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 } 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 const AspeedBoardConfig aspeed_boards[] = {
  86     [PALMETTO_BMC] = {
  87         .soc_name  = "ast2400-a1",
  88         .hw_strap1 = PALMETTO_BMC_HW_STRAP1,
  89         .fmc_model = "n25q256a",
  90         .spi_model = "mx25l25635e",
  91         .num_cs    = 1,
  92     },
  93     [AST2500_EVB]  = {
  94         .soc_name  = "ast2500-a1",
  95         .hw_strap1 = AST2500_EVB_HW_STRAP1,
  96         .fmc_model = "n25q256a",
  97         .spi_model = "mx25l25635e",
  98         .num_cs    = 1,
  99     },
 100     [ROMULUS_BMC]  = {
 101         .soc_name  = "ast2500-a1",
 102         .hw_strap1 = ROMULUS_BMC_HW_STRAP1,
 103         .fmc_model = "n25q256a",
 104         .spi_model = "mx66l1g45g",
 105         .num_cs    = 2,
 106     },
 107 };
 108
 109 #define FIRMWARE_ADDR 0x0
 110
 111 static void write_boot_rom(DriveInfo *dinfo, hwaddr addr, size_t rom_size,
 112                            Error **errp)
 113 {
 114     BlockBackend *blk = blk_by_legacy_dinfo(dinfo);
 115     uint8_t *storage;
 116     int64_t size;
 117
 118     /* The block backend size should have already been 'validated' by
 119      * the creation of the m25p80 object.
 120      */
 121     size = blk_getlength(blk);
 122     if (size <= 0) {
 123         error_setg(errp, "failed to get flash size");
 124         return;
 125     }
 126
 127     if (rom_size > size) {
 128         rom_size = size;
 129     }
 130
 131     storage = g_new0(uint8_t, rom_size);
 132     if (blk_pread(blk, 0, storage, rom_size) < 0) {
 133         error_setg(errp, "failed to read the initial flash content");
 134         return;
 135     }
 136
 137     rom_add_blob_fixed("aspeed.boot_rom", storage, rom_size, addr);
 138     g_free(storage);
 139 }
 140
 141 static void aspeed_board_init_flashes(AspeedSMCState *s, const char *flashtype,
 142                                       Error **errp)
 143 {
 144     int i ;
 145
 146     for (i = 0; i < s->num_cs; ++i) {
 147         AspeedSMCFlash *fl = &s->flashes[i];
 148         DriveInfo *dinfo = drive_get_next(IF_MTD);
 149         qemu_irq cs_line;
 150
 151         fl->flash = ssi_create_slave_no_init(s->spi, flashtype);
 152         if (dinfo) {
 153             qdev_prop_set_drive(fl->flash, "drive", blk_by_legacy_dinfo(dinfo),
 154                                 errp);
 155         }
 156         qdev_init_nofail(fl->flash);
 157
 158         cs_line = qdev_get_gpio_in_named(fl->flash, SSI_GPIO_CS, 0);
 159         sysbus_connect_irq(SYS_BUS_DEVICE(s), i + 1, cs_line);
 160     }
 161 }
 162
 163 static void aspeed_board_init(MachineState *machine,
 164                               const AspeedBoardConfig *cfg)
 165 {
 166     AspeedBoardState *bmc;
 167     AspeedSoCClass *sc;
 168     DriveInfo *drive0 = drive_get(IF_MTD, 0, 0);
 169
 170     bmc = g_new0(AspeedBoardState, 1);
 171     object_initialize(&bmc->soc, (sizeof(bmc->soc)), cfg->soc_name);
 172     object_property_add_child(OBJECT(machine), "soc", OBJECT(&bmc->soc),
 173                               &error_abort);
 174
 175     sc = ASPEED_SOC_GET_CLASS(&bmc->soc);
 176
 177     object_property_set_int(OBJECT(&bmc->soc), ram_size, "ram-size",
 178                            &error_abort);
 179     object_property_set_int(OBJECT(&bmc->soc), cfg->hw_strap1, "hw-strap1",
 180                             &error_abort);
 181     object_property_set_int(OBJECT(&bmc->soc), cfg->num_cs, "num-cs",
 182                             &error_abort);
 183     object_property_set_bool(OBJECT(&bmc->soc), true, "realized",
 184                              &error_abort);
 185
 186     /*
 187      * Allocate RAM after the memory controller has checked the size
 188      * was valid. If not, a default value is used.
 189      */
 190     ram_size = object_property_get_int(OBJECT(&bmc->soc), "ram-size",
 191                                        &error_abort);
 192
 193     memory_region_allocate_system_memory(&bmc->ram, NULL, "ram", ram_size);
 194     memory_region_add_subregion(get_system_memory(), sc->info->sdram_base,
 195                                 &bmc->ram);
 196     object_property_add_const_link(OBJECT(&bmc->soc), "ram", OBJECT(&bmc->ram),
 197                                    &error_abort);
 198
 199     aspeed_board_init_flashes(&bmc->soc.fmc, cfg->fmc_model, &error_abort);
 200     aspeed_board_init_flashes(&bmc->soc.spi[0], cfg->spi_model, &error_abort);
 201
 202     /* Install first FMC flash content as a boot rom. */
 203     if (drive0) {
 204         AspeedSMCFlash *fl = &bmc->soc.fmc.flashes[0];
 205         MemoryRegion *boot_rom = g_new(MemoryRegion, 1);
 206
 207         /*
 208          * create a ROM region using the default mapping window size of
 209          * the flash module. The window size is 64MB for the AST2400
 210          * SoC and 128MB for the AST2500 SoC, which is twice as big as
 211          * needed by the flash modules of the Aspeed machines.
 212          */
 213         memory_region_init_rom(boot_rom, OBJECT(bmc), "aspeed.boot_rom",
 214                                fl->size, &error_abort);
 215         memory_region_add_subregion(get_system_memory(), FIRMWARE_ADDR,
 216                                     boot_rom);
 217         write_boot_rom(drive0, FIRMWARE_ADDR, fl->size, &error_abort);
 218     }
 219
 220     aspeed_board_binfo.kernel_filename = machine->kernel_filename;
 221     aspeed_board_binfo.initrd_filename = machine->initrd_filename;
 222     aspeed_board_binfo.kernel_cmdline = machine->kernel_cmdline;
 223     aspeed_board_binfo.ram_size = ram_size;
 224     aspeed_board_binfo.loader_start = sc->info->sdram_base;
 225
 226     arm_load_kernel(ARM_CPU(first_cpu), &aspeed_board_binfo);
 227 }
 228
 229 static void palmetto_bmc_init(MachineState *machine)
 230 {
 231     aspeed_board_init(machine, &aspeed_boards[PALMETTO_BMC]);
 232 }
 233
 234 static void palmetto_bmc_class_init(ObjectClass *oc, void *data)
 235 {
 236     MachineClass *mc = MACHINE_CLASS(oc);
 237
 238     mc->desc = "OpenPOWER Palmetto BMC (ARM926EJ-S)";
 239     mc->init = palmetto_bmc_init;
 240     mc->max_cpus = 1;
 241     mc->no_sdcard = 1;
 242     mc->no_floppy = 1;
 243     mc->no_cdrom = 1;
 244     mc->no_parallel = 1;
 245 }
 246
 247 static const TypeInfo palmetto_bmc_type = {
 248     .name = MACHINE_TYPE_NAME("palmetto-bmc"),
 249     .parent = TYPE_MACHINE,
 250     .class_init = palmetto_bmc_class_init,
 251 };
 252
 253 static void ast2500_evb_init(MachineState *machine)
 254 {
 255     aspeed_board_init(machine, &aspeed_boards[AST2500_EVB]);
 256 }
 257
 258 static void ast2500_evb_class_init(ObjectClass *oc, void *data)
 259 {
 260     MachineClass *mc = MACHINE_CLASS(oc);
 261
 262     mc->desc = "Aspeed AST2500 EVB (ARM1176)";
 263     mc->init = ast2500_evb_init;
 264     mc->max_cpus = 1;
 265     mc->no_sdcard = 1;
 266     mc->no_floppy = 1;
 267     mc->no_cdrom = 1;
 268     mc->no_parallel = 1;
 269 }
 270
 271 static const TypeInfo ast2500_evb_type = {
 272     .name = MACHINE_TYPE_NAME("ast2500-evb"),
 273     .parent = TYPE_MACHINE,
 274     .class_init = ast2500_evb_class_init,
 275 };
 276
 277 static void romulus_bmc_init(MachineState *machine)
 278 {
 279     aspeed_board_init(machine, &aspeed_boards[ROMULUS_BMC]);
 280 }
 281
 282 static void romulus_bmc_class_init(ObjectClass *oc, void *data)
 283 {
 284     MachineClass *mc = MACHINE_CLASS(oc);
 285
 286     mc->desc = "OpenPOWER Romulus BMC (ARM1176)";
 287     mc->init = romulus_bmc_init;
 288     mc->max_cpus = 1;
 289     mc->no_sdcard = 1;
 290     mc->no_floppy = 1;
 291     mc->no_cdrom = 1;
 292     mc->no_parallel = 1;
 293 }
 294
 295 static const TypeInfo romulus_bmc_type = {
 296     .name = MACHINE_TYPE_NAME("romulus-bmc"),
 297     .parent = TYPE_MACHINE,
 298     .class_init = romulus_bmc_class_init,
 299 };
 300
 301 static void aspeed_machine_init(void)
 302 {
 303     type_register_static(&palmetto_bmc_type);
 304     type_register_static(&ast2500_evb_type);
 305     type_register_static(&romulus_bmc_type);
 306 }
 307
 308 type_init(aspeed_machine_init)