Archipelago » qemu

/*

 * ARM RealView Baseboard System emulation.

 *

 * Copyright (c) 2006-2007 CodeSourcery.

 * Written by Paul Brook

 *

 * This code is licenced under the GPL.

 */

#include "sysbus.h"

#include "arm-misc.h"

#include "primecell.h"

#include "devices.h"

#include "pci.h"

#include "usb-ohci.h"

#include "net.h"

#include "sysemu.h"

#include "boards.h"

#include "bitbang_i2c.h"

#include "sysbus.h"

#define SMP_BOOT_ADDR 0xe0000000

typedef struct {

    SysBusDevice busdev;

    bitbang_i2c_interface *bitbang;

    int out;

    int in;

} RealViewI2CState;

static uint32_t realview_i2c_read(void *opaque, target_phys_addr_t offset)

{

    RealViewI2CState *s = (RealViewI2CState *)opaque;

    if (offset == 0) {

        return (s->out & 1) | (s->in << 1);

    } else {

        hw_error("realview_i2c_read: Bad offset 0x%x\n", (int)offset);

        return -1;

    }

}

static void realview_i2c_write(void *opaque, target_phys_addr_t offset,

                               uint32_t value)

{

    RealViewI2CState *s = (RealViewI2CState *)opaque;

    switch (offset) {

    case 0:

        s->out |= value & 3;

        break;

    case 4:

        s->out &= ~value;

        break;

    default:

        hw_error("realview_i2c_write: Bad offset 0x%x\n", (int)offset);

    }

    bitbang_i2c_set(s->bitbang, BITBANG_I2C_SCL, (s->out & 1) != 0);

    s->in = bitbang_i2c_set(s->bitbang, BITBANG_I2C_SDA, (s->out & 2) != 0);

}

static CPUReadMemoryFunc * const realview_i2c_readfn[] = {

   realview_i2c_read,

   realview_i2c_read,

   realview_i2c_read

};

static CPUWriteMemoryFunc * const realview_i2c_writefn[] = {

   realview_i2c_write,

   realview_i2c_write,

   realview_i2c_write

};

static int realview_i2c_init(SysBusDevice *dev)

{

    RealViewI2CState *s = FROM_SYSBUS(RealViewI2CState, dev);

    i2c_bus *bus;

    int iomemtype;

    bus = i2c_init_bus(&dev->qdev, "i2c");

    s->bitbang = bitbang_i2c_init(bus);

    iomemtype = cpu_register_io_memory(realview_i2c_readfn,

                                       realview_i2c_writefn, s);

    sysbus_init_mmio(dev, 0x1000, iomemtype);

    return 0;

}

static SysBusDeviceInfo realview_i2c_info = {

    .init = realview_i2c_init,

    .qdev.name  = "realview_i2c",

    .qdev.size  = sizeof(RealViewI2CState),

};

static void realview_register_devices(void)

{

    sysbus_register_withprop(&realview_i2c_info);

}

/* Board init.  */

static struct arm_boot_info realview_binfo = {

    .smp_loader_start = SMP_BOOT_ADDR,

};

static void secondary_cpu_reset(void *opaque)

{

  CPUState *env = opaque;

  cpu_reset(env);

  /* Set entry point for secondary CPUs.  This assumes we're using

     the init code from arm_boot.c.  Real hardware resets all CPUs

     the same.  */

  env->regs[15] = SMP_BOOT_ADDR;

}

/* The following two lists must be consistent.  */

enum realview_board_type {

    BOARD_EB,

    BOARD_EB_MPCORE,

    BOARD_PB_A8,

    BOARD_PBX_A9,

};

static const int realview_board_id[] = {

    0x33b,

    0x33b,

    0x769,

    0x76d

};

static void realview_init(ram_addr_t ram_size,

                     const char *boot_device,

                     const char *kernel_filename, const char *kernel_cmdline,

                     const char *initrd_filename, const char *cpu_model,

                     enum realview_board_type board_type)

{

    CPUState *env = NULL;

    ram_addr_t ram_offset;

    DeviceState *dev;

    SysBusDevice *busdev;

    qemu_irq *irqp;

    qemu_irq pic[64];

    PCIBus *pci_bus;

    NICInfo *nd;

    i2c_bus *i2c;

    int n;

    int done_nic = 0;

    qemu_irq cpu_irq[4];

    int is_mpcore = 0;

    int is_pb = 0;

    uint32_t proc_id = 0;

    uint32_t sys_id;

    ram_addr_t low_ram_size;

    switch (board_type) {

    case BOARD_EB:

        break;

    case BOARD_EB_MPCORE:

        is_mpcore = 1;

        break;

    case BOARD_PB_A8:

        is_pb = 1;

        break;

    case BOARD_PBX_A9:

        is_mpcore = 1;

        is_pb = 1;

        break;

    }

    for (n = 0; n < smp_cpus; n++) {

        env = cpu_init(cpu_model);

        if (!env) {

            fprintf(stderr, "Unable to find CPU definition\n");

            exit(1);

        }

        irqp = arm_pic_init_cpu(env);

        cpu_irq[n] = irqp[ARM_PIC_CPU_IRQ];

        if (n > 0) {

            qemu_register_reset(secondary_cpu_reset, env);

        }

    }

    if (arm_feature(env, ARM_FEATURE_V7)) {

        if (is_mpcore) {

            proc_id = 0x0c000000;

        } else {

            proc_id = 0x0e000000;

        }

    } else if (arm_feature(env, ARM_FEATURE_V6K)) {

        proc_id = 0x06000000;

    } else if (arm_feature(env, ARM_FEATURE_V6)) {

        proc_id = 0x04000000;

    } else {

        proc_id = 0x02000000;

    }

    if (is_pb && ram_size > 0x20000000) {

        /* Core tile RAM.  */

        low_ram_size = ram_size - 0x20000000;

        ram_size = 0x20000000;

        ram_offset = qemu_ram_alloc(NULL, "realview.lowmem", low_ram_size);

        cpu_register_physical_memory(0x20000000, low_ram_size,

                                     ram_offset | IO_MEM_RAM);

    }

    ram_offset = qemu_ram_alloc(NULL, "realview.highmem", ram_size);

    low_ram_size = ram_size;

    if (low_ram_size > 0x10000000)

      low_ram_size = 0x10000000;

    /* SDRAM at address zero.  */

    cpu_register_physical_memory(0, low_ram_size, ram_offset | IO_MEM_RAM);

    if (is_pb) {

        /* And again at a high address.  */

        cpu_register_physical_memory(0x70000000, ram_size,

                                     ram_offset | IO_MEM_RAM);

    } else {

        ram_size = low_ram_size;

    }

    sys_id = is_pb ? 0x01780500 : 0xc1400400;

    arm_sysctl_init(0x10000000, sys_id, proc_id);

    if (is_mpcore) {

        dev = qdev_create(NULL, is_pb ? "a9mpcore_priv": "realview_mpcore");

        qdev_prop_set_uint32(dev, "num-cpu", smp_cpus);

        qdev_init_nofail(dev);

        busdev = sysbus_from_qdev(dev);

        if (is_pb) {

            realview_binfo.smp_priv_base = 0x1f000000;

        } else {

            realview_binfo.smp_priv_base = 0x10100000;

        }

        sysbus_mmio_map(busdev, 0, realview_binfo.smp_priv_base);

        for (n = 0; n < smp_cpus; n++) {

            sysbus_connect_irq(busdev, n, cpu_irq[n]);

        }

    } else {

        uint32_t gic_addr = is_pb ? 0x1e000000 : 0x10040000;

        /* For now just create the nIRQ GIC, and ignore the others.  */

        dev = sysbus_create_simple("realview_gic", gic_addr, cpu_irq[0]);

    }

    for (n = 0; n < 64; n++) {

        pic[n] = qdev_get_gpio_in(dev, n);

    }

    sysbus_create_simple("pl050_keyboard", 0x10006000, pic[20]);

    sysbus_create_simple("pl050_mouse", 0x10007000, pic[21]);

    sysbus_create_simple("pl011", 0x10009000, pic[12]);

    sysbus_create_simple("pl011", 0x1000a000, pic[13]);

    sysbus_create_simple("pl011", 0x1000b000, pic[14]);

    sysbus_create_simple("pl011", 0x1000c000, pic[15]);

    /* DMA controller is optional, apparently.  */

    sysbus_create_simple("pl081", 0x10030000, pic[24]);

    sysbus_create_simple("sp804", 0x10011000, pic[4]);

    sysbus_create_simple("sp804", 0x10012000, pic[5]);

    sysbus_create_simple("pl110_versatile", 0x10020000, pic[23]);

    sysbus_create_varargs("pl181", 0x10005000, pic[17], pic[18], NULL);

    sysbus_create_simple("pl031", 0x10017000, pic[10]);

    if (!is_pb) {

        dev = sysbus_create_varargs("realview_pci", 0x60000000,

                                    pic[48], pic[49], pic[50], pic[51], NULL);

        pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci");

        if (usb_enabled) {

            usb_ohci_init_pci(pci_bus, -1);

        }

        n = drive_get_max_bus(IF_SCSI);

        while (n >= 0) {

            pci_create_simple(pci_bus, -1, "lsi53c895a");

            n--;

        }

    }

    for(n = 0; n < nb_nics; n++) {

        nd = &nd_table[n];

        if ((!nd->model && !done_nic)

            || strcmp(nd->model, is_pb ? "lan9118" : "smc91c111") == 0) {

            if (is_pb) {

                lan9118_init(nd, 0x4e000000, pic[28]);

            } else {

                smc91c111_init(nd, 0x4e000000, pic[28]);

            }

            done_nic = 1;

        } else {

            pci_nic_init_nofail(nd, "rtl8139", NULL);

        }

    }

    dev = sysbus_create_simple("realview_i2c", 0x10002000, NULL);

    i2c = (i2c_bus *)qdev_get_child_bus(dev, "i2c");

    i2c_create_slave(i2c, "ds1338", 0x68);

    /* Memory map for RealView Emulation Baseboard:  */

    /* 0x10000000 System registers.  */

    /*  0x10001000 System controller.  */

    /* 0x10002000 Two-Wire Serial Bus.  */

    /* 0x10003000 Reserved.  */

    /*  0x10004000 AACI.  */

    /*  0x10005000 MCI.  */

    /* 0x10006000 KMI0.  */

    /* 0x10007000 KMI1.  */

    /*  0x10008000 Character LCD. (EB) */

    /* 0x10009000 UART0.  */

    /* 0x1000a000 UART1.  */

    /* 0x1000b000 UART2.  */

    /* 0x1000c000 UART3.  */

    /*  0x1000d000 SSPI.  */

    /*  0x1000e000 SCI.  */

    /* 0x1000f000 Reserved.  */

    /*  0x10010000 Watchdog.  */

    /* 0x10011000 Timer 0+1.  */

    /* 0x10012000 Timer 2+3.  */

    /*  0x10013000 GPIO 0.  */

    /*  0x10014000 GPIO 1.  */

    /*  0x10015000 GPIO 2.  */

    /*  0x10002000 Two-Wire Serial Bus - DVI. (PB) */

    /* 0x10017000 RTC.  */

    /*  0x10018000 DMC.  */

    /*  0x10019000 PCI controller config.  */

    /*  0x10020000 CLCD.  */

    /* 0x10030000 DMA Controller.  */

    /* 0x10040000 GIC1. (EB) */

    /*  0x10050000 GIC2. (EB) */

    /*  0x10060000 GIC3. (EB) */

    /*  0x10070000 GIC4. (EB) */

    /*  0x10080000 SMC.  */

    /* 0x1e000000 GIC1. (PB) */

    /*  0x1e001000 GIC2. (PB) */

    /*  0x1e002000 GIC3. (PB) */

    /*  0x1e003000 GIC4. (PB) */

    /*  0x40000000 NOR flash.  */

    /*  0x44000000 DoC flash.  */

    /*  0x48000000 SRAM.  */

    /*  0x4c000000 Configuration flash.  */

    /* 0x4e000000 Ethernet.  */

    /*  0x4f000000 USB.  */

    /*  0x50000000 PISMO.  */

    /*  0x54000000 PISMO.  */

    /*  0x58000000 PISMO.  */

    /*  0x5c000000 PISMO.  */

    /* 0x60000000 PCI.  */

    /* 0x61000000 PCI Self Config.  */

    /* 0x62000000 PCI Config.  */

    /* 0x63000000 PCI IO.  */

    /* 0x64000000 PCI mem 0.  */

    /* 0x68000000 PCI mem 1.  */

    /* 0x6c000000 PCI mem 2.  */

    /* ??? Hack to map an additional page of ram for the secondary CPU

       startup code.  I guess this works on real hardware because the

       BootROM happens to be in ROM/flash or in memory that isn't clobbered

       until after Linux boots the secondary CPUs.  */

    ram_offset = qemu_ram_alloc(NULL, "realview.hack", 0x1000);

    cpu_register_physical_memory(SMP_BOOT_ADDR, 0x1000,

                                 ram_offset | IO_MEM_RAM);

    realview_binfo.ram_size = ram_size;

    realview_binfo.kernel_filename = kernel_filename;

    realview_binfo.kernel_cmdline = kernel_cmdline;

    realview_binfo.initrd_filename = initrd_filename;

    realview_binfo.nb_cpus = smp_cpus;

    realview_binfo.board_id = realview_board_id[board_type];

    realview_binfo.loader_start = (board_type == BOARD_PB_A8 ? 0x70000000 : 0);

    arm_load_kernel(first_cpu, &realview_binfo);

}

static void realview_eb_init(ram_addr_t ram_size,

                     const char *boot_device,

                     const char *kernel_filename, const char *kernel_cmdline,

                     const char *initrd_filename, const char *cpu_model)

{

    if (!cpu_model) {

        cpu_model = "arm926";

    }

    realview_init(ram_size, boot_device, kernel_filename, kernel_cmdline,

                  initrd_filename, cpu_model, BOARD_EB);

}

static void realview_eb_mpcore_init(ram_addr_t ram_size,

                     const char *boot_device,

                     const char *kernel_filename, const char *kernel_cmdline,

                     const char *initrd_filename, const char *cpu_model)

{

    if (!cpu_model) {

        cpu_model = "arm11mpcore";

    }

    realview_init(ram_size, boot_device, kernel_filename, kernel_cmdline,

                  initrd_filename, cpu_model, BOARD_EB_MPCORE);

}

static void realview_pb_a8_init(ram_addr_t ram_size,

                     const char *boot_device,

                     const char *kernel_filename, const char *kernel_cmdline,

                     const char *initrd_filename, const char *cpu_model)

{

    if (!cpu_model) {

        cpu_model = "cortex-a8";

    }

    realview_init(ram_size, boot_device, kernel_filename, kernel_cmdline,

                  initrd_filename, cpu_model, BOARD_PB_A8);

}

static void realview_pbx_a9_init(ram_addr_t ram_size,

                     const char *boot_device,

                     const char *kernel_filename, const char *kernel_cmdline,

                     const char *initrd_filename, const char *cpu_model)

{

    if (!cpu_model) {

        cpu_model = "cortex-a9";

    }

    realview_init(ram_size, boot_device, kernel_filename, kernel_cmdline,

                  initrd_filename, cpu_model, BOARD_PBX_A9);

}

static QEMUMachine realview_eb_machine = {

    .name = "realview-eb",

    .desc = "ARM RealView Emulation Baseboard (ARM926EJ-S)",

    .init = realview_eb_init,

    .use_scsi = 1,

};

static QEMUMachine realview_eb_mpcore_machine = {

    .name = "realview-eb-mpcore",

    .desc = "ARM RealView Emulation Baseboard (ARM11MPCore)",

    .init = realview_eb_mpcore_init,

    .use_scsi = 1,

    .max_cpus = 4,

};

static QEMUMachine realview_pb_a8_machine = {

    .name = "realview-pb-a8",

    .desc = "ARM RealView Platform Baseboard for Cortex-A8",

    .init = realview_pb_a8_init,

};

static QEMUMachine realview_pbx_a9_machine = {

    .name = "realview-pbx-a9",

    .desc = "ARM RealView Platform Baseboard Explore for Cortex-A9",

    .init = realview_pbx_a9_init,

    .use_scsi = 1,

    .max_cpus = 4,

};

static void realview_machine_init(void)

{

    qemu_register_machine(&realview_eb_machine);

    qemu_register_machine(&realview_eb_mpcore_machine);

    qemu_register_machine(&realview_pb_a8_machine);

    qemu_register_machine(&realview_pbx_a9_machine);

}

machine_init(realview_machine_init);

device_init(realview_register_devices)