hw/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 "boards.h"
  25 #include "sysemu/sysemu.h"
  26 #include "sysbus.h"
  27 #include "arm-misc.h"
  28 #include "loader.h"
  29 #include "exynos4210.h"
  30
  31 #define EXYNOS4210_CHIPID_ADDR         0x10000000
  32
  33 /* PWM */
  34 #define EXYNOS4210_PWM_BASE_ADDR       0x139D0000
  35
  36 /* RTC */
  37 #define EXYNOS4210_RTC_BASE_ADDR       0x10070000
  38
  39 /* MCT */
  40 #define EXYNOS4210_MCT_BASE_ADDR       0x10050000
  41
  42 /* I2C */
  43 #define EXYNOS4210_I2C_SHIFT           0x00010000
  44 #define EXYNOS4210_I2C_BASE_ADDR       0x13860000
  45 /* Interrupt Group of External Interrupt Combiner for I2C */
  46 #define EXYNOS4210_I2C_INTG            27
  47 #define EXYNOS4210_HDMI_INTG           16
  48
  49 /* UART's definitions */
  50 #define EXYNOS4210_UART0_BASE_ADDR     0x13800000
  51 #define EXYNOS4210_UART1_BASE_ADDR     0x13810000
  52 #define EXYNOS4210_UART2_BASE_ADDR     0x13820000
  53 #define EXYNOS4210_UART3_BASE_ADDR     0x13830000
  54 #define EXYNOS4210_UART0_FIFO_SIZE     256
  55 #define EXYNOS4210_UART1_FIFO_SIZE     64
  56 #define EXYNOS4210_UART2_FIFO_SIZE     16
  57 #define EXYNOS4210_UART3_FIFO_SIZE     16
  58 /* Interrupt Group of External Interrupt Combiner for UART */
  59 #define EXYNOS4210_UART_INT_GRP        26
  60
  61 /* External GIC */
  62 #define EXYNOS4210_EXT_GIC_CPU_BASE_ADDR    0x10480000
  63 #define EXYNOS4210_EXT_GIC_DIST_BASE_ADDR   0x10490000
  64
  65 /* Combiner */
  66 #define EXYNOS4210_EXT_COMBINER_BASE_ADDR   0x10440000
  67 #define EXYNOS4210_INT_COMBINER_BASE_ADDR   0x10448000
  68
  69 /* PMU SFR base address */
  70 #define EXYNOS4210_PMU_BASE_ADDR            0x10020000
  71
  72 /* Display controllers (FIMD) */
  73 #define EXYNOS4210_FIMD0_BASE_ADDR          0x11C00000
  74
  75 static uint8_t chipid_and_omr[] = { 0x11, 0x02, 0x21, 0x43,
  76                                     0x09, 0x00, 0x00, 0x00 };
  77
  78 void exynos4210_write_secondary(ARMCPU *cpu,
  79         const struct arm_boot_info *info)
  80 {
  81     int n;
  82     uint32_t smpboot[] = {
  83         0xe59f3034, /* ldr r3, External gic_cpu_if */
  84         0xe59f2034, /* ldr r2, Internal gic_cpu_if */
  85         0xe59f0034, /* ldr r0, startaddr */
  86         0xe3a01001, /* mov r1, #1 */
  87         0xe5821000, /* str r1, [r2] */
  88         0xe5831000, /* str r1, [r3] */
  89         0xe3a010ff, /* mov r1, #0xff */
  90         0xe5821004, /* str r1, [r2, #4] */
  91         0xe5831004, /* str r1, [r3, #4] */
  92         0xf57ff04f, /* dsb */
  93         0xe320f003, /* wfi */
  94         0xe5901000, /* ldr     r1, [r0] */
  95         0xe1110001, /* tst     r1, r1 */
  96         0x0afffffb, /* beq     <wfi> */
  97         0xe12fff11, /* bx      r1 */
  98         EXYNOS4210_EXT_GIC_CPU_BASE_ADDR,
  99         0,          /* gic_cpu_if: base address of Internal GIC CPU interface */
 100         0           /* bootreg: Boot register address is held here */
 101     };
 102     smpboot[ARRAY_SIZE(smpboot) - 1] = info->smp_bootreg_addr;
 103     smpboot[ARRAY_SIZE(smpboot) - 2] = info->gic_cpu_if_addr;
 104     for (n = 0; n < ARRAY_SIZE(smpboot); n++) {
 105         smpboot[n] = tswap32(smpboot[n]);
 106     }
 107     rom_add_blob_fixed("smpboot", smpboot, sizeof(smpboot),
 108                        info->smp_loader_start);
 109 }
 110
 111 Exynos4210State *exynos4210_init(MemoryRegion *system_mem,
 112         unsigned long ram_size)
 113 {
 114     qemu_irq cpu_irq[EXYNOS4210_NCPUS];
 115     int i, n;
 116     Exynos4210State *s = g_new(Exynos4210State, 1);
 117     qemu_irq *irqp;
 118     qemu_irq gate_irq[EXYNOS4210_NCPUS][EXYNOS4210_IRQ_GATE_NINPUTS];
 119     unsigned long mem_size;
 120     DeviceState *dev;
 121     SysBusDevice *busdev;
 122
 123     for (n = 0; n < EXYNOS4210_NCPUS; n++) {
 124         s->cpu[n] = cpu_arm_init("cortex-a9");
 125         if (!s->cpu[n]) {
 126             fprintf(stderr, "Unable to find CPU %d definition\n", n);
 127             exit(1);
 128         }
 129
 130         /* Create PIC controller for each processor instance */
 131         irqp = arm_pic_init_cpu(s->cpu[n]);
 132
 133         /*
 134          * Get GICs gpio_in cpu_irq to connect a combiner to them later.
 135          * Use only IRQ for a while.
 136          */
 137         cpu_irq[n] = irqp[ARM_PIC_CPU_IRQ];
 138     }
 139
 140     /*** IRQs ***/
 141
 142     s->irq_table = exynos4210_init_irq(&s->irqs);
 143
 144     /* IRQ Gate */
 145     for (i = 0; i < EXYNOS4210_NCPUS; i++) {
 146         dev = qdev_create(NULL, "exynos4210.irq_gate");
 147         qdev_prop_set_uint32(dev, "n_in", EXYNOS4210_IRQ_GATE_NINPUTS);
 148         qdev_init_nofail(dev);
 149         /* Get IRQ Gate input in gate_irq */
 150         for (n = 0; n < EXYNOS4210_IRQ_GATE_NINPUTS; n++) {
 151             gate_irq[i][n] = qdev_get_gpio_in(dev, n);
 152         }
 153         busdev = sysbus_from_qdev(dev);
 154
 155         /* Connect IRQ Gate output to cpu_irq */
 156         sysbus_connect_irq(busdev, 0, cpu_irq[i]);
 157     }
 158
 159     /* Private memory region and Internal GIC */
 160     dev = qdev_create(NULL, "a9mpcore_priv");
 161     qdev_prop_set_uint32(dev, "num-cpu", EXYNOS4210_NCPUS);
 162     qdev_init_nofail(dev);
 163     busdev = sysbus_from_qdev(dev);
 164     sysbus_mmio_map(busdev, 0, EXYNOS4210_SMP_PRIVATE_BASE_ADDR);
 165     for (n = 0; n < EXYNOS4210_NCPUS; n++) {
 166         sysbus_connect_irq(busdev, n, gate_irq[n][0]);
 167     }
 168     for (n = 0; n < EXYNOS4210_INT_GIC_NIRQ; n++) {
 169         s->irqs.int_gic_irq[n] = qdev_get_gpio_in(dev, n);
 170     }
 171
 172     /* Cache controller */
 173     sysbus_create_simple("l2x0", EXYNOS4210_L2X0_BASE_ADDR, NULL);
 174
 175     /* External GIC */
 176     dev = qdev_create(NULL, "exynos4210.gic");
 177     qdev_prop_set_uint32(dev, "num-cpu", EXYNOS4210_NCPUS);
 178     qdev_init_nofail(dev);
 179     busdev = sysbus_from_qdev(dev);
 180     /* Map CPU interface */
 181     sysbus_mmio_map(busdev, 0, EXYNOS4210_EXT_GIC_CPU_BASE_ADDR);
 182     /* Map Distributer interface */
 183     sysbus_mmio_map(busdev, 1, EXYNOS4210_EXT_GIC_DIST_BASE_ADDR);
 184     for (n = 0; n < EXYNOS4210_NCPUS; n++) {
 185         sysbus_connect_irq(busdev, n, gate_irq[n][1]);
 186     }
 187     for (n = 0; n < EXYNOS4210_EXT_GIC_NIRQ; n++) {
 188         s->irqs.ext_gic_irq[n] = qdev_get_gpio_in(dev, n);
 189     }
 190
 191     /* Internal Interrupt Combiner */
 192     dev = qdev_create(NULL, "exynos4210.combiner");
 193     qdev_init_nofail(dev);
 194     busdev = sysbus_from_qdev(dev);
 195     for (n = 0; n < EXYNOS4210_MAX_INT_COMBINER_OUT_IRQ; n++) {
 196         sysbus_connect_irq(busdev, n, s->irqs.int_gic_irq[n]);
 197     }
 198     exynos4210_combiner_get_gpioin(&s->irqs, dev, 0);
 199     sysbus_mmio_map(busdev, 0, EXYNOS4210_INT_COMBINER_BASE_ADDR);
 200
 201     /* External Interrupt Combiner */
 202     dev = qdev_create(NULL, "exynos4210.combiner");
 203     qdev_prop_set_uint32(dev, "external", 1);
 204     qdev_init_nofail(dev);
 205     busdev = sysbus_from_qdev(dev);
 206     for (n = 0; n < EXYNOS4210_MAX_INT_COMBINER_OUT_IRQ; n++) {
 207         sysbus_connect_irq(busdev, n, s->irqs.ext_gic_irq[n]);
 208     }
 209     exynos4210_combiner_get_gpioin(&s->irqs, dev, 1);
 210     sysbus_mmio_map(busdev, 0, EXYNOS4210_EXT_COMBINER_BASE_ADDR);
 211
 212     /* Initialize board IRQs. */
 213     exynos4210_init_board_irqs(&s->irqs);
 214
 215     /*** Memory ***/
 216
 217     /* Chip-ID and OMR */
 218     memory_region_init_ram_ptr(&s->chipid_mem, "exynos4210.chipid",
 219             sizeof(chipid_and_omr), chipid_and_omr);
 220     memory_region_set_readonly(&s->chipid_mem, true);
 221     memory_region_add_subregion(system_mem, EXYNOS4210_CHIPID_ADDR,
 222                                 &s->chipid_mem);
 223
 224     /* Internal ROM */
 225     memory_region_init_ram(&s->irom_mem, "exynos4210.irom",
 226                            EXYNOS4210_IROM_SIZE);
 227     memory_region_set_readonly(&s->irom_mem, true);
 228     memory_region_add_subregion(system_mem, EXYNOS4210_IROM_BASE_ADDR,
 229                                 &s->irom_mem);
 230     /* mirror of iROM */
 231     memory_region_init_alias(&s->irom_alias_mem, "exynos4210.irom_alias",
 232                              &s->irom_mem,
 233                              0,
 234                              EXYNOS4210_IROM_SIZE);
 235     memory_region_set_readonly(&s->irom_alias_mem, true);
 236     memory_region_add_subregion(system_mem, EXYNOS4210_IROM_MIRROR_BASE_ADDR,
 237                                 &s->irom_alias_mem);
 238
 239     /* Internal RAM */
 240     memory_region_init_ram(&s->iram_mem, "exynos4210.iram",
 241                            EXYNOS4210_IRAM_SIZE);
 242     vmstate_register_ram_global(&s->iram_mem);
 243     memory_region_add_subregion(system_mem, EXYNOS4210_IRAM_BASE_ADDR,
 244                                 &s->iram_mem);
 245
 246     /* DRAM */
 247     mem_size = ram_size;
 248     if (mem_size > EXYNOS4210_DRAM_MAX_SIZE) {
 249         memory_region_init_ram(&s->dram1_mem, "exynos4210.dram1",
 250                 mem_size - EXYNOS4210_DRAM_MAX_SIZE);
 251         vmstate_register_ram_global(&s->dram1_mem);
 252         memory_region_add_subregion(system_mem, EXYNOS4210_DRAM1_BASE_ADDR,
 253                 &s->dram1_mem);
 254         mem_size = EXYNOS4210_DRAM_MAX_SIZE;
 255     }
 256     memory_region_init_ram(&s->dram0_mem, "exynos4210.dram0", mem_size);
 257     vmstate_register_ram_global(&s->dram0_mem);
 258     memory_region_add_subregion(system_mem, EXYNOS4210_DRAM0_BASE_ADDR,
 259             &s->dram0_mem);
 260
 261    /* PMU.
 262     * The only reason of existence at the moment is that secondary CPU boot
 263     * loader uses PMU INFORM5 register as a holding pen.
 264     */
 265     sysbus_create_simple("exynos4210.pmu", EXYNOS4210_PMU_BASE_ADDR, NULL);
 266
 267     /* PWM */
 268     sysbus_create_varargs("exynos4210.pwm", EXYNOS4210_PWM_BASE_ADDR,
 269                           s->irq_table[exynos4210_get_irq(22, 0)],
 270                           s->irq_table[exynos4210_get_irq(22, 1)],
 271                           s->irq_table[exynos4210_get_irq(22, 2)],
 272                           s->irq_table[exynos4210_get_irq(22, 3)],
 273                           s->irq_table[exynos4210_get_irq(22, 4)],
 274                           NULL);
 275     /* RTC */
 276     sysbus_create_varargs("exynos4210.rtc", EXYNOS4210_RTC_BASE_ADDR,
 277                           s->irq_table[exynos4210_get_irq(23, 0)],
 278                           s->irq_table[exynos4210_get_irq(23, 1)],
 279                           NULL);
 280
 281     /* Multi Core Timer */
 282     dev = qdev_create(NULL, "exynos4210.mct");
 283     qdev_init_nofail(dev);
 284     busdev = sysbus_from_qdev(dev);
 285     for (n = 0; n < 4; n++) {
 286         /* Connect global timer interrupts to Combiner gpio_in */
 287         sysbus_connect_irq(busdev, n,
 288                 s->irq_table[exynos4210_get_irq(1, 4 + n)]);
 289     }
 290     /* Connect local timer interrupts to Combiner gpio_in */
 291     sysbus_connect_irq(busdev, 4,
 292             s->irq_table[exynos4210_get_irq(51, 0)]);
 293     sysbus_connect_irq(busdev, 5,
 294             s->irq_table[exynos4210_get_irq(35, 3)]);
 295     sysbus_mmio_map(busdev, 0, EXYNOS4210_MCT_BASE_ADDR);
 296
 297     /*** I2C ***/
 298     for (n = 0; n < EXYNOS4210_I2C_NUMBER; n++) {
 299         uint32_t addr = EXYNOS4210_I2C_BASE_ADDR + EXYNOS4210_I2C_SHIFT * n;
 300         qemu_irq i2c_irq;
 301
 302         if (n < 8) {
 303             i2c_irq = s->irq_table[exynos4210_get_irq(EXYNOS4210_I2C_INTG, n)];
 304         } else {
 305             i2c_irq = s->irq_table[exynos4210_get_irq(EXYNOS4210_HDMI_INTG, 1)];
 306         }
 307
 308         dev = qdev_create(NULL, "exynos4210.i2c");
 309         qdev_init_nofail(dev);
 310         busdev = sysbus_from_qdev(dev);
 311         sysbus_connect_irq(busdev, 0, i2c_irq);
 312         sysbus_mmio_map(busdev, 0, addr);
 313         s->i2c_if[n] = (i2c_bus *)qdev_get_child_bus(dev, "i2c");
 314     }
 315
 316
 317     /*** UARTs ***/
 318     exynos4210_uart_create(EXYNOS4210_UART0_BASE_ADDR,
 319                            EXYNOS4210_UART0_FIFO_SIZE, 0, NULL,
 320                   s->irq_table[exynos4210_get_irq(EXYNOS4210_UART_INT_GRP, 0)]);
 321
 322     exynos4210_uart_create(EXYNOS4210_UART1_BASE_ADDR,
 323                            EXYNOS4210_UART1_FIFO_SIZE, 1, NULL,
 324                   s->irq_table[exynos4210_get_irq(EXYNOS4210_UART_INT_GRP, 1)]);
 325
 326     exynos4210_uart_create(EXYNOS4210_UART2_BASE_ADDR,
 327                            EXYNOS4210_UART2_FIFO_SIZE, 2, NULL,
 328                   s->irq_table[exynos4210_get_irq(EXYNOS4210_UART_INT_GRP, 2)]);
 329
 330     exynos4210_uart_create(EXYNOS4210_UART3_BASE_ADDR,
 331                            EXYNOS4210_UART3_FIFO_SIZE, 3, NULL,
 332                   s->irq_table[exynos4210_get_irq(EXYNOS4210_UART_INT_GRP, 3)]);
 333
 334     /*** Display controller (FIMD) ***/
 335     sysbus_create_varargs("exynos4210.fimd", EXYNOS4210_FIMD0_BASE_ADDR,
 336             s->irq_table[exynos4210_get_irq(11, 0)],
 337             s->irq_table[exynos4210_get_irq(11, 1)],
 338             s->irq_table[exynos4210_get_irq(11, 2)],
 339             NULL);
 340
 341     return s;
 342 }