/* * OpenPOWER Palmetto BMC * * Andrew Jeffery * * Copyright 2016 IBM Corp. * * This code is licensed under the GPL version 2 or later. See * the COPYING file in the top-level directory. */ #include "qemu/osdep.h" #include "qapi/error.h" #include "qemu-common.h" #include "cpu.h" #include "exec/address-spaces.h" #include "hw/arm/boot.h" #include "hw/arm/aspeed.h" #include "hw/arm/aspeed_soc.h" #include "hw/boards.h" #include "hw/i2c/smbus_eeprom.h" #include "hw/misc/pca9552.h" #include "hw/misc/tmp105.h" #include "qemu/log.h" #include "sysemu/block-backend.h" #include "hw/loader.h" #include "qemu/error-report.h" #include "qemu/units.h" static struct arm_boot_info aspeed_board_binfo = { .board_id = -1, /* device-tree-only board */ .nb_cpus = 1, }; struct AspeedBoardState { AspeedSoCState soc; MemoryRegion ram; MemoryRegion max_ram; }; /* Palmetto hardware value: 0x120CE416 */ #define PALMETTO_BMC_HW_STRAP1 ( \ SCU_AST2400_HW_STRAP_DRAM_SIZE(DRAM_SIZE_256MB) | \ SCU_AST2400_HW_STRAP_DRAM_CONFIG(2 /* DDR3 with CL=6, CWL=5 */) | \ SCU_AST2400_HW_STRAP_ACPI_DIS | \ SCU_AST2400_HW_STRAP_SET_CLK_SOURCE(AST2400_CLK_48M_IN) | \ SCU_HW_STRAP_VGA_CLASS_CODE | \ SCU_HW_STRAP_LPC_RESET_PIN | \ SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_M_S_EN) | \ SCU_AST2400_HW_STRAP_SET_CPU_AHB_RATIO(AST2400_CPU_AHB_RATIO_2_1) | \ SCU_HW_STRAP_SPI_WIDTH | \ SCU_HW_STRAP_VGA_SIZE_SET(VGA_16M_DRAM) | \ SCU_AST2400_HW_STRAP_BOOT_MODE(AST2400_SPI_BOOT)) /* AST2500 evb hardware value: 0xF100C2E6 */ #define AST2500_EVB_HW_STRAP1 (( \ AST2500_HW_STRAP1_DEFAULTS | \ SCU_AST2500_HW_STRAP_SPI_AUTOFETCH_ENABLE | \ SCU_AST2500_HW_STRAP_GPIO_STRAP_ENABLE | \ SCU_AST2500_HW_STRAP_UART_DEBUG | \ SCU_AST2500_HW_STRAP_DDR4_ENABLE | \ SCU_HW_STRAP_MAC1_RGMII | \ SCU_HW_STRAP_MAC0_RGMII) & \ ~SCU_HW_STRAP_2ND_BOOT_WDT) /* Romulus hardware value: 0xF10AD206 */ #define ROMULUS_BMC_HW_STRAP1 ( \ AST2500_HW_STRAP1_DEFAULTS | \ SCU_AST2500_HW_STRAP_SPI_AUTOFETCH_ENABLE | \ SCU_AST2500_HW_STRAP_GPIO_STRAP_ENABLE | \ SCU_AST2500_HW_STRAP_UART_DEBUG | \ SCU_AST2500_HW_STRAP_DDR4_ENABLE | \ SCU_AST2500_HW_STRAP_ACPI_ENABLE | \ SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_MASTER)) /* Witherspoon hardware value: 0xF10AD216 (but use romulus definition) */ #define WITHERSPOON_BMC_HW_STRAP1 ROMULUS_BMC_HW_STRAP1 /* * The max ram region is for firmwares that scan the address space * with load/store to guess how much RAM the SoC has. */ static uint64_t max_ram_read(void *opaque, hwaddr offset, unsigned size) { return 0; } static void max_ram_write(void *opaque, hwaddr offset, uint64_t value, unsigned size) { /* Discard writes */ } static const MemoryRegionOps max_ram_ops = { .read = max_ram_read, .write = max_ram_write, .endianness = DEVICE_NATIVE_ENDIAN, }; #define FIRMWARE_ADDR 0x0 static void write_boot_rom(DriveInfo *dinfo, hwaddr addr, size_t rom_size, Error **errp) { BlockBackend *blk = blk_by_legacy_dinfo(dinfo); uint8_t *storage; int64_t size; /* The block backend size should have already been 'validated' by * the creation of the m25p80 object. */ size = blk_getlength(blk); if (size <= 0) { error_setg(errp, "failed to get flash size"); return; } if (rom_size > size) { rom_size = size; } storage = g_new0(uint8_t, rom_size); if (blk_pread(blk, 0, storage, rom_size) < 0) { error_setg(errp, "failed to read the initial flash content"); return; } rom_add_blob_fixed("aspeed.boot_rom", storage, rom_size, addr); g_free(storage); } static void aspeed_board_init_flashes(AspeedSMCState *s, const char *flashtype, Error **errp) { int i ; for (i = 0; i < s->num_cs; ++i) { AspeedSMCFlash *fl = &s->flashes[i]; DriveInfo *dinfo = drive_get_next(IF_MTD); qemu_irq cs_line; fl->flash = ssi_create_slave_no_init(s->spi, flashtype); if (dinfo) { qdev_prop_set_drive(fl->flash, "drive", blk_by_legacy_dinfo(dinfo), errp); } qdev_init_nofail(fl->flash); cs_line = qdev_get_gpio_in_named(fl->flash, SSI_GPIO_CS, 0); sysbus_connect_irq(SYS_BUS_DEVICE(s), i + 1, cs_line); } } static void aspeed_board_init(MachineState *machine, const AspeedBoardConfig *cfg) { AspeedBoardState *bmc; AspeedSoCClass *sc; DriveInfo *drive0 = drive_get(IF_MTD, 0, 0); ram_addr_t max_ram_size; bmc = g_new0(AspeedBoardState, 1); object_initialize(&bmc->soc, (sizeof(bmc->soc)), cfg->soc_name); object_property_add_child(OBJECT(machine), "soc", OBJECT(&bmc->soc), &error_abort); sc = ASPEED_SOC_GET_CLASS(&bmc->soc); object_property_set_uint(OBJECT(&bmc->soc), ram_size, "ram-size", &error_abort); object_property_set_int(OBJECT(&bmc->soc), cfg->hw_strap1, "hw-strap1", &error_abort); object_property_set_int(OBJECT(&bmc->soc), cfg->num_cs, "num-cs", &error_abort); if (machine->kernel_filename) { /* * When booting with a -kernel command line there is no u-boot * that runs to unlock the SCU. In this case set the default to * be unlocked as the kernel expects */ object_property_set_int(OBJECT(&bmc->soc), ASPEED_SCU_PROT_KEY, "hw-prot-key", &error_abort); } object_property_set_bool(OBJECT(&bmc->soc), true, "realized", &error_abort); /* * Allocate RAM after the memory controller has checked the size * was valid. If not, a default value is used. */ ram_size = object_property_get_uint(OBJECT(&bmc->soc), "ram-size", &error_abort); memory_region_allocate_system_memory(&bmc->ram, NULL, "ram", ram_size); memory_region_add_subregion(get_system_memory(), sc->info->sdram_base, &bmc->ram); object_property_add_const_link(OBJECT(&bmc->soc), "ram", OBJECT(&bmc->ram), &error_abort); max_ram_size = object_property_get_uint(OBJECT(&bmc->soc), "max-ram-size", &error_abort); memory_region_init_io(&bmc->max_ram, NULL, &max_ram_ops, NULL, "max_ram", max_ram_size - ram_size); memory_region_add_subregion(get_system_memory(), sc->info->sdram_base + ram_size, &bmc->max_ram); aspeed_board_init_flashes(&bmc->soc.fmc, cfg->fmc_model, &error_abort); aspeed_board_init_flashes(&bmc->soc.spi[0], cfg->spi_model, &error_abort); /* Install first FMC flash content as a boot rom. */ if (drive0) { AspeedSMCFlash *fl = &bmc->soc.fmc.flashes[0]; MemoryRegion *boot_rom = g_new(MemoryRegion, 1); /* * create a ROM region using the default mapping window size of * the flash module. The window size is 64MB for the AST2400 * SoC and 128MB for the AST2500 SoC, which is twice as big as * needed by the flash modules of the Aspeed machines. */ memory_region_init_rom(boot_rom, OBJECT(bmc), "aspeed.boot_rom", fl->size, &error_abort); memory_region_add_subregion(get_system_memory(), FIRMWARE_ADDR, boot_rom); write_boot_rom(drive0, FIRMWARE_ADDR, fl->size, &error_abort); } aspeed_board_binfo.kernel_filename = machine->kernel_filename; aspeed_board_binfo.initrd_filename = machine->initrd_filename; aspeed_board_binfo.kernel_cmdline = machine->kernel_cmdline; aspeed_board_binfo.ram_size = ram_size; aspeed_board_binfo.loader_start = sc->info->sdram_base; if (cfg->i2c_init) { cfg->i2c_init(bmc); } arm_load_kernel(ARM_CPU(first_cpu), &aspeed_board_binfo); } static void palmetto_bmc_i2c_init(AspeedBoardState *bmc) { AspeedSoCState *soc = &bmc->soc; DeviceState *dev; uint8_t *eeprom_buf = g_malloc0(32 * 1024); /* The palmetto platform expects a ds3231 RTC but a ds1338 is * enough to provide basic RTC features. Alarms will be missing */ i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 0), "ds1338", 0x68); smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 0), 0x50, eeprom_buf); /* add a TMP423 temperature sensor */ dev = i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 2), "tmp423", 0x4c); object_property_set_int(OBJECT(dev), 31000, "temperature0", &error_abort); object_property_set_int(OBJECT(dev), 28000, "temperature1", &error_abort); object_property_set_int(OBJECT(dev), 20000, "temperature2", &error_abort); object_property_set_int(OBJECT(dev), 110000, "temperature3", &error_abort); } static void ast2500_evb_i2c_init(AspeedBoardState *bmc) { AspeedSoCState *soc = &bmc->soc; uint8_t *eeprom_buf = g_malloc0(8 * 1024); smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 3), 0x50, eeprom_buf); /* The AST2500 EVB expects a LM75 but a TMP105 is compatible */ i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 7), TYPE_TMP105, 0x4d); /* The AST2500 EVB does not have an RTC. Let's pretend that one is * plugged on the I2C bus header */ i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32); } static void romulus_bmc_i2c_init(AspeedBoardState *bmc) { AspeedSoCState *soc = &bmc->soc; /* The romulus board expects Epson RX8900 I2C RTC but a ds1338 is * good enough */ i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32); } static void witherspoon_bmc_i2c_init(AspeedBoardState *bmc) { AspeedSoCState *soc = &bmc->soc; uint8_t *eeprom_buf = g_malloc0(8 * 1024); i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 3), TYPE_PCA9552, 0x60); i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 4), "tmp423", 0x4c); i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 5), "tmp423", 0x4c); /* The Witherspoon expects a TMP275 but a TMP105 is compatible */ i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 9), TYPE_TMP105, 0x4a); /* The witherspoon board expects Epson RX8900 I2C RTC but a ds1338 is * good enough */ i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32); smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), 0x51, eeprom_buf); i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), TYPE_PCA9552, 0x60); } static void aspeed_machine_init(MachineState *machine) { AspeedMachineClass *amc = ASPEED_MACHINE_GET_CLASS(machine); aspeed_board_init(machine, amc->board); } static void aspeed_machine_class_init(ObjectClass *oc, void *data) { MachineClass *mc = MACHINE_CLASS(oc); AspeedMachineClass *amc = ASPEED_MACHINE_CLASS(oc); const AspeedBoardConfig *board = data; mc->desc = board->desc; mc->init = aspeed_machine_init; mc->max_cpus = 1; mc->no_sdcard = 1; mc->no_floppy = 1; mc->no_cdrom = 1; mc->no_parallel = 1; if (board->ram) { mc->default_ram_size = board->ram; } amc->board = board; } static const TypeInfo aspeed_machine_type = { .name = TYPE_ASPEED_MACHINE, .parent = TYPE_MACHINE, .instance_size = sizeof(AspeedMachine), .class_size = sizeof(AspeedMachineClass), .abstract = true, }; static const AspeedBoardConfig aspeed_boards[] = { { .name = MACHINE_TYPE_NAME("palmetto-bmc"), .desc = "OpenPOWER Palmetto BMC (ARM926EJ-S)", .soc_name = "ast2400-a1", .hw_strap1 = PALMETTO_BMC_HW_STRAP1, .fmc_model = "n25q256a", .spi_model = "mx25l25635e", .num_cs = 1, .i2c_init = palmetto_bmc_i2c_init, .ram = 256 * MiB, }, { .name = MACHINE_TYPE_NAME("ast2500-evb"), .desc = "Aspeed AST2500 EVB (ARM1176)", .soc_name = "ast2500-a1", .hw_strap1 = AST2500_EVB_HW_STRAP1, .fmc_model = "w25q256", .spi_model = "mx25l25635e", .num_cs = 1, .i2c_init = ast2500_evb_i2c_init, .ram = 512 * MiB, }, { .name = MACHINE_TYPE_NAME("romulus-bmc"), .desc = "OpenPOWER Romulus BMC (ARM1176)", .soc_name = "ast2500-a1", .hw_strap1 = ROMULUS_BMC_HW_STRAP1, .fmc_model = "n25q256a", .spi_model = "mx66l1g45g", .num_cs = 2, .i2c_init = romulus_bmc_i2c_init, .ram = 512 * MiB, }, { .name = MACHINE_TYPE_NAME("witherspoon-bmc"), .desc = "OpenPOWER Witherspoon BMC (ARM1176)", .soc_name = "ast2500-a1", .hw_strap1 = WITHERSPOON_BMC_HW_STRAP1, .fmc_model = "mx25l25635e", .spi_model = "mx66l1g45g", .num_cs = 2, .i2c_init = witherspoon_bmc_i2c_init, .ram = 512 * MiB, }, }; static void aspeed_machine_types(void) { int i; type_register_static(&aspeed_machine_type); for (i = 0; i < ARRAY_SIZE(aspeed_boards); ++i) { TypeInfo ti = { .name = aspeed_boards[i].name, .parent = TYPE_ASPEED_MACHINE, .class_init = aspeed_machine_class_init, .class_data = (void *)&aspeed_boards[i], }; type_register(&ti); } } type_init(aspeed_machine_types)