hw/arm/npcm7xx_boards.c

   1 /*
   2  * Machine definitions for boards featuring an NPCM7xx SoC.
   3  *
   4  * Copyright 2020 Google LLC
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  14  * for more details.
  15  */
  16
  17 #include "qemu/osdep.h"
  18
  19 #include "exec/address-spaces.h"
  20 #include "hw/arm/npcm7xx.h"
  21 #include "hw/core/cpu.h"
  22 #include "hw/i2c/smbus_eeprom.h"
  23 #include "hw/loader.h"
  24 #include "hw/qdev-core.h"
  25 #include "hw/qdev-properties.h"
  26 #include "qapi/error.h"
  27 #include "qemu-common.h"
  28 #include "qemu/datadir.h"
  29 #include "qemu/units.h"
  30 #include "sysemu/sysemu.h"
  31
  32 #define NPCM750_EVB_POWER_ON_STRAPS 0x00001ff7
  33 #define QUANTA_GSJ_POWER_ON_STRAPS 0x00001fff
  34
  35 static const char npcm7xx_default_bootrom[] = "npcm7xx_bootrom.bin";
  36
  37 static void npcm7xx_load_bootrom(MachineState *machine, NPCM7xxState *soc)
  38 {
  39     const char *bios_name = machine->firmware ?: npcm7xx_default_bootrom;
  40     g_autofree char *filename = NULL;
  41     int ret;
  42
  43     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
  44     if (!filename) {
  45         error_report("Could not find ROM image '%s'", bios_name);
  46         if (!machine->kernel_filename) {
  47             /* We can't boot without a bootrom or a kernel image. */
  48             exit(1);
  49         }
  50         return;
  51     }
  52     ret = load_image_mr(filename, &soc->irom);
  53     if (ret < 0) {
  54         error_report("Failed to load ROM image '%s'", filename);
  55         exit(1);
  56     }
  57 }
  58
  59 static void npcm7xx_connect_flash(NPCM7xxFIUState *fiu, int cs_no,
  60                                   const char *flash_type, DriveInfo *dinfo)
  61 {
  62     DeviceState *flash;
  63     qemu_irq flash_cs;
  64
  65     flash = qdev_new(flash_type);
  66     if (dinfo) {
  67         qdev_prop_set_drive(flash, "drive", blk_by_legacy_dinfo(dinfo));
  68     }
  69     qdev_realize_and_unref(flash, BUS(fiu->spi), &error_fatal);
  70
  71     flash_cs = qdev_get_gpio_in_named(flash, SSI_GPIO_CS, 0);
  72     qdev_connect_gpio_out_named(DEVICE(fiu), "cs", cs_no, flash_cs);
  73 }
  74
  75 static void npcm7xx_connect_dram(NPCM7xxState *soc, MemoryRegion *dram)
  76 {
  77     memory_region_add_subregion(get_system_memory(), NPCM7XX_DRAM_BA, dram);
  78
  79     object_property_set_link(OBJECT(soc), "dram-mr", OBJECT(dram),
  80                              &error_abort);
  81 }
  82
  83 static NPCM7xxState *npcm7xx_create_soc(MachineState *machine,
  84                                         uint32_t hw_straps)
  85 {
  86     NPCM7xxMachineClass *nmc = NPCM7XX_MACHINE_GET_CLASS(machine);
  87     MachineClass *mc = MACHINE_CLASS(nmc);
  88     Object *obj;
  89
  90     if (strcmp(machine->cpu_type, mc->default_cpu_type) != 0) {
  91         error_report("This board can only be used with %s",
  92                      mc->default_cpu_type);
  93         exit(1);
  94     }
  95
  96     obj = object_new_with_props(nmc->soc_type, OBJECT(machine), "soc",
  97                                 &error_abort, NULL);
  98     object_property_set_uint(obj, "power-on-straps", hw_straps, &error_abort);
  99
 100     return NPCM7XX(obj);
 101 }
 102
 103 static I2CBus *npcm7xx_i2c_get_bus(NPCM7xxState *soc, uint32_t num)
 104 {
 105     g_assert(num < ARRAY_SIZE(soc->smbus));
 106     return I2C_BUS(qdev_get_child_bus(DEVICE(&soc->smbus[num]), "i2c-bus"));
 107 }
 108
 109 static void at24c_eeprom_init(NPCM7xxState *soc, int bus, uint8_t addr,
 110                               uint32_t rsize)
 111 {
 112     I2CBus *i2c_bus = npcm7xx_i2c_get_bus(soc, bus);
 113     I2CSlave *i2c_dev = i2c_slave_new("at24c-eeprom", addr);
 114     DeviceState *dev = DEVICE(i2c_dev);
 115
 116     qdev_prop_set_uint32(dev, "rom-size", rsize);
 117     i2c_slave_realize_and_unref(i2c_dev, i2c_bus, &error_abort);
 118 }
 119
 120 static void npcm7xx_init_pwm_splitter(NPCM7xxMachine *machine,
 121                                       NPCM7xxState *soc, const int *fan_counts)
 122 {
 123     SplitIRQ *splitters = machine->fan_splitter;
 124
 125     /*
 126      * PWM 0~3 belong to module 0 output 0~3.
 127      * PWM 4~7 belong to module 1 output 0~3.
 128      */
 129     for (int i = 0; i < NPCM7XX_NR_PWM_MODULES; ++i) {
 130         for (int j = 0; j < NPCM7XX_PWM_PER_MODULE; ++j) {
 131             int splitter_no = i * NPCM7XX_PWM_PER_MODULE + j;
 132             DeviceState *splitter;
 133
 134             if (fan_counts[splitter_no] < 1) {
 135                 continue;
 136             }
 137             object_initialize_child(OBJECT(machine), "fan-splitter[*]",
 138                                     &splitters[splitter_no], TYPE_SPLIT_IRQ);
 139             splitter = DEVICE(&splitters[splitter_no]);
 140             qdev_prop_set_uint16(splitter, "num-lines",
 141                                  fan_counts[splitter_no]);
 142             qdev_realize(splitter, NULL, &error_abort);
 143             qdev_connect_gpio_out_named(DEVICE(&soc->pwm[i]), "duty-gpio-out",
 144                                         j, qdev_get_gpio_in(splitter, 0));
 145         }
 146     }
 147 }
 148
 149 static void npcm7xx_connect_pwm_fan(NPCM7xxState *soc, SplitIRQ *splitter,
 150                                     int fan_no, int output_no)
 151 {
 152     DeviceState *fan;
 153     int fan_input;
 154     qemu_irq fan_duty_gpio;
 155
 156     g_assert(fan_no >= 0 && fan_no <= NPCM7XX_MFT_MAX_FAN_INPUT);
 157     /*
 158      * Fan 0~1 belong to module 0 input 0~1.
 159      * Fan 2~3 belong to module 1 input 0~1.
 160      * ...
 161      * Fan 14~15 belong to module 7 input 0~1.
 162      * Fan 16~17 belong to module 0 input 2~3.
 163      * Fan 18~19 belong to module 1 input 2~3.
 164      */
 165     if (fan_no < 16) {
 166         fan = DEVICE(&soc->mft[fan_no / 2]);
 167         fan_input = fan_no % 2;
 168     } else {
 169         fan = DEVICE(&soc->mft[(fan_no - 16) / 2]);
 170         fan_input = fan_no % 2 + 2;
 171     }
 172
 173     /* Connect the Fan to PWM module */
 174     fan_duty_gpio = qdev_get_gpio_in_named(fan, "duty", fan_input);
 175     qdev_connect_gpio_out(DEVICE(splitter), output_no, fan_duty_gpio);
 176 }
 177
 178 static void npcm750_evb_i2c_init(NPCM7xxState *soc)
 179 {
 180     /* lm75 temperature sensor on SVB, tmp105 is compatible */
 181     i2c_slave_create_simple(npcm7xx_i2c_get_bus(soc, 0), "tmp105", 0x48);
 182     /* lm75 temperature sensor on EB, tmp105 is compatible */
 183     i2c_slave_create_simple(npcm7xx_i2c_get_bus(soc, 1), "tmp105", 0x48);
 184     /* tmp100 temperature sensor on EB, tmp105 is compatible */
 185     i2c_slave_create_simple(npcm7xx_i2c_get_bus(soc, 2), "tmp105", 0x48);
 186     /* tmp100 temperature sensor on SVB, tmp105 is compatible */
 187     i2c_slave_create_simple(npcm7xx_i2c_get_bus(soc, 6), "tmp105", 0x48);
 188 }
 189
 190 static void npcm750_evb_fan_init(NPCM7xxMachine *machine, NPCM7xxState *soc)
 191 {
 192     SplitIRQ *splitter = machine->fan_splitter;
 193     static const int fan_counts[] = {2, 2, 2, 2, 2, 2, 2, 2};
 194
 195     npcm7xx_init_pwm_splitter(machine, soc, fan_counts);
 196     npcm7xx_connect_pwm_fan(soc, &splitter[0], 0x00, 0);
 197     npcm7xx_connect_pwm_fan(soc, &splitter[0], 0x01, 1);
 198     npcm7xx_connect_pwm_fan(soc, &splitter[1], 0x02, 0);
 199     npcm7xx_connect_pwm_fan(soc, &splitter[1], 0x03, 1);
 200     npcm7xx_connect_pwm_fan(soc, &splitter[2], 0x04, 0);
 201     npcm7xx_connect_pwm_fan(soc, &splitter[2], 0x05, 1);
 202     npcm7xx_connect_pwm_fan(soc, &splitter[3], 0x06, 0);
 203     npcm7xx_connect_pwm_fan(soc, &splitter[3], 0x07, 1);
 204     npcm7xx_connect_pwm_fan(soc, &splitter[4], 0x08, 0);
 205     npcm7xx_connect_pwm_fan(soc, &splitter[4], 0x09, 1);
 206     npcm7xx_connect_pwm_fan(soc, &splitter[5], 0x0a, 0);
 207     npcm7xx_connect_pwm_fan(soc, &splitter[5], 0x0b, 1);
 208     npcm7xx_connect_pwm_fan(soc, &splitter[6], 0x0c, 0);
 209     npcm7xx_connect_pwm_fan(soc, &splitter[6], 0x0d, 1);
 210     npcm7xx_connect_pwm_fan(soc, &splitter[7], 0x0e, 0);
 211     npcm7xx_connect_pwm_fan(soc, &splitter[7], 0x0f, 1);
 212 }
 213
 214 static void quanta_gsj_i2c_init(NPCM7xxState *soc)
 215 {
 216     /* GSJ machine have 4 max31725 temperature sensors, tmp105 is compatible. */
 217     i2c_slave_create_simple(npcm7xx_i2c_get_bus(soc, 1), "tmp105", 0x5c);
 218     i2c_slave_create_simple(npcm7xx_i2c_get_bus(soc, 2), "tmp105", 0x5c);
 219     i2c_slave_create_simple(npcm7xx_i2c_get_bus(soc, 3), "tmp105", 0x5c);
 220     i2c_slave_create_simple(npcm7xx_i2c_get_bus(soc, 4), "tmp105", 0x5c);
 221
 222     at24c_eeprom_init(soc, 9, 0x55, 8192);
 223     at24c_eeprom_init(soc, 10, 0x55, 8192);
 224
 225     /* TODO: Add additional i2c devices. */
 226 }
 227
 228 static void quanta_gsj_fan_init(NPCM7xxMachine *machine, NPCM7xxState *soc)
 229 {
 230     SplitIRQ *splitter = machine->fan_splitter;
 231     static const int fan_counts[] = {2, 2, 2, 0, 0, 0, 0, 0};
 232
 233     npcm7xx_init_pwm_splitter(machine, soc, fan_counts);
 234     npcm7xx_connect_pwm_fan(soc, &splitter[0], 0x00, 0);
 235     npcm7xx_connect_pwm_fan(soc, &splitter[0], 0x01, 1);
 236     npcm7xx_connect_pwm_fan(soc, &splitter[1], 0x02, 0);
 237     npcm7xx_connect_pwm_fan(soc, &splitter[1], 0x03, 1);
 238     npcm7xx_connect_pwm_fan(soc, &splitter[2], 0x04, 0);
 239     npcm7xx_connect_pwm_fan(soc, &splitter[2], 0x05, 1);
 240 }
 241
 242 static void npcm750_evb_init(MachineState *machine)
 243 {
 244     NPCM7xxState *soc;
 245
 246     soc = npcm7xx_create_soc(machine, NPCM750_EVB_POWER_ON_STRAPS);
 247     npcm7xx_connect_dram(soc, machine->ram);
 248     qdev_realize(DEVICE(soc), NULL, &error_fatal);
 249
 250     npcm7xx_load_bootrom(machine, soc);
 251     npcm7xx_connect_flash(&soc->fiu[0], 0, "w25q256", drive_get(IF_MTD, 0, 0));
 252     npcm750_evb_i2c_init(soc);
 253     npcm750_evb_fan_init(NPCM7XX_MACHINE(machine), soc);
 254     npcm7xx_load_kernel(machine, soc);
 255 }
 256
 257 static void quanta_gsj_init(MachineState *machine)
 258 {
 259     NPCM7xxState *soc;
 260
 261     soc = npcm7xx_create_soc(machine, QUANTA_GSJ_POWER_ON_STRAPS);
 262     npcm7xx_connect_dram(soc, machine->ram);
 263     qdev_realize(DEVICE(soc), NULL, &error_fatal);
 264
 265     npcm7xx_load_bootrom(machine, soc);
 266     npcm7xx_connect_flash(&soc->fiu[0], 0, "mx25l25635e",
 267                           drive_get(IF_MTD, 0, 0));
 268     quanta_gsj_i2c_init(soc);
 269     quanta_gsj_fan_init(NPCM7XX_MACHINE(machine), soc);
 270     npcm7xx_load_kernel(machine, soc);
 271 }
 272
 273 static void npcm7xx_set_soc_type(NPCM7xxMachineClass *nmc, const char *type)
 274 {
 275     NPCM7xxClass *sc = NPCM7XX_CLASS(object_class_by_name(type));
 276     MachineClass *mc = MACHINE_CLASS(nmc);
 277
 278     nmc->soc_type = type;
 279     mc->default_cpus = mc->min_cpus = mc->max_cpus = sc->num_cpus;
 280 }
 281
 282 static void npcm7xx_machine_class_init(ObjectClass *oc, void *data)
 283 {
 284     MachineClass *mc = MACHINE_CLASS(oc);
 285
 286     mc->no_floppy = 1;
 287     mc->no_cdrom = 1;
 288     mc->no_parallel = 1;
 289     mc->default_ram_id = "ram";
 290     mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a9");
 291 }
 292
 293 /*
 294  * Schematics:
 295  * https://github.com/Nuvoton-Israel/nuvoton-info/blob/master/npcm7xx-poleg/evaluation-board/board_deliverables/NPCM750x_EB_ver.A1.1_COMPLETE.pdf
 296  */
 297 static void npcm750_evb_machine_class_init(ObjectClass *oc, void *data)
 298 {
 299     NPCM7xxMachineClass *nmc = NPCM7XX_MACHINE_CLASS(oc);
 300     MachineClass *mc = MACHINE_CLASS(oc);
 301
 302     npcm7xx_set_soc_type(nmc, TYPE_NPCM750);
 303
 304     mc->desc = "Nuvoton NPCM750 Evaluation Board (Cortex A9)";
 305     mc->init = npcm750_evb_init;
 306     mc->default_ram_size = 512 * MiB;
 307 };
 308
 309 static void gsj_machine_class_init(ObjectClass *oc, void *data)
 310 {
 311     NPCM7xxMachineClass *nmc = NPCM7XX_MACHINE_CLASS(oc);
 312     MachineClass *mc = MACHINE_CLASS(oc);
 313
 314     npcm7xx_set_soc_type(nmc, TYPE_NPCM730);
 315
 316     mc->desc = "Quanta GSJ (Cortex A9)";
 317     mc->init = quanta_gsj_init;
 318     mc->default_ram_size = 512 * MiB;
 319 };
 320
 321 static const TypeInfo npcm7xx_machine_types[] = {
 322     {
 323         .name           = TYPE_NPCM7XX_MACHINE,
 324         .parent         = TYPE_MACHINE,
 325         .instance_size  = sizeof(NPCM7xxMachine),
 326         .class_size     = sizeof(NPCM7xxMachineClass),
 327         .class_init     = npcm7xx_machine_class_init,
 328         .abstract       = true,
 329     }, {
 330         .name           = MACHINE_TYPE_NAME("npcm750-evb"),
 331         .parent         = TYPE_NPCM7XX_MACHINE,
 332         .class_init     = npcm750_evb_machine_class_init,
 333     }, {
 334         .name           = MACHINE_TYPE_NAME("quanta-gsj"),
 335         .parent         = TYPE_NPCM7XX_MACHINE,
 336         .class_init     = gsj_machine_class_init,
 337     },
 338 };
 339
 340 DEFINE_TYPES(npcm7xx_machine_types)