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