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/boards.h"
  17 #include "hw/qdev-properties.h"
  18 #include "sysemu/sysemu.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     Error *err = NULL;
  45
  46     /* Check the amount of memory is compatible with the SOC */
  47     if (machine->ram_size > FSL_IMX6_MMDC_SIZE) {
  48         error_report("RAM size " RAM_ADDR_FMT " above max supported (%08x)",
  49                      machine->ram_size, FSL_IMX6_MMDC_SIZE);
  50         exit(1);
  51     }
  52
  53     s = FSL_IMX6(object_new(TYPE_FSL_IMX6));
  54     object_property_add_child(OBJECT(machine), "soc", OBJECT(s), &error_fatal);
  55     object_property_set_bool(OBJECT(s), true, "realized", &err);
  56     if (err != NULL) {
  57         error_report("%s", error_get_pretty(err));
  58         exit(1);
  59     }
  60
  61     memory_region_add_subregion(get_system_memory(), FSL_IMX6_MMDC_ADDR,
  62                                 machine->ram);
  63
  64     {
  65         /*
  66          * TODO: Ideally we would expose the chip select and spi bus on the
  67          * SoC object using alias properties; then we would not need to
  68          * directly access the underlying spi device object.
  69          */
  70         /* Add the sst25vf016b NOR FLASH memory to first SPI */
  71         Object *spi_dev;
  72
  73         spi_dev = object_resolve_path_component(OBJECT(s), "spi1");
  74         if (spi_dev) {
  75             SSIBus *spi_bus;
  76
  77             spi_bus = (SSIBus *)qdev_get_child_bus(DEVICE(spi_dev), "spi");
  78             if (spi_bus) {
  79                 DeviceState *flash_dev;
  80                 qemu_irq cs_line;
  81                 DriveInfo *dinfo = drive_get_next(IF_MTD);
  82
  83                 flash_dev = ssi_create_slave_no_init(spi_bus, "sst25vf016b");
  84                 if (dinfo) {
  85                     qdev_prop_set_drive(flash_dev, "drive",
  86                                         blk_by_legacy_dinfo(dinfo),
  87                                         &error_fatal);
  88                 }
  89                 qdev_init_nofail(flash_dev);
  90
  91                 cs_line = qdev_get_gpio_in_named(flash_dev, SSI_GPIO_CS, 0);
  92                 sysbus_connect_irq(SYS_BUS_DEVICE(spi_dev), 1, cs_line);
  93             }
  94         }
  95     }
  96
  97     sabrelite_binfo.ram_size = machine->ram_size;
  98     sabrelite_binfo.nb_cpus = machine->smp.cpus;
  99     sabrelite_binfo.secure_boot = true;
 100     sabrelite_binfo.write_secondary_boot = sabrelite_write_secondary;
 101     sabrelite_binfo.secondary_cpu_reset_hook = sabrelite_reset_secondary;
 102
 103     if (!qtest_enabled()) {
 104         arm_load_kernel(&s->cpu[0], machine, &sabrelite_binfo);
 105     }
 106 }
 107
 108 static void sabrelite_machine_init(MachineClass *mc)
 109 {
 110     mc->desc = "Freescale i.MX6 Quad SABRE Lite Board (Cortex A9)";
 111     mc->init = sabrelite_init;
 112     mc->max_cpus = FSL_IMX6_NUM_CPUS;
 113     mc->ignore_memory_transaction_failures = true;
 114     mc->default_ram_id = "sabrelite.ram";
 115 }
 116
 117 DEFINE_MACHINE("sabrelite", sabrelite_machine_init)