hw/arm/aspeed.c

   1 /*
   2  * OpenPOWER Palmetto BMC
   3  *
   4  * Andrew Jeffery <andrew@aj.id.au>
   5  *
   6  * Copyright 2016 IBM Corp.
   7  *
   8  * This code is licensed under the GPL version 2 or later.  See
   9  * the COPYING file in the top-level directory.
  10  */
  11
  12 #include "qemu/osdep.h"
  13 #include "qapi/error.h"
  14 #include "qemu-common.h"
  15 #include "cpu.h"
  16 #include "exec/address-spaces.h"
  17 #include "hw/arm/arm.h"
  18 #include "hw/arm/aspeed_soc.h"
  19 #include "hw/boards.h"
  20 #include "hw/i2c/smbus.h"
  21 #include "qemu/log.h"
  22 #include "sysemu/block-backend.h"
  23 #include "hw/loader.h"
  24 #include "qemu/error-report.h"
  25
  26 static struct arm_boot_info aspeed_board_binfo = {
  27     .board_id = -1, /* device-tree-only board */
  28     .nb_cpus = 1,
  29 };
  30
  31 typedef struct AspeedBoardState {
  32     AspeedSoCState soc;
  33     MemoryRegion ram;
  34 } AspeedBoardState;
  35
  36 typedef struct AspeedBoardConfig {
  37     const char *soc_name;
  38     uint32_t hw_strap1;
  39     const char *fmc_model;
  40     const char *spi_model;
  41     uint32_t num_cs;
  42     void (*i2c_init)(AspeedBoardState *bmc);
  43 } AspeedBoardConfig;
  44
  45 enum {
  46     PALMETTO_BMC,
  47     AST2500_EVB,
  48     ROMULUS_BMC,
  49     WITHERSPOON_BMC,
  50 };
  51
  52 /* Palmetto hardware value: 0x120CE416 */
  53 #define PALMETTO_BMC_HW_STRAP1 (                                        \
  54         SCU_AST2400_HW_STRAP_DRAM_SIZE(DRAM_SIZE_256MB) |               \
  55         SCU_AST2400_HW_STRAP_DRAM_CONFIG(2 /* DDR3 with CL=6, CWL=5 */) | \
  56         SCU_AST2400_HW_STRAP_ACPI_DIS |                                 \
  57         SCU_AST2400_HW_STRAP_SET_CLK_SOURCE(AST2400_CLK_48M_IN) |       \
  58         SCU_HW_STRAP_VGA_CLASS_CODE |                                   \
  59         SCU_HW_STRAP_LPC_RESET_PIN |                                    \
  60         SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_M_S_EN) |                \
  61         SCU_AST2400_HW_STRAP_SET_CPU_AHB_RATIO(AST2400_CPU_AHB_RATIO_2_1) | \
  62         SCU_HW_STRAP_SPI_WIDTH |                                        \
  63         SCU_HW_STRAP_VGA_SIZE_SET(VGA_16M_DRAM) |                       \
  64         SCU_AST2400_HW_STRAP_BOOT_MODE(AST2400_SPI_BOOT))
  65
  66 /* AST2500 evb hardware value: 0xF100C2E6 */
  67 #define AST2500_EVB_HW_STRAP1 ((                                        \
  68         AST2500_HW_STRAP1_DEFAULTS |                                    \
  69         SCU_AST2500_HW_STRAP_SPI_AUTOFETCH_ENABLE |                     \
  70         SCU_AST2500_HW_STRAP_GPIO_STRAP_ENABLE |                        \
  71         SCU_AST2500_HW_STRAP_UART_DEBUG |                               \
  72         SCU_AST2500_HW_STRAP_DDR4_ENABLE |                              \
  73         SCU_HW_STRAP_MAC1_RGMII |                                       \
  74         SCU_HW_STRAP_MAC0_RGMII) &                                      \
  75         ~SCU_HW_STRAP_2ND_BOOT_WDT)
  76
  77 /* Romulus hardware value: 0xF10AD206 */
  78 #define ROMULUS_BMC_HW_STRAP1 (                                         \
  79         AST2500_HW_STRAP1_DEFAULTS |                                    \
  80         SCU_AST2500_HW_STRAP_SPI_AUTOFETCH_ENABLE |                     \
  81         SCU_AST2500_HW_STRAP_GPIO_STRAP_ENABLE |                        \
  82         SCU_AST2500_HW_STRAP_UART_DEBUG |                               \
  83         SCU_AST2500_HW_STRAP_DDR4_ENABLE |                              \
  84         SCU_AST2500_HW_STRAP_ACPI_ENABLE |                              \
  85         SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_MASTER))
  86
  87 /* Witherspoon hardware value: 0xF10AD216 (but use romulus definition) */
  88 #define WITHERSPOON_BMC_HW_STRAP1 ROMULUS_BMC_HW_STRAP1
  89
  90 static void palmetto_bmc_i2c_init(AspeedBoardState *bmc);
  91 static void ast2500_evb_i2c_init(AspeedBoardState *bmc);
  92 static void romulus_bmc_i2c_init(AspeedBoardState *bmc);
  93 static void witherspoon_bmc_i2c_init(AspeedBoardState *bmc);
  94
  95 static const AspeedBoardConfig aspeed_boards[] = {
  96     [PALMETTO_BMC] = {
  97         .soc_name  = "ast2400-a1",
  98         .hw_strap1 = PALMETTO_BMC_HW_STRAP1,
  99         .fmc_model = "n25q256a",
 100         .spi_model = "mx25l25635e",
 101         .num_cs    = 1,
 102         .i2c_init  = palmetto_bmc_i2c_init,
 103     },
 104     [AST2500_EVB]  = {
 105         .soc_name  = "ast2500-a1",
 106         .hw_strap1 = AST2500_EVB_HW_STRAP1,
 107         .fmc_model = "n25q256a",
 108         .spi_model = "mx25l25635e",
 109         .num_cs    = 1,
 110         .i2c_init  = ast2500_evb_i2c_init,
 111     },
 112     [ROMULUS_BMC]  = {
 113         .soc_name  = "ast2500-a1",
 114         .hw_strap1 = ROMULUS_BMC_HW_STRAP1,
 115         .fmc_model = "n25q256a",
 116         .spi_model = "mx66l1g45g",
 117         .num_cs    = 2,
 118         .i2c_init  = romulus_bmc_i2c_init,
 119     },
 120     [WITHERSPOON_BMC]  = {
 121         .soc_name  = "ast2500-a1",
 122         .hw_strap1 = WITHERSPOON_BMC_HW_STRAP1,
 123         .fmc_model = "mx25l25635e",
 124         .spi_model = "mx66l1g45g",
 125         .num_cs    = 2,
 126         .i2c_init  = witherspoon_bmc_i2c_init,
 127     },
 128 };
 129
 130 #define FIRMWARE_ADDR 0x0
 131
 132 static void write_boot_rom(DriveInfo *dinfo, hwaddr addr, size_t rom_size,
 133                            Error **errp)
 134 {
 135     BlockBackend *blk = blk_by_legacy_dinfo(dinfo);
 136     uint8_t *storage;
 137     int64_t size;
 138
 139     /* The block backend size should have already been 'validated' by
 140      * the creation of the m25p80 object.
 141      */
 142     size = blk_getlength(blk);
 143     if (size <= 0) {
 144         error_setg(errp, "failed to get flash size");
 145         return;
 146     }
 147
 148     if (rom_size > size) {
 149         rom_size = size;
 150     }
 151
 152     storage = g_new0(uint8_t, rom_size);
 153     if (blk_pread(blk, 0, storage, rom_size) < 0) {
 154         error_setg(errp, "failed to read the initial flash content");
 155         return;
 156     }
 157
 158     rom_add_blob_fixed("aspeed.boot_rom", storage, rom_size, addr);
 159     g_free(storage);
 160 }
 161
 162 static void aspeed_board_init_flashes(AspeedSMCState *s, const char *flashtype,
 163                                       Error **errp)
 164 {
 165     int i ;
 166
 167     for (i = 0; i < s->num_cs; ++i) {
 168         AspeedSMCFlash *fl = &s->flashes[i];
 169         DriveInfo *dinfo = drive_get_next(IF_MTD);
 170         qemu_irq cs_line;
 171
 172         fl->flash = ssi_create_slave_no_init(s->spi, flashtype);
 173         if (dinfo) {
 174             qdev_prop_set_drive(fl->flash, "drive", blk_by_legacy_dinfo(dinfo),
 175                                 errp);
 176         }
 177         qdev_init_nofail(fl->flash);
 178
 179         cs_line = qdev_get_gpio_in_named(fl->flash, SSI_GPIO_CS, 0);
 180         sysbus_connect_irq(SYS_BUS_DEVICE(s), i + 1, cs_line);
 181     }
 182 }
 183
 184 static void aspeed_board_init(MachineState *machine,
 185                               const AspeedBoardConfig *cfg)
 186 {
 187     AspeedBoardState *bmc;
 188     AspeedSoCClass *sc;
 189     DriveInfo *drive0 = drive_get(IF_MTD, 0, 0);
 190
 191     bmc = g_new0(AspeedBoardState, 1);
 192     object_initialize(&bmc->soc, (sizeof(bmc->soc)), cfg->soc_name);
 193     object_property_add_child(OBJECT(machine), "soc", OBJECT(&bmc->soc),
 194                               &error_abort);
 195
 196     sc = ASPEED_SOC_GET_CLASS(&bmc->soc);
 197
 198     object_property_set_uint(OBJECT(&bmc->soc), ram_size, "ram-size",
 199                              &error_abort);
 200     object_property_set_int(OBJECT(&bmc->soc), cfg->hw_strap1, "hw-strap1",
 201                             &error_abort);
 202     object_property_set_int(OBJECT(&bmc->soc), cfg->num_cs, "num-cs",
 203                             &error_abort);
 204     if (machine->kernel_filename) {
 205         /*
 206          * When booting with a -kernel command line there is no u-boot
 207          * that runs to unlock the SCU. In this case set the default to
 208          * be unlocked as the kernel expects
 209          */
 210         object_property_set_int(OBJECT(&bmc->soc), ASPEED_SCU_PROT_KEY,
 211                                 "hw-prot-key", &error_abort);
 212     }
 213     object_property_set_bool(OBJECT(&bmc->soc), true, "realized",
 214                              &error_abort);
 215
 216     /*
 217      * Allocate RAM after the memory controller has checked the size
 218      * was valid. If not, a default value is used.
 219      */
 220     ram_size = object_property_get_uint(OBJECT(&bmc->soc), "ram-size",
 221                                         &error_abort);
 222
 223     memory_region_allocate_system_memory(&bmc->ram, NULL, "ram", ram_size);
 224     memory_region_add_subregion(get_system_memory(), sc->info->sdram_base,
 225                                 &bmc->ram);
 226     object_property_add_const_link(OBJECT(&bmc->soc), "ram", OBJECT(&bmc->ram),
 227                                    &error_abort);
 228
 229     aspeed_board_init_flashes(&bmc->soc.fmc, cfg->fmc_model, &error_abort);
 230     aspeed_board_init_flashes(&bmc->soc.spi[0], cfg->spi_model, &error_abort);
 231
 232     /* Install first FMC flash content as a boot rom. */
 233     if (drive0) {
 234         AspeedSMCFlash *fl = &bmc->soc.fmc.flashes[0];
 235         MemoryRegion *boot_rom = g_new(MemoryRegion, 1);
 236
 237         /*
 238          * create a ROM region using the default mapping window size of
 239          * the flash module. The window size is 64MB for the AST2400
 240          * SoC and 128MB for the AST2500 SoC, which is twice as big as
 241          * needed by the flash modules of the Aspeed machines.
 242          */
 243         memory_region_init_rom(boot_rom, OBJECT(bmc), "aspeed.boot_rom",
 244                                fl->size, &error_abort);
 245         memory_region_add_subregion(get_system_memory(), FIRMWARE_ADDR,
 246                                     boot_rom);
 247         write_boot_rom(drive0, FIRMWARE_ADDR, fl->size, &error_abort);
 248     }
 249
 250     aspeed_board_binfo.kernel_filename = machine->kernel_filename;
 251     aspeed_board_binfo.initrd_filename = machine->initrd_filename;
 252     aspeed_board_binfo.kernel_cmdline = machine->kernel_cmdline;
 253     aspeed_board_binfo.ram_size = ram_size;
 254     aspeed_board_binfo.loader_start = sc->info->sdram_base;
 255
 256     if (cfg->i2c_init) {
 257         cfg->i2c_init(bmc);
 258     }
 259
 260     arm_load_kernel(ARM_CPU(first_cpu), &aspeed_board_binfo);
 261 }
 262
 263 static void palmetto_bmc_i2c_init(AspeedBoardState *bmc)
 264 {
 265     AspeedSoCState *soc = &bmc->soc;
 266     DeviceState *dev;
 267     uint8_t *eeprom_buf = g_malloc0(32 * 1024);
 268
 269     /* The palmetto platform expects a ds3231 RTC but a ds1338 is
 270      * enough to provide basic RTC features. Alarms will be missing */
 271     i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 0), "ds1338", 0x68);
 272
 273     smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 0), 0x50,
 274                           eeprom_buf);
 275
 276     /* add a TMP423 temperature sensor */
 277     dev = i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 2),
 278                            "tmp423", 0x4c);
 279     object_property_set_int(OBJECT(dev), 31000, "temperature0", &error_abort);
 280     object_property_set_int(OBJECT(dev), 28000, "temperature1", &error_abort);
 281     object_property_set_int(OBJECT(dev), 20000, "temperature2", &error_abort);
 282     object_property_set_int(OBJECT(dev), 110000, "temperature3", &error_abort);
 283 }
 284
 285 static void palmetto_bmc_init(MachineState *machine)
 286 {
 287     aspeed_board_init(machine, &aspeed_boards[PALMETTO_BMC]);
 288 }
 289
 290 static void palmetto_bmc_class_init(ObjectClass *oc, void *data)
 291 {
 292     MachineClass *mc = MACHINE_CLASS(oc);
 293
 294     mc->desc = "OpenPOWER Palmetto BMC (ARM926EJ-S)";
 295     mc->init = palmetto_bmc_init;
 296     mc->max_cpus = 1;
 297     mc->no_sdcard = 1;
 298     mc->no_floppy = 1;
 299     mc->no_cdrom = 1;
 300     mc->no_parallel = 1;
 301 }
 302
 303 static const TypeInfo palmetto_bmc_type = {
 304     .name = MACHINE_TYPE_NAME("palmetto-bmc"),
 305     .parent = TYPE_MACHINE,
 306     .class_init = palmetto_bmc_class_init,
 307 };
 308
 309 static void ast2500_evb_i2c_init(AspeedBoardState *bmc)
 310 {
 311     AspeedSoCState *soc = &bmc->soc;
 312     uint8_t *eeprom_buf = g_malloc0(8 * 1024);
 313
 314     smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 3), 0x50,
 315                           eeprom_buf);
 316
 317     /* The AST2500 EVB expects a LM75 but a TMP105 is compatible */
 318     i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 7), "tmp105", 0x4d);
 319
 320     /* The AST2500 EVB does not have an RTC. Let's pretend that one is
 321      * plugged on the I2C bus header */
 322     i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32);
 323 }
 324
 325 static void ast2500_evb_init(MachineState *machine)
 326 {
 327     aspeed_board_init(machine, &aspeed_boards[AST2500_EVB]);
 328 }
 329
 330 static void ast2500_evb_class_init(ObjectClass *oc, void *data)
 331 {
 332     MachineClass *mc = MACHINE_CLASS(oc);
 333
 334     mc->desc = "Aspeed AST2500 EVB (ARM1176)";
 335     mc->init = ast2500_evb_init;
 336     mc->max_cpus = 1;
 337     mc->no_sdcard = 1;
 338     mc->no_floppy = 1;
 339     mc->no_cdrom = 1;
 340     mc->no_parallel = 1;
 341 }
 342
 343 static const TypeInfo ast2500_evb_type = {
 344     .name = MACHINE_TYPE_NAME("ast2500-evb"),
 345     .parent = TYPE_MACHINE,
 346     .class_init = ast2500_evb_class_init,
 347 };
 348
 349 static void romulus_bmc_i2c_init(AspeedBoardState *bmc)
 350 {
 351     AspeedSoCState *soc = &bmc->soc;
 352
 353     /* The romulus board expects Epson RX8900 I2C RTC but a ds1338 is
 354      * good enough */
 355     i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32);
 356 }
 357
 358 static void romulus_bmc_init(MachineState *machine)
 359 {
 360     aspeed_board_init(machine, &aspeed_boards[ROMULUS_BMC]);
 361 }
 362
 363 static void romulus_bmc_class_init(ObjectClass *oc, void *data)
 364 {
 365     MachineClass *mc = MACHINE_CLASS(oc);
 366
 367     mc->desc = "OpenPOWER Romulus BMC (ARM1176)";
 368     mc->init = romulus_bmc_init;
 369     mc->max_cpus = 1;
 370     mc->no_sdcard = 1;
 371     mc->no_floppy = 1;
 372     mc->no_cdrom = 1;
 373     mc->no_parallel = 1;
 374 }
 375
 376 static const TypeInfo romulus_bmc_type = {
 377     .name = MACHINE_TYPE_NAME("romulus-bmc"),
 378     .parent = TYPE_MACHINE,
 379     .class_init = romulus_bmc_class_init,
 380 };
 381
 382 static void witherspoon_bmc_i2c_init(AspeedBoardState *bmc)
 383 {
 384     AspeedSoCState *soc = &bmc->soc;
 385     uint8_t *eeprom_buf = g_malloc0(8 * 1024);
 386
 387     i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 4), "tmp423", 0x4c);
 388     i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 5), "tmp423", 0x4c);
 389
 390     /* The Witherspoon expects a TMP275 but a TMP105 is compatible */
 391     i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 9), "tmp105", 0x4a);
 392
 393     /* The witherspoon board expects Epson RX8900 I2C RTC but a ds1338 is
 394      * good enough */
 395     i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32);
 396
 397     smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), 0x51,
 398                           eeprom_buf);
 399 }
 400
 401 static void witherspoon_bmc_init(MachineState *machine)
 402 {
 403     aspeed_board_init(machine, &aspeed_boards[WITHERSPOON_BMC]);
 404 }
 405
 406 static void witherspoon_bmc_class_init(ObjectClass *oc, void *data)
 407 {
 408     MachineClass *mc = MACHINE_CLASS(oc);
 409
 410     mc->desc = "OpenPOWER Witherspoon BMC (ARM1176)";
 411     mc->init = witherspoon_bmc_init;
 412     mc->max_cpus = 1;
 413     mc->no_sdcard = 1;
 414     mc->no_floppy = 1;
 415     mc->no_cdrom = 1;
 416     mc->no_parallel = 1;
 417 }
 418
 419 static const TypeInfo witherspoon_bmc_type = {
 420     .name = MACHINE_TYPE_NAME("witherspoon-bmc"),
 421     .parent = TYPE_MACHINE,
 422     .class_init = witherspoon_bmc_class_init,
 423 };
 424
 425 static void aspeed_machine_init(void)
 426 {
 427     type_register_static(&palmetto_bmc_type);
 428     type_register_static(&ast2500_evb_type);
 429     type_register_static(&romulus_bmc_type);
 430     type_register_static(&witherspoon_bmc_type);
 431 }
 432
 433 type_init(aspeed_machine_init)