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 "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
  22static 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 */
  30static void sabrelite_write_secondary(ARMCPU *cpu,
  31                                      const struct arm_boot_info *info)
  32{
  33}
  34
  35/* Secondary cores are reset through SRC device */
  36static void sabrelite_reset_secondary(ARMCPU *cpu,
  37                                      const struct arm_boot_info *info)
  38{
  39}
  40
  41static 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    qdev_realize(DEVICE(s), NULL, &error_fatal);
  55
  56    memory_region_add_subregion(get_system_memory(), FSL_IMX6_MMDC_ADDR,
  57                                machine->ram);
  58
  59    {
  60        /*
  61         * TODO: Ideally we would expose the chip select and spi bus on the
  62         * SoC object using alias properties; then we would not need to
  63         * directly access the underlying spi device object.
  64         */
  65        /* Add the sst25vf016b NOR FLASH memory to first SPI */
  66        Object *spi_dev;
  67
  68        spi_dev = object_resolve_path_component(OBJECT(s), "spi1");
  69        if (spi_dev) {
  70            SSIBus *spi_bus;
  71
  72            spi_bus = (SSIBus *)qdev_get_child_bus(DEVICE(spi_dev), "spi");
  73            if (spi_bus) {
  74                DeviceState *flash_dev;
  75                qemu_irq cs_line;
  76                DriveInfo *dinfo = drive_get_next(IF_MTD);
  77
  78                flash_dev = qdev_new("sst25vf016b");
  79                if (dinfo) {
  80                    qdev_prop_set_drive_err(flash_dev, "drive",
  81                                            blk_by_legacy_dinfo(dinfo),
  82                                            &error_fatal);
  83                }
  84                qdev_realize_and_unref(flash_dev, BUS(spi_bus), &error_fatal);
  85
  86                cs_line = qdev_get_gpio_in_named(flash_dev, SSI_GPIO_CS, 0);
  87                sysbus_connect_irq(SYS_BUS_DEVICE(spi_dev), 1, cs_line);
  88            }
  89        }
  90    }
  91
  92    sabrelite_binfo.ram_size = machine->ram_size;
  93    sabrelite_binfo.nb_cpus = machine->smp.cpus;
  94    sabrelite_binfo.secure_boot = true;
  95    sabrelite_binfo.write_secondary_boot = sabrelite_write_secondary;
  96    sabrelite_binfo.secondary_cpu_reset_hook = sabrelite_reset_secondary;
  97
  98    if (!qtest_enabled()) {
  99        arm_load_kernel(&s->cpu[0], machine, &sabrelite_binfo);
 100    }
 101}
 102
 103static void sabrelite_machine_init(MachineClass *mc)
 104{
 105    mc->desc = "Freescale i.MX6 Quad SABRE Lite Board (Cortex A9)";
 106    mc->init = sabrelite_init;
 107    mc->max_cpus = FSL_IMX6_NUM_CPUS;
 108    mc->ignore_memory_transaction_failures = true;
 109    mc->default_ram_id = "sabrelite.ram";
 110}
 111
 112DEFINE_MACHINE("sabrelite", sabrelite_machine_init)
 113