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.h" 19 #include "hw/arm/aspeed_soc.h" 20 #include "hw/boards.h" 21 #include "hw/i2c/smbus_eeprom.h" 22 #include "qemu/log.h" 23 #include "sysemu/block-backend.h" 24 #include "hw/loader.h" 25 #include "qemu/error-report.h" 26 27 static struct arm_boot_info aspeed_board_binfo = { 28 .board_id = -1, /* device-tree-only board */ 29 .nb_cpus = 1, 30 }; 31 32 struct AspeedBoardState { 33 AspeedSoCState soc; 34 MemoryRegion ram; 35 MemoryRegion max_ram; 36 }; 37 38 /* Palmetto hardware value: 0x120CE416 */ 39 #define PALMETTO_BMC_HW_STRAP1 ( \ 40 SCU_AST2400_HW_STRAP_DRAM_SIZE(DRAM_SIZE_256MB) | \ 41 SCU_AST2400_HW_STRAP_DRAM_CONFIG(2 /* DDR3 with CL=6, CWL=5 */) | \ 42 SCU_AST2400_HW_STRAP_ACPI_DIS | \ 43 SCU_AST2400_HW_STRAP_SET_CLK_SOURCE(AST2400_CLK_48M_IN) | \ 44 SCU_HW_STRAP_VGA_CLASS_CODE | \ 45 SCU_HW_STRAP_LPC_RESET_PIN | \ 46 SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_M_S_EN) | \ 47 SCU_AST2400_HW_STRAP_SET_CPU_AHB_RATIO(AST2400_CPU_AHB_RATIO_2_1) | \ 48 SCU_HW_STRAP_SPI_WIDTH | \ 49 SCU_HW_STRAP_VGA_SIZE_SET(VGA_16M_DRAM) | \ 50 SCU_AST2400_HW_STRAP_BOOT_MODE(AST2400_SPI_BOOT)) 51 52 /* AST2500 evb hardware value: 0xF100C2E6 */ 53 #define AST2500_EVB_HW_STRAP1 (( \ 54 AST2500_HW_STRAP1_DEFAULTS | \ 55 SCU_AST2500_HW_STRAP_SPI_AUTOFETCH_ENABLE | \ 56 SCU_AST2500_HW_STRAP_GPIO_STRAP_ENABLE | \ 57 SCU_AST2500_HW_STRAP_UART_DEBUG | \ 58 SCU_AST2500_HW_STRAP_DDR4_ENABLE | \ 59 SCU_HW_STRAP_MAC1_RGMII | \ 60 SCU_HW_STRAP_MAC0_RGMII) & \ 61 ~SCU_HW_STRAP_2ND_BOOT_WDT) 62 63 /* Romulus hardware value: 0xF10AD206 */ 64 #define ROMULUS_BMC_HW_STRAP1 ( \ 65 AST2500_HW_STRAP1_DEFAULTS | \ 66 SCU_AST2500_HW_STRAP_SPI_AUTOFETCH_ENABLE | \ 67 SCU_AST2500_HW_STRAP_GPIO_STRAP_ENABLE | \ 68 SCU_AST2500_HW_STRAP_UART_DEBUG | \ 69 SCU_AST2500_HW_STRAP_DDR4_ENABLE | \ 70 SCU_AST2500_HW_STRAP_ACPI_ENABLE | \ 71 SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_MASTER)) 72 73 /* Witherspoon hardware value: 0xF10AD216 (but use romulus definition) */ 74 #define WITHERSPOON_BMC_HW_STRAP1 ROMULUS_BMC_HW_STRAP1 75 76 /* 77 * The max ram region is for firmwares that scan the address space 78 * with load/store to guess how much RAM the SoC has. 79 */ 80 static uint64_t max_ram_read(void *opaque, hwaddr offset, unsigned size) 81 { 82 return 0; 83 } 84 85 static void max_ram_write(void *opaque, hwaddr offset, uint64_t value, 86 unsigned size) 87 { 88 /* Discard writes */ 89 } 90 91 static const MemoryRegionOps max_ram_ops = { 92 .read = max_ram_read, 93 .write = max_ram_write, 94 .endianness = DEVICE_NATIVE_ENDIAN, 95 }; 96 97 #define FIRMWARE_ADDR 0x0 98 99 static void write_boot_rom(DriveInfo *dinfo, hwaddr addr, size_t rom_size, 100 Error **errp) 101 { 102 BlockBackend *blk = blk_by_legacy_dinfo(dinfo); 103 uint8_t *storage; 104 int64_t size; 105 106 /* The block backend size should have already been 'validated' by 107 * the creation of the m25p80 object. 108 */ 109 size = blk_getlength(blk); 110 if (size <= 0) { 111 error_setg(errp, "failed to get flash size"); 112 return; 113 } 114 115 if (rom_size > size) { 116 rom_size = size; 117 } 118 119 storage = g_new0(uint8_t, rom_size); 120 if (blk_pread(blk, 0, storage, rom_size) < 0) { 121 error_setg(errp, "failed to read the initial flash content"); 122 return; 123 } 124 125 rom_add_blob_fixed("aspeed.boot_rom", storage, rom_size, addr); 126 g_free(storage); 127 } 128 129 static void aspeed_board_init_flashes(AspeedSMCState *s, const char *flashtype, 130 Error **errp) 131 { 132 int i ; 133 134 for (i = 0; i < s->num_cs; ++i) { 135 AspeedSMCFlash *fl = &s->flashes[i]; 136 DriveInfo *dinfo = drive_get_next(IF_MTD); 137 qemu_irq cs_line; 138 139 fl->flash = ssi_create_slave_no_init(s->spi, flashtype); 140 if (dinfo) { 141 qdev_prop_set_drive(fl->flash, "drive", blk_by_legacy_dinfo(dinfo), 142 errp); 143 } 144 qdev_init_nofail(fl->flash); 145 146 cs_line = qdev_get_gpio_in_named(fl->flash, SSI_GPIO_CS, 0); 147 sysbus_connect_irq(SYS_BUS_DEVICE(s), i + 1, cs_line); 148 } 149 } 150 151 static void aspeed_board_init(MachineState *machine, 152 const AspeedBoardConfig *cfg) 153 { 154 AspeedBoardState *bmc; 155 AspeedSoCClass *sc; 156 DriveInfo *drive0 = drive_get(IF_MTD, 0, 0); 157 ram_addr_t max_ram_size; 158 159 bmc = g_new0(AspeedBoardState, 1); 160 object_initialize(&bmc->soc, (sizeof(bmc->soc)), cfg->soc_name); 161 object_property_add_child(OBJECT(machine), "soc", OBJECT(&bmc->soc), 162 &error_abort); 163 164 sc = ASPEED_SOC_GET_CLASS(&bmc->soc); 165 166 object_property_set_uint(OBJECT(&bmc->soc), ram_size, "ram-size", 167 &error_abort); 168 object_property_set_int(OBJECT(&bmc->soc), cfg->hw_strap1, "hw-strap1", 169 &error_abort); 170 object_property_set_int(OBJECT(&bmc->soc), cfg->num_cs, "num-cs", 171 &error_abort); 172 if (machine->kernel_filename) { 173 /* 174 * When booting with a -kernel command line there is no u-boot 175 * that runs to unlock the SCU. In this case set the default to 176 * be unlocked as the kernel expects 177 */ 178 object_property_set_int(OBJECT(&bmc->soc), ASPEED_SCU_PROT_KEY, 179 "hw-prot-key", &error_abort); 180 } 181 object_property_set_bool(OBJECT(&bmc->soc), true, "realized", 182 &error_abort); 183 184 /* 185 * Allocate RAM after the memory controller has checked the size 186 * was valid. If not, a default value is used. 187 */ 188 ram_size = object_property_get_uint(OBJECT(&bmc->soc), "ram-size", 189 &error_abort); 190 191 memory_region_allocate_system_memory(&bmc->ram, NULL, "ram", ram_size); 192 memory_region_add_subregion(get_system_memory(), sc->info->sdram_base, 193 &bmc->ram); 194 object_property_add_const_link(OBJECT(&bmc->soc), "ram", OBJECT(&bmc->ram), 195 &error_abort); 196 197 max_ram_size = object_property_get_uint(OBJECT(&bmc->soc), "max-ram-size", 198 &error_abort); 199 memory_region_init_io(&bmc->max_ram, NULL, &max_ram_ops, NULL, 200 "max_ram", max_ram_size - ram_size); 201 memory_region_add_subregion(get_system_memory(), 202 sc->info->sdram_base + ram_size, 203 &bmc->max_ram); 204 205 aspeed_board_init_flashes(&bmc->soc.fmc, cfg->fmc_model, &error_abort); 206 aspeed_board_init_flashes(&bmc->soc.spi[0], cfg->spi_model, &error_abort); 207 208 /* Install first FMC flash content as a boot rom. */ 209 if (drive0) { 210 AspeedSMCFlash *fl = &bmc->soc.fmc.flashes[0]; 211 MemoryRegion *boot_rom = g_new(MemoryRegion, 1); 212 213 /* 214 * create a ROM region using the default mapping window size of 215 * the flash module. The window size is 64MB for the AST2400 216 * SoC and 128MB for the AST2500 SoC, which is twice as big as 217 * needed by the flash modules of the Aspeed machines. 218 */ 219 memory_region_init_rom(boot_rom, OBJECT(bmc), "aspeed.boot_rom", 220 fl->size, &error_abort); 221 memory_region_add_subregion(get_system_memory(), FIRMWARE_ADDR, 222 boot_rom); 223 write_boot_rom(drive0, FIRMWARE_ADDR, fl->size, &error_abort); 224 } 225 226 aspeed_board_binfo.kernel_filename = machine->kernel_filename; 227 aspeed_board_binfo.initrd_filename = machine->initrd_filename; 228 aspeed_board_binfo.kernel_cmdline = machine->kernel_cmdline; 229 aspeed_board_binfo.ram_size = ram_size; 230 aspeed_board_binfo.loader_start = sc->info->sdram_base; 231 232 if (cfg->i2c_init) { 233 cfg->i2c_init(bmc); 234 } 235 236 arm_load_kernel(ARM_CPU(first_cpu), &aspeed_board_binfo); 237 } 238 239 static void palmetto_bmc_i2c_init(AspeedBoardState *bmc) 240 { 241 AspeedSoCState *soc = &bmc->soc; 242 DeviceState *dev; 243 uint8_t *eeprom_buf = g_malloc0(32 * 1024); 244 245 /* The palmetto platform expects a ds3231 RTC but a ds1338 is 246 * enough to provide basic RTC features. Alarms will be missing */ 247 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 0), "ds1338", 0x68); 248 249 smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 0), 0x50, 250 eeprom_buf); 251 252 /* add a TMP423 temperature sensor */ 253 dev = i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 2), 254 "tmp423", 0x4c); 255 object_property_set_int(OBJECT(dev), 31000, "temperature0", &error_abort); 256 object_property_set_int(OBJECT(dev), 28000, "temperature1", &error_abort); 257 object_property_set_int(OBJECT(dev), 20000, "temperature2", &error_abort); 258 object_property_set_int(OBJECT(dev), 110000, "temperature3", &error_abort); 259 } 260 261 static void ast2500_evb_i2c_init(AspeedBoardState *bmc) 262 { 263 AspeedSoCState *soc = &bmc->soc; 264 uint8_t *eeprom_buf = g_malloc0(8 * 1024); 265 266 smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 3), 0x50, 267 eeprom_buf); 268 269 /* The AST2500 EVB expects a LM75 but a TMP105 is compatible */ 270 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 7), "tmp105", 0x4d); 271 272 /* The AST2500 EVB does not have an RTC. Let's pretend that one is 273 * plugged on the I2C bus header */ 274 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32); 275 } 276 277 static void romulus_bmc_i2c_init(AspeedBoardState *bmc) 278 { 279 AspeedSoCState *soc = &bmc->soc; 280 281 /* The romulus board expects Epson RX8900 I2C RTC but a ds1338 is 282 * good enough */ 283 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32); 284 } 285 286 static void witherspoon_bmc_i2c_init(AspeedBoardState *bmc) 287 { 288 AspeedSoCState *soc = &bmc->soc; 289 uint8_t *eeprom_buf = g_malloc0(8 * 1024); 290 291 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 3), "pca9552", 0x60); 292 293 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 4), "tmp423", 0x4c); 294 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 5), "tmp423", 0x4c); 295 296 /* The Witherspoon expects a TMP275 but a TMP105 is compatible */ 297 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 9), "tmp105", 0x4a); 298 299 /* The witherspoon board expects Epson RX8900 I2C RTC but a ds1338 is 300 * good enough */ 301 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32); 302 303 smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), 0x51, 304 eeprom_buf); 305 i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "pca9552", 306 0x60); 307 } 308 309 static void aspeed_machine_init(MachineState *machine) 310 { 311 AspeedMachineClass *amc = ASPEED_MACHINE_GET_CLASS(machine); 312 313 aspeed_board_init(machine, amc->board); 314 } 315 316 static void aspeed_machine_class_init(ObjectClass *oc, void *data) 317 { 318 MachineClass *mc = MACHINE_CLASS(oc); 319 AspeedMachineClass *amc = ASPEED_MACHINE_CLASS(oc); 320 const AspeedBoardConfig *board = data; 321 322 mc->desc = board->desc; 323 mc->init = aspeed_machine_init; 324 mc->max_cpus = 1; 325 mc->no_sdcard = 1; 326 mc->no_floppy = 1; 327 mc->no_cdrom = 1; 328 mc->no_parallel = 1; 329 amc->board = board; 330 } 331 332 static const TypeInfo aspeed_machine_type = { 333 .name = TYPE_ASPEED_MACHINE, 334 .parent = TYPE_MACHINE, 335 .instance_size = sizeof(AspeedMachine), 336 .class_size = sizeof(AspeedMachineClass), 337 .abstract = true, 338 }; 339 340 static const AspeedBoardConfig aspeed_boards[] = { 341 { 342 .name = MACHINE_TYPE_NAME("palmetto-bmc"), 343 .desc = "OpenPOWER Palmetto BMC (ARM926EJ-S)", 344 .soc_name = "ast2400-a1", 345 .hw_strap1 = PALMETTO_BMC_HW_STRAP1, 346 .fmc_model = "n25q256a", 347 .spi_model = "mx25l25635e", 348 .num_cs = 1, 349 .i2c_init = palmetto_bmc_i2c_init, 350 }, { 351 .name = MACHINE_TYPE_NAME("ast2500-evb"), 352 .desc = "Aspeed AST2500 EVB (ARM1176)", 353 .soc_name = "ast2500-a1", 354 .hw_strap1 = AST2500_EVB_HW_STRAP1, 355 .fmc_model = "w25q256", 356 .spi_model = "mx25l25635e", 357 .num_cs = 1, 358 .i2c_init = ast2500_evb_i2c_init, 359 }, { 360 .name = MACHINE_TYPE_NAME("romulus-bmc"), 361 .desc = "OpenPOWER Romulus BMC (ARM1176)", 362 .soc_name = "ast2500-a1", 363 .hw_strap1 = ROMULUS_BMC_HW_STRAP1, 364 .fmc_model = "n25q256a", 365 .spi_model = "mx66l1g45g", 366 .num_cs = 2, 367 .i2c_init = romulus_bmc_i2c_init, 368 }, { 369 .name = MACHINE_TYPE_NAME("witherspoon-bmc"), 370 .desc = "OpenPOWER Witherspoon BMC (ARM1176)", 371 .soc_name = "ast2500-a1", 372 .hw_strap1 = WITHERSPOON_BMC_HW_STRAP1, 373 .fmc_model = "mx25l25635e", 374 .spi_model = "mx66l1g45g", 375 .num_cs = 2, 376 .i2c_init = witherspoon_bmc_i2c_init, 377 }, 378 }; 379 380 static void aspeed_machine_types(void) 381 { 382 int i; 383 384 type_register_static(&aspeed_machine_type); 385 for (i = 0; i < ARRAY_SIZE(aspeed_boards); ++i) { 386 TypeInfo ti = { 387 .name = aspeed_boards[i].name, 388 .parent = TYPE_ASPEED_MACHINE, 389 .class_init = aspeed_machine_class_init, 390 .class_data = (void *)&aspeed_boards[i], 391 }; 392 type_register(&ti); 393 } 394 } 395 396 type_init(aspeed_machine_types) 397