hw/highbank.c

   1 /*
   2  * Calxeda Highbank SoC emulation
   3  *
   4  * Copyright (c) 2010-2012 Calxeda
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2 or later, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along with
  16  * this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  */
  19
  20 #include "sysbus.h"
  21 #include "arm-misc.h"
  22 #include "devices.h"
  23 #include "loader.h"
  24 #include "net.h"
  25 #include "sysemu.h"
  26 #include "boards.h"
  27 #include "sysbus.h"
  28 #include "blockdev.h"
  29 #include "exec-memory.h"
  30
  31 #define SMP_BOOT_ADDR 0x100
  32 #define SMP_BOOT_REG  0x40
  33 #define GIC_BASE_ADDR 0xfff10000
  34
  35 #define NIRQ_GIC      160
  36
  37 /* Board init.  */
  38
  39 static void hb_write_secondary(ARMCPU *cpu, const struct arm_boot_info *info)
  40 {
  41     int n;
  42     uint32_t smpboot[] = {
  43         0xee100fb0, /* mrc p15, 0, r0, c0, c0, 5 - read current core id */
  44         0xe210000f, /* ands r0, r0, #0x0f */
  45         0xe3a03040, /* mov r3, #0x40 - jump address is 0x40 + 0x10 * core id */
  46         0xe0830200, /* add r0, r3, r0, lsl #4 */
  47         0xe59f2024, /* ldr r2, privbase */
  48         0xe3a01001, /* mov r1, #1 */
  49         0xe5821100, /* str r1, [r2, #256] - set GICC_CTLR.Enable */
  50         0xe3a010ff, /* mov r1, #0xff */
  51         0xe5821104, /* str r1, [r2, #260] - set GICC_PMR.Priority to 0xff */
  52         0xf57ff04f, /* dsb */
  53         0xe320f003, /* wfi */
  54         0xe5901000, /* ldr     r1, [r0] */
  55         0xe1110001, /* tst     r1, r1 */
  56         0x0afffffb, /* beq     <wfi> */
  57         0xe12fff11, /* bx      r1 */
  58         GIC_BASE_ADDR      /* privbase: gic address.  */
  59     };
  60     for (n = 0; n < ARRAY_SIZE(smpboot); n++) {
  61         smpboot[n] = tswap32(smpboot[n]);
  62     }
  63     rom_add_blob_fixed("smpboot", smpboot, sizeof(smpboot), SMP_BOOT_ADDR);
  64 }
  65
  66 static void hb_reset_secondary(ARMCPU *cpu, const struct arm_boot_info *info)
  67 {
  68     CPUARMState *env = &cpu->env;
  69
  70     switch (info->nb_cpus) {
  71     case 4:
  72         stl_phys_notdirty(SMP_BOOT_REG + 0x30, 0);
  73     case 3:
  74         stl_phys_notdirty(SMP_BOOT_REG + 0x20, 0);
  75     case 2:
  76         stl_phys_notdirty(SMP_BOOT_REG + 0x10, 0);
  77         env->regs[15] = SMP_BOOT_ADDR;
  78         break;
  79     default:
  80         break;
  81     }
  82 }
  83
  84 #define NUM_REGS      0x200
  85 static void hb_regs_write(void *opaque, hwaddr offset,
  86                           uint64_t value, unsigned size)
  87 {
  88     uint32_t *regs = opaque;
  89
  90     if (offset == 0xf00) {
  91         if (value == 1 || value == 2) {
  92             qemu_system_reset_request();
  93         } else if (value == 3) {
  94             qemu_system_shutdown_request();
  95         }
  96     }
  97
  98     regs[offset/4] = value;
  99 }
 100
 101 static uint64_t hb_regs_read(void *opaque, hwaddr offset,
 102                              unsigned size)
 103 {
 104     uint32_t *regs = opaque;
 105     uint32_t value = regs[offset/4];
 106
 107     if ((offset == 0x100) || (offset == 0x108) || (offset == 0x10C)) {
 108         value |= 0x30000000;
 109     }
 110
 111     return value;
 112 }
 113
 114 static const MemoryRegionOps hb_mem_ops = {
 115     .read = hb_regs_read,
 116     .write = hb_regs_write,
 117     .endianness = DEVICE_NATIVE_ENDIAN,
 118 };
 119
 120 typedef struct {
 121     SysBusDevice busdev;
 122     MemoryRegion *iomem;
 123     uint32_t regs[NUM_REGS];
 124 } HighbankRegsState;
 125
 126 static VMStateDescription vmstate_highbank_regs = {
 127     .name = "highbank-regs",
 128     .version_id = 0,
 129     .minimum_version_id = 0,
 130     .minimum_version_id_old = 0,
 131     .fields = (VMStateField[]) {
 132         VMSTATE_UINT32_ARRAY(regs, HighbankRegsState, NUM_REGS),
 133         VMSTATE_END_OF_LIST(),
 134     },
 135 };
 136
 137 static void highbank_regs_reset(DeviceState *dev)
 138 {
 139     SysBusDevice *sys_dev = sysbus_from_qdev(dev);
 140     HighbankRegsState *s = FROM_SYSBUS(HighbankRegsState, sys_dev);
 141
 142     s->regs[0x40] = 0x05F20121;
 143     s->regs[0x41] = 0x2;
 144     s->regs[0x42] = 0x05F30121;
 145     s->regs[0x43] = 0x05F40121;
 146 }
 147
 148 static int highbank_regs_init(SysBusDevice *dev)
 149 {
 150     HighbankRegsState *s = FROM_SYSBUS(HighbankRegsState, dev);
 151
 152     s->iomem = g_new(MemoryRegion, 1);
 153     memory_region_init_io(s->iomem, &hb_mem_ops, s->regs, "highbank_regs",
 154                           0x1000);
 155     sysbus_init_mmio(dev, s->iomem);
 156
 157     return 0;
 158 }
 159
 160 static void highbank_regs_class_init(ObjectClass *klass, void *data)
 161 {
 162     SysBusDeviceClass *sbc = SYS_BUS_DEVICE_CLASS(klass);
 163     DeviceClass *dc = DEVICE_CLASS(klass);
 164
 165     sbc->init = highbank_regs_init;
 166     dc->desc = "Calxeda Highbank registers";
 167     dc->vmsd = &vmstate_highbank_regs;
 168     dc->reset = highbank_regs_reset;
 169 }
 170
 171 static TypeInfo highbank_regs_info = {
 172     .name          = "highbank-regs",
 173     .parent        = TYPE_SYS_BUS_DEVICE,
 174     .instance_size = sizeof(HighbankRegsState),
 175     .class_init    = highbank_regs_class_init,
 176 };
 177
 178 static void highbank_regs_register_types(void)
 179 {
 180     type_register_static(&highbank_regs_info);
 181 }
 182
 183 type_init(highbank_regs_register_types)
 184
 185 static struct arm_boot_info highbank_binfo;
 186
 187 /* ram_size must be set to match the upper bound of memory in the
 188  * device tree (linux/arch/arm/boot/dts/highbank.dts), which is
 189  * normally 0xff900000 or -m 4089. When running this board on a
 190  * 32-bit host, set the reg value of memory to 0xf7ff00000 in the
 191  * device tree and pass -m 2047 to QEMU.
 192  */
 193 static void highbank_init(QEMUMachineInitArgs *args)
 194 {
 195     ram_addr_t ram_size = args->ram_size;
 196     const char *cpu_model = args->cpu_model;
 197     const char *kernel_filename = args->kernel_filename;
 198     const char *kernel_cmdline = args->kernel_cmdline;
 199     const char *initrd_filename = args->initrd_filename;
 200     DeviceState *dev;
 201     SysBusDevice *busdev;
 202     qemu_irq *irqp;
 203     qemu_irq pic[128];
 204     int n;
 205     qemu_irq cpu_irq[4];
 206     MemoryRegion *sysram;
 207     MemoryRegion *dram;
 208     MemoryRegion *sysmem;
 209     char *sysboot_filename;
 210
 211     if (!cpu_model) {
 212         cpu_model = "cortex-a9";
 213     }
 214
 215     for (n = 0; n < smp_cpus; n++) {
 216         ARMCPU *cpu;
 217         cpu = cpu_arm_init(cpu_model);
 218         if (cpu == NULL) {
 219             fprintf(stderr, "Unable to find CPU definition\n");
 220             exit(1);
 221         }
 222
 223         /* This will become a QOM property eventually */
 224         cpu->reset_cbar = GIC_BASE_ADDR;
 225         irqp = arm_pic_init_cpu(cpu);
 226         cpu_irq[n] = irqp[ARM_PIC_CPU_IRQ];
 227     }
 228
 229     sysmem = get_system_memory();
 230     dram = g_new(MemoryRegion, 1);
 231     memory_region_init_ram(dram, "highbank.dram", ram_size);
 232     /* SDRAM at address zero.  */
 233     memory_region_add_subregion(sysmem, 0, dram);
 234
 235     sysram = g_new(MemoryRegion, 1);
 236     memory_region_init_ram(sysram, "highbank.sysram", 0x8000);
 237     memory_region_add_subregion(sysmem, 0xfff88000, sysram);
 238     if (bios_name != NULL) {
 239         sysboot_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 240         if (sysboot_filename != NULL) {
 241             uint32_t filesize = get_image_size(sysboot_filename);
 242             if (load_image_targphys("sysram.bin", 0xfff88000, filesize) < 0) {
 243                 hw_error("Unable to load %s\n", bios_name);
 244             }
 245         } else {
 246            hw_error("Unable to find %s\n", bios_name);
 247         }
 248     }
 249
 250     dev = qdev_create(NULL, "a9mpcore_priv");
 251     qdev_prop_set_uint32(dev, "num-cpu", smp_cpus);
 252     qdev_prop_set_uint32(dev, "num-irq", NIRQ_GIC);
 253     qdev_init_nofail(dev);
 254     busdev = sysbus_from_qdev(dev);
 255     sysbus_mmio_map(busdev, 0, GIC_BASE_ADDR);
 256     for (n = 0; n < smp_cpus; n++) {
 257         sysbus_connect_irq(busdev, n, cpu_irq[n]);
 258     }
 259
 260     for (n = 0; n < 128; n++) {
 261         pic[n] = qdev_get_gpio_in(dev, n);
 262     }
 263
 264     dev = qdev_create(NULL, "l2x0");
 265     qdev_init_nofail(dev);
 266     busdev = sysbus_from_qdev(dev);
 267     sysbus_mmio_map(busdev, 0, 0xfff12000);
 268
 269     dev = qdev_create(NULL, "sp804");
 270     qdev_prop_set_uint32(dev, "freq0", 150000000);
 271     qdev_prop_set_uint32(dev, "freq1", 150000000);
 272     qdev_init_nofail(dev);
 273     busdev = sysbus_from_qdev(dev);
 274     sysbus_mmio_map(busdev, 0, 0xfff34000);
 275     sysbus_connect_irq(busdev, 0, pic[18]);
 276     sysbus_create_simple("pl011", 0xfff36000, pic[20]);
 277
 278     dev = qdev_create(NULL, "highbank-regs");
 279     qdev_init_nofail(dev);
 280     busdev = sysbus_from_qdev(dev);
 281     sysbus_mmio_map(busdev, 0, 0xfff3c000);
 282
 283     sysbus_create_simple("pl061", 0xfff30000, pic[14]);
 284     sysbus_create_simple("pl061", 0xfff31000, pic[15]);
 285     sysbus_create_simple("pl061", 0xfff32000, pic[16]);
 286     sysbus_create_simple("pl061", 0xfff33000, pic[17]);
 287     sysbus_create_simple("pl031", 0xfff35000, pic[19]);
 288     sysbus_create_simple("pl022", 0xfff39000, pic[23]);
 289
 290     sysbus_create_simple("sysbus-ahci", 0xffe08000, pic[83]);
 291
 292     if (nd_table[0].used) {
 293         qemu_check_nic_model(&nd_table[0], "xgmac");
 294         dev = qdev_create(NULL, "xgmac");
 295         qdev_set_nic_properties(dev, &nd_table[0]);
 296         qdev_init_nofail(dev);
 297         sysbus_mmio_map(sysbus_from_qdev(dev), 0, 0xfff50000);
 298         sysbus_connect_irq(sysbus_from_qdev(dev), 0, pic[77]);
 299         sysbus_connect_irq(sysbus_from_qdev(dev), 1, pic[78]);
 300         sysbus_connect_irq(sysbus_from_qdev(dev), 2, pic[79]);
 301
 302         qemu_check_nic_model(&nd_table[1], "xgmac");
 303         dev = qdev_create(NULL, "xgmac");
 304         qdev_set_nic_properties(dev, &nd_table[1]);
 305         qdev_init_nofail(dev);
 306         sysbus_mmio_map(sysbus_from_qdev(dev), 0, 0xfff51000);
 307         sysbus_connect_irq(sysbus_from_qdev(dev), 0, pic[80]);
 308         sysbus_connect_irq(sysbus_from_qdev(dev), 1, pic[81]);
 309         sysbus_connect_irq(sysbus_from_qdev(dev), 2, pic[82]);
 310     }
 311
 312     highbank_binfo.ram_size = ram_size;
 313     highbank_binfo.kernel_filename = kernel_filename;
 314     highbank_binfo.kernel_cmdline = kernel_cmdline;
 315     highbank_binfo.initrd_filename = initrd_filename;
 316     /* highbank requires a dtb in order to boot, and the dtb will override
 317      * the board ID. The following value is ignored, so set it to -1 to be
 318      * clear that the value is meaningless.
 319      */
 320     highbank_binfo.board_id = -1;
 321     highbank_binfo.nb_cpus = smp_cpus;
 322     highbank_binfo.loader_start = 0;
 323     highbank_binfo.write_secondary_boot = hb_write_secondary;
 324     highbank_binfo.secondary_cpu_reset_hook = hb_reset_secondary;
 325     arm_load_kernel(arm_env_get_cpu(first_cpu), &highbank_binfo);
 326 }
 327
 328 static QEMUMachine highbank_machine = {
 329     .name = "highbank",
 330     .desc = "Calxeda Highbank (ECX-1000)",
 331     .init = highbank_init,
 332     .block_default_type = IF_SCSI,
 333     .max_cpus = 4,
 334 };
 335
 336 static void highbank_machine_init(void)
 337 {
 338     qemu_register_machine(&highbank_machine);
 339 }
 340
 341 machine_init(highbank_machine_init);