hw/arm/fby35.c

   1 /*
   2  * Copyright (c) Meta Platforms, Inc. and affiliates. (http://www.meta.com)
   3  *
   4  * This code is licensed under the GPL version 2 or later. See the COPYING
   5  * file in the top-level directory.
   6  */
   7
   8 #include "qemu/osdep.h"
   9 #include "qemu/units.h"
  10 #include "qapi/error.h"
  11 #include "sysemu/sysemu.h"
  12 #include "sysemu/block-backend.h"
  13 #include "hw/boards.h"
  14 #include "hw/qdev-clock.h"
  15 #include "hw/arm/aspeed_soc.h"
  16 #include "hw/arm/boot.h"
  17
  18 #define TYPE_FBY35 MACHINE_TYPE_NAME("fby35")
  19 OBJECT_DECLARE_SIMPLE_TYPE(Fby35State, FBY35);
  20
  21 struct Fby35State {
  22     MachineState parent_obj;
  23
  24     MemoryRegion bmc_memory;
  25     MemoryRegion bmc_dram;
  26     MemoryRegion bmc_boot_rom;
  27     MemoryRegion bic_memory;
  28     Clock *bic_sysclk;
  29
  30     AspeedSoCState bmc;
  31     AspeedSoCState bic;
  32
  33     bool mmio_exec;
  34 };
  35
  36 #define FBY35_BMC_RAM_SIZE (2 * GiB)
  37 #define FBY35_BMC_FIRMWARE_ADDR 0x0
  38
  39 static void fby35_bmc_write_boot_rom(DriveInfo *dinfo, MemoryRegion *mr,
  40                                      hwaddr offset, size_t rom_size,
  41                                      Error **errp)
  42 {
  43     BlockBackend *blk = blk_by_legacy_dinfo(dinfo);
  44     g_autofree void *storage = NULL;
  45     int64_t size;
  46
  47     /*
  48      * The block backend size should have already been 'validated' by
  49      * the creation of the m25p80 object.
  50      */
  51     size = blk_getlength(blk);
  52     if (size <= 0) {
  53         error_setg(errp, "failed to get flash size");
  54         return;
  55     }
  56
  57     if (rom_size > size) {
  58         rom_size = size;
  59     }
  60
  61     storage = g_malloc0(rom_size);
  62     if (blk_pread(blk, 0, rom_size, storage, 0) < 0) {
  63         error_setg(errp, "failed to read the initial flash content");
  64         return;
  65     }
  66
  67     /* TODO: find a better way to install the ROM */
  68     memcpy(memory_region_get_ram_ptr(mr) + offset, storage, rom_size);
  69 }
  70
  71 static void fby35_bmc_init(Fby35State *s)
  72 {
  73     DriveInfo *drive0 = drive_get(IF_MTD, 0, 0);
  74
  75     object_initialize_child(OBJECT(s), "bmc", &s->bmc, "ast2600-a3");
  76
  77     memory_region_init(&s->bmc_memory, OBJECT(&s->bmc), "bmc-memory",
  78                        UINT64_MAX);
  79     memory_region_init_ram(&s->bmc_dram, OBJECT(&s->bmc), "bmc-dram",
  80                            FBY35_BMC_RAM_SIZE, &error_abort);
  81
  82     object_property_set_int(OBJECT(&s->bmc), "ram-size", FBY35_BMC_RAM_SIZE,
  83                             &error_abort);
  84     object_property_set_link(OBJECT(&s->bmc), "memory", OBJECT(&s->bmc_memory),
  85                              &error_abort);
  86     object_property_set_link(OBJECT(&s->bmc), "dram", OBJECT(&s->bmc_dram),
  87                              &error_abort);
  88     object_property_set_int(OBJECT(&s->bmc), "hw-strap1", 0x000000C0,
  89                             &error_abort);
  90     object_property_set_int(OBJECT(&s->bmc), "hw-strap2", 0x00000003,
  91                             &error_abort);
  92     aspeed_soc_uart_set_chr(&s->bmc, ASPEED_DEV_UART5, serial_hd(0));
  93     qdev_realize(DEVICE(&s->bmc), NULL, &error_abort);
  94
  95     aspeed_board_init_flashes(&s->bmc.fmc, "n25q00", 2, 0);
  96
  97     /* Install first FMC flash content as a boot rom. */
  98     if (drive0) {
  99         AspeedSMCFlash *fl = &s->bmc.fmc.flashes[0];
 100         MemoryRegion *boot_rom = g_new(MemoryRegion, 1);
 101         uint64_t size = memory_region_size(&fl->mmio);
 102
 103         if (!s->mmio_exec) {
 104             memory_region_init_rom(boot_rom, NULL, "aspeed.boot_rom",
 105                                    size, &error_abort);
 106             memory_region_add_subregion(&s->bmc_memory, FBY35_BMC_FIRMWARE_ADDR,
 107                                         boot_rom);
 108             fby35_bmc_write_boot_rom(drive0, boot_rom, FBY35_BMC_FIRMWARE_ADDR,
 109                                      size, &error_abort);
 110         }
 111     }
 112 }
 113
 114 static void fby35_bic_init(Fby35State *s)
 115 {
 116     s->bic_sysclk = clock_new(OBJECT(s), "SYSCLK");
 117     clock_set_hz(s->bic_sysclk, 200000000ULL);
 118
 119     object_initialize_child(OBJECT(s), "bic", &s->bic, "ast1030-a1");
 120
 121     memory_region_init(&s->bic_memory, OBJECT(&s->bic), "bic-memory",
 122                        UINT64_MAX);
 123
 124     qdev_connect_clock_in(DEVICE(&s->bic), "sysclk", s->bic_sysclk);
 125     object_property_set_link(OBJECT(&s->bic), "memory", OBJECT(&s->bic_memory),
 126                              &error_abort);
 127     aspeed_soc_uart_set_chr(&s->bic, ASPEED_DEV_UART5, serial_hd(1));
 128     qdev_realize(DEVICE(&s->bic), NULL, &error_abort);
 129
 130     aspeed_board_init_flashes(&s->bic.fmc, "sst25vf032b", 2, 2);
 131     aspeed_board_init_flashes(&s->bic.spi[0], "sst25vf032b", 2, 4);
 132     aspeed_board_init_flashes(&s->bic.spi[1], "sst25vf032b", 2, 6);
 133 }
 134
 135 static void fby35_init(MachineState *machine)
 136 {
 137     Fby35State *s = FBY35(machine);
 138
 139     fby35_bmc_init(s);
 140     fby35_bic_init(s);
 141 }
 142
 143
 144 static bool fby35_get_mmio_exec(Object *obj, Error **errp)
 145 {
 146     return FBY35(obj)->mmio_exec;
 147 }
 148
 149 static void fby35_set_mmio_exec(Object *obj, bool value, Error **errp)
 150 {
 151     FBY35(obj)->mmio_exec = value;
 152 }
 153
 154 static void fby35_instance_init(Object *obj)
 155 {
 156     FBY35(obj)->mmio_exec = false;
 157 }
 158
 159 static void fby35_class_init(ObjectClass *oc, void *data)
 160 {
 161     MachineClass *mc = MACHINE_CLASS(oc);
 162
 163     mc->desc = "Meta Platforms fby35";
 164     mc->init = fby35_init;
 165     mc->no_floppy = 1;
 166     mc->no_cdrom = 1;
 167     mc->min_cpus = mc->max_cpus = mc->default_cpus = 3;
 168
 169     object_class_property_add_bool(oc, "execute-in-place",
 170                                    fby35_get_mmio_exec,
 171                                    fby35_set_mmio_exec);
 172     object_class_property_set_description(oc, "execute-in-place",
 173                            "boot directly from CE0 flash device");
 174 }
 175
 176 static const TypeInfo fby35_types[] = {
 177     {
 178         .name = MACHINE_TYPE_NAME("fby35"),
 179         .parent = TYPE_MACHINE,
 180         .class_init = fby35_class_init,
 181         .instance_size = sizeof(Fby35State),
 182         .instance_init = fby35_instance_init,
 183     },
 184 };
 185
 186 DEFINE_TYPES(fby35_types);