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 };
  49
  50 /* Palmetto hardware value: 0x120CE416 */
  51 #define PALMETTO_BMC_HW_STRAP1 (                                        \
  52         SCU_AST2400_HW_STRAP_DRAM_SIZE(DRAM_SIZE_256MB) |               \
  53         SCU_AST2400_HW_STRAP_DRAM_CONFIG(2 /* DDR3 with CL=6, CWL=5 */) | \
  54         SCU_AST2400_HW_STRAP_ACPI_DIS |                                 \
  55         SCU_AST2400_HW_STRAP_SET_CLK_SOURCE(AST2400_CLK_48M_IN) |       \
  56         SCU_HW_STRAP_VGA_CLASS_CODE |                                   \
  57         SCU_HW_STRAP_LPC_RESET_PIN |                                    \
  58         SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_M_S_EN) |                \
  59         SCU_AST2400_HW_STRAP_SET_CPU_AHB_RATIO(AST2400_CPU_AHB_RATIO_2_1) | \
  60         SCU_HW_STRAP_SPI_WIDTH |                                        \
  61         SCU_HW_STRAP_VGA_SIZE_SET(VGA_16M_DRAM) |                       \
  62         SCU_AST2400_HW_STRAP_BOOT_MODE(AST2400_SPI_BOOT))
  63
  64 /* AST2500 evb hardware value: 0xF100C2E6 */
  65 #define AST2500_EVB_HW_STRAP1 ((                                        \
  66         AST2500_HW_STRAP1_DEFAULTS |                                    \
  67         SCU_AST2500_HW_STRAP_SPI_AUTOFETCH_ENABLE |                     \
  68         SCU_AST2500_HW_STRAP_GPIO_STRAP_ENABLE |                        \
  69         SCU_AST2500_HW_STRAP_UART_DEBUG |                               \
  70         SCU_AST2500_HW_STRAP_DDR4_ENABLE |                              \
  71         SCU_HW_STRAP_MAC1_RGMII |                                       \
  72         SCU_HW_STRAP_MAC0_RGMII) &                                      \
  73         ~SCU_HW_STRAP_2ND_BOOT_WDT)
  74
  75 /* Romulus hardware value: 0xF10AD206 */
  76 #define ROMULUS_BMC_HW_STRAP1 (                                         \
  77         AST2500_HW_STRAP1_DEFAULTS |                                    \
  78         SCU_AST2500_HW_STRAP_SPI_AUTOFETCH_ENABLE |                     \
  79         SCU_AST2500_HW_STRAP_GPIO_STRAP_ENABLE |                        \
  80         SCU_AST2500_HW_STRAP_UART_DEBUG |                               \
  81         SCU_AST2500_HW_STRAP_DDR4_ENABLE |                              \
  82         SCU_AST2500_HW_STRAP_ACPI_ENABLE |                              \
  83         SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_MASTER))
  84
  85 static void palmetto_bmc_i2c_init(AspeedBoardState *bmc);
  86 static void ast2500_evb_i2c_init(AspeedBoardState *bmc);
  87
  88 static const AspeedBoardConfig aspeed_boards[] = {
  89     [PALMETTO_BMC] = {
  90         .soc_name  = "ast2400-a1",
  91         .hw_strap1 = PALMETTO_BMC_HW_STRAP1,
  92         .fmc_model = "n25q256a",
  93         .spi_model = "mx25l25635e",
  94         .num_cs    = 1,
  95         .i2c_init  = palmetto_bmc_i2c_init,
  96     },
  97     [AST2500_EVB]  = {
  98         .soc_name  = "ast2500-a1",
  99         .hw_strap1 = AST2500_EVB_HW_STRAP1,
 100         .fmc_model = "n25q256a",
 101         .spi_model = "mx25l25635e",
 102         .num_cs    = 1,
 103         .i2c_init  = ast2500_evb_i2c_init,
 104     },
 105     [ROMULUS_BMC]  = {
 106         .soc_name  = "ast2500-a1",
 107         .hw_strap1 = ROMULUS_BMC_HW_STRAP1,
 108         .fmc_model = "n25q256a",
 109         .spi_model = "mx66l1g45g",
 110         .num_cs    = 2,
 111     },
 112 };
 113
 114 #define FIRMWARE_ADDR 0x0
 115
 116 static void write_boot_rom(DriveInfo *dinfo, hwaddr addr, size_t rom_size,
 117                            Error **errp)
 118 {
 119     BlockBackend *blk = blk_by_legacy_dinfo(dinfo);
 120     uint8_t *storage;
 121     int64_t size;
 122
 123     /* The block backend size should have already been 'validated' by
 124      * the creation of the m25p80 object.
 125      */
 126     size = blk_getlength(blk);
 127     if (size <= 0) {
 128         error_setg(errp, "failed to get flash size");
 129         return;
 130     }
 131
 132     if (rom_size > size) {
 133         rom_size = size;
 134     }
 135
 136     storage = g_new0(uint8_t, rom_size);
 137     if (blk_pread(blk, 0, storage, rom_size) < 0) {
 138         error_setg(errp, "failed to read the initial flash content");
 139         return;
 140     }
 141
 142     rom_add_blob_fixed("aspeed.boot_rom", storage, rom_size, addr);
 143     g_free(storage);
 144 }
 145
 146 static void aspeed_board_init_flashes(AspeedSMCState *s, const char *flashtype,
 147                                       Error **errp)
 148 {
 149     int i ;
 150
 151     for (i = 0; i < s->num_cs; ++i) {
 152         AspeedSMCFlash *fl = &s->flashes[i];
 153         DriveInfo *dinfo = drive_get_next(IF_MTD);
 154         qemu_irq cs_line;
 155
 156         fl->flash = ssi_create_slave_no_init(s->spi, flashtype);
 157         if (dinfo) {
 158             qdev_prop_set_drive(fl->flash, "drive", blk_by_legacy_dinfo(dinfo),
 159                                 errp);
 160         }
 161         qdev_init_nofail(fl->flash);
 162
 163         cs_line = qdev_get_gpio_in_named(fl->flash, SSI_GPIO_CS, 0);
 164         sysbus_connect_irq(SYS_BUS_DEVICE(s), i + 1, cs_line);
 165     }
 166 }
 167
 168 static void aspeed_board_init(MachineState *machine,
 169                               const AspeedBoardConfig *cfg)
 170 {
 171     AspeedBoardState *bmc;
 172     AspeedSoCClass *sc;
 173     DriveInfo *drive0 = drive_get(IF_MTD, 0, 0);
 174
 175     bmc = g_new0(AspeedBoardState, 1);
 176     object_initialize(&bmc->soc, (sizeof(bmc->soc)), cfg->soc_name);
 177     object_property_add_child(OBJECT(machine), "soc", OBJECT(&bmc->soc),
 178                               &error_abort);
 179
 180     sc = ASPEED_SOC_GET_CLASS(&bmc->soc);
 181
 182     object_property_set_uint(OBJECT(&bmc->soc), ram_size, "ram-size",
 183                              &error_abort);
 184     object_property_set_int(OBJECT(&bmc->soc), cfg->hw_strap1, "hw-strap1",
 185                             &error_abort);
 186     object_property_set_int(OBJECT(&bmc->soc), cfg->num_cs, "num-cs",
 187                             &error_abort);
 188     if (machine->kernel_filename) {
 189         /*
 190          * When booting with a -kernel command line there is no u-boot
 191          * that runs to unlock the SCU. In this case set the default to
 192          * be unlocked as the kernel expects
 193          */
 194         object_property_set_int(OBJECT(&bmc->soc), ASPEED_SCU_PROT_KEY,
 195                                 "hw-prot-key", &error_abort);
 196     }
 197     object_property_set_bool(OBJECT(&bmc->soc), true, "realized",
 198                              &error_abort);
 199
 200     /*
 201      * Allocate RAM after the memory controller has checked the size
 202      * was valid. If not, a default value is used.
 203      */
 204     ram_size = object_property_get_uint(OBJECT(&bmc->soc), "ram-size",
 205                                         &error_abort);
 206
 207     memory_region_allocate_system_memory(&bmc->ram, NULL, "ram", ram_size);
 208     memory_region_add_subregion(get_system_memory(), sc->info->sdram_base,
 209                                 &bmc->ram);
 210     object_property_add_const_link(OBJECT(&bmc->soc), "ram", OBJECT(&bmc->ram),
 211                                    &error_abort);
 212
 213     aspeed_board_init_flashes(&bmc->soc.fmc, cfg->fmc_model, &error_abort);
 214     aspeed_board_init_flashes(&bmc->soc.spi[0], cfg->spi_model, &error_abort);
 215
 216     /* Install first FMC flash content as a boot rom. */
 217     if (drive0) {
 218         AspeedSMCFlash *fl = &bmc->soc.fmc.flashes[0];
 219         MemoryRegion *boot_rom = g_new(MemoryRegion, 1);
 220
 221         /*
 222          * create a ROM region using the default mapping window size of
 223          * the flash module. The window size is 64MB for the AST2400
 224          * SoC and 128MB for the AST2500 SoC, which is twice as big as
 225          * needed by the flash modules of the Aspeed machines.
 226          */
 227         memory_region_init_rom(boot_rom, OBJECT(bmc), "aspeed.boot_rom",
 228                                fl->size, &error_abort);
 229         memory_region_add_subregion(get_system_memory(), FIRMWARE_ADDR,
 230                                     boot_rom);
 231         write_boot_rom(drive0, FIRMWARE_ADDR, fl->size, &error_abort);
 232     }
 233
 234     aspeed_board_binfo.kernel_filename = machine->kernel_filename;
 235     aspeed_board_binfo.initrd_filename = machine->initrd_filename;
 236     aspeed_board_binfo.kernel_cmdline = machine->kernel_cmdline;
 237     aspeed_board_binfo.ram_size = ram_size;
 238     aspeed_board_binfo.loader_start = sc->info->sdram_base;
 239
 240     if (cfg->i2c_init) {
 241         cfg->i2c_init(bmc);
 242     }
 243
 244     arm_load_kernel(ARM_CPU(first_cpu), &aspeed_board_binfo);
 245 }
 246
 247 static void palmetto_bmc_i2c_init(AspeedBoardState *bmc)
 248 {
 249     AspeedSoCState *soc = &bmc->soc;
 250     DeviceState *dev;
 251
 252     /* The palmetto platform expects a ds3231 RTC but a ds1338 is
 253      * enough to provide basic RTC features. Alarms will be missing */
 254     i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 0), "ds1338", 0x68);
 255
 256     /* add a TMP423 temperature sensor */
 257     dev = i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 2),
 258                            "tmp423", 0x4c);
 259     object_property_set_int(OBJECT(dev), 31000, "temperature0", &error_abort);
 260     object_property_set_int(OBJECT(dev), 28000, "temperature1", &error_abort);
 261     object_property_set_int(OBJECT(dev), 20000, "temperature2", &error_abort);
 262     object_property_set_int(OBJECT(dev), 110000, "temperature3", &error_abort);
 263 }
 264
 265 static void palmetto_bmc_init(MachineState *machine)
 266 {
 267     aspeed_board_init(machine, &aspeed_boards[PALMETTO_BMC]);
 268 }
 269
 270 static void palmetto_bmc_class_init(ObjectClass *oc, void *data)
 271 {
 272     MachineClass *mc = MACHINE_CLASS(oc);
 273
 274     mc->desc = "OpenPOWER Palmetto BMC (ARM926EJ-S)";
 275     mc->init = palmetto_bmc_init;
 276     mc->max_cpus = 1;
 277     mc->no_sdcard = 1;
 278     mc->no_floppy = 1;
 279     mc->no_cdrom = 1;
 280     mc->no_parallel = 1;
 281     mc->ignore_memory_transaction_failures = true;
 282 }
 283
 284 static const TypeInfo palmetto_bmc_type = {
 285     .name = MACHINE_TYPE_NAME("palmetto-bmc"),
 286     .parent = TYPE_MACHINE,
 287     .class_init = palmetto_bmc_class_init,
 288 };
 289
 290 static void ast2500_evb_i2c_init(AspeedBoardState *bmc)
 291 {
 292     AspeedSoCState *soc = &bmc->soc;
 293
 294     /* The AST2500 EVB expects a LM75 but a TMP105 is compatible */
 295     i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 7), "tmp105", 0x4d);
 296 }
 297
 298 static void ast2500_evb_init(MachineState *machine)
 299 {
 300     aspeed_board_init(machine, &aspeed_boards[AST2500_EVB]);
 301 }
 302
 303 static void ast2500_evb_class_init(ObjectClass *oc, void *data)
 304 {
 305     MachineClass *mc = MACHINE_CLASS(oc);
 306
 307     mc->desc = "Aspeed AST2500 EVB (ARM1176)";
 308     mc->init = ast2500_evb_init;
 309     mc->max_cpus = 1;
 310     mc->no_sdcard = 1;
 311     mc->no_floppy = 1;
 312     mc->no_cdrom = 1;
 313     mc->no_parallel = 1;
 314     mc->ignore_memory_transaction_failures = true;
 315 }
 316
 317 static const TypeInfo ast2500_evb_type = {
 318     .name = MACHINE_TYPE_NAME("ast2500-evb"),
 319     .parent = TYPE_MACHINE,
 320     .class_init = ast2500_evb_class_init,
 321 };
 322
 323 static void romulus_bmc_init(MachineState *machine)
 324 {
 325     aspeed_board_init(machine, &aspeed_boards[ROMULUS_BMC]);
 326 }
 327
 328 static void romulus_bmc_class_init(ObjectClass *oc, void *data)
 329 {
 330     MachineClass *mc = MACHINE_CLASS(oc);
 331
 332     mc->desc = "OpenPOWER Romulus BMC (ARM1176)";
 333     mc->init = romulus_bmc_init;
 334     mc->max_cpus = 1;
 335     mc->no_sdcard = 1;
 336     mc->no_floppy = 1;
 337     mc->no_cdrom = 1;
 338     mc->no_parallel = 1;
 339     mc->ignore_memory_transaction_failures = true;
 340 }
 341
 342 static const TypeInfo romulus_bmc_type = {
 343     .name = MACHINE_TYPE_NAME("romulus-bmc"),
 344     .parent = TYPE_MACHINE,
 345     .class_init = romulus_bmc_class_init,
 346 };
 347
 348 static void aspeed_machine_init(void)
 349 {
 350     type_register_static(&palmetto_bmc_type);
 351     type_register_static(&ast2500_evb_type);
 352     type_register_static(&romulus_bmc_type);
 353 }
 354
 355 type_init(aspeed_machine_init)