hw/arm/imx25_pdk.c

   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
  60 typedef struct IMX25PDK {
  61     FslIMX25State soc;
  62     MemoryRegion ram;
  63     MemoryRegion ram_alias;
  64 } IMX25PDK;
  65
  66 static struct arm_boot_info imx25_pdk_binfo;
  67
  68 static 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
 147 static 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
 153 DEFINE_MACHINE("imx25-pdk", imx25_pdk_machine_init)