LXR qemu/hw/arm/imx25

   1/*
   2 * Copyright (c) 2013 Jean-Christophe Dubois <jcd@tribudubois.net>
   3 *
   4 * PDK Board System emulation.
   5 *
   6 * Based on hw/arm/kzm.c
   7 *
   8 * Copyright (c) 2008 OKL and 2011 NICTA
   9 * Written by Hans at OK-Labs
  10 * Updated by Peter Chubb.
  11 *
  12 *  This program is free software; you can redistribute it and/or modify it
  13 *  under the terms of the GNU General Public License as published by the
  14 *  Free Software Foundation; either version 2 of the License, or
  15 *  (at your option) any later version.
  16 *
  17 *  This program is distributed in the hope that it will be useful, but WITHOUT
  18 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  19 *  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  20 *  for more details.
  21 *
  22 *  You should have received a copy of the GNU General Public License along
  23 *  with this program; if not, see <http://www.gnu.org/licenses/>.
  24 */
  25
  26#include "qemu/osdep.h"
  27#include "qapi/error.h"
  28#include "qemu-common.h"
  29#include "cpu.h"
  30#include "hw/arm/fsl-imx25.h"
  31#include "hw/boards.h"
  32#include "qemu/error-report.h"
  33#include "exec/address-spaces.h"
  34#include "sysemu/qtest.h"
  35#include "hw/i2c/i2c.h"
  36
  37/* Memory map for PDK Emulation Baseboard:
  38 * 0x00000000-0x7fffffff See i.MX25 SOC fr support
  39 * 0x80000000-0x87ffffff RAM + Alias          EMULATED
  40 * 0x90000000-0x9fffffff RAM + Alias          EMULATED
  41 * 0xa0000000-0xa7ffffff Flash                IGNORED
  42 * 0xa8000000-0xafffffff Flash                IGNORED
  43 * 0xb0000000-0xb1ffffff SRAM                 IGNORED
  44 * 0xb2000000-0xb3ffffff SRAM                 IGNORED
  45 * 0xb4000000-0xb5ffffff CS4                  IGNORED
  46 * 0xb6000000-0xb8000fff Reserved             IGNORED
  47 * 0xb8001000-0xb8001fff SDRAM CTRL reg       IGNORED
  48 * 0xb8002000-0xb8002fff WEIM CTRL reg        IGNORED
  49 * 0xb8003000-0xb8003fff M3IF CTRL reg        IGNORED
  50 * 0xb8004000-0xb8004fff EMI CTRL reg         IGNORED
  51 * 0xb8005000-0xbaffffff Reserved             IGNORED
  52 * 0xbb000000-0xbb000fff NAND flash area buf  IGNORED
  53 * 0xbb001000-0xbb0011ff NAND flash reserved  IGNORED
  54 * 0xbb001200-0xbb001dff Reserved             IGNORED
  55 * 0xbb001e00-0xbb001fff NAN flash CTRL reg   IGNORED
  56 * 0xbb012000-0xbfffffff Reserved             IGNORED
  57 * 0xc0000000-0xffffffff Reserved             IGNORED
  58 */
  59
  60typedef struct IMX25PDK {
  61    FslIMX25State soc;
  62    MemoryRegion ram;
  63    MemoryRegion ram_alias;
  64} IMX25PDK;
  65
  66static struct arm_boot_info imx25_pdk_binfo;
  67
  68static void imx25_pdk_init(MachineState *machine)
  69{
  70    IMX25PDK *s = g_new0(IMX25PDK, 1);
  71    unsigned int ram_size;
  72    unsigned int alias_offset;
  73    int i;
  74
  75    object_initialize(&s->soc, sizeof(s->soc), TYPE_FSL_IMX25);
  76    object_property_add_child(OBJECT(machine), "soc", OBJECT(&s->soc),
  77                              &error_abort);
  78
  79    object_property_set_bool(OBJECT(&s->soc), true, "realized", &error_fatal);
  80
  81    /* We need to initialize our memory */
  82    if (machine->ram_size > (FSL_IMX25_SDRAM0_SIZE + FSL_IMX25_SDRAM1_SIZE)) {
  83        error_report("WARNING: RAM size " RAM_ADDR_FMT " above max supported, "
  84                     "reduced to %x", machine->ram_size,
  85                     FSL_IMX25_SDRAM0_SIZE + FSL_IMX25_SDRAM1_SIZE);
  86        machine->ram_size = FSL_IMX25_SDRAM0_SIZE + FSL_IMX25_SDRAM1_SIZE;
  87    }
  88
  89    memory_region_allocate_system_memory(&s->ram, NULL, "imx25.ram",
  90                                         machine->ram_size);
  91    memory_region_add_subregion(get_system_memory(), FSL_IMX25_SDRAM0_ADDR,
  92                                &s->ram);
  93
  94    /* initialize the alias memory if any */
  95    for (i = 0, ram_size = machine->ram_size, alias_offset = 0;
  96         (i < 2) && ram_size; i++) {
  97        unsigned int size;
  98        static const struct {
  99            hwaddr addr;
 100            unsigned int size;
 101        } ram[2] = {
 102            { FSL_IMX25_SDRAM0_ADDR, FSL_IMX25_SDRAM0_SIZE },
 103            { FSL_IMX25_SDRAM1_ADDR, FSL_IMX25_SDRAM1_SIZE },
 104        };
 105
 106        size = MIN(ram_size, ram[i].size);
 107
 108        ram_size -= size;
 109
 110        if (size < ram[i].size) {
 111            memory_region_init_alias(&s->ram_alias, NULL, "ram.alias",
 112                                     &s->ram, alias_offset, ram[i].size - size);
 113            memory_region_add_subregion(get_system_memory(),
 114                                        ram[i].addr + size, &s->ram_alias);
 115        }
 116
 117        alias_offset += ram[i].size;
 118    }
 119
 120    imx25_pdk_binfo.ram_size = machine->ram_size;
 121    imx25_pdk_binfo.kernel_filename = machine->kernel_filename;
 122    imx25_pdk_binfo.kernel_cmdline = machine->kernel_cmdline;
 123    imx25_pdk_binfo.initrd_filename = machine->initrd_filename;
 124    imx25_pdk_binfo.loader_start = FSL_IMX25_SDRAM0_ADDR;
 125    imx25_pdk_binfo.board_id = 1771,
 126    imx25_pdk_binfo.nb_cpus = 1;
 127
 128    /*
 129     * We test explicitly for qtest here as it is not done (yet?) in
 130     * arm_load_kernel(). Without this the "make check" command would
 131     * fail.
 132     */
 133    if (!qtest_enabled()) {
 134        arm_load_kernel(&s->soc.cpu, &imx25_pdk_binfo);
 135    } else {
 136        /*
 137         * This I2C device doesn't exist on the real board.
 138         * We add it here (only on qtest usage) to be able to do a bit
 139         * of simple qtest. See "make check" for details.
 140         */
 141        i2c_create_slave((I2CBus *)qdev_get_child_bus(DEVICE(&s->soc.i2c[0]),
 142                                                      "i2c"),
 143                         "ds1338", 0x68);
 144    }
 145}
 146
 147static void imx25_pdk_machine_init(MachineClass *mc)
 148{
 149    mc->desc = "ARM i.MX25 PDK board (ARM926)";
 150    mc->init = imx25_pdk_init;
 151}
 152
 153DEFINE_MACHINE("imx25-pdk", imx25_pdk_machine_init)
 154