Archipelago » qemu

/*

 * QEMU ETRAX System Emulator

 *

 * Copyright (c) 2007 Edgar E. Iglesias, Axis Communications AB.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 */

#include <time.h>

#include <sys/time.h>

#include "hw.h"

#include "sysemu.h"

#include "flash.h"

#include "boards.h"

static void main_cpu_reset(void *opaque)

{

    CPUState *env = opaque;

    cpu_reset(env);

}

/* Init functions for different blocks.  */

extern qemu_irq *etraxfs_pic_init(CPUState *env, target_phys_addr_t base);

void etraxfs_timer_init(CPUState *env, qemu_irq *irqs, 

                        target_phys_addr_t base);

void etraxfs_ser_init(CPUState *env, qemu_irq *irq, CharDriverState *chr,

                      target_phys_addr_t base);

#define FLASH_SIZE 0x2000000

#define INTMEM_SIZE (128 * 1024)

static

void bareetraxfs_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;

    qemu_irq *pic;

    int kernel_size;

    int index;

    ram_addr_t phys_ram;

    ram_addr_t phys_intmem;

    /* init CPUs */

    if (cpu_model == NULL) {

        cpu_model = "crisv32";

    }

    env = cpu_init(cpu_model);

/*    register_savevm("cpu", 0, 3, cpu_save, cpu_load, env); */

    qemu_register_reset(main_cpu_reset, env);

    /* allocate RAM */

    phys_ram = qemu_ram_alloc(ram_size);

    cpu_register_physical_memory(0x40000000, ram_size, phys_ram | IO_MEM_RAM);

    /* Unached mapping.  */

    cpu_register_physical_memory(0xc0000000, ram_size, phys_ram | IO_MEM_RAM);

    /* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the 

       internal memory. Cached and uncached mappings.  */

    phys_intmem = qemu_ram_alloc(INTMEM_SIZE);

    cpu_register_physical_memory(0xb8000000, INTMEM_SIZE, 

                                 phys_intmem | IO_MEM_RAM);

    cpu_register_physical_memory(0x38000000, INTMEM_SIZE, 

                                 phys_intmem | IO_MEM_RAM);

    cpu_register_physical_memory(0, FLASH_SIZE, IO_MEM_ROM);

    cpu_register_physical_memory(0x80000000, FLASH_SIZE, IO_MEM_ROM);

    cpu_register_physical_memory(0x04000000, FLASH_SIZE, IO_MEM_ROM);

    cpu_register_physical_memory(0x84000000, FLASH_SIZE, 

                                 0x04000000 | IO_MEM_ROM);

    index = drive_get_index(IF_PFLASH, 0, 0);

    pflash_cfi01_register(0x80000000, FLASH_SIZE,

                          drives_table[index].bdrv, 65536, FLASH_SIZE >> 16,

                          4, 0x0000, 0x0000, 0x0000, 0x0000);

    pic = etraxfs_pic_init(env, 0xb001c000);

    /* 2 timers.  */

    etraxfs_timer_init(env, pic + 26, 0xb001e000);

    etraxfs_timer_init(env, pic + 26, 0xb005e000);

    /* 4 serial ports.  */

    etraxfs_ser_init(env, pic + 19, serial_hds[0], 0xb0026000);

    if (serial_hds[1])

            etraxfs_ser_init(env, pic + 20, serial_hds[1], 0xb0028000);

    if (serial_hds[2])

            etraxfs_ser_init(env, pic + 21, serial_hds[2], 0xb002a000);

    if (serial_hds[3])

            etraxfs_ser_init(env, pic + 22, serial_hds[3], 0xb002c000);

#if 1

    /* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis devboard

       SDK.  */

    kernel_size = load_elf(kernel_filename, 0, &env->pc, NULL, NULL);

#else

    /* Takes a kimage from the axis devboard SDK.  */

    kernel_size = load_image(kernel_filename, phys_ram_base + 0x4000);

    env->pc = 0x40004000;

#endif

    /* magic for boot.  */

    env->regs[8] = 0x56902387;

    env->regs[9] = 0x40004000 + kernel_size;

    {

       unsigned char *ptr = phys_ram_base + 0x4000;

       int i;

       for (i = 0; i < 8; i++)

       {

                printf ("%2.2x ", ptr[i]);

       }

        printf("\n");

    }

    printf ("pc =%x\n", env->pc);

    printf ("ram size =%d\n", ram_size);

    printf ("kernel name =%s\n", kernel_filename);

    printf ("kernel size =%d\n", kernel_size);

    printf ("cpu haltd =%d\n", env->halted);

}

void DMA_run(void)

{

}

QEMUMachine bareetraxfs_machine = {

    "bareetraxfs",

    "Bare ETRAX FS board",

    bareetraxfs_init,

    0x800000,

};