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/boot.h" 18 #include "hw/arm/aspeed.h" 19 #include "hw/arm/aspeed_soc.h" 20 #include "hw/boards.h" 21 #include "hw/i2c/smbus_eeprom.h" 22 #include "hw/misc/pca9552.h" 23 #include "hw/misc/tmp105.h" 24 #include "qemu/log.h" 25 #include "sysemu/block-backend.h" 26 #include "hw/loader.h" 27 #include "qemu/error-report.h" 28 #include "qemu/units.h" 29 30 static struct arm_boot_info aspeed_board_binfo = { 31 .board_id = -1, /* device-tree-only board */ 32 .nb_cpus = 1, 33 }; 34 35 struct AspeedBoardState { 36 AspeedSoCState soc; 37 MemoryRegion ram; 38 MemoryRegion max_ram; 39 }; 40 41 /* Palmetto hardware value: 0x120CE416 */ 42 #define PALMETTO_BMC_HW_STRAP1 ( \ 43 SCU_AST2400_HW_STRAP_DRAM_SIZE(DRAM_SIZE_256MB) | \ 44 SCU_AST2400_HW_STRAP_DRAM_CONFIG(2 /* DDR3 with CL=6, CWL=5 */) | \ 45 SCU_AST2400_HW_STRAP_ACPI_DIS | \ 46 SCU_AST2400_HW_STRAP_SET_CLK_SOURCE(AST2400_CLK_48M_IN) | \ 47 SCU_HW_STRAP_VGA_CLASS_CODE | \ 48 SCU_HW_STRAP_LPC_RESET_PIN | \ 49 SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_M_S_EN) | \ 50 SCU_AST2400_HW_STRAP_SET_CPU_AHB_RATIO(AST2400_CPU_AHB_RATIO_2_1) | \ 51 SCU_HW_STRAP_SPI_WIDTH | \ 52 SCU_HW_STRAP_VGA_SIZE_SET(VGA_16M_DRAM) | \ 53 SCU_AST2400_HW_STRAP_BOOT_MODE(AST2400_SPI_BOOT)) 54 55 /* AST2500 evb hardware value: 0xF100C2E6 */ 56 #define AST2500_EVB_HW_STRAP1 (( \ 57 AST2500_HW_STRAP1_DEFAULTS | \ 58 SCU_AST2500_HW_STRAP_SPI_AUTOFETCH_ENABLE | \ 59 SCU_AST2500_HW_STRAP_GPIO_STRAP_ENABLE | \ 60 SCU_AST2500_HW_STRAP_UART_DEBUG | \ 61 SCU_AST2500_HW_STRAP_DDR4_ENABLE | \ 62 SCU_HW_STRAP_MAC1_RGMII | \ 63 SCU_HW_STRAP_MAC0_RGMII) & \ 64 ~SCU_HW_STRAP_2ND_BOOT_WDT) 65 66 /* Romulus hardware value: 0xF10AD206 */ 67 #define ROMULUS_BMC_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_AST2500_HW_STRAP_ACPI_ENABLE | \ 74 SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_MASTER)) 75 76 /* Witherspoon hardware value: 0xF10AD216 (but use romulus definition) */ 77 #define WITHERSPOON_BMC_HW_STRAP1 ROMULUS_BMC_HW_STRAP1 78 79 /* 80 * The max ram region is for firmwares that scan the address space 81 * with load/store to guess how much RAM the SoC has. 82 */ 83 static uint64_t max_ram_read(void *opaque, hwaddr offset, unsigned size) 84 { 85 return 0; 86 } 87 88 static void max_ram_write(void *opaque, hwaddr offset, uint64_t value, 89 unsigned size) 90 { 91 /* Discard writes */ 92 } 93 94 static const MemoryRegionOps max_ram_ops = { 95 .read = max_ram_read, 96 .write = max_ram_write, 97 .endianness = DEVICE_NATIVE_ENDIAN, 98 }; 99 100 #define FIRMWARE_ADDR 0x0 101 102 static void write_boot_rom(DriveInfo *dinfo, hwaddr addr, size_t rom_size, 103 Error **errp) 104 { 105 BlockBackend *blk = blk_by_legacy_dinfo(dinfo); 106 uint8_t *storage; 107 int64_t size; 108 109 /* The block backend size should have already been 'validated' by 110 * the creation of the m25p80 object. 111 */ 112 size = blk_getlength(blk); 113 if (size <= 0) { 114 error_setg(errp, "failed to get flash size"); 115 return; 116 } 117 118 if (rom_size > size) { 119 rom_size = size; 120 } 121 122 storage = g_new0(uint8_t, rom_size); 123 if (blk_pread(blk, 0, storage, rom_size) < 0) { 124 error_setg(errp, "failed to read the initial flash content"); 125 return; 126 } 127 128 rom_add_blob_fixed("aspeed.boot_rom", storage, rom_size, addr); 129 g_free(storage); 130 } 131 132 static void aspeed_board_init_flashes(AspeedSMCState *s, const char *flashtype, 133 Error **errp) 134 { 135 int i ; 136 137 for (i = 0; i < s->num_cs; ++i) { 138 AspeedSMCFlash *fl = &s->flashes[i]; 139 DriveInfo *dinfo = drive_get_next(IF_MTD); 140 qemu_irq cs_line; 141 142 fl->flash = ssi_create_slave_no_init(s->spi, flashtype); 143 if (dinfo) { 144 qdev_prop_set_drive(fl->flash, "drive", blk_by_legacy_dinfo(dinfo), 145 errp); 146 } 147 qdev_init_nofail(fl->flash); 148 149 cs_line = qdev_get_gpio_in_named(fl->flash, SSI_GPIO_CS, 0); 150 sysbus_connect_irq(SYS_BUS_DEVICE(s), i + 1, cs_line); 151 } 152 } 153 154 static void aspeed_board_init(MachineState *machine, 155 const AspeedBoardConfig *cfg) 156 { 157 AspeedBoardState *bmc; 158 AspeedSoCClass *sc; 159 DriveInfo *drive0 = drive_get(IF_MTD, 0, 0); 160 ram_addr_t max_ram_size; 161 162 bmc = g_new0(AspeedBoardState, 1); 163 object_initialize_child(OBJECT(machine), "soc", &bmc->soc, 164 (sizeof(bmc->soc)), cfg->soc_name, &error_abort, 165 NULL); 166 167 sc = ASPEED_SOC_GET_CLASS(&bmc->soc); 168 169 object_property_set_uint(OBJECT(&bmc->soc), ram_size, "ram-size", 170 &error_abort); 171 object_property_set_int(OBJECT(&bmc->soc), cfg->hw_strap1, "hw-strap1", 172 &error_abort); 173 object_property_set_int(OBJECT(&bmc->soc), cfg->num_cs, "num-cs", 174 &error_abort); 175 if (machine->kernel_filename) { 176 /* 177 * When booting with a -kernel command line there is no u-boot 178 * that runs to unlock the SCU. In this case set the default to 179 * be unlocked as the kernel expects 180 */ 181 object_property_set_int(OBJECT(&bmc->soc), ASPEED_SCU_PROT_KEY, 182 "hw-prot-key", &error_abort); 183 } 184 object_property_set_bool(OBJECT(&bmc->soc), true, "realized", 185 &error_abort); 186 187 /* 188 * Allocate RAM after the memory controller has checked the size 189 * was valid. If not, a default value is used. 190 */ 191 ram_size = object_property_get_uint(OBJECT(&bmc->soc), "ram-size", 192 &error_abort); 193 194 memory_region_allocate_system_memory(&bmc->ram, NULL, "ram", ram_size); 195 memory_region_add_subregion(get_system_memory(), sc->info->sdram_base, 196 &bmc->ram); 197 object_property_add_const_link(OBJECT(&bmc->soc), "ram", OBJECT(&bmc->ram), 198 &error_abort); 199 200 max_ram_size = object_property_get_uint(OBJECT(&bmc->soc), "max-ram-size", 201 &error_abort); 202 memory_region_init_io(&bmc->max_ram, NULL, &max_ram_ops, NULL, 203 "max_ram", max_ram_size - ram_size); 204 memory_region_add_subregion(get_system_memory(), 205 sc->info->sdram_base + ram_size, 206 &bmc->max_ram); 207 208 aspeed_board_init_flashes(&bmc->soc.fmc, cfg->fmc_model, &error_abort); 209 aspeed_board_init_flashes(&bmc->soc.spi[0], cfg->spi_model, &error_abort); 210 211 /* Install first FMC flash content as a boot rom. */ 212 if (drive0) { 213 AspeedSMCFlash *fl = &bmc->soc.fmc.flashes[0]; 214 MemoryRegion *boot_rom = g_new(MemoryRegion, 1); 215 216 /* 217 * create a ROM region using the default mapping window size of 218 * the flash module. The window size is 64MB for the AST2400 219 * SoC and 128MB for the AST2500 SoC, which is twice as big as 220 * needed by the flash modules of the Aspeed machines. 221 */ 222 memory_region_init_rom(boot_rom, OBJECT(bmc), "aspeed.boot_rom", 223 fl->size, &error_abort); 224 memory_region_add_subregion(get_system_memory(), FIRMWARE_ADDR, 225 boot_rom); 226 write_boot_rom(drive0, FIRMWARE_ADDR, fl->size, &error_abort); 227 } 228 229 aspeed_board_binfo.kernel_filename = machine->kernel_filename; 230 aspeed_board_binfo.initrd_filename = machine->initrd_filename; 231 aspeed_board_binfo.kernel_cmdline = machine->kernel_cmdline; 232 aspeed_board_binfo.ram_size = ram_size; 233 aspeed_board_binfo.loader_start = sc->info->sdram_base; 234 235 if (cfg->i2c_init) { 236 cfg->i2c_init(bmc); 237 } 238 239 arm_load_kernel(ARM_CPU(first_cpu), &aspeed_board_binfo); 240 } 241 242 static void palmetto_bmc_i2c_init(AspeedBoardState *bmc) 243 { 244 AspeedSoCState *soc = &bmc->soc; 245 DeviceState *dev; 246 uint8_t *eeprom_buf = g_malloc0(32 * 1024); 247 248 /* The palmetto platform expects a ds3231 RTC but a ds1338 is 249 * enough to provide basic RTC features. Alarms will be missing */ 250 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 0), "ds1338", 0x68); 251 252 smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 0), 0x50, 253 eeprom_buf); 254 255 /* add a TMP423 temperature sensor */ 256 dev = i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 2), 257 "tmp423", 0x4c); 258 object_property_set_int(OBJECT(dev), 31000, "temperature0", &error_abort); 259 object_property_set_int(OBJECT(dev), 28000, "temperature1", &error_abort); 260 object_property_set_int(OBJECT(dev), 20000, "temperature2", &error_abort); 261 object_property_set_int(OBJECT(dev), 110000, "temperature3", &error_abort); 262 } 263 264 static void ast2500_evb_i2c_init(AspeedBoardState *bmc) 265 { 266 AspeedSoCState *soc = &bmc->soc; 267 uint8_t *eeprom_buf = g_malloc0(8 * 1024); 268 269 smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 3), 0x50, 270 eeprom_buf); 271 272 /* The AST2500 EVB expects a LM75 but a TMP105 is compatible */ 273 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 7), 274 TYPE_TMP105, 0x4d); 275 276 /* The AST2500 EVB does not have an RTC. Let's pretend that one is 277 * plugged on the I2C bus header */ 278 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32); 279 } 280 281 static void romulus_bmc_i2c_init(AspeedBoardState *bmc) 282 { 283 AspeedSoCState *soc = &bmc->soc; 284 285 /* The romulus board expects Epson RX8900 I2C RTC but a ds1338 is 286 * good enough */ 287 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32); 288 } 289 290 static void witherspoon_bmc_i2c_init(AspeedBoardState *bmc) 291 { 292 AspeedSoCState *soc = &bmc->soc; 293 uint8_t *eeprom_buf = g_malloc0(8 * 1024); 294 295 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 3), TYPE_PCA9552, 296 0x60); 297 298 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 4), "tmp423", 0x4c); 299 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 5), "tmp423", 0x4c); 300 301 /* The Witherspoon expects a TMP275 but a TMP105 is compatible */ 302 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 9), TYPE_TMP105, 303 0x4a); 304 305 /* The witherspoon board expects Epson RX8900 I2C RTC but a ds1338 is 306 * good enough */ 307 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32); 308 309 smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), 0x51, 310 eeprom_buf); 311 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), TYPE_PCA9552, 312 0x60); 313 } 314 315 static void aspeed_machine_init(MachineState *machine) 316 { 317 AspeedMachineClass *amc = ASPEED_MACHINE_GET_CLASS(machine); 318 319 aspeed_board_init(machine, amc->board); 320 } 321 322 static void aspeed_machine_class_init(ObjectClass *oc, void *data) 323 { 324 MachineClass *mc = MACHINE_CLASS(oc); 325 AspeedMachineClass *amc = ASPEED_MACHINE_CLASS(oc); 326 const AspeedBoardConfig *board = data; 327 328 mc->desc = board->desc; 329 mc->init = aspeed_machine_init; 330 mc->max_cpus = 1; 331 mc->no_sdcard = 1; 332 mc->no_floppy = 1; 333 mc->no_cdrom = 1; 334 mc->no_parallel = 1; 335 if (board->ram) { 336 mc->default_ram_size = board->ram; 337 } 338 amc->board = board; 339 } 340 341 static const TypeInfo aspeed_machine_type = { 342 .name = TYPE_ASPEED_MACHINE, 343 .parent = TYPE_MACHINE, 344 .instance_size = sizeof(AspeedMachine), 345 .class_size = sizeof(AspeedMachineClass), 346 .abstract = true, 347 }; 348 349 static const AspeedBoardConfig aspeed_boards[] = { 350 { 351 .name = MACHINE_TYPE_NAME("palmetto-bmc"), 352 .desc = "OpenPOWER Palmetto BMC (ARM926EJ-S)", 353 .soc_name = "ast2400-a1", 354 .hw_strap1 = PALMETTO_BMC_HW_STRAP1, 355 .fmc_model = "n25q256a", 356 .spi_model = "mx25l25635e", 357 .num_cs = 1, 358 .i2c_init = palmetto_bmc_i2c_init, 359 .ram = 256 * MiB, 360 }, { 361 .name = MACHINE_TYPE_NAME("ast2500-evb"), 362 .desc = "Aspeed AST2500 EVB (ARM1176)", 363 .soc_name = "ast2500-a1", 364 .hw_strap1 = AST2500_EVB_HW_STRAP1, 365 .fmc_model = "w25q256", 366 .spi_model = "mx25l25635e", 367 .num_cs = 1, 368 .i2c_init = ast2500_evb_i2c_init, 369 .ram = 512 * MiB, 370 }, { 371 .name = MACHINE_TYPE_NAME("romulus-bmc"), 372 .desc = "OpenPOWER Romulus BMC (ARM1176)", 373 .soc_name = "ast2500-a1", 374 .hw_strap1 = ROMULUS_BMC_HW_STRAP1, 375 .fmc_model = "n25q256a", 376 .spi_model = "mx66l1g45g", 377 .num_cs = 2, 378 .i2c_init = romulus_bmc_i2c_init, 379 .ram = 512 * MiB, 380 }, { 381 .name = MACHINE_TYPE_NAME("witherspoon-bmc"), 382 .desc = "OpenPOWER Witherspoon BMC (ARM1176)", 383 .soc_name = "ast2500-a1", 384 .hw_strap1 = WITHERSPOON_BMC_HW_STRAP1, 385 .fmc_model = "mx25l25635e", 386 .spi_model = "mx66l1g45g", 387 .num_cs = 2, 388 .i2c_init = witherspoon_bmc_i2c_init, 389 .ram = 512 * MiB, 390 }, 391 }; 392 393 static void aspeed_machine_types(void) 394 { 395 int i; 396 397 type_register_static(&aspeed_machine_type); 398 for (i = 0; i < ARRAY_SIZE(aspeed_boards); ++i) { 399 TypeInfo ti = { 400 .name = aspeed_boards[i].name, 401 .parent = TYPE_ASPEED_MACHINE, 402 .class_init = aspeed_machine_class_init, 403 .class_data = (void *)&aspeed_boards[i], 404 }; 405 type_register(&ti); 406 } 407 } 408 409 type_init(aspeed_machine_types) 410