LXR qemu/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 "qemu-common.h"
  16#include "hw/arm/fsl-imx6.h"
  17#include "hw/boards.h"
  18#include "sysemu/sysemu.h"
  19#include "qemu/error-report.h"
  20#include "sysemu/qtest.h"
  21
  22typedef struct IMX6Sabrelite {
  23    FslIMX6State soc;
  24    MemoryRegion ram;
  25} IMX6Sabrelite;
  26
  27static struct arm_boot_info sabrelite_binfo = {
  28    /* DDR memory start */
  29    .loader_start = FSL_IMX6_MMDC_ADDR,
  30    /* No board ID, we boot from DT tree */
  31    .board_id = -1,
  32};
  33
  34/* No need to do any particular setup for secondary boot */
  35static void sabrelite_write_secondary(ARMCPU *cpu,
  36                                      const struct arm_boot_info *info)
  37{
  38}
  39
  40/* Secondary cores are reset through SRC device */
  41static void sabrelite_reset_secondary(ARMCPU *cpu,
  42                                      const struct arm_boot_info *info)
  43{
  44}
  45
  46static void sabrelite_init(MachineState *machine)
  47{
  48    IMX6Sabrelite *s = g_new0(IMX6Sabrelite, 1);
  49    Error *err = NULL;
  50
  51    /* Check the amount of memory is compatible with the SOC */
  52    if (machine->ram_size > FSL_IMX6_MMDC_SIZE) {
  53        error_report("RAM size " RAM_ADDR_FMT " above max supported (%08x)",
  54                     machine->ram_size, FSL_IMX6_MMDC_SIZE);
  55        exit(1);
  56    }
  57
  58    object_initialize(&s->soc, sizeof(s->soc), TYPE_FSL_IMX6);
  59    object_property_add_child(OBJECT(machine), "soc", OBJECT(&s->soc),
  60                              &error_abort);
  61
  62    object_property_set_bool(OBJECT(&s->soc), true, "realized", &err);
  63    if (err != NULL) {
  64        error_report("%s", error_get_pretty(err));
  65        exit(1);
  66    }
  67
  68    memory_region_allocate_system_memory(&s->ram, NULL, "sabrelite.ram",
  69                                         machine->ram_size);
  70    memory_region_add_subregion(get_system_memory(), FSL_IMX6_MMDC_ADDR,
  71                                &s->ram);
  72
  73    {
  74        /*
  75         * TODO: Ideally we would expose the chip select and spi bus on the
  76         * SoC object using alias properties; then we would not need to
  77         * directly access the underlying spi device object.
  78         */
  79        /* Add the sst25vf016b NOR FLASH memory to first SPI */
  80        Object *spi_dev;
  81
  82        spi_dev = object_resolve_path_component(OBJECT(&s->soc), "spi1");
  83        if (spi_dev) {
  84            SSIBus *spi_bus;
  85
  86            spi_bus = (SSIBus *)qdev_get_child_bus(DEVICE(spi_dev), "spi");
  87            if (spi_bus) {
  88                DeviceState *flash_dev;
  89
  90                flash_dev = ssi_create_slave(spi_bus, "sst25vf016b");
  91                if (flash_dev) {
  92                    qemu_irq cs_line = qdev_get_gpio_in_named(flash_dev,
  93                                                              SSI_GPIO_CS, 0);
  94                    sysbus_connect_irq(SYS_BUS_DEVICE(spi_dev), 1, cs_line);
  95                }
  96            }
  97        }
  98    }
  99
 100    sabrelite_binfo.ram_size = machine->ram_size;
 101    sabrelite_binfo.kernel_filename = machine->kernel_filename;
 102    sabrelite_binfo.kernel_cmdline = machine->kernel_cmdline;
 103    sabrelite_binfo.initrd_filename = machine->initrd_filename;
 104    sabrelite_binfo.nb_cpus = smp_cpus;
 105    sabrelite_binfo.secure_boot = true;
 106    sabrelite_binfo.write_secondary_boot = sabrelite_write_secondary;
 107    sabrelite_binfo.secondary_cpu_reset_hook = sabrelite_reset_secondary;
 108
 109    if (!qtest_enabled()) {
 110        arm_load_kernel(&s->soc.cpu[0], &sabrelite_binfo);
 111    }
 112}
 113
 114static void sabrelite_machine_init(MachineClass *mc)
 115{
 116    mc->desc = "Freescale i.MX6 Quad SABRE Lite Board (Cortex A9)";
 117    mc->init = sabrelite_init;
 118    mc->max_cpus = FSL_IMX6_NUM_CPUS;
 119}
 120
 121DEFINE_MACHINE("sabrelite", sabrelite_machine_init)
 122