Archipelago » qemu

/* 

 * ARM Versatile Platform/Application Baseboard System emulation.

 *

 * Copyright (c) 2005-2007 CodeSourcery.

 * Written by Paul Brook

 *

 * This code is licenced under the GPL.

 */

#include "vl.h"

#include "arm_pic.h"

/* Primary interrupt controller.  */

typedef struct vpb_sic_state

{

  uint32_t base;

  uint32_t level;

  uint32_t mask;

  uint32_t pic_enable;

  qemu_irq *parent;

  int irq;

} vpb_sic_state;

static void vpb_sic_update(vpb_sic_state *s)

{

    uint32_t flags;

    flags = s->level & s->mask;

    qemu_set_irq(s->parent[s->irq], flags != 0);

}

static void vpb_sic_update_pic(vpb_sic_state *s)

{

    int i;

    uint32_t mask;

    for (i = 21; i <= 30; i++) {

        mask = 1u << i;

        if (!(s->pic_enable & mask))

            continue;

        qemu_set_irq(s->parent[i], (s->level & mask) != 0);

    }

}

static void vpb_sic_set_irq(void *opaque, int irq, int level)

{

    vpb_sic_state *s = (vpb_sic_state *)opaque;

    if (level)

        s->level |= 1u << irq;

    else

        s->level &= ~(1u << irq);

    if (s->pic_enable & (1u << irq))

        qemu_set_irq(s->parent[irq], level);

    vpb_sic_update(s);

}

static uint32_t vpb_sic_read(void *opaque, target_phys_addr_t offset)

{

    vpb_sic_state *s = (vpb_sic_state *)opaque;

    offset -= s->base;

    switch (offset >> 2) {

    case 0: /* STATUS */

        return s->level & s->mask;

    case 1: /* RAWSTAT */

        return s->level;

    case 2: /* ENABLE */

        return s->mask;

    case 4: /* SOFTINT */

        return s->level & 1;

    case 8: /* PICENABLE */

        return s->pic_enable;

    default:

        printf ("vpb_sic_read: Bad register offset 0x%x\n", (int)offset);

        return 0;

    }

}

static void vpb_sic_write(void *opaque, target_phys_addr_t offset,

                          uint32_t value)

{

    vpb_sic_state *s = (vpb_sic_state *)opaque;

    offset -= s->base;

    switch (offset >> 2) {

    case 2: /* ENSET */

        s->mask |= value;

        break;

    case 3: /* ENCLR */

        s->mask &= ~value;

        break;

    case 4: /* SOFTINTSET */

        if (value)

            s->mask |= 1;

        break;

    case 5: /* SOFTINTCLR */

        if (value)

            s->mask &= ~1u;

        break;

    case 8: /* PICENSET */

        s->pic_enable |= (value & 0x7fe00000);

        vpb_sic_update_pic(s);

        break;

    case 9: /* PICENCLR */

        s->pic_enable &= ~value;

        vpb_sic_update_pic(s);

        break;

    default:

        printf ("vpb_sic_write: Bad register offset 0x%x\n", (int)offset);

        return;

    }

    vpb_sic_update(s);

}

static CPUReadMemoryFunc *vpb_sic_readfn[] = {

   vpb_sic_read,

   vpb_sic_read,

   vpb_sic_read

};

static CPUWriteMemoryFunc *vpb_sic_writefn[] = {

   vpb_sic_write,

   vpb_sic_write,

   vpb_sic_write

};

static qemu_irq *vpb_sic_init(uint32_t base, qemu_irq *parent, int irq)

{

    vpb_sic_state *s;

    qemu_irq *qi;

    int iomemtype;

    s = (vpb_sic_state *)qemu_mallocz(sizeof(vpb_sic_state));

    if (!s)

        return NULL;

    qi = qemu_allocate_irqs(vpb_sic_set_irq, s, 32);

    s->base = base;

    s->parent = parent;

    s->irq = irq;

    iomemtype = cpu_register_io_memory(0, vpb_sic_readfn,

                                       vpb_sic_writefn, s);

    cpu_register_physical_memory(base, 0x00000fff, iomemtype);

    /* ??? Save/restore.  */

    return qi;

}

/* Board init.  */

/* The AB and PB boards both use the same core, just with different

   peripherans and expansion busses.  For now we emulate a subset of the

   PB peripherals and just change the board ID.  */

static void versatile_init(int ram_size, int vga_ram_size, int boot_device,

                     DisplayState *ds, const char **fd_filename, int snapshot,

                     const char *kernel_filename, const char *kernel_cmdline,

                     const char *initrd_filename, const char *cpu_model,

                     int board_id)

{

    CPUState *env;

    qemu_irq *pic;

    qemu_irq *sic;

    void *scsi_hba;

    PCIBus *pci_bus;

    NICInfo *nd;

    int n;

    int done_smc = 0;

    env = cpu_init();

    if (!cpu_model)

        cpu_model = "arm926";

    cpu_arm_set_model(env, cpu_model);

    /* ??? RAM shoud repeat to fill physical memory space.  */

    /* SDRAM at address zero.  */

    cpu_register_physical_memory(0, ram_size, IO_MEM_RAM);

    arm_sysctl_init(0x10000000, 0x41007004);

    pic = arm_pic_init_cpu(env);

    pic = pl190_init(0x10140000, pic[0], pic[1]);

    sic = vpb_sic_init(0x10003000, pic, 31);

    pl050_init(0x10006000, sic[3], 0);

    pl050_init(0x10007000, sic[4], 1);

    pci_bus = pci_vpb_init(sic, 27, 0);

    /* The Versatile PCI bridge does not provide access to PCI IO space,

       so many of the qemu PCI devices are not useable.  */

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

        nd = &nd_table[n];

        if (!nd->model)

            nd->model = done_smc ? "rtl8139" : "smc91c111";

        if (strcmp(nd->model, "smc91c111") == 0) {

            smc91c111_init(nd, 0x10010000, sic[25]);

        } else {

            pci_nic_init(pci_bus, nd, -1);

        }

    }

    if (usb_enabled) {

        usb_ohci_init_pci(pci_bus, 3, -1);

    }

    scsi_hba = lsi_scsi_init(pci_bus, -1);

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

        if (bs_table[n]) {

            lsi_scsi_attach(scsi_hba, bs_table[n], n);

        }

    }

    pl011_init(0x101f1000, pic[12], serial_hds[0]);

    pl011_init(0x101f2000, pic[13], serial_hds[1]);

    pl011_init(0x101f3000, pic[14], serial_hds[2]);

    pl011_init(0x10009000, sic[6], serial_hds[3]);

    pl080_init(0x10130000, pic[17], 8);

    sp804_init(0x101e2000, pic[4]);

    sp804_init(0x101e3000, pic[5]);

    /* The versatile/PB actually has a modified Color LCD controller

       that includes hardware cursor support from the PL111.  */

    pl110_init(ds, 0x10120000, pic[16], 1);

    pl181_init(0x10005000, sd_bdrv, sic[22], sic[1]);

#if 0

    /* Disabled because there's no way of specifying a block device.  */

    pl181_init(0x1000b000, NULL, sic, 23, 2);

#endif

    /* Memory map for Versatile/PB:  */

    /* 0x10000000 System registers.  */

    /* 0x10001000 PCI controller config registers.  */

    /* 0x10002000 Serial bus interface.  */

    /*  0x10003000 Secondary interrupt controller.  */

    /* 0x10004000 AACI (audio).  */

    /*  0x10005000 MMCI0.  */

    /*  0x10006000 KMI0 (keyboard).  */

    /*  0x10007000 KMI1 (mouse).  */

    /* 0x10008000 Character LCD Interface.  */

    /*  0x10009000 UART3.  */

    /* 0x1000a000 Smart card 1.  */

    /*  0x1000b000 MMCI1.  */

    /*  0x10010000 Ethernet.  */

    /* 0x10020000 USB.  */

    /* 0x10100000 SSMC.  */

    /* 0x10110000 MPMC.  */

    /*  0x10120000 CLCD Controller.  */

    /*  0x10130000 DMA Controller.  */

    /*  0x10140000 Vectored interrupt controller.  */

    /* 0x101d0000 AHB Monitor Interface.  */

    /* 0x101e0000 System Controller.  */

    /* 0x101e1000 Watchdog Interface.  */

    /* 0x101e2000 Timer 0/1.  */

    /* 0x101e3000 Timer 2/3.  */

    /* 0x101e4000 GPIO port 0.  */

    /* 0x101e5000 GPIO port 1.  */

    /* 0x101e6000 GPIO port 2.  */

    /* 0x101e7000 GPIO port 3.  */

    /* 0x101e8000 RTC.  */

    /* 0x101f0000 Smart card 0.  */

    /*  0x101f1000 UART0.  */

    /*  0x101f2000 UART1.  */

    /*  0x101f3000 UART2.  */

    /* 0x101f4000 SSPI.  */

    arm_load_kernel(env, ram_size, kernel_filename, kernel_cmdline,

                    initrd_filename, board_id, 0x0);

}

static void vpb_init(int ram_size, int vga_ram_size, int boot_device,

                     DisplayState *ds, const char **fd_filename, int snapshot,

                     const char *kernel_filename, const char *kernel_cmdline,

                     const char *initrd_filename, const char *cpu_model)

{

    versatile_init(ram_size, vga_ram_size, boot_device,

                   ds, fd_filename, snapshot,

                   kernel_filename, kernel_cmdline,

                   initrd_filename, cpu_model, 0x183);

}

static void vab_init(int ram_size, int vga_ram_size, int boot_device,

                     DisplayState *ds, const char **fd_filename, int snapshot,

                     const char *kernel_filename, const char *kernel_cmdline,

                     const char *initrd_filename, const char *cpu_model)

{

    versatile_init(ram_size, vga_ram_size, boot_device,

                   ds, fd_filename, snapshot,

                   kernel_filename, kernel_cmdline,

                   initrd_filename, cpu_model, 0x25e);

}

QEMUMachine versatilepb_machine = {

    "versatilepb",

    "ARM Versatile/PB (ARM926EJ-S)",

    vpb_init,

};

QEMUMachine versatileab_machine = {

    "versatileab",

    "ARM Versatile/AB (ARM926EJ-S)",

    vab_init,

};