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/*

 *  Samsung exynos4210 SoC emulation

 *

 *  Copyright (c) 2011 Samsung Electronics Co., Ltd. All rights reserved.

 *    Maksim Kozlov <m.kozlov@samsung.com>

 *    Evgeny Voevodin <e.voevodin@samsung.com>

 *    Igor Mitsyanko  <i.mitsyanko@samsung.com>

 *

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

 *  under the terms of the GNU General Public License as published by the

 *  Free Software Foundation; either version 2 of the License, or

 *  (at your option) any later version.

 *

 *  This program 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 General Public License

 *  for more details.

 *

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

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

 *

 */

#include "boards.h"

#include "sysemu.h"

#include "sysbus.h"

#include "arm-misc.h"

#include "exynos4210.h"

#define EXYNOS4210_CHIPID_ADDR         0x10000000

/* PWM */

#define EXYNOS4210_PWM_BASE_ADDR       0x139D0000

/* MCT */

#define EXYNOS4210_MCT_BASE_ADDR       0x10050000

/* UART's definitions */

#define EXYNOS4210_UART0_BASE_ADDR     0x13800000

#define EXYNOS4210_UART1_BASE_ADDR     0x13810000

#define EXYNOS4210_UART2_BASE_ADDR     0x13820000

#define EXYNOS4210_UART3_BASE_ADDR     0x13830000

#define EXYNOS4210_UART0_FIFO_SIZE     256

#define EXYNOS4210_UART1_FIFO_SIZE     64

#define EXYNOS4210_UART2_FIFO_SIZE     16

#define EXYNOS4210_UART3_FIFO_SIZE     16

/* Interrupt Group of External Interrupt Combiner for UART */

#define EXYNOS4210_UART_INT_GRP        26

/* External GIC */

#define EXYNOS4210_EXT_GIC_CPU_BASE_ADDR    0x10480000

#define EXYNOS4210_EXT_GIC_DIST_BASE_ADDR   0x10490000

/* Combiner */

#define EXYNOS4210_EXT_COMBINER_BASE_ADDR   0x10440000

#define EXYNOS4210_INT_COMBINER_BASE_ADDR   0x10448000

/* PMU SFR base address */

#define EXYNOS4210_PMU_BASE_ADDR            0x10020000

/* Display controllers (FIMD) */

#define EXYNOS4210_FIMD0_BASE_ADDR          0x11C00000

static uint8_t chipid_and_omr[] = { 0x11, 0x02, 0x21, 0x43,

                                    0x09, 0x00, 0x00, 0x00 };

Exynos4210State *exynos4210_init(MemoryRegion *system_mem,

        unsigned long ram_size)

{

    qemu_irq cpu_irq[4];

    int n;

    Exynos4210State *s = g_new(Exynos4210State, 1);

    qemu_irq *irqp;

    qemu_irq gate_irq[EXYNOS4210_IRQ_GATE_NINPUTS];

    unsigned long mem_size;

    DeviceState *dev;

    SysBusDevice *busdev;

    for (n = 0; n < EXYNOS4210_NCPUS; n++) {

        s->env[n] = cpu_init("cortex-a9");

        if (!s->env[n]) {

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

            exit(1);

        }

        /* Create PIC controller for each processor instance */

        irqp = arm_pic_init_cpu(s->env[n]);

        /*

         * Get GICs gpio_in cpu_irq to connect a combiner to them later.

         * Use only IRQ for a while.

         */

        cpu_irq[n] = irqp[ARM_PIC_CPU_IRQ];

    }

    /*** IRQs ***/

    s->irq_table = exynos4210_init_irq(&s->irqs);

    /* IRQ Gate */

    dev = qdev_create(NULL, "exynos4210.irq_gate");

    qdev_init_nofail(dev);

    /* Get IRQ Gate input in gate_irq */

    for (n = 0; n < EXYNOS4210_IRQ_GATE_NINPUTS; n++) {

        gate_irq[n] = qdev_get_gpio_in(dev, n);

    }

    busdev = sysbus_from_qdev(dev);

    /* Connect IRQ Gate output to cpu_irq */

    for (n = 0; n < EXYNOS4210_NCPUS; n++) {

        sysbus_connect_irq(busdev, n, cpu_irq[n]);

    }

    /* Private memory region and Internal GIC */

    dev = qdev_create(NULL, "a9mpcore_priv");

    qdev_prop_set_uint32(dev, "num-cpu", EXYNOS4210_NCPUS);

    qdev_init_nofail(dev);

    busdev = sysbus_from_qdev(dev);

    sysbus_mmio_map(busdev, 0, EXYNOS4210_SMP_PRIVATE_BASE_ADDR);

    for (n = 0; n < EXYNOS4210_NCPUS; n++) {

        sysbus_connect_irq(busdev, n, gate_irq[n * 2]);

    }

    for (n = 0; n < EXYNOS4210_INT_GIC_NIRQ; n++) {

        s->irqs.int_gic_irq[n] = qdev_get_gpio_in(dev, n);

    }

    /* Cache controller */

    sysbus_create_simple("l2x0", EXYNOS4210_L2X0_BASE_ADDR, NULL);

    /* External GIC */

    dev = qdev_create(NULL, "exynos4210.gic");

    qdev_prop_set_uint32(dev, "num-cpu", EXYNOS4210_NCPUS);

    qdev_init_nofail(dev);

    busdev = sysbus_from_qdev(dev);

    /* Map CPU interface */

    sysbus_mmio_map(busdev, 0, EXYNOS4210_EXT_GIC_CPU_BASE_ADDR);

    /* Map Distributer interface */

    sysbus_mmio_map(busdev, 1, EXYNOS4210_EXT_GIC_DIST_BASE_ADDR);

    for (n = 0; n < EXYNOS4210_NCPUS; n++) {

        sysbus_connect_irq(busdev, n, gate_irq[n * 2 + 1]);

    }

    for (n = 0; n < EXYNOS4210_EXT_GIC_NIRQ; n++) {

        s->irqs.ext_gic_irq[n] = qdev_get_gpio_in(dev, n);

    }

    /* Internal Interrupt Combiner */

    dev = qdev_create(NULL, "exynos4210.combiner");

    qdev_init_nofail(dev);

    busdev = sysbus_from_qdev(dev);

    for (n = 0; n < EXYNOS4210_MAX_INT_COMBINER_OUT_IRQ; n++) {

        sysbus_connect_irq(busdev, n, s->irqs.int_gic_irq[n]);

    }

    exynos4210_combiner_get_gpioin(&s->irqs, dev, 0);

    sysbus_mmio_map(busdev, 0, EXYNOS4210_INT_COMBINER_BASE_ADDR);

    /* External Interrupt Combiner */

    dev = qdev_create(NULL, "exynos4210.combiner");

    qdev_prop_set_uint32(dev, "external", 1);

    qdev_init_nofail(dev);

    busdev = sysbus_from_qdev(dev);

    for (n = 0; n < EXYNOS4210_MAX_INT_COMBINER_OUT_IRQ; n++) {

        sysbus_connect_irq(busdev, n, s->irqs.ext_gic_irq[n]);

    }

    exynos4210_combiner_get_gpioin(&s->irqs, dev, 1);

    sysbus_mmio_map(busdev, 0, EXYNOS4210_EXT_COMBINER_BASE_ADDR);

    /* Initialize board IRQs. */

    exynos4210_init_board_irqs(&s->irqs);

    /*** Memory ***/

    /* Chip-ID and OMR */

    memory_region_init_ram_ptr(&s->chipid_mem, "exynos4210.chipid",

            sizeof(chipid_and_omr), chipid_and_omr);

    memory_region_set_readonly(&s->chipid_mem, true);

    memory_region_add_subregion(system_mem, EXYNOS4210_CHIPID_ADDR,

                                &s->chipid_mem);

    /* Internal ROM */

    memory_region_init_ram(&s->irom_mem, "exynos4210.irom",

                           EXYNOS4210_IROM_SIZE);

    memory_region_set_readonly(&s->irom_mem, true);

    memory_region_add_subregion(system_mem, EXYNOS4210_IROM_BASE_ADDR,

                                &s->irom_mem);

    /* mirror of iROM */

    memory_region_init_alias(&s->irom_alias_mem, "exynos4210.irom_alias",

                             &s->irom_mem,

                             EXYNOS4210_IROM_BASE_ADDR,

                             EXYNOS4210_IROM_SIZE);

    memory_region_set_readonly(&s->irom_alias_mem, true);

    memory_region_add_subregion(system_mem, EXYNOS4210_IROM_MIRROR_BASE_ADDR,

                                &s->irom_alias_mem);

    /* Internal RAM */

    memory_region_init_ram(&s->iram_mem, "exynos4210.iram",

                           EXYNOS4210_IRAM_SIZE);

    vmstate_register_ram_global(&s->iram_mem);

    memory_region_add_subregion(system_mem, EXYNOS4210_IRAM_BASE_ADDR,

                                &s->iram_mem);

    /* DRAM */

    mem_size = ram_size;

    if (mem_size > EXYNOS4210_DRAM_MAX_SIZE) {

        memory_region_init_ram(&s->dram1_mem, "exynos4210.dram1",

                mem_size - EXYNOS4210_DRAM_MAX_SIZE);

        vmstate_register_ram_global(&s->dram1_mem);

        memory_region_add_subregion(system_mem, EXYNOS4210_DRAM1_BASE_ADDR,

                &s->dram1_mem);

        mem_size = EXYNOS4210_DRAM_MAX_SIZE;

    }

    memory_region_init_ram(&s->dram0_mem, "exynos4210.dram0", mem_size);

    vmstate_register_ram_global(&s->dram0_mem);

    memory_region_add_subregion(system_mem, EXYNOS4210_DRAM0_BASE_ADDR,

            &s->dram0_mem);

   /* PMU.

    * The only reason of existence at the moment is that secondary CPU boot

    * loader uses PMU INFORM5 register as a holding pen.

    */

    sysbus_create_simple("exynos4210.pmu", EXYNOS4210_PMU_BASE_ADDR, NULL);

    /* PWM */

    sysbus_create_varargs("exynos4210.pwm", EXYNOS4210_PWM_BASE_ADDR,

                          s->irq_table[exynos4210_get_irq(22, 0)],

                          s->irq_table[exynos4210_get_irq(22, 1)],

                          s->irq_table[exynos4210_get_irq(22, 2)],

                          s->irq_table[exynos4210_get_irq(22, 3)],

                          s->irq_table[exynos4210_get_irq(22, 4)],

                          NULL);

    /* Multi Core Timer */

    dev = qdev_create(NULL, "exynos4210.mct");

    qdev_init_nofail(dev);

    busdev = sysbus_from_qdev(dev);

    for (n = 0; n < 4; n++) {

        /* Connect global timer interrupts to Combiner gpio_in */

        sysbus_connect_irq(busdev, n,

                s->irq_table[exynos4210_get_irq(1, 4 + n)]);

    }

    /* Connect local timer interrupts to Combiner gpio_in */

    sysbus_connect_irq(busdev, 4,

            s->irq_table[exynos4210_get_irq(51, 0)]);

    sysbus_connect_irq(busdev, 5,

            s->irq_table[exynos4210_get_irq(35, 3)]);

    sysbus_mmio_map(busdev, 0, EXYNOS4210_MCT_BASE_ADDR);

    /*** UARTs ***/

    exynos4210_uart_create(EXYNOS4210_UART0_BASE_ADDR,

                           EXYNOS4210_UART0_FIFO_SIZE, 0, NULL,

                  s->irq_table[exynos4210_get_irq(EXYNOS4210_UART_INT_GRP, 0)]);

    exynos4210_uart_create(EXYNOS4210_UART1_BASE_ADDR,

                           EXYNOS4210_UART1_FIFO_SIZE, 1, NULL,

                  s->irq_table[exynos4210_get_irq(EXYNOS4210_UART_INT_GRP, 1)]);

    exynos4210_uart_create(EXYNOS4210_UART2_BASE_ADDR,

                           EXYNOS4210_UART2_FIFO_SIZE, 2, NULL,

                  s->irq_table[exynos4210_get_irq(EXYNOS4210_UART_INT_GRP, 2)]);

    exynos4210_uart_create(EXYNOS4210_UART3_BASE_ADDR,

                           EXYNOS4210_UART3_FIFO_SIZE, 3, NULL,

                  s->irq_table[exynos4210_get_irq(EXYNOS4210_UART_INT_GRP, 3)]);

    /*** Display controller (FIMD) ***/

    sysbus_create_varargs("exynos4210.fimd", EXYNOS4210_FIMD0_BASE_ADDR,

            s->irq_table[exynos4210_get_irq(11, 0)],

            s->irq_table[exynos4210_get_irq(11, 1)],

            s->irq_table[exynos4210_get_irq(11, 2)],

            NULL);

    return s;

}