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 "sysemu/blockdev.h"
  23 #include "hw/loader.h"
  24 #include "qemu/error-report.h"
  25
  26 static struct arm_boot_info aspeed_board_binfo = {
  27     .board_id = -1, /* device-tree-only board */
  28     .nb_cpus = 1,
  29 };
  30
  31 typedef struct AspeedBoardState {
  32     AspeedSoCState soc;
  33     MemoryRegion ram;
  34 } AspeedBoardState;
  35
  36 typedef struct AspeedBoardConfig {
  37     const char *soc_name;
  38     uint32_t hw_strap1;
  39     const char *fmc_model;
  40     const char *spi_model;
  41     uint32_t num_cs;
  42     void (*i2c_init)(AspeedBoardState *bmc);
  43 } AspeedBoardConfig;
  44
  45 enum {
  46     PALMETTO_BMC,
  47     AST2500_EVB,
  48     ROMULUS_BMC,
  49 };
  50
  51 /* Palmetto hardware value: 0x120CE416 */
  52 #define PALMETTO_BMC_HW_STRAP1 (                                        \
  53         SCU_AST2400_HW_STRAP_DRAM_SIZE(DRAM_SIZE_256MB) |               \
  54         SCU_AST2400_HW_STRAP_DRAM_CONFIG(2 /* DDR3 with CL=6, CWL=5 */) | \
  55         SCU_AST2400_HW_STRAP_ACPI_DIS |                                 \
  56         SCU_AST2400_HW_STRAP_SET_CLK_SOURCE(AST2400_CLK_48M_IN) |       \
  57         SCU_HW_STRAP_VGA_CLASS_CODE |                                   \
  58         SCU_HW_STRAP_LPC_RESET_PIN |                                    \
  59         SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_M_S_EN) |                \
  60         SCU_AST2400_HW_STRAP_SET_CPU_AHB_RATIO(AST2400_CPU_AHB_RATIO_2_1) | \
  61         SCU_HW_STRAP_SPI_WIDTH |                                        \
  62         SCU_HW_STRAP_VGA_SIZE_SET(VGA_16M_DRAM) |                       \
  63         SCU_AST2400_HW_STRAP_BOOT_MODE(AST2400_SPI_BOOT))
  64
  65 /* AST2500 evb hardware value: 0xF100C2E6 */
  66 #define AST2500_EVB_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_HW_STRAP_MAC1_RGMII |                                       \
  73         SCU_HW_STRAP_MAC0_RGMII) &                                      \
  74         ~SCU_HW_STRAP_2ND_BOOT_WDT)
  75
  76 /* Romulus hardware value: 0xF10AD206 */
  77 #define ROMULUS_BMC_HW_STRAP1 (                                         \
  78         AST2500_HW_STRAP1_DEFAULTS |                                    \
  79         SCU_AST2500_HW_STRAP_SPI_AUTOFETCH_ENABLE |                     \
  80         SCU_AST2500_HW_STRAP_GPIO_STRAP_ENABLE |                        \
  81         SCU_AST2500_HW_STRAP_UART_DEBUG |                               \
  82         SCU_AST2500_HW_STRAP_DDR4_ENABLE |                              \
  83         SCU_AST2500_HW_STRAP_ACPI_ENABLE |                              \
  84         SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_MASTER))
  85
  86 static void palmetto_bmc_i2c_init(AspeedBoardState *bmc);
  87 static void ast2500_evb_i2c_init(AspeedBoardState *bmc);
  88
  89 static const AspeedBoardConfig aspeed_boards[] = {
  90     [PALMETTO_BMC] = {
  91         .soc_name  = "ast2400-a1",
  92         .hw_strap1 = PALMETTO_BMC_HW_STRAP1,
  93         .fmc_model = "n25q256a",
  94         .spi_model = "mx25l25635e",
  95         .num_cs    = 1,
  96         .i2c_init  = palmetto_bmc_i2c_init,
  97     },
  98     [AST2500_EVB]  = {
  99         .soc_name  = "ast2500-a1",
 100         .hw_strap1 = AST2500_EVB_HW_STRAP1,
 101         .fmc_model = "n25q256a",
 102         .spi_model = "mx25l25635e",
 103         .num_cs    = 1,
 104         .i2c_init  = ast2500_evb_i2c_init,
 105     },
 106     [ROMULUS_BMC]  = {
 107         .soc_name  = "ast2500-a1",
 108         .hw_strap1 = ROMULUS_BMC_HW_STRAP1,
 109         .fmc_model = "n25q256a",
 110         .spi_model = "mx66l1g45g",
 111         .num_cs    = 2,
 112     },
 113 };
 114
 115 #define FIRMWARE_ADDR 0x0
 116
 117 static void write_boot_rom(DriveInfo *dinfo, hwaddr addr, size_t rom_size,
 118                            Error **errp)
 119 {
 120     BlockBackend *blk = blk_by_legacy_dinfo(dinfo);
 121     uint8_t *storage;
 122     int64_t size;
 123
 124     /* The block backend size should have already been 'validated' by
 125      * the creation of the m25p80 object.
 126      */
 127     size = blk_getlength(blk);
 128     if (size <= 0) {
 129         error_setg(errp, "failed to get flash size");
 130         return;
 131     }
 132
 133     if (rom_size > size) {
 134         rom_size = size;
 135     }
 136
 137     storage = g_new0(uint8_t, rom_size);
 138     if (blk_pread(blk, 0, storage, rom_size) < 0) {
 139         error_setg(errp, "failed to read the initial flash content");
 140         return;
 141     }
 142
 143     rom_add_blob_fixed("aspeed.boot_rom", storage, rom_size, addr);
 144     g_free(storage);
 145 }
 146
 147 static void aspeed_board_init_flashes(AspeedSMCState *s, const char *flashtype,
 148                                       Error **errp)
 149 {
 150     int i ;
 151
 152     for (i = 0; i < s->num_cs; ++i) {
 153         AspeedSMCFlash *fl = &s->flashes[i];
 154         DriveInfo *dinfo = drive_get_next(IF_MTD);
 155         qemu_irq cs_line;
 156
 157         fl->flash = ssi_create_slave_no_init(s->spi, flashtype);
 158         if (dinfo) {
 159             qdev_prop_set_drive(fl->flash, "drive", blk_by_legacy_dinfo(dinfo),
 160                                 errp);
 161         }
 162         qdev_init_nofail(fl->flash);
 163
 164         cs_line = qdev_get_gpio_in_named(fl->flash, SSI_GPIO_CS, 0);
 165         sysbus_connect_irq(SYS_BUS_DEVICE(s), i + 1, cs_line);
 166     }
 167 }
 168
 169 static void aspeed_board_init(MachineState *machine,
 170                               const AspeedBoardConfig *cfg)
 171 {
 172     AspeedBoardState *bmc;
 173     AspeedSoCClass *sc;
 174     DriveInfo *drive0 = drive_get(IF_MTD, 0, 0);
 175
 176     bmc = g_new0(AspeedBoardState, 1);
 177     object_initialize(&bmc->soc, (sizeof(bmc->soc)), cfg->soc_name);
 178     object_property_add_child(OBJECT(machine), "soc", OBJECT(&bmc->soc),
 179                               &error_abort);
 180
 181     sc = ASPEED_SOC_GET_CLASS(&bmc->soc);
 182
 183     object_property_set_uint(OBJECT(&bmc->soc), ram_size, "ram-size",
 184                              &error_abort);
 185     object_property_set_int(OBJECT(&bmc->soc), cfg->hw_strap1, "hw-strap1",
 186                             &error_abort);
 187     object_property_set_int(OBJECT(&bmc->soc), cfg->num_cs, "num-cs",
 188                             &error_abort);
 189     if (machine->kernel_filename) {
 190         /*
 191          * When booting with a -kernel command line there is no u-boot
 192          * that runs to unlock the SCU. In this case set the default to
 193          * be unlocked as the kernel expects
 194          */
 195         object_property_set_int(OBJECT(&bmc->soc), ASPEED_SCU_PROT_KEY,
 196                                 "hw-prot-key", &error_abort);
 197     }
 198     object_property_set_bool(OBJECT(&bmc->soc), true, "realized",
 199                              &error_abort);
 200
 201     /*
 202      * Allocate RAM after the memory controller has checked the size
 203      * was valid. If not, a default value is used.
 204      */
 205     ram_size = object_property_get_uint(OBJECT(&bmc->soc), "ram-size",
 206                                         &error_abort);
 207
 208     memory_region_allocate_system_memory(&bmc->ram, NULL, "ram", ram_size);
 209     memory_region_add_subregion(get_system_memory(), sc->info->sdram_base,
 210                                 &bmc->ram);
 211     object_property_add_const_link(OBJECT(&bmc->soc), "ram", OBJECT(&bmc->ram),
 212                                    &error_abort);
 213
 214     aspeed_board_init_flashes(&bmc->soc.fmc, cfg->fmc_model, &error_abort);
 215     aspeed_board_init_flashes(&bmc->soc.spi[0], cfg->spi_model, &error_abort);
 216
 217     /* Install first FMC flash content as a boot rom. */
 218     if (drive0) {
 219         AspeedSMCFlash *fl = &bmc->soc.fmc.flashes[0];
 220         MemoryRegion *boot_rom = g_new(MemoryRegion, 1);
 221
 222         /*
 223          * create a ROM region using the default mapping window size of
 224          * the flash module. The window size is 64MB for the AST2400
 225          * SoC and 128MB for the AST2500 SoC, which is twice as big as
 226          * needed by the flash modules of the Aspeed machines.
 227          */
 228         memory_region_init_rom_nomigrate(boot_rom, OBJECT(bmc), "aspeed.boot_rom",
 229                                fl->size, &error_abort);
 230         memory_region_add_subregion(get_system_memory(), FIRMWARE_ADDR,
 231                                     boot_rom);
 232         write_boot_rom(drive0, FIRMWARE_ADDR, fl->size, &error_abort);
 233     }
 234
 235     aspeed_board_binfo.kernel_filename = machine->kernel_filename;
 236     aspeed_board_binfo.initrd_filename = machine->initrd_filename;
 237     aspeed_board_binfo.kernel_cmdline = machine->kernel_cmdline;
 238     aspeed_board_binfo.ram_size = ram_size;
 239     aspeed_board_binfo.loader_start = sc->info->sdram_base;
 240
 241     if (cfg->i2c_init) {
 242         cfg->i2c_init(bmc);
 243     }
 244
 245     arm_load_kernel(ARM_CPU(first_cpu), &aspeed_board_binfo);
 246 }
 247
 248 static void palmetto_bmc_i2c_init(AspeedBoardState *bmc)
 249 {
 250     AspeedSoCState *soc = &bmc->soc;
 251     DeviceState *dev;
 252
 253     /* The palmetto platform expects a ds3231 RTC but a ds1338 is
 254      * enough to provide basic RTC features. Alarms will be missing */
 255     i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 0), "ds1338", 0x68);
 256
 257     /* add a TMP423 temperature sensor */
 258     dev = i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 2),
 259                            "tmp423", 0x4c);
 260     object_property_set_int(OBJECT(dev), 31000, "temperature0", &error_abort);
 261     object_property_set_int(OBJECT(dev), 28000, "temperature1", &error_abort);
 262     object_property_set_int(OBJECT(dev), 20000, "temperature2", &error_abort);
 263     object_property_set_int(OBJECT(dev), 110000, "temperature3", &error_abort);
 264 }
 265
 266 static void palmetto_bmc_init(MachineState *machine)
 267 {
 268     aspeed_board_init(machine, &aspeed_boards[PALMETTO_BMC]);
 269 }
 270
 271 static void palmetto_bmc_class_init(ObjectClass *oc, void *data)
 272 {
 273     MachineClass *mc = MACHINE_CLASS(oc);
 274
 275     mc->desc = "OpenPOWER Palmetto BMC (ARM926EJ-S)";
 276     mc->init = palmetto_bmc_init;
 277     mc->max_cpus = 1;
 278     mc->no_sdcard = 1;
 279     mc->no_floppy = 1;
 280     mc->no_cdrom = 1;
 281     mc->no_parallel = 1;
 282     mc->ignore_memory_transaction_failures = true;
 283 }
 284
 285 static const TypeInfo palmetto_bmc_type = {
 286     .name = MACHINE_TYPE_NAME("palmetto-bmc"),
 287     .parent = TYPE_MACHINE,
 288     .class_init = palmetto_bmc_class_init,
 289 };
 290
 291 static void ast2500_evb_i2c_init(AspeedBoardState *bmc)
 292 {
 293     AspeedSoCState *soc = &bmc->soc;
 294
 295     /* The AST2500 EVB expects a LM75 but a TMP105 is compatible */
 296     i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 7), "tmp105", 0x4d);
 297 }
 298
 299 static void ast2500_evb_init(MachineState *machine)
 300 {
 301     aspeed_board_init(machine, &aspeed_boards[AST2500_EVB]);
 302 }
 303
 304 static void ast2500_evb_class_init(ObjectClass *oc, void *data)
 305 {
 306     MachineClass *mc = MACHINE_CLASS(oc);
 307
 308     mc->desc = "Aspeed AST2500 EVB (ARM1176)";
 309     mc->init = ast2500_evb_init;
 310     mc->max_cpus = 1;
 311     mc->no_sdcard = 1;
 312     mc->no_floppy = 1;
 313     mc->no_cdrom = 1;
 314     mc->no_parallel = 1;
 315     mc->ignore_memory_transaction_failures = true;
 316 }
 317
 318 static const TypeInfo ast2500_evb_type = {
 319     .name = MACHINE_TYPE_NAME("ast2500-evb"),
 320     .parent = TYPE_MACHINE,
 321     .class_init = ast2500_evb_class_init,
 322 };
 323
 324 static void romulus_bmc_init(MachineState *machine)
 325 {
 326     aspeed_board_init(machine, &aspeed_boards[ROMULUS_BMC]);
 327 }
 328
 329 static void romulus_bmc_class_init(ObjectClass *oc, void *data)
 330 {
 331     MachineClass *mc = MACHINE_CLASS(oc);
 332
 333     mc->desc = "OpenPOWER Romulus BMC (ARM1176)";
 334     mc->init = romulus_bmc_init;
 335     mc->max_cpus = 1;
 336     mc->no_sdcard = 1;
 337     mc->no_floppy = 1;
 338     mc->no_cdrom = 1;
 339     mc->no_parallel = 1;
 340     mc->ignore_memory_transaction_failures = true;
 341 }
 342
 343 static const TypeInfo romulus_bmc_type = {
 344     .name = MACHINE_TYPE_NAME("romulus-bmc"),
 345     .parent = TYPE_MACHINE,
 346     .class_init = romulus_bmc_class_init,
 347 };
 348
 349 static void aspeed_machine_init(void)
 350 {
 351     type_register_static(&palmetto_bmc_type);
 352     type_register_static(&ast2500_evb_type);
 353     type_register_static(&romulus_bmc_type);
 354 }
 355
 356 type_init(aspeed_machine_init)