/*

 * Dummy board with just RAM and CPU for use as an ISS.

 *

 * Copyright (c) 2007 CodeSourcery.

 *

 * This code is licenced under the GPL

 */

#include "hw.h"

#include "sysemu.h"

#include "boards.h"

#include "ppc.h"

/* Board init.  */

static void dummy_ppc_init(ram_addr_t ram_size, int vga_ram_size,

                     const char *boot_device, DisplayState *ds,

                     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 = "default";

    env = cpu_init(cpu_model);

    if (!env) {

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

        exit(1);

    }

    cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);

    /* RAM at address zero */

    cpu_register_physical_memory(0x10000000, ram_size,

        qemu_ram_alloc(ram_size) | IO_MEM_RAM);

    /* Load kernel.  */

    if (kernel_filename) {

        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);

            entry = 0;

        }

        if (kernel_size < 0) {

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

                    kernel_filename);

            exit(1);

        }

    } else {

        entry = 0;

    }

    env->nip = entry;

    if (semihosting_enabled) {

        /* Setup initial stack.  */

        target_ulong *p;

        p = (target_ulong *)(phys_ram_base + ram_size);

        *(--p) = 0;

        *(--p) = 0;

        env->gpr[1] = 0x10000000 + ram_size - 2 * sizeof(target_ulong);

        /* Enable FPU.  */

        env->msr |= (1 << MSR_FP);

    }

}

QEMUMachine dummy_ppc_machine = {

    .name = "dummy",

    .desc = "Dummy board",

    .init = dummy_ppc_init,

    .max_cpus = 1

};