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 "cpu.h" 15 #include "exec/address-spaces.h" 16 #include "hw/arm/boot.h" 17 #include "hw/arm/aspeed.h" 18 #include "hw/arm/aspeed_soc.h" 19 #include "hw/boards.h" 20 #include "hw/i2c/smbus_eeprom.h" 21 #include "hw/misc/pca9552.h" 22 #include "hw/misc/tmp105.h" 23 #include "qemu/log.h" 24 #include "sysemu/block-backend.h" 25 #include "hw/loader.h" 26 #include "qemu/error-report.h" 27 #include "qemu/units.h" 28 29 static struct arm_boot_info aspeed_board_binfo = { 30 .board_id = -1, /* device-tree-only board */ 31 .nb_cpus = 1, 32 }; 33 34 struct AspeedBoardState { 35 AspeedSoCState soc; 36 MemoryRegion ram; 37 MemoryRegion max_ram; 38 }; 39 40 /* Palmetto hardware value: 0x120CE416 */ 41 #define PALMETTO_BMC_HW_STRAP1 ( \ 42 SCU_AST2400_HW_STRAP_DRAM_SIZE(DRAM_SIZE_256MB) | \ 43 SCU_AST2400_HW_STRAP_DRAM_CONFIG(2 /* DDR3 with CL=6, CWL=5 */) | \ 44 SCU_AST2400_HW_STRAP_ACPI_DIS | \ 45 SCU_AST2400_HW_STRAP_SET_CLK_SOURCE(AST2400_CLK_48M_IN) | \ 46 SCU_HW_STRAP_VGA_CLASS_CODE | \ 47 SCU_HW_STRAP_LPC_RESET_PIN | \ 48 SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_M_S_EN) | \ 49 SCU_AST2400_HW_STRAP_SET_CPU_AHB_RATIO(AST2400_CPU_AHB_RATIO_2_1) | \ 50 SCU_HW_STRAP_SPI_WIDTH | \ 51 SCU_HW_STRAP_VGA_SIZE_SET(VGA_16M_DRAM) | \ 52 SCU_AST2400_HW_STRAP_BOOT_MODE(AST2400_SPI_BOOT)) 53 54 /* AST2500 evb hardware value: 0xF100C2E6 */ 55 #define AST2500_EVB_HW_STRAP1 (( \ 56 AST2500_HW_STRAP1_DEFAULTS | \ 57 SCU_AST2500_HW_STRAP_SPI_AUTOFETCH_ENABLE | \ 58 SCU_AST2500_HW_STRAP_GPIO_STRAP_ENABLE | \ 59 SCU_AST2500_HW_STRAP_UART_DEBUG | \ 60 SCU_AST2500_HW_STRAP_DDR4_ENABLE | \ 61 SCU_HW_STRAP_MAC1_RGMII | \ 62 SCU_HW_STRAP_MAC0_RGMII) & \ 63 ~SCU_HW_STRAP_2ND_BOOT_WDT) 64 65 /* Romulus hardware value: 0xF10AD206 */ 66 #define ROMULUS_BMC_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_AST2500_HW_STRAP_ACPI_ENABLE | \ 73 SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_MASTER)) 74 75 /* Witherspoon hardware value: 0xF10AD216 (but use romulus definition) */ 76 #define WITHERSPOON_BMC_HW_STRAP1 ROMULUS_BMC_HW_STRAP1 77 78 /* 79 * The max ram region is for firmwares that scan the address space 80 * with load/store to guess how much RAM the SoC has. 81 */ 82 static uint64_t max_ram_read(void *opaque, hwaddr offset, unsigned size) 83 { 84 return 0; 85 } 86 87 static void max_ram_write(void *opaque, hwaddr offset, uint64_t value, 88 unsigned size) 89 { 90 /* Discard writes */ 91 } 92 93 static const MemoryRegionOps max_ram_ops = { 94 .read = max_ram_read, 95 .write = max_ram_write, 96 .endianness = DEVICE_NATIVE_ENDIAN, 97 }; 98 99 #define FIRMWARE_ADDR 0x0 100 101 static void write_boot_rom(DriveInfo *dinfo, hwaddr addr, size_t rom_size, 102 Error **errp) 103 { 104 BlockBackend *blk = blk_by_legacy_dinfo(dinfo); 105 uint8_t *storage; 106 int64_t size; 107 108 /* The block backend size should have already been 'validated' by 109 * the creation of the m25p80 object. 110 */ 111 size = blk_getlength(blk); 112 if (size <= 0) { 113 error_setg(errp, "failed to get flash size"); 114 return; 115 } 116 117 if (rom_size > size) { 118 rom_size = size; 119 } 120 121 storage = g_new0(uint8_t, rom_size); 122 if (blk_pread(blk, 0, storage, rom_size) < 0) { 123 error_setg(errp, "failed to read the initial flash content"); 124 return; 125 } 126 127 rom_add_blob_fixed("aspeed.boot_rom", storage, rom_size, addr); 128 g_free(storage); 129 } 130 131 static void aspeed_board_init_flashes(AspeedSMCState *s, const char *flashtype, 132 Error **errp) 133 { 134 int i ; 135 136 for (i = 0; i < s->num_cs; ++i) { 137 AspeedSMCFlash *fl = &s->flashes[i]; 138 DriveInfo *dinfo = drive_get_next(IF_MTD); 139 qemu_irq cs_line; 140 141 fl->flash = ssi_create_slave_no_init(s->spi, flashtype); 142 if (dinfo) { 143 qdev_prop_set_drive(fl->flash, "drive", blk_by_legacy_dinfo(dinfo), 144 errp); 145 } 146 qdev_init_nofail(fl->flash); 147 148 cs_line = qdev_get_gpio_in_named(fl->flash, SSI_GPIO_CS, 0); 149 sysbus_connect_irq(SYS_BUS_DEVICE(s), i + 1, cs_line); 150 } 151 } 152 153 static void aspeed_board_init(MachineState *machine, 154 const AspeedBoardConfig *cfg) 155 { 156 AspeedBoardState *bmc; 157 AspeedSoCClass *sc; 158 DriveInfo *drive0 = drive_get(IF_MTD, 0, 0); 159 ram_addr_t max_ram_size; 160 161 bmc = g_new0(AspeedBoardState, 1); 162 object_initialize_child(OBJECT(machine), "soc", &bmc->soc, 163 (sizeof(bmc->soc)), cfg->soc_name, &error_abort, 164 NULL); 165 166 sc = ASPEED_SOC_GET_CLASS(&bmc->soc); 167 168 object_property_set_uint(OBJECT(&bmc->soc), ram_size, "ram-size", 169 &error_abort); 170 object_property_set_int(OBJECT(&bmc->soc), cfg->hw_strap1, "hw-strap1", 171 &error_abort); 172 object_property_set_int(OBJECT(&bmc->soc), cfg->num_cs, "num-cs", 173 &error_abort); 174 if (machine->kernel_filename) { 175 /* 176 * When booting with a -kernel command line there is no u-boot 177 * that runs to unlock the SCU. In this case set the default to 178 * be unlocked as the kernel expects 179 */ 180 object_property_set_int(OBJECT(&bmc->soc), ASPEED_SCU_PROT_KEY, 181 "hw-prot-key", &error_abort); 182 } 183 object_property_set_bool(OBJECT(&bmc->soc), true, "realized", 184 &error_abort); 185 186 /* 187 * Allocate RAM after the memory controller has checked the size 188 * was valid. If not, a default value is used. 189 */ 190 ram_size = object_property_get_uint(OBJECT(&bmc->soc), "ram-size", 191 &error_abort); 192 193 memory_region_allocate_system_memory(&bmc->ram, NULL, "ram", ram_size); 194 memory_region_add_subregion(get_system_memory(), sc->info->sdram_base, 195 &bmc->ram); 196 object_property_add_const_link(OBJECT(&bmc->soc), "ram", OBJECT(&bmc->ram), 197 &error_abort); 198 199 max_ram_size = object_property_get_uint(OBJECT(&bmc->soc), "max-ram-size", 200 &error_abort); 201 memory_region_init_io(&bmc->max_ram, NULL, &max_ram_ops, NULL, 202 "max_ram", max_ram_size - ram_size); 203 memory_region_add_subregion(get_system_memory(), 204 sc->info->sdram_base + ram_size, 205 &bmc->max_ram); 206 207 aspeed_board_init_flashes(&bmc->soc.fmc, cfg->fmc_model, &error_abort); 208 aspeed_board_init_flashes(&bmc->soc.spi[0], cfg->spi_model, &error_abort); 209 210 /* Install first FMC flash content as a boot rom. */ 211 if (drive0) { 212 AspeedSMCFlash *fl = &bmc->soc.fmc.flashes[0]; 213 MemoryRegion *boot_rom = g_new(MemoryRegion, 1); 214 215 /* 216 * create a ROM region using the default mapping window size of 217 * the flash module. The window size is 64MB for the AST2400 218 * SoC and 128MB for the AST2500 SoC, which is twice as big as 219 * needed by the flash modules of the Aspeed machines. 220 */ 221 memory_region_init_rom(boot_rom, OBJECT(bmc), "aspeed.boot_rom", 222 fl->size, &error_abort); 223 memory_region_add_subregion(get_system_memory(), FIRMWARE_ADDR, 224 boot_rom); 225 write_boot_rom(drive0, FIRMWARE_ADDR, fl->size, &error_abort); 226 } 227 228 aspeed_board_binfo.kernel_filename = machine->kernel_filename; 229 aspeed_board_binfo.initrd_filename = machine->initrd_filename; 230 aspeed_board_binfo.kernel_cmdline = machine->kernel_cmdline; 231 aspeed_board_binfo.ram_size = ram_size; 232 aspeed_board_binfo.loader_start = sc->info->sdram_base; 233 234 if (cfg->i2c_init) { 235 cfg->i2c_init(bmc); 236 } 237 238 arm_load_kernel(ARM_CPU(first_cpu), &aspeed_board_binfo); 239 } 240 241 static void palmetto_bmc_i2c_init(AspeedBoardState *bmc) 242 { 243 AspeedSoCState *soc = &bmc->soc; 244 DeviceState *dev; 245 uint8_t *eeprom_buf = g_malloc0(32 * 1024); 246 247 /* The palmetto platform expects a ds3231 RTC but a ds1338 is 248 * enough to provide basic RTC features. Alarms will be missing */ 249 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 0), "ds1338", 0x68); 250 251 smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 0), 0x50, 252 eeprom_buf); 253 254 /* add a TMP423 temperature sensor */ 255 dev = i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 2), 256 "tmp423", 0x4c); 257 object_property_set_int(OBJECT(dev), 31000, "temperature0", &error_abort); 258 object_property_set_int(OBJECT(dev), 28000, "temperature1", &error_abort); 259 object_property_set_int(OBJECT(dev), 20000, "temperature2", &error_abort); 260 object_property_set_int(OBJECT(dev), 110000, "temperature3", &error_abort); 261 } 262 263 static void ast2500_evb_i2c_init(AspeedBoardState *bmc) 264 { 265 AspeedSoCState *soc = &bmc->soc; 266 uint8_t *eeprom_buf = g_malloc0(8 * 1024); 267 268 smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 3), 0x50, 269 eeprom_buf); 270 271 /* The AST2500 EVB expects a LM75 but a TMP105 is compatible */ 272 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 7), 273 TYPE_TMP105, 0x4d); 274 275 /* The AST2500 EVB does not have an RTC. Let's pretend that one is 276 * plugged on the I2C bus header */ 277 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32); 278 } 279 280 static void romulus_bmc_i2c_init(AspeedBoardState *bmc) 281 { 282 AspeedSoCState *soc = &bmc->soc; 283 284 /* The romulus board expects Epson RX8900 I2C RTC but a ds1338 is 285 * good enough */ 286 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32); 287 } 288 289 static void witherspoon_bmc_i2c_init(AspeedBoardState *bmc) 290 { 291 AspeedSoCState *soc = &bmc->soc; 292 uint8_t *eeprom_buf = g_malloc0(8 * 1024); 293 294 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 3), TYPE_PCA9552, 295 0x60); 296 297 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 4), "tmp423", 0x4c); 298 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 5), "tmp423", 0x4c); 299 300 /* The Witherspoon expects a TMP275 but a TMP105 is compatible */ 301 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 9), TYPE_TMP105, 302 0x4a); 303 304 /* The witherspoon board expects Epson RX8900 I2C RTC but a ds1338 is 305 * good enough */ 306 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32); 307 308 smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), 0x51, 309 eeprom_buf); 310 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), TYPE_PCA9552, 311 0x60); 312 } 313 314 static void aspeed_machine_init(MachineState *machine) 315 { 316 AspeedMachineClass *amc = ASPEED_MACHINE_GET_CLASS(machine); 317 318 aspeed_board_init(machine, amc->board); 319 } 320 321 static void aspeed_machine_class_init(ObjectClass *oc, void *data) 322 { 323 MachineClass *mc = MACHINE_CLASS(oc); 324 AspeedMachineClass *amc = ASPEED_MACHINE_CLASS(oc); 325 const AspeedBoardConfig *board = data; 326 327 mc->desc = board->desc; 328 mc->init = aspeed_machine_init; 329 mc->max_cpus = 1; 330 mc->no_sdcard = 1; 331 mc->no_floppy = 1; 332 mc->no_cdrom = 1; 333 mc->no_parallel = 1; 334 if (board->ram) { 335 mc->default_ram_size = board->ram; 336 } 337 amc->board = board; 338 } 339 340 static const TypeInfo aspeed_machine_type = { 341 .name = TYPE_ASPEED_MACHINE, 342 .parent = TYPE_MACHINE, 343 .instance_size = sizeof(AspeedMachine), 344 .class_size = sizeof(AspeedMachineClass), 345 .abstract = true, 346 }; 347 348 static const AspeedBoardConfig aspeed_boards[] = { 349 { 350 .name = MACHINE_TYPE_NAME("palmetto-bmc"), 351 .desc = "OpenPOWER Palmetto BMC (ARM926EJ-S)", 352 .soc_name = "ast2400-a1", 353 .hw_strap1 = PALMETTO_BMC_HW_STRAP1, 354 .fmc_model = "n25q256a", 355 .spi_model = "mx25l25635e", 356 .num_cs = 1, 357 .i2c_init = palmetto_bmc_i2c_init, 358 .ram = 256 * MiB, 359 }, { 360 .name = MACHINE_TYPE_NAME("ast2500-evb"), 361 .desc = "Aspeed AST2500 EVB (ARM1176)", 362 .soc_name = "ast2500-a1", 363 .hw_strap1 = AST2500_EVB_HW_STRAP1, 364 .fmc_model = "w25q256", 365 .spi_model = "mx25l25635e", 366 .num_cs = 1, 367 .i2c_init = ast2500_evb_i2c_init, 368 .ram = 512 * MiB, 369 }, { 370 .name = MACHINE_TYPE_NAME("romulus-bmc"), 371 .desc = "OpenPOWER Romulus BMC (ARM1176)", 372 .soc_name = "ast2500-a1", 373 .hw_strap1 = ROMULUS_BMC_HW_STRAP1, 374 .fmc_model = "n25q256a", 375 .spi_model = "mx66l1g45g", 376 .num_cs = 2, 377 .i2c_init = romulus_bmc_i2c_init, 378 .ram = 512 * MiB, 379 }, { 380 .name = MACHINE_TYPE_NAME("witherspoon-bmc"), 381 .desc = "OpenPOWER Witherspoon BMC (ARM1176)", 382 .soc_name = "ast2500-a1", 383 .hw_strap1 = WITHERSPOON_BMC_HW_STRAP1, 384 .fmc_model = "mx25l25635e", 385 .spi_model = "mx66l1g45g", 386 .num_cs = 2, 387 .i2c_init = witherspoon_bmc_i2c_init, 388 .ram = 512 * MiB, 389 }, 390 }; 391 392 static void aspeed_machine_types(void) 393 { 394 int i; 395 396 type_register_static(&aspeed_machine_type); 397 for (i = 0; i < ARRAY_SIZE(aspeed_boards); ++i) { 398 TypeInfo ti = { 399 .name = aspeed_boards[i].name, 400 .parent = TYPE_ASPEED_MACHINE, 401 .class_init = aspeed_machine_class_init, 402 .class_data = (void *)&aspeed_boards[i], 403 }; 404 type_register(&ti); 405 } 406 } 407 408 type_init(aspeed_machine_types) 409