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 };
  42
  43 #define PALMETTO_BMC_HW_STRAP1 (                                        \
  44         SCU_AST2400_HW_STRAP_DRAM_SIZE(DRAM_SIZE_256MB) |               \
  45         SCU_AST2400_HW_STRAP_DRAM_CONFIG(2 /* DDR3 with CL=6, CWL=5 */) | \
  46         SCU_AST2400_HW_STRAP_ACPI_DIS |                                 \
  47         SCU_AST2400_HW_STRAP_SET_CLK_SOURCE(AST2400_CLK_48M_IN) |       \
  48         SCU_HW_STRAP_VGA_CLASS_CODE |                                   \
  49         SCU_HW_STRAP_LPC_RESET_PIN |                                    \
  50         SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_M_S_EN) |                \
  51         SCU_AST2400_HW_STRAP_SET_CPU_AHB_RATIO(AST2400_CPU_AHB_RATIO_2_1) | \
  52         SCU_HW_STRAP_SPI_WIDTH |                                        \
  53         SCU_HW_STRAP_VGA_SIZE_SET(VGA_16M_DRAM) |                       \
  54         SCU_AST2400_HW_STRAP_BOOT_MODE(AST2400_SPI_BOOT))
  55
  56 static const AspeedBoardConfig aspeed_boards[] = {
  57     [PALMETTO_BMC] = { "ast2400-a0", PALMETTO_BMC_HW_STRAP1 },
  58 };
  59
  60 static void aspeed_board_init_flashes(AspeedSMCState *s, const char *flashtype,
  61                                       Error **errp)
  62 {
  63     int i ;
  64
  65     for (i = 0; i < s->num_cs; ++i) {
  66         AspeedSMCFlash *fl = &s->flashes[i];
  67         DriveInfo *dinfo = drive_get_next(IF_MTD);
  68         qemu_irq cs_line;
  69
  70         /*
  71          * FIXME: check that we are not using a flash module exceeding
  72          * the controller segment size
  73          */
  74         fl->flash = ssi_create_slave_no_init(s->spi, flashtype);
  75         if (dinfo) {
  76             qdev_prop_set_drive(fl->flash, "drive", blk_by_legacy_dinfo(dinfo),
  77                                 errp);
  78         }
  79         qdev_init_nofail(fl->flash);
  80
  81         cs_line = qdev_get_gpio_in_named(fl->flash, SSI_GPIO_CS, 0);
  82         sysbus_connect_irq(SYS_BUS_DEVICE(s), i + 1, cs_line);
  83     }
  84 }
  85
  86 static void aspeed_board_init(MachineState *machine,
  87                               const AspeedBoardConfig *cfg)
  88 {
  89     AspeedBoardState *bmc;
  90     AspeedSoCClass *sc;
  91
  92     bmc = g_new0(AspeedBoardState, 1);
  93     object_initialize(&bmc->soc, (sizeof(bmc->soc)), cfg->soc_name);
  94     object_property_add_child(OBJECT(machine), "soc", OBJECT(&bmc->soc),
  95                               &error_abort);
  96
  97     sc = ASPEED_SOC_GET_CLASS(&bmc->soc);
  98
  99     memory_region_allocate_system_memory(&bmc->ram, NULL, "ram", ram_size);
 100     memory_region_add_subregion(get_system_memory(), sc->info->sdram_base,
 101                                 &bmc->ram);
 102     object_property_add_const_link(OBJECT(&bmc->soc), "ram", OBJECT(&bmc->ram),
 103                                    &error_abort);
 104     object_property_set_int(OBJECT(&bmc->soc), cfg->hw_strap1, "hw-strap1",
 105                             &error_abort);
 106     object_property_set_bool(OBJECT(&bmc->soc), true, "realized",
 107                              &error_abort);
 108
 109     aspeed_board_init_flashes(&bmc->soc.smc, "n25q256a", &error_abort);
 110     aspeed_board_init_flashes(&bmc->soc.spi, "mx25l25635e", &error_abort);
 111
 112     aspeed_board_binfo.kernel_filename = machine->kernel_filename;
 113     aspeed_board_binfo.initrd_filename = machine->initrd_filename;
 114     aspeed_board_binfo.kernel_cmdline = machine->kernel_cmdline;
 115     aspeed_board_binfo.ram_size = ram_size;
 116     aspeed_board_binfo.loader_start = sc->info->sdram_base;
 117
 118     arm_load_kernel(ARM_CPU(first_cpu), &aspeed_board_binfo);
 119 }
 120
 121 static void palmetto_bmc_init(MachineState *machine)
 122 {
 123     aspeed_board_init(machine, &aspeed_boards[PALMETTO_BMC]);
 124 }
 125
 126 static void palmetto_bmc_class_init(ObjectClass *oc, void *data)
 127 {
 128     MachineClass *mc = MACHINE_CLASS(oc);
 129
 130     mc->desc = "OpenPOWER Palmetto BMC (ARM926EJ-S)";
 131     mc->init = palmetto_bmc_init;
 132     mc->max_cpus = 1;
 133     mc->no_sdcard = 1;
 134     mc->no_floppy = 1;
 135     mc->no_cdrom = 1;
 136     mc->no_sdcard = 1;
 137     mc->no_parallel = 1;
 138 }
 139
 140 static const TypeInfo palmetto_bmc_type = {
 141     .name = MACHINE_TYPE_NAME("palmetto-bmc"),
 142     .parent = TYPE_MACHINE,
 143     .class_init = palmetto_bmc_class_init,
 144 };
 145
 146 static void aspeed_machine_init(void)
 147 {
 148     type_register_static(&palmetto_bmc_type);
 149 }
 150
 151 type_init(aspeed_machine_init)