Archipelago » qemu

/*

 *  QEMU models for LatticeMico32 uclinux and evr32 boards.

 *

 *  Copyright (c) 2010 Michael Walle <michael@walle.cc>

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, see <http://www.gnu.org/licenses/>.

 */

#include "sysbus.h"

#include "hw.h"

#include "flash.h"

#include "devices.h"

#include "boards.h"

#include "loader.h"

#include "sysemu/blockdev.h"

#include "elf.h"

#include "lm32_hwsetup.h"

#include "lm32.h"

#include "exec/address-spaces.h"

typedef struct {

    LM32CPU *cpu;

    hwaddr bootstrap_pc;

    hwaddr flash_base;

    hwaddr hwsetup_base;

    hwaddr initrd_base;

    size_t initrd_size;

    hwaddr cmdline_base;

} ResetInfo;

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

{

    CPULM32State *env = opaque;

    if (level) {

        cpu_interrupt(env, CPU_INTERRUPT_HARD);

    } else {

        cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);

    }

}

static void main_cpu_reset(void *opaque)

{

    ResetInfo *reset_info = opaque;

    CPULM32State *env = &reset_info->cpu->env;

    cpu_reset(CPU(reset_info->cpu));

    /* init defaults */

    env->pc = (uint32_t)reset_info->bootstrap_pc;

    env->regs[R_R1] = (uint32_t)reset_info->hwsetup_base;

    env->regs[R_R2] = (uint32_t)reset_info->cmdline_base;

    env->regs[R_R3] = (uint32_t)reset_info->initrd_base;

    env->regs[R_R4] = (uint32_t)(reset_info->initrd_base +

        reset_info->initrd_size);

    env->eba = reset_info->flash_base;

    env->deba = reset_info->flash_base;

}

static void lm32_evr_init(QEMUMachineInitArgs *args)

{

    const char *cpu_model = args->cpu_model;

    const char *kernel_filename = args->kernel_filename;

    LM32CPU *cpu;

    CPULM32State *env;

    DriveInfo *dinfo;

    MemoryRegion *address_space_mem =  get_system_memory();

    MemoryRegion *phys_ram = g_new(MemoryRegion, 1);

    qemu_irq *cpu_irq, irq[32];

    ResetInfo *reset_info;

    int i;

    /* memory map */

    hwaddr flash_base  = 0x04000000;

    size_t flash_sector_size       = 256 * 1024;

    size_t flash_size              = 32 * 1024 * 1024;

    hwaddr ram_base    = 0x08000000;

    size_t ram_size                = 64 * 1024 * 1024;

    hwaddr timer0_base = 0x80002000;

    hwaddr uart0_base  = 0x80006000;

    hwaddr timer1_base = 0x8000a000;

    int uart0_irq                  = 0;

    int timer0_irq                 = 1;

    int timer1_irq                 = 3;

    reset_info = g_malloc0(sizeof(ResetInfo));

    if (cpu_model == NULL) {

        cpu_model = "lm32-full";

    }

    cpu = cpu_lm32_init(cpu_model);

    env = &cpu->env;

    reset_info->cpu = cpu;

    reset_info->flash_base = flash_base;

    memory_region_init_ram(phys_ram, "lm32_evr.sdram", ram_size);

    vmstate_register_ram_global(phys_ram);

    memory_region_add_subregion(address_space_mem, ram_base, phys_ram);

    dinfo = drive_get(IF_PFLASH, 0, 0);

    /* Spansion S29NS128P */

    pflash_cfi02_register(flash_base, NULL, "lm32_evr.flash", flash_size,

                          dinfo ? dinfo->bdrv : NULL, flash_sector_size,

                          flash_size / flash_sector_size, 1, 2,

                          0x01, 0x7e, 0x43, 0x00, 0x555, 0x2aa, 1);

    /* create irq lines */

    cpu_irq = qemu_allocate_irqs(cpu_irq_handler, env, 1);

    env->pic_state = lm32_pic_init(*cpu_irq);

    for (i = 0; i < 32; i++) {

        irq[i] = qdev_get_gpio_in(env->pic_state, i);

    }

    sysbus_create_simple("lm32-uart", uart0_base, irq[uart0_irq]);

    sysbus_create_simple("lm32-timer", timer0_base, irq[timer0_irq]);

    sysbus_create_simple("lm32-timer", timer1_base, irq[timer1_irq]);

    /* make sure juart isn't the first chardev */

    env->juart_state = lm32_juart_init();

    reset_info->bootstrap_pc = flash_base;

    if (kernel_filename) {

        uint64_t entry;

        int kernel_size;

        kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL,

                               1, ELF_MACHINE, 0);

        reset_info->bootstrap_pc = entry;

        if (kernel_size < 0) {

            kernel_size = load_image_targphys(kernel_filename, ram_base,

                                              ram_size);

            reset_info->bootstrap_pc = ram_base;

        }

        if (kernel_size < 0) {

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

                    kernel_filename);

            exit(1);

        }

    }

    qemu_register_reset(main_cpu_reset, reset_info);

}

static void lm32_uclinux_init(QEMUMachineInitArgs *args)

{

    const char *cpu_model = args->cpu_model;

    const char *kernel_filename = args->kernel_filename;

    const char *kernel_cmdline = args->kernel_cmdline;

    const char *initrd_filename = args->initrd_filename;

    LM32CPU *cpu;

    CPULM32State *env;

    DriveInfo *dinfo;

    MemoryRegion *address_space_mem =  get_system_memory();

    MemoryRegion *phys_ram = g_new(MemoryRegion, 1);

    qemu_irq *cpu_irq, irq[32];

    HWSetup *hw;

    ResetInfo *reset_info;

    int i;

    /* memory map */

    hwaddr flash_base   = 0x04000000;

    size_t flash_sector_size        = 256 * 1024;

    size_t flash_size               = 32 * 1024 * 1024;

    hwaddr ram_base     = 0x08000000;

    size_t ram_size                 = 64 * 1024 * 1024;

    hwaddr uart0_base   = 0x80000000;

    hwaddr timer0_base  = 0x80002000;

    hwaddr timer1_base  = 0x80010000;

    hwaddr timer2_base  = 0x80012000;

    int uart0_irq                   = 0;

    int timer0_irq                  = 1;

    int timer1_irq                  = 20;

    int timer2_irq                  = 21;

    hwaddr hwsetup_base = 0x0bffe000;

    hwaddr cmdline_base = 0x0bfff000;

    hwaddr initrd_base  = 0x08400000;

    size_t initrd_max               = 0x01000000;

    reset_info = g_malloc0(sizeof(ResetInfo));

    if (cpu_model == NULL) {

        cpu_model = "lm32-full";

    }

    cpu = cpu_lm32_init(cpu_model);

    env = &cpu->env;

    reset_info->cpu = cpu;

    reset_info->flash_base = flash_base;

    memory_region_init_ram(phys_ram, "lm32_uclinux.sdram", ram_size);

    vmstate_register_ram_global(phys_ram);

    memory_region_add_subregion(address_space_mem, ram_base, phys_ram);

    dinfo = drive_get(IF_PFLASH, 0, 0);

    /* Spansion S29NS128P */

    pflash_cfi02_register(flash_base, NULL, "lm32_uclinux.flash", flash_size,

                          dinfo ? dinfo->bdrv : NULL, flash_sector_size,

                          flash_size / flash_sector_size, 1, 2,

                          0x01, 0x7e, 0x43, 0x00, 0x555, 0x2aa, 1);

    /* create irq lines */

    cpu_irq = qemu_allocate_irqs(cpu_irq_handler, env, 1);

    env->pic_state = lm32_pic_init(*cpu_irq);

    for (i = 0; i < 32; i++) {

        irq[i] = qdev_get_gpio_in(env->pic_state, i);

    }

    sysbus_create_simple("lm32-uart", uart0_base, irq[uart0_irq]);

    sysbus_create_simple("lm32-timer", timer0_base, irq[timer0_irq]);

    sysbus_create_simple("lm32-timer", timer1_base, irq[timer1_irq]);

    sysbus_create_simple("lm32-timer", timer2_base, irq[timer2_irq]);

    /* make sure juart isn't the first chardev */

    env->juart_state = lm32_juart_init();

    reset_info->bootstrap_pc = flash_base;

    if (kernel_filename) {

        uint64_t entry;

        int kernel_size;

        kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL,

                               1, ELF_MACHINE, 0);

        reset_info->bootstrap_pc = entry;

        if (kernel_size < 0) {

            kernel_size = load_image_targphys(kernel_filename, ram_base,

                                              ram_size);

            reset_info->bootstrap_pc = ram_base;

        }

        if (kernel_size < 0) {

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

                    kernel_filename);

            exit(1);

        }

    }

    /* generate a rom with the hardware description */

    hw = hwsetup_init();

    hwsetup_add_cpu(hw, "LM32", 75000000);

    hwsetup_add_flash(hw, "flash", flash_base, flash_size);

    hwsetup_add_ddr_sdram(hw, "ddr_sdram", ram_base, ram_size);

    hwsetup_add_timer(hw, "timer0", timer0_base, timer0_irq);

    hwsetup_add_timer(hw, "timer1_dev_only", timer1_base, timer1_irq);

    hwsetup_add_timer(hw, "timer2_dev_only", timer2_base, timer2_irq);

    hwsetup_add_uart(hw, "uart", uart0_base, uart0_irq);

    hwsetup_add_trailer(hw);

    hwsetup_create_rom(hw, hwsetup_base);

    hwsetup_free(hw);

    reset_info->hwsetup_base = hwsetup_base;

    if (kernel_cmdline && strlen(kernel_cmdline)) {

        pstrcpy_targphys("cmdline", cmdline_base, TARGET_PAGE_SIZE,

                kernel_cmdline);

        reset_info->cmdline_base = cmdline_base;

    }

    if (initrd_filename) {

        size_t initrd_size;

        initrd_size = load_image_targphys(initrd_filename, initrd_base,

                initrd_max);

        reset_info->initrd_base = initrd_base;

        reset_info->initrd_size = initrd_size;

    }

    qemu_register_reset(main_cpu_reset, reset_info);

}

static QEMUMachine lm32_evr_machine = {

    .name = "lm32-evr",

    .desc = "LatticeMico32 EVR32 eval system",

    .init = lm32_evr_init,

    .is_default = 1

};

static QEMUMachine lm32_uclinux_machine = {

    .name = "lm32-uclinux",

    .desc = "lm32 platform for uClinux and u-boot by Theobroma Systems",

    .init = lm32_uclinux_init,

    .is_default = 0

};

static void lm32_machine_init(void)

{

    qemu_register_machine(&lm32_uclinux_machine);

    qemu_register_machine(&lm32_evr_machine);

}

machine_init(lm32_machine_init);