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
  24 static struct arm_boot_info aspeed_board_binfo = {
  25     .board_id = -1, /* device-tree-only board */
  26     .nb_cpus = 1,
  27 };
  28
  29 typedef struct AspeedBoardState {
  30     AspeedSoCState soc;
  31     MemoryRegion ram;
  32 } AspeedBoardState;
  33
  34 typedef struct AspeedBoardConfig {
  35     const char *soc_name;
  36     uint32_t hw_strap1;
  37 } AspeedBoardConfig;
  38
  39 enum {
  40     PALMETTO_BMC,
  41     AST2500_EVB,
  42 };
  43
  44 #define PALMETTO_BMC_HW_STRAP1 (                                        \
  45         SCU_AST2400_HW_STRAP_DRAM_SIZE(DRAM_SIZE_256MB) |               \
  46         SCU_AST2400_HW_STRAP_DRAM_CONFIG(2 /* DDR3 with CL=6, CWL=5 */) | \
  47         SCU_AST2400_HW_STRAP_ACPI_DIS |                                 \
  48         SCU_AST2400_HW_STRAP_SET_CLK_SOURCE(AST2400_CLK_48M_IN) |       \
  49         SCU_HW_STRAP_VGA_CLASS_CODE |                                   \
  50         SCU_HW_STRAP_LPC_RESET_PIN |                                    \
  51         SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_M_S_EN) |                \
  52         SCU_AST2400_HW_STRAP_SET_CPU_AHB_RATIO(AST2400_CPU_AHB_RATIO_2_1) | \
  53         SCU_HW_STRAP_SPI_WIDTH |                                        \
  54         SCU_HW_STRAP_VGA_SIZE_SET(VGA_16M_DRAM) |                       \
  55         SCU_AST2400_HW_STRAP_BOOT_MODE(AST2400_SPI_BOOT))
  56
  57 #define AST2500_EVB_HW_STRAP1 ((                                        \
  58         AST2500_HW_STRAP1_DEFAULTS |                                    \
  59         SCU_AST2500_HW_STRAP_SPI_AUTOFETCH_ENABLE |                     \
  60         SCU_AST2500_HW_STRAP_GPIO_STRAP_ENABLE |                        \
  61         SCU_AST2500_HW_STRAP_UART_DEBUG |                               \
  62         SCU_AST2500_HW_STRAP_DDR4_ENABLE |                              \
  63         SCU_HW_STRAP_MAC1_RGMII |                                       \
  64         SCU_HW_STRAP_MAC0_RGMII) &                                      \
  65         ~SCU_HW_STRAP_2ND_BOOT_WDT)
  66
  67 static const AspeedBoardConfig aspeed_boards[] = {
  68     [PALMETTO_BMC] = { "ast2400-a0", PALMETTO_BMC_HW_STRAP1 },
  69     [AST2500_EVB]  = { "ast2500-a1", AST2500_EVB_HW_STRAP1 },
  70 };
  71
  72 static void aspeed_board_init_flashes(AspeedSMCState *s, const char *flashtype,
  73                                       Error **errp)
  74 {
  75     int i ;
  76
  77     for (i = 0; i < s->num_cs; ++i) {
  78         AspeedSMCFlash *fl = &s->flashes[i];
  79         DriveInfo *dinfo = drive_get_next(IF_MTD);
  80         qemu_irq cs_line;
  81
  82         /*
  83          * FIXME: check that we are not using a flash module exceeding
  84          * the controller segment size
  85          */
  86         fl->flash = ssi_create_slave_no_init(s->spi, flashtype);
  87         if (dinfo) {
  88             qdev_prop_set_drive(fl->flash, "drive", blk_by_legacy_dinfo(dinfo),
  89                                 errp);
  90         }
  91         qdev_init_nofail(fl->flash);
  92
  93         cs_line = qdev_get_gpio_in_named(fl->flash, SSI_GPIO_CS, 0);
  94         sysbus_connect_irq(SYS_BUS_DEVICE(s), i + 1, cs_line);
  95     }
  96 }
  97
  98 static void aspeed_board_init(MachineState *machine,
  99                               const AspeedBoardConfig *cfg)
 100 {
 101     AspeedBoardState *bmc;
 102     AspeedSoCClass *sc;
 103
 104     bmc = g_new0(AspeedBoardState, 1);
 105     object_initialize(&bmc->soc, (sizeof(bmc->soc)), cfg->soc_name);
 106     object_property_add_child(OBJECT(machine), "soc", OBJECT(&bmc->soc),
 107                               &error_abort);
 108
 109     sc = ASPEED_SOC_GET_CLASS(&bmc->soc);
 110
 111     object_property_set_int(OBJECT(&bmc->soc), ram_size, "ram-size",
 112                            &error_abort);
 113     object_property_set_int(OBJECT(&bmc->soc), cfg->hw_strap1, "hw-strap1",
 114                             &error_abort);
 115     object_property_set_bool(OBJECT(&bmc->soc), true, "realized",
 116                              &error_abort);
 117
 118     /*
 119      * Allocate RAM after the memory controller has checked the size
 120      * was valid. If not, a default value is used.
 121      */
 122     ram_size = object_property_get_int(OBJECT(&bmc->soc), "ram-size",
 123                                        &error_abort);
 124
 125     memory_region_allocate_system_memory(&bmc->ram, NULL, "ram", ram_size);
 126     memory_region_add_subregion(get_system_memory(), sc->info->sdram_base,
 127                                 &bmc->ram);
 128     object_property_add_const_link(OBJECT(&bmc->soc), "ram", OBJECT(&bmc->ram),
 129                                    &error_abort);
 130
 131     aspeed_board_init_flashes(&bmc->soc.fmc, "n25q256a", &error_abort);
 132     aspeed_board_init_flashes(&bmc->soc.spi[0], "mx25l25635e", &error_abort);
 133
 134     aspeed_board_binfo.kernel_filename = machine->kernel_filename;
 135     aspeed_board_binfo.initrd_filename = machine->initrd_filename;
 136     aspeed_board_binfo.kernel_cmdline = machine->kernel_cmdline;
 137     aspeed_board_binfo.ram_size = ram_size;
 138     aspeed_board_binfo.loader_start = sc->info->sdram_base;
 139
 140     arm_load_kernel(ARM_CPU(first_cpu), &aspeed_board_binfo);
 141 }
 142
 143 static void palmetto_bmc_init(MachineState *machine)
 144 {
 145     aspeed_board_init(machine, &aspeed_boards[PALMETTO_BMC]);
 146 }
 147
 148 static void palmetto_bmc_class_init(ObjectClass *oc, void *data)
 149 {
 150     MachineClass *mc = MACHINE_CLASS(oc);
 151
 152     mc->desc = "OpenPOWER Palmetto BMC (ARM926EJ-S)";
 153     mc->init = palmetto_bmc_init;
 154     mc->max_cpus = 1;
 155     mc->no_sdcard = 1;
 156     mc->no_floppy = 1;
 157     mc->no_cdrom = 1;
 158     mc->no_parallel = 1;
 159 }
 160
 161 static const TypeInfo palmetto_bmc_type = {
 162     .name = MACHINE_TYPE_NAME("palmetto-bmc"),
 163     .parent = TYPE_MACHINE,
 164     .class_init = palmetto_bmc_class_init,
 165 };
 166
 167 static void ast2500_evb_init(MachineState *machine)
 168 {
 169     aspeed_board_init(machine, &aspeed_boards[AST2500_EVB]);
 170 }
 171
 172 static void ast2500_evb_class_init(ObjectClass *oc, void *data)
 173 {
 174     MachineClass *mc = MACHINE_CLASS(oc);
 175
 176     mc->desc = "Aspeed AST2500 EVB (ARM1176)";
 177     mc->init = ast2500_evb_init;
 178     mc->max_cpus = 1;
 179     mc->no_sdcard = 1;
 180     mc->no_floppy = 1;
 181     mc->no_cdrom = 1;
 182     mc->no_parallel = 1;
 183 }
 184
 185 static const TypeInfo ast2500_evb_type = {
 186     .name = MACHINE_TYPE_NAME("ast2500-evb"),
 187     .parent = TYPE_MACHINE,
 188     .class_init = ast2500_evb_class_init,
 189 };
 190
 191 static void aspeed_machine_init(void)
 192 {
 193     type_register_static(&palmetto_bmc_type);
 194     type_register_static(&ast2500_evb_type);
 195 }
 196
 197 type_init(aspeed_machine_init)