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 witherspoon_bmc_i2c_init(AspeedBoardState *bmc);
  92
  93 static const AspeedBoardConfig aspeed_boards[] = {
  94     [PALMETTO_BMC] = {
  95         .soc_name  = "ast2400-a1",
  96         .hw_strap1 = PALMETTO_BMC_HW_STRAP1,
  97         .fmc_model = "n25q256a",
  98         .spi_model = "mx25l25635e",
  99         .num_cs    = 1,
 100         .i2c_init  = palmetto_bmc_i2c_init,
 101     },
 102     [AST2500_EVB]  = {
 103         .soc_name  = "ast2500-a1",
 104         .hw_strap1 = AST2500_EVB_HW_STRAP1,
 105         .fmc_model = "n25q256a",
 106         .spi_model = "mx25l25635e",
 107         .num_cs    = 1,
 108         .i2c_init  = ast2500_evb_i2c_init,
 109     },
 110     [ROMULUS_BMC]  = {
 111         .soc_name  = "ast2500-a1",
 112         .hw_strap1 = ROMULUS_BMC_HW_STRAP1,
 113         .fmc_model = "n25q256a",
 114         .spi_model = "mx66l1g45g",
 115         .num_cs    = 2,
 116     },
 117     [WITHERSPOON_BMC]  = {
 118         .soc_name  = "ast2500-a1",
 119         .hw_strap1 = WITHERSPOON_BMC_HW_STRAP1,
 120         .fmc_model = "mx25l25635e",
 121         .spi_model = "mx66l1g45g",
 122         .num_cs    = 2,
 123         .i2c_init  = witherspoon_bmc_i2c_init,
 124     },
 125 };
 126
 127 #define FIRMWARE_ADDR 0x0
 128
 129 static void write_boot_rom(DriveInfo *dinfo, hwaddr addr, size_t rom_size,
 130                            Error **errp)
 131 {
 132     BlockBackend *blk = blk_by_legacy_dinfo(dinfo);
 133     uint8_t *storage;
 134     int64_t size;
 135
 136     /* The block backend size should have already been 'validated' by
 137      * the creation of the m25p80 object.
 138      */
 139     size = blk_getlength(blk);
 140     if (size <= 0) {
 141         error_setg(errp, "failed to get flash size");
 142         return;
 143     }
 144
 145     if (rom_size > size) {
 146         rom_size = size;
 147     }
 148
 149     storage = g_new0(uint8_t, rom_size);
 150     if (blk_pread(blk, 0, storage, rom_size) < 0) {
 151         error_setg(errp, "failed to read the initial flash content");
 152         return;
 153     }
 154
 155     rom_add_blob_fixed("aspeed.boot_rom", storage, rom_size, addr);
 156     g_free(storage);
 157 }
 158
 159 static void aspeed_board_init_flashes(AspeedSMCState *s, const char *flashtype,
 160                                       Error **errp)
 161 {
 162     int i ;
 163
 164     for (i = 0; i < s->num_cs; ++i) {
 165         AspeedSMCFlash *fl = &s->flashes[i];
 166         DriveInfo *dinfo = drive_get_next(IF_MTD);
 167         qemu_irq cs_line;
 168
 169         fl->flash = ssi_create_slave_no_init(s->spi, flashtype);
 170         if (dinfo) {
 171             qdev_prop_set_drive(fl->flash, "drive", blk_by_legacy_dinfo(dinfo),
 172                                 errp);
 173         }
 174         qdev_init_nofail(fl->flash);
 175
 176         cs_line = qdev_get_gpio_in_named(fl->flash, SSI_GPIO_CS, 0);
 177         sysbus_connect_irq(SYS_BUS_DEVICE(s), i + 1, cs_line);
 178     }
 179 }
 180
 181 static void aspeed_board_init(MachineState *machine,
 182                               const AspeedBoardConfig *cfg)
 183 {
 184     AspeedBoardState *bmc;
 185     AspeedSoCClass *sc;
 186     DriveInfo *drive0 = drive_get(IF_MTD, 0, 0);
 187
 188     bmc = g_new0(AspeedBoardState, 1);
 189     object_initialize(&bmc->soc, (sizeof(bmc->soc)), cfg->soc_name);
 190     object_property_add_child(OBJECT(machine), "soc", OBJECT(&bmc->soc),
 191                               &error_abort);
 192
 193     sc = ASPEED_SOC_GET_CLASS(&bmc->soc);
 194
 195     object_property_set_uint(OBJECT(&bmc->soc), ram_size, "ram-size",
 196                              &error_abort);
 197     object_property_set_int(OBJECT(&bmc->soc), cfg->hw_strap1, "hw-strap1",
 198                             &error_abort);
 199     object_property_set_int(OBJECT(&bmc->soc), cfg->num_cs, "num-cs",
 200                             &error_abort);
 201     if (machine->kernel_filename) {
 202         /*
 203          * When booting with a -kernel command line there is no u-boot
 204          * that runs to unlock the SCU. In this case set the default to
 205          * be unlocked as the kernel expects
 206          */
 207         object_property_set_int(OBJECT(&bmc->soc), ASPEED_SCU_PROT_KEY,
 208                                 "hw-prot-key", &error_abort);
 209     }
 210     object_property_set_bool(OBJECT(&bmc->soc), true, "realized",
 211                              &error_abort);
 212
 213     /*
 214      * Allocate RAM after the memory controller has checked the size
 215      * was valid. If not, a default value is used.
 216      */
 217     ram_size = object_property_get_uint(OBJECT(&bmc->soc), "ram-size",
 218                                         &error_abort);
 219
 220     memory_region_allocate_system_memory(&bmc->ram, NULL, "ram", ram_size);
 221     memory_region_add_subregion(get_system_memory(), sc->info->sdram_base,
 222                                 &bmc->ram);
 223     object_property_add_const_link(OBJECT(&bmc->soc), "ram", OBJECT(&bmc->ram),
 224                                    &error_abort);
 225
 226     aspeed_board_init_flashes(&bmc->soc.fmc, cfg->fmc_model, &error_abort);
 227     aspeed_board_init_flashes(&bmc->soc.spi[0], cfg->spi_model, &error_abort);
 228
 229     /* Install first FMC flash content as a boot rom. */
 230     if (drive0) {
 231         AspeedSMCFlash *fl = &bmc->soc.fmc.flashes[0];
 232         MemoryRegion *boot_rom = g_new(MemoryRegion, 1);
 233
 234         /*
 235          * create a ROM region using the default mapping window size of
 236          * the flash module. The window size is 64MB for the AST2400
 237          * SoC and 128MB for the AST2500 SoC, which is twice as big as
 238          * needed by the flash modules of the Aspeed machines.
 239          */
 240         memory_region_init_rom(boot_rom, OBJECT(bmc), "aspeed.boot_rom",
 241                                fl->size, &error_abort);
 242         memory_region_add_subregion(get_system_memory(), FIRMWARE_ADDR,
 243                                     boot_rom);
 244         write_boot_rom(drive0, FIRMWARE_ADDR, fl->size, &error_abort);
 245     }
 246
 247     aspeed_board_binfo.kernel_filename = machine->kernel_filename;
 248     aspeed_board_binfo.initrd_filename = machine->initrd_filename;
 249     aspeed_board_binfo.kernel_cmdline = machine->kernel_cmdline;
 250     aspeed_board_binfo.ram_size = ram_size;
 251     aspeed_board_binfo.loader_start = sc->info->sdram_base;
 252
 253     if (cfg->i2c_init) {
 254         cfg->i2c_init(bmc);
 255     }
 256
 257     arm_load_kernel(ARM_CPU(first_cpu), &aspeed_board_binfo);
 258 }
 259
 260 static void palmetto_bmc_i2c_init(AspeedBoardState *bmc)
 261 {
 262     AspeedSoCState *soc = &bmc->soc;
 263     DeviceState *dev;
 264
 265     /* The palmetto platform expects a ds3231 RTC but a ds1338 is
 266      * enough to provide basic RTC features. Alarms will be missing */
 267     i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 0), "ds1338", 0x68);
 268
 269     /* add a TMP423 temperature sensor */
 270     dev = i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 2),
 271                            "tmp423", 0x4c);
 272     object_property_set_int(OBJECT(dev), 31000, "temperature0", &error_abort);
 273     object_property_set_int(OBJECT(dev), 28000, "temperature1", &error_abort);
 274     object_property_set_int(OBJECT(dev), 20000, "temperature2", &error_abort);
 275     object_property_set_int(OBJECT(dev), 110000, "temperature3", &error_abort);
 276 }
 277
 278 static void palmetto_bmc_init(MachineState *machine)
 279 {
 280     aspeed_board_init(machine, &aspeed_boards[PALMETTO_BMC]);
 281 }
 282
 283 static void palmetto_bmc_class_init(ObjectClass *oc, void *data)
 284 {
 285     MachineClass *mc = MACHINE_CLASS(oc);
 286
 287     mc->desc = "OpenPOWER Palmetto BMC (ARM926EJ-S)";
 288     mc->init = palmetto_bmc_init;
 289     mc->max_cpus = 1;
 290     mc->no_sdcard = 1;
 291     mc->no_floppy = 1;
 292     mc->no_cdrom = 1;
 293     mc->no_parallel = 1;
 294 }
 295
 296 static const TypeInfo palmetto_bmc_type = {
 297     .name = MACHINE_TYPE_NAME("palmetto-bmc"),
 298     .parent = TYPE_MACHINE,
 299     .class_init = palmetto_bmc_class_init,
 300 };
 301
 302 static void ast2500_evb_i2c_init(AspeedBoardState *bmc)
 303 {
 304     AspeedSoCState *soc = &bmc->soc;
 305
 306     /* The AST2500 EVB expects a LM75 but a TMP105 is compatible */
 307     i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 7), "tmp105", 0x4d);
 308 }
 309
 310 static void ast2500_evb_init(MachineState *machine)
 311 {
 312     aspeed_board_init(machine, &aspeed_boards[AST2500_EVB]);
 313 }
 314
 315 static void ast2500_evb_class_init(ObjectClass *oc, void *data)
 316 {
 317     MachineClass *mc = MACHINE_CLASS(oc);
 318
 319     mc->desc = "Aspeed AST2500 EVB (ARM1176)";
 320     mc->init = ast2500_evb_init;
 321     mc->max_cpus = 1;
 322     mc->no_sdcard = 1;
 323     mc->no_floppy = 1;
 324     mc->no_cdrom = 1;
 325     mc->no_parallel = 1;
 326 }
 327
 328 static const TypeInfo ast2500_evb_type = {
 329     .name = MACHINE_TYPE_NAME("ast2500-evb"),
 330     .parent = TYPE_MACHINE,
 331     .class_init = ast2500_evb_class_init,
 332 };
 333
 334 static void romulus_bmc_init(MachineState *machine)
 335 {
 336     aspeed_board_init(machine, &aspeed_boards[ROMULUS_BMC]);
 337 }
 338
 339 static void romulus_bmc_class_init(ObjectClass *oc, void *data)
 340 {
 341     MachineClass *mc = MACHINE_CLASS(oc);
 342
 343     mc->desc = "OpenPOWER Romulus BMC (ARM1176)";
 344     mc->init = romulus_bmc_init;
 345     mc->max_cpus = 1;
 346     mc->no_sdcard = 1;
 347     mc->no_floppy = 1;
 348     mc->no_cdrom = 1;
 349     mc->no_parallel = 1;
 350 }
 351
 352 static const TypeInfo romulus_bmc_type = {
 353     .name = MACHINE_TYPE_NAME("romulus-bmc"),
 354     .parent = TYPE_MACHINE,
 355     .class_init = romulus_bmc_class_init,
 356 };
 357
 358 static void witherspoon_bmc_i2c_init(AspeedBoardState *bmc)
 359 {
 360     AspeedSoCState *soc = &bmc->soc;
 361
 362     i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 4), "tmp423", 0x4c);
 363     i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 5), "tmp423", 0x4c);
 364
 365     /* The Witherspoon expects a TMP275 but a TMP105 is compatible */
 366     i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 9), "tmp105", 0x4a);
 367 }
 368
 369 static void witherspoon_bmc_init(MachineState *machine)
 370 {
 371     aspeed_board_init(machine, &aspeed_boards[WITHERSPOON_BMC]);
 372 }
 373
 374 static void witherspoon_bmc_class_init(ObjectClass *oc, void *data)
 375 {
 376     MachineClass *mc = MACHINE_CLASS(oc);
 377
 378     mc->desc = "OpenPOWER Witherspoon BMC (ARM1176)";
 379     mc->init = witherspoon_bmc_init;
 380     mc->max_cpus = 1;
 381     mc->no_sdcard = 1;
 382     mc->no_floppy = 1;
 383     mc->no_cdrom = 1;
 384     mc->no_parallel = 1;
 385 }
 386
 387 static const TypeInfo witherspoon_bmc_type = {
 388     .name = MACHINE_TYPE_NAME("witherspoon-bmc"),
 389     .parent = TYPE_MACHINE,
 390     .class_init = witherspoon_bmc_class_init,
 391 };
 392
 393 static void aspeed_machine_init(void)
 394 {
 395     type_register_static(&palmetto_bmc_type);
 396     type_register_static(&ast2500_evb_type);
 397     type_register_static(&romulus_bmc_type);
 398     type_register_static(&witherspoon_bmc_type);
 399 }
 400
 401 type_init(aspeed_machine_init)