14 #include "qapi/error.h"
  15 #include "hw/arm/fsl-imx6.h"
  16 #include "hw/arm/boot.h"
  17 #include "hw/boards.h"
  18 #include "hw/qdev-properties.h"
  19 #include "qemu/error-report.h"
  20 #include "sysemu/qtest.h"
  21
  22 static struct arm_boot_info sabrelite_binfo = {
  23     /* DDR memory start */
  24     .loader_start = FSL_IMX6_MMDC_ADDR,
  25     /* No board ID, we boot from DT tree */
  26     .board_id = -1,
  27 };
  28
  29 /* No need to do any particular setup for secondary boot */
  30 static void sabrelite_write_secondary(ARMCPU *cpu,
  31                                       const struct arm_boot_info *info)
  32 {
  33 }
  34
  35 /* Secondary cores are reset through SRC device */
  36 static void sabrelite_reset_secondary(ARMCPU *cpu,
  37                                       const struct arm_boot_info *info)
  38 {
  39 }
  40
  41 static void sabrelite_init(MachineState *machine)
  42 {
  43     FslIMX6State *s;
  44
  45     /* Check the amount of memory is compatible with the SOC */
  46     if (machine->ram_size > FSL_IMX6_MMDC_SIZE) {
  47         error_report("RAM size " RAM_ADDR_FMT " above max supported (%08x)",
  48                      machine->ram_size, FSL_IMX6_MMDC_SIZE);
  49         exit(1);
  50     }
  51
  52     s = FSL_IMX6(object_new(TYPE_FSL_IMX6));
  53     object_property_add_child(OBJECT(machine), "soc", OBJECT(s));
  54
  55     /* Ethernet PHY address is 6 */
  56     object_property_set_int(OBJECT(s), "fec-phy-num", 6, &error_fatal);
  57
  58     qdev_realize(DEVICE(s), NULL, &error_fatal);
  59
  60     memory_region_add_subregion(get_system_memory(), FSL_IMX6_MMDC_ADDR,
  61                                 machine->ram);
  62
  63     {
  64         /*
  65          * TODO: Ideally we would expose the chip select and spi bus on the
  66          * SoC object using alias properties; then we would not need to
  67          * directly access the underlying spi device object.
  68          */
  69         /* Add the sst25vf016b NOR FLASH memory to first SPI */
  70         Object *spi_dev;
  71
  72         spi_dev = object_resolve_path_component(OBJECT(s), "spi1");
  73         if (spi_dev) {
  74             SSIBus *spi_bus;
  75
  76             spi_bus = (SSIBus *)qdev_get_child_bus(DEVICE(spi_dev), "spi");
  77             if (spi_bus) {
  78                 DeviceState *flash_dev;
  79                 qemu_irq cs_line;
  80                 DriveInfo *dinfo = drive_get(IF_MTD, 0, 0);
  81
  82                 flash_dev = qdev_new("sst25vf016b");
  83                 if (dinfo) {
  84                     qdev_prop_set_drive_err(flash_dev, "drive",
  85                                             blk_by_legacy_dinfo(dinfo),
  86                                             &error_fatal);
  87                 }
  88                 qdev_realize_and_unref(flash_dev, BUS(spi_bus), &error_fatal);
  89
  90                 cs_line = qdev_get_gpio_in_named(flash_dev, SSI_GPIO_CS, 0);
  91                 qdev_connect_gpio_out(DEVICE(&s->gpio[2]), 19, cs_line);
  92             }
  93         }
  94     }
  95
  96     sabrelite_binfo.ram_size = machine->ram_size;
  97     sabrelite_binfo.secure_boot = true;
  98     sabrelite_binfo.write_secondary_boot = sabrelite_write_secondary;
  99     sabrelite_binfo.secondary_cpu_reset_hook = sabrelite_reset_secondary;
 100
 101     if (!qtest_enabled()) {
 102         arm_load_kernel(&s->cpu[0], machine, &sabrelite_binfo);
 103     }
 104 }
 105
 106 static void sabrelite_machine_init(MachineClass *mc)
 107 {
 108     mc->desc = "Freescale i.MX6 Quad SABRE Lite Board (Cortex-A9)";
 109     mc->init = sabrelite_init;
 110     mc->max_cpus = FSL_IMX6_NUM_CPUS;
 111     mc->ignore_memory_transaction_failures = true;
 112     mc->default_ram_id = "sabrelite.ram";
 113 }
 114
 115 DEFINE_MACHINE("sabrelite", sabrelite_machine_init)