Archipelago » qemu

/*

 * Arnewsh 5206 ColdFire system emulation.

 *

 * Copyright (c) 2007 CodeSourcery.

 *

 * This code is licenced under the GPL

 */

#include "hw.h"

#include "mcf.h"

#include "sysemu.h"

#include "boards.h"

#define KERNEL_LOAD_ADDR 0x10000

#define AN5206_MBAR_ADDR 0x10000000

#define AN5206_RAMBAR_ADDR 0x20000000

/* Stub functions for hardware that doesn't exist.  */

void pic_info(void)

{

}

void irq_info(void)

{

}

/* Board init.  */

static void an5206_init(ram_addr_t ram_size, int vga_ram_size,

                     const char *boot_device,

                     const char *kernel_filename, const char *kernel_cmdline,

                     const char *initrd_filename, const char *cpu_model)

{

    CPUState *env;

    int kernel_size;

    uint64_t elf_entry;

    target_ulong entry;

    if (!cpu_model)

        cpu_model = "m5206";

    env = cpu_init(cpu_model);

    if (!env) {

        cpu_abort(env, "Unable to find m68k CPU definition\n");

    }

    /* Initialize CPU registers.  */

    env->vbr = 0;

    /* TODO: allow changing MBAR and RAMBAR.  */

    env->mbar = AN5206_MBAR_ADDR | 1;

    env->rambar0 = AN5206_RAMBAR_ADDR | 1;

    /* DRAM at address zero */

    cpu_register_physical_memory(0, ram_size,

        qemu_ram_alloc(ram_size) | IO_MEM_RAM);

    /* Internal SRAM.  */

    cpu_register_physical_memory(AN5206_RAMBAR_ADDR, 512,

        qemu_ram_alloc(512) | IO_MEM_RAM);

    mcf5206_init(AN5206_MBAR_ADDR, env);

    /* Load kernel.  */

    if (!kernel_filename) {

        fprintf(stderr, "Kernel image must be specified\n");

        exit(1);

    }

    kernel_size = load_elf(kernel_filename, 0, &elf_entry, NULL, NULL);

    entry = elf_entry;

    if (kernel_size < 0) {

        kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL);

    }

    if (kernel_size < 0) {

        kernel_size = load_image(kernel_filename,

                                 phys_ram_base + KERNEL_LOAD_ADDR);

        entry = KERNEL_LOAD_ADDR;

    }

    if (kernel_size < 0) {

        fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);

        exit(1);

    }

    env->pc = entry;

}

QEMUMachine an5206_machine = {

    .name = "an5206",

    .desc = "Arnewsh 5206",

    .init = an5206_init,

    .ram_require = 512,

};