hw/arm/exynos4210.c

   1 /*
   2  *  Samsung exynos4210 SoC emulation
   3  *
   4  *  Copyright (c) 2011 Samsung Electronics Co., Ltd. All rights reserved.
   5  *    Maksim Kozlov <m.kozlov@samsung.com>
   6  *    Evgeny Voevodin <e.voevodin@samsung.com>
   7  *    Igor Mitsyanko  <i.mitsyanko@samsung.com>
   8  *
   9  *  This program is free software; you can redistribute it and/or modify it
  10  *  under the terms of the GNU General Public License as published by the
  11  *  Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful, but WITHOUT
  15  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16  *  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  17  *  for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License along
  20  *  with this program; if not, see <http://www.gnu.org/licenses/>.
  21  *
  22  */
  23
  24 #include "qemu/osdep.h"
  25 #include "qapi/error.h"
  26 #include "qemu-common.h"
  27 #include "qemu/log.h"
  28 #include "cpu.h"
  29 #include "hw/cpu/a9mpcore.h"
  30 #include "hw/boards.h"
  31 #include "sysemu/sysemu.h"
  32 #include "hw/sysbus.h"
  33 #include "hw/arm/arm.h"
  34 #include "hw/loader.h"
  35 #include "hw/arm/exynos4210.h"
  36 #include "hw/sd/sdhci.h"
  37 #include "hw/usb/hcd-ehci.h"
  38
  39 #define EXYNOS4210_CHIPID_ADDR         0x10000000
  40
  41 /* PWM */
  42 #define EXYNOS4210_PWM_BASE_ADDR       0x139D0000
  43
  44 /* RTC */
  45 #define EXYNOS4210_RTC_BASE_ADDR       0x10070000
  46
  47 /* MCT */
  48 #define EXYNOS4210_MCT_BASE_ADDR       0x10050000
  49
  50 /* I2C */
  51 #define EXYNOS4210_I2C_SHIFT           0x00010000
  52 #define EXYNOS4210_I2C_BASE_ADDR       0x13860000
  53 /* Interrupt Group of External Interrupt Combiner for I2C */
  54 #define EXYNOS4210_I2C_INTG            27
  55 #define EXYNOS4210_HDMI_INTG           16
  56
  57 /* UART's definitions */
  58 #define EXYNOS4210_UART0_BASE_ADDR     0x13800000
  59 #define EXYNOS4210_UART1_BASE_ADDR     0x13810000
  60 #define EXYNOS4210_UART2_BASE_ADDR     0x13820000
  61 #define EXYNOS4210_UART3_BASE_ADDR     0x13830000
  62 #define EXYNOS4210_UART0_FIFO_SIZE     256
  63 #define EXYNOS4210_UART1_FIFO_SIZE     64
  64 #define EXYNOS4210_UART2_FIFO_SIZE     16
  65 #define EXYNOS4210_UART3_FIFO_SIZE     16
  66 /* Interrupt Group of External Interrupt Combiner for UART */
  67 #define EXYNOS4210_UART_INT_GRP        26
  68
  69 /* External GIC */
  70 #define EXYNOS4210_EXT_GIC_CPU_BASE_ADDR    0x10480000
  71 #define EXYNOS4210_EXT_GIC_DIST_BASE_ADDR   0x10490000
  72
  73 /* Combiner */
  74 #define EXYNOS4210_EXT_COMBINER_BASE_ADDR   0x10440000
  75 #define EXYNOS4210_INT_COMBINER_BASE_ADDR   0x10448000
  76
  77 /* SD/MMC host controllers */
  78 #define EXYNOS4210_SDHCI_CAPABILITIES       0x05E80080
  79 #define EXYNOS4210_SDHCI_BASE_ADDR          0x12510000
  80 #define EXYNOS4210_SDHCI_ADDR(n)            (EXYNOS4210_SDHCI_BASE_ADDR + \
  81                                                 0x00010000 * (n))
  82 #define EXYNOS4210_SDHCI_NUMBER             4
  83
  84 /* PMU SFR base address */
  85 #define EXYNOS4210_PMU_BASE_ADDR            0x10020000
  86
  87 /* Clock controller SFR base address */
  88 #define EXYNOS4210_CLK_BASE_ADDR            0x10030000
  89
  90 /* PRNG/HASH SFR base address */
  91 #define EXYNOS4210_RNG_BASE_ADDR            0x10830400
  92
  93 /* Display controllers (FIMD) */
  94 #define EXYNOS4210_FIMD0_BASE_ADDR          0x11C00000
  95
  96 /* EHCI */
  97 #define EXYNOS4210_EHCI_BASE_ADDR           0x12580000
  98
  99 static uint8_t chipid_and_omr[] = { 0x11, 0x02, 0x21, 0x43,
 100                                     0x09, 0x00, 0x00, 0x00 };
 101
 102 static uint64_t exynos4210_chipid_and_omr_read(void *opaque, hwaddr offset,
 103                                                unsigned size)
 104 {
 105     assert(offset < sizeof(chipid_and_omr));
 106     return chipid_and_omr[offset];
 107 }
 108
 109 static void exynos4210_chipid_and_omr_write(void *opaque, hwaddr offset,
 110                                             uint64_t value, unsigned size)
 111 {
 112     return;
 113 }
 114
 115 static const MemoryRegionOps exynos4210_chipid_and_omr_ops = {
 116     .read = exynos4210_chipid_and_omr_read,
 117     .write = exynos4210_chipid_and_omr_write,
 118     .endianness = DEVICE_NATIVE_ENDIAN,
 119     .impl = {
 120         .max_access_size = 1,
 121     }
 122 };
 123
 124 void exynos4210_write_secondary(ARMCPU *cpu,
 125         const struct arm_boot_info *info)
 126 {
 127     int n;
 128     uint32_t smpboot[] = {
 129         0xe59f3034, /* ldr r3, External gic_cpu_if */
 130         0xe59f2034, /* ldr r2, Internal gic_cpu_if */
 131         0xe59f0034, /* ldr r0, startaddr */
 132         0xe3a01001, /* mov r1, #1 */
 133         0xe5821000, /* str r1, [r2] */
 134         0xe5831000, /* str r1, [r3] */
 135         0xe3a010ff, /* mov r1, #0xff */
 136         0xe5821004, /* str r1, [r2, #4] */
 137         0xe5831004, /* str r1, [r3, #4] */
 138         0xf57ff04f, /* dsb */
 139         0xe320f003, /* wfi */
 140         0xe5901000, /* ldr     r1, [r0] */
 141         0xe1110001, /* tst     r1, r1 */
 142         0x0afffffb, /* beq     <wfi> */
 143         0xe12fff11, /* bx      r1 */
 144         EXYNOS4210_EXT_GIC_CPU_BASE_ADDR,
 145         0,          /* gic_cpu_if: base address of Internal GIC CPU interface */
 146         0           /* bootreg: Boot register address is held here */
 147     };
 148     smpboot[ARRAY_SIZE(smpboot) - 1] = info->smp_bootreg_addr;
 149     smpboot[ARRAY_SIZE(smpboot) - 2] = info->gic_cpu_if_addr;
 150     for (n = 0; n < ARRAY_SIZE(smpboot); n++) {
 151         smpboot[n] = tswap32(smpboot[n]);
 152     }
 153     rom_add_blob_fixed("smpboot", smpboot, sizeof(smpboot),
 154                        info->smp_loader_start);
 155 }
 156
 157 static uint64_t exynos4210_calc_affinity(int cpu)
 158 {
 159     uint64_t mp_affinity;
 160
 161     /* Exynos4210 has 0x9 as cluster ID */
 162     mp_affinity = (0x9 << ARM_AFF1_SHIFT) | cpu;
 163
 164     return mp_affinity;
 165 }
 166
 167 Exynos4210State *exynos4210_init(MemoryRegion *system_mem)
 168 {
 169     Exynos4210State *s = g_new(Exynos4210State, 1);
 170     qemu_irq gate_irq[EXYNOS4210_NCPUS][EXYNOS4210_IRQ_GATE_NINPUTS];
 171     SysBusDevice *busdev;
 172     DeviceState *dev;
 173     int i, n;
 174
 175     for (n = 0; n < EXYNOS4210_NCPUS; n++) {
 176         Object *cpuobj = object_new(ARM_CPU_TYPE_NAME("cortex-a9"));
 177
 178         /* By default A9 CPUs have EL3 enabled.  This board does not currently
 179          * support EL3 so the CPU EL3 property is disabled before realization.
 180          */
 181         if (object_property_find(cpuobj, "has_el3", NULL)) {
 182             object_property_set_bool(cpuobj, false, "has_el3", &error_fatal);
 183         }
 184
 185         s->cpu[n] = ARM_CPU(cpuobj);
 186         object_property_set_int(cpuobj, exynos4210_calc_affinity(n),
 187                                 "mp-affinity", &error_abort);
 188         object_property_set_int(cpuobj, EXYNOS4210_SMP_PRIVATE_BASE_ADDR,
 189                                 "reset-cbar", &error_abort);
 190         object_property_set_bool(cpuobj, true, "realized", &error_fatal);
 191     }
 192
 193     /*** IRQs ***/
 194
 195     s->irq_table = exynos4210_init_irq(&s->irqs);
 196
 197     /* IRQ Gate */
 198     for (i = 0; i < EXYNOS4210_NCPUS; i++) {
 199         dev = qdev_create(NULL, "exynos4210.irq_gate");
 200         qdev_prop_set_uint32(dev, "n_in", EXYNOS4210_IRQ_GATE_NINPUTS);
 201         qdev_init_nofail(dev);
 202         /* Get IRQ Gate input in gate_irq */
 203         for (n = 0; n < EXYNOS4210_IRQ_GATE_NINPUTS; n++) {
 204             gate_irq[i][n] = qdev_get_gpio_in(dev, n);
 205         }
 206         busdev = SYS_BUS_DEVICE(dev);
 207
 208         /* Connect IRQ Gate output to CPU's IRQ line */
 209         sysbus_connect_irq(busdev, 0,
 210                            qdev_get_gpio_in(DEVICE(s->cpu[i]), ARM_CPU_IRQ));
 211     }
 212
 213     /* Private memory region and Internal GIC */
 214     dev = qdev_create(NULL, TYPE_A9MPCORE_PRIV);
 215     qdev_prop_set_uint32(dev, "num-cpu", EXYNOS4210_NCPUS);
 216     qdev_init_nofail(dev);
 217     busdev = SYS_BUS_DEVICE(dev);
 218     sysbus_mmio_map(busdev, 0, EXYNOS4210_SMP_PRIVATE_BASE_ADDR);
 219     for (n = 0; n < EXYNOS4210_NCPUS; n++) {
 220         sysbus_connect_irq(busdev, n, gate_irq[n][0]);
 221     }
 222     for (n = 0; n < EXYNOS4210_INT_GIC_NIRQ; n++) {
 223         s->irqs.int_gic_irq[n] = qdev_get_gpio_in(dev, n);
 224     }
 225
 226     /* Cache controller */
 227     sysbus_create_simple("l2x0", EXYNOS4210_L2X0_BASE_ADDR, NULL);
 228
 229     /* External GIC */
 230     dev = qdev_create(NULL, "exynos4210.gic");
 231     qdev_prop_set_uint32(dev, "num-cpu", EXYNOS4210_NCPUS);
 232     qdev_init_nofail(dev);
 233     busdev = SYS_BUS_DEVICE(dev);
 234     /* Map CPU interface */
 235     sysbus_mmio_map(busdev, 0, EXYNOS4210_EXT_GIC_CPU_BASE_ADDR);
 236     /* Map Distributer interface */
 237     sysbus_mmio_map(busdev, 1, EXYNOS4210_EXT_GIC_DIST_BASE_ADDR);
 238     for (n = 0; n < EXYNOS4210_NCPUS; n++) {
 239         sysbus_connect_irq(busdev, n, gate_irq[n][1]);
 240     }
 241     for (n = 0; n < EXYNOS4210_EXT_GIC_NIRQ; n++) {
 242         s->irqs.ext_gic_irq[n] = qdev_get_gpio_in(dev, n);
 243     }
 244
 245     /* Internal Interrupt Combiner */
 246     dev = qdev_create(NULL, "exynos4210.combiner");
 247     qdev_init_nofail(dev);
 248     busdev = SYS_BUS_DEVICE(dev);
 249     for (n = 0; n < EXYNOS4210_MAX_INT_COMBINER_OUT_IRQ; n++) {
 250         sysbus_connect_irq(busdev, n, s->irqs.int_gic_irq[n]);
 251     }
 252     exynos4210_combiner_get_gpioin(&s->irqs, dev, 0);
 253     sysbus_mmio_map(busdev, 0, EXYNOS4210_INT_COMBINER_BASE_ADDR);
 254
 255     /* External Interrupt Combiner */
 256     dev = qdev_create(NULL, "exynos4210.combiner");
 257     qdev_prop_set_uint32(dev, "external", 1);
 258     qdev_init_nofail(dev);
 259     busdev = SYS_BUS_DEVICE(dev);
 260     for (n = 0; n < EXYNOS4210_MAX_INT_COMBINER_OUT_IRQ; n++) {
 261         sysbus_connect_irq(busdev, n, s->irqs.ext_gic_irq[n]);
 262     }
 263     exynos4210_combiner_get_gpioin(&s->irqs, dev, 1);
 264     sysbus_mmio_map(busdev, 0, EXYNOS4210_EXT_COMBINER_BASE_ADDR);
 265
 266     /* Initialize board IRQs. */
 267     exynos4210_init_board_irqs(&s->irqs);
 268
 269     /*** Memory ***/
 270
 271     /* Chip-ID and OMR */
 272     memory_region_init_io(&s->chipid_mem, NULL, &exynos4210_chipid_and_omr_ops,
 273         NULL, "exynos4210.chipid", sizeof(chipid_and_omr));
 274     memory_region_add_subregion(system_mem, EXYNOS4210_CHIPID_ADDR,
 275                                 &s->chipid_mem);
 276
 277     /* Internal ROM */
 278     memory_region_init_ram(&s->irom_mem, NULL, "exynos4210.irom",
 279                            EXYNOS4210_IROM_SIZE, &error_fatal);
 280     memory_region_set_readonly(&s->irom_mem, true);
 281     memory_region_add_subregion(system_mem, EXYNOS4210_IROM_BASE_ADDR,
 282                                 &s->irom_mem);
 283     /* mirror of iROM */
 284     memory_region_init_alias(&s->irom_alias_mem, NULL, "exynos4210.irom_alias",
 285                              &s->irom_mem,
 286                              0,
 287                              EXYNOS4210_IROM_SIZE);
 288     memory_region_set_readonly(&s->irom_alias_mem, true);
 289     memory_region_add_subregion(system_mem, EXYNOS4210_IROM_MIRROR_BASE_ADDR,
 290                                 &s->irom_alias_mem);
 291
 292     /* Internal RAM */
 293     memory_region_init_ram(&s->iram_mem, NULL, "exynos4210.iram",
 294                            EXYNOS4210_IRAM_SIZE, &error_fatal);
 295     memory_region_add_subregion(system_mem, EXYNOS4210_IRAM_BASE_ADDR,
 296                                 &s->iram_mem);
 297
 298    /* PMU.
 299     * The only reason of existence at the moment is that secondary CPU boot
 300     * loader uses PMU INFORM5 register as a holding pen.
 301     */
 302     sysbus_create_simple("exynos4210.pmu", EXYNOS4210_PMU_BASE_ADDR, NULL);
 303
 304     sysbus_create_simple("exynos4210.clk", EXYNOS4210_CLK_BASE_ADDR, NULL);
 305     sysbus_create_simple("exynos4210.rng", EXYNOS4210_RNG_BASE_ADDR, NULL);
 306
 307     /* PWM */
 308     sysbus_create_varargs("exynos4210.pwm", EXYNOS4210_PWM_BASE_ADDR,
 309                           s->irq_table[exynos4210_get_irq(22, 0)],
 310                           s->irq_table[exynos4210_get_irq(22, 1)],
 311                           s->irq_table[exynos4210_get_irq(22, 2)],
 312                           s->irq_table[exynos4210_get_irq(22, 3)],
 313                           s->irq_table[exynos4210_get_irq(22, 4)],
 314                           NULL);
 315     /* RTC */
 316     sysbus_create_varargs("exynos4210.rtc", EXYNOS4210_RTC_BASE_ADDR,
 317                           s->irq_table[exynos4210_get_irq(23, 0)],
 318                           s->irq_table[exynos4210_get_irq(23, 1)],
 319                           NULL);
 320
 321     /* Multi Core Timer */
 322     dev = qdev_create(NULL, "exynos4210.mct");
 323     qdev_init_nofail(dev);
 324     busdev = SYS_BUS_DEVICE(dev);
 325     for (n = 0; n < 4; n++) {
 326         /* Connect global timer interrupts to Combiner gpio_in */
 327         sysbus_connect_irq(busdev, n,
 328                 s->irq_table[exynos4210_get_irq(1, 4 + n)]);
 329     }
 330     /* Connect local timer interrupts to Combiner gpio_in */
 331     sysbus_connect_irq(busdev, 4,
 332             s->irq_table[exynos4210_get_irq(51, 0)]);
 333     sysbus_connect_irq(busdev, 5,
 334             s->irq_table[exynos4210_get_irq(35, 3)]);
 335     sysbus_mmio_map(busdev, 0, EXYNOS4210_MCT_BASE_ADDR);
 336
 337     /*** I2C ***/
 338     for (n = 0; n < EXYNOS4210_I2C_NUMBER; n++) {
 339         uint32_t addr = EXYNOS4210_I2C_BASE_ADDR + EXYNOS4210_I2C_SHIFT * n;
 340         qemu_irq i2c_irq;
 341
 342         if (n < 8) {
 343             i2c_irq = s->irq_table[exynos4210_get_irq(EXYNOS4210_I2C_INTG, n)];
 344         } else {
 345             i2c_irq = s->irq_table[exynos4210_get_irq(EXYNOS4210_HDMI_INTG, 1)];
 346         }
 347
 348         dev = qdev_create(NULL, "exynos4210.i2c");
 349         qdev_init_nofail(dev);
 350         busdev = SYS_BUS_DEVICE(dev);
 351         sysbus_connect_irq(busdev, 0, i2c_irq);
 352         sysbus_mmio_map(busdev, 0, addr);
 353         s->i2c_if[n] = (I2CBus *)qdev_get_child_bus(dev, "i2c");
 354     }
 355
 356
 357     /*** UARTs ***/
 358     exynos4210_uart_create(EXYNOS4210_UART0_BASE_ADDR,
 359                            EXYNOS4210_UART0_FIFO_SIZE, 0, NULL,
 360                   s->irq_table[exynos4210_get_irq(EXYNOS4210_UART_INT_GRP, 0)]);
 361
 362     exynos4210_uart_create(EXYNOS4210_UART1_BASE_ADDR,
 363                            EXYNOS4210_UART1_FIFO_SIZE, 1, NULL,
 364                   s->irq_table[exynos4210_get_irq(EXYNOS4210_UART_INT_GRP, 1)]);
 365
 366     exynos4210_uart_create(EXYNOS4210_UART2_BASE_ADDR,
 367                            EXYNOS4210_UART2_FIFO_SIZE, 2, NULL,
 368                   s->irq_table[exynos4210_get_irq(EXYNOS4210_UART_INT_GRP, 2)]);
 369
 370     exynos4210_uart_create(EXYNOS4210_UART3_BASE_ADDR,
 371                            EXYNOS4210_UART3_FIFO_SIZE, 3, NULL,
 372                   s->irq_table[exynos4210_get_irq(EXYNOS4210_UART_INT_GRP, 3)]);
 373
 374     /*** SD/MMC host controllers ***/
 375     for (n = 0; n < EXYNOS4210_SDHCI_NUMBER; n++) {
 376         DeviceState *carddev;
 377         BlockBackend *blk;
 378         DriveInfo *di;
 379
 380         /* Compatible with:
 381          * - SD Host Controller Specification Version 2.0
 382          * - SDIO Specification Version 2.0
 383          * - MMC Specification Version 4.3
 384          * - SDMA
 385          * - ADMA2
 386          *
 387          * As this part of the Exynos4210 is not publically available,
 388          * we used the "HS-MMC Controller S3C2416X RISC Microprocessor"
 389          * public datasheet which is very similar (implementing
 390          * MMC Specification Version 4.0 being the only difference noted)
 391          */
 392         dev = qdev_create(NULL, TYPE_SYSBUS_SDHCI);
 393         qdev_prop_set_uint64(dev, "capareg", EXYNOS4210_SDHCI_CAPABILITIES);
 394         qdev_init_nofail(dev);
 395
 396         busdev = SYS_BUS_DEVICE(dev);
 397         sysbus_mmio_map(busdev, 0, EXYNOS4210_SDHCI_ADDR(n));
 398         sysbus_connect_irq(busdev, 0, s->irq_table[exynos4210_get_irq(29, n)]);
 399
 400         di = drive_get(IF_SD, 0, n);
 401         blk = di ? blk_by_legacy_dinfo(di) : NULL;
 402         carddev = qdev_create(qdev_get_child_bus(dev, "sd-bus"), TYPE_SD_CARD);
 403         qdev_prop_set_drive(carddev, "drive", blk, &error_abort);
 404         qdev_init_nofail(carddev);
 405     }
 406
 407     /*** Display controller (FIMD) ***/
 408     sysbus_create_varargs("exynos4210.fimd", EXYNOS4210_FIMD0_BASE_ADDR,
 409             s->irq_table[exynos4210_get_irq(11, 0)],
 410             s->irq_table[exynos4210_get_irq(11, 1)],
 411             s->irq_table[exynos4210_get_irq(11, 2)],
 412             NULL);
 413
 414     sysbus_create_simple(TYPE_EXYNOS4210_EHCI, EXYNOS4210_EHCI_BASE_ADDR,
 415             s->irq_table[exynos4210_get_irq(28, 3)]);
 416
 417     return s;
 418 }