i.MX: Add i.MX6 SOC implementation.

For now we only support the following devices:
* up to 4 Cortex A9 cores
* A9 MPCORE (SCU, GIC, TWD)
* 5 i.MX UARTs
* 2 EPIT timers
* 1 GPT timer
* 3 I2C controllers
* 7 GPIO controllers
* 6 SDHC controllers
* 5 SPI controllers
* 1 CCM device
* 1 SRC device
* various ROM/RAM areas.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

2 files changed, 450 insertions, 0 deletions

diff --git a/hw/arm/Makefile.objs b/hw/arm/Makefile.objs
index 954c9fe15e..2b20e49f4e 100644
--- a/hw/arm/Makefile.objs
+++ b/hw/arm/Makefile.objs
@@ -16,4 +16,5 @@ obj-$(CONFIG_STM32F205_SOC) += stm32f205_soc.o
 obj-$(CONFIG_XLNX_ZYNQMP) += xlnx-zynqmp.o xlnx-ep108.o
 obj-$(CONFIG_FSL_IMX25) += fsl-imx25.o imx25_pdk.o
 obj-$(CONFIG_FSL_IMX31) += fsl-imx31.o kzm.o
+obj-$(CONFIG_FSL_IMX6) += fsl-imx6.o
 obj-$(CONFIG_ASPEED_SOC) += ast2400.o palmetto-bmc.o
diff --git a/hw/arm/fsl-imx6.c b/hw/arm/fsl-imx6.c
new file mode 100644
index 0000000000..a5331bfd33
--- /dev/null
+++ b/hw/arm/fsl-imx6.c
@@ -0,0 +1,449 @@
+/*
+ * Copyright (c) 2015 Jean-Christophe Dubois <jcd@tribudubois.net>
+ *
+ * i.MX6 SOC emulation.
+ *
+ * Based on hw/arm/fsl-imx31.c
+ *
+ *  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 "qemu/osdep.h"
+#include "qapi/error.h"
+#include "qemu-common.h"
+#include "hw/arm/fsl-imx6.h"
+#include "sysemu/sysemu.h"
+#include "sysemu/char.h"
+#include "qemu/error-report.h"
+
+#define NAME_SIZE 20
+
+static void fsl_imx6_init(Object *obj)
+{
+    FslIMX6State *s = FSL_IMX6(obj);
+    char name[NAME_SIZE];
+    int i;
+
+    if (smp_cpus > FSL_IMX6_NUM_CPUS) {
+        error_report("%s: Only %d CPUs are supported (%d requested)",
+                     TYPE_FSL_IMX6, FSL_IMX6_NUM_CPUS, smp_cpus);
+        exit(1);
+    }
+
+    for (i = 0; i < smp_cpus; i++) {
+        object_initialize(&s->cpu[i], sizeof(s->cpu[i]),
+                          "cortex-a9-" TYPE_ARM_CPU);
+        snprintf(name, NAME_SIZE, "cpu%d", i);
+        object_property_add_child(obj, name, OBJECT(&s->cpu[i]), NULL);
+    }
+
+    object_initialize(&s->a9mpcore, sizeof(s->a9mpcore), TYPE_A9MPCORE_PRIV);
+    qdev_set_parent_bus(DEVICE(&s->a9mpcore), sysbus_get_default());
+    object_property_add_child(obj, "a9mpcore", OBJECT(&s->a9mpcore), NULL);
+
+    object_initialize(&s->ccm, sizeof(s->ccm), TYPE_IMX6_CCM);
+    qdev_set_parent_bus(DEVICE(&s->ccm), sysbus_get_default());
+    object_property_add_child(obj, "ccm", OBJECT(&s->ccm), NULL);
+
+    object_initialize(&s->src, sizeof(s->src), TYPE_IMX6_SRC);
+    qdev_set_parent_bus(DEVICE(&s->src), sysbus_get_default());
+    object_property_add_child(obj, "src", OBJECT(&s->src), NULL);
+
+    for (i = 0; i < FSL_IMX6_NUM_UARTS; i++) {
+        object_initialize(&s->uart[i], sizeof(s->uart[i]), TYPE_IMX_SERIAL);
+        qdev_set_parent_bus(DEVICE(&s->uart[i]), sysbus_get_default());
+        snprintf(name, NAME_SIZE, "uart%d", i + 1);
+        object_property_add_child(obj, name, OBJECT(&s->uart[i]), NULL);
+    }
+
+    object_initialize(&s->gpt, sizeof(s->gpt), TYPE_IMX_GPT);
+    qdev_set_parent_bus(DEVICE(&s->gpt), sysbus_get_default());
+    object_property_add_child(obj, "gpt", OBJECT(&s->gpt), NULL);
+
+    for (i = 0; i < FSL_IMX6_NUM_EPITS; i++) {
+        object_initialize(&s->epit[i], sizeof(s->epit[i]), TYPE_IMX_EPIT);
+        qdev_set_parent_bus(DEVICE(&s->epit[i]), sysbus_get_default());
+        snprintf(name, NAME_SIZE, "epit%d", i + 1);
+        object_property_add_child(obj, name, OBJECT(&s->epit[i]), NULL);
+    }
+
+    for (i = 0; i < FSL_IMX6_NUM_I2CS; i++) {
+        object_initialize(&s->i2c[i], sizeof(s->i2c[i]), TYPE_IMX_I2C);
+        qdev_set_parent_bus(DEVICE(&s->i2c[i]), sysbus_get_default());
+        snprintf(name, NAME_SIZE, "i2c%d", i + 1);
+        object_property_add_child(obj, name, OBJECT(&s->i2c[i]), NULL);
+    }
+
+    for (i = 0; i < FSL_IMX6_NUM_GPIOS; i++) {
+        object_initialize(&s->gpio[i], sizeof(s->gpio[i]), TYPE_IMX_GPIO);
+        qdev_set_parent_bus(DEVICE(&s->gpio[i]), sysbus_get_default());
+        snprintf(name, NAME_SIZE, "gpio%d", i + 1);
+        object_property_add_child(obj, name, OBJECT(&s->gpio[i]), NULL);
+    }
+
+    for (i = 0; i < FSL_IMX6_NUM_ESDHCS; i++) {
+        object_initialize(&s->esdhc[i], sizeof(s->esdhc[i]), TYPE_SYSBUS_SDHCI);
+        qdev_set_parent_bus(DEVICE(&s->esdhc[i]), sysbus_get_default());
+        snprintf(name, NAME_SIZE, "sdhc%d", i + 1);
+        object_property_add_child(obj, name, OBJECT(&s->esdhc[i]), NULL);
+    }
+
+    for (i = 0; i < FSL_IMX6_NUM_ECSPIS; i++) {
+        object_initialize(&s->spi[i], sizeof(s->spi[i]), TYPE_IMX_SPI);
+        qdev_set_parent_bus(DEVICE(&s->spi[i]), sysbus_get_default());
+        snprintf(name, NAME_SIZE, "spi%d", i + 1);
+        object_property_add_child(obj, name, OBJECT(&s->spi[i]), NULL);
+    }
+}
+
+static void fsl_imx6_realize(DeviceState *dev, Error **errp)
+{
+    FslIMX6State *s = FSL_IMX6(dev);
+    uint16_t i;
+    Error *err = NULL;
+
+    for (i = 0; i < smp_cpus; i++) {
+
+        /* On uniprocessor, the CBAR is set to 0 */
+        if (smp_cpus > 1) {
+            object_property_set_int(OBJECT(&s->cpu[i]), FSL_IMX6_A9MPCORE_ADDR,
+                                    "reset-cbar", &error_abort);
+        }
+
+        /* All CPU but CPU 0 start in power off mode */
+        if (i) {
+            object_property_set_bool(OBJECT(&s->cpu[i]), true,
+                                     "start-powered-off", &error_abort);
+        }
+
+        object_property_set_bool(OBJECT(&s->cpu[i]), true, "realized", &err);
+        if (err) {
+            error_propagate(errp, err);
+            return;
+        }
+    }
+
+    object_property_set_int(OBJECT(&s->a9mpcore), smp_cpus, "num-cpu",
+                            &error_abort);
+
+    object_property_set_int(OBJECT(&s->a9mpcore),
+                            FSL_IMX6_MAX_IRQ + GIC_INTERNAL, "num-irq",
+                            &error_abort);
+
+    object_property_set_bool(OBJECT(&s->a9mpcore), true, "realized", &err);
+    if (err) {
+        error_propagate(errp, err);
+        return;
+    }
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->a9mpcore), 0, FSL_IMX6_A9MPCORE_ADDR);
+
+    for (i = 0; i < smp_cpus; i++) {
+        sysbus_connect_irq(SYS_BUS_DEVICE(&s->a9mpcore), i,
+                           qdev_get_gpio_in(DEVICE(&s->cpu[i]), ARM_CPU_IRQ));
+        sysbus_connect_irq(SYS_BUS_DEVICE(&s->a9mpcore), i + smp_cpus,
+                           qdev_get_gpio_in(DEVICE(&s->cpu[i]), ARM_CPU_FIQ));
+    }
+
+    object_property_set_bool(OBJECT(&s->ccm), true, "realized", &err);
+    if (err) {
+        error_propagate(errp, err);
+        return;
+    }
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->ccm), 0, FSL_IMX6_CCM_ADDR);
+
+    object_property_set_bool(OBJECT(&s->src), true, "realized", &err);
+    if (err) {
+        error_propagate(errp, err);
+        return;
+    }
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->src), 0, FSL_IMX6_SRC_ADDR);
+
+    /* Initialize all UARTs */
+    for (i = 0; i < FSL_IMX6_NUM_UARTS; i++) {
+        static const struct {
+            hwaddr addr;
+            unsigned int irq;
+        } serial_table[FSL_IMX6_NUM_UARTS] = {
+            { FSL_IMX6_UART1_ADDR, FSL_IMX6_UART1_IRQ },
+            { FSL_IMX6_UART2_ADDR, FSL_IMX6_UART2_IRQ },
+            { FSL_IMX6_UART3_ADDR, FSL_IMX6_UART3_IRQ },
+            { FSL_IMX6_UART4_ADDR, FSL_IMX6_UART4_IRQ },
+            { FSL_IMX6_UART5_ADDR, FSL_IMX6_UART5_IRQ },
+        };
+
+        if (i < MAX_SERIAL_PORTS) {
+            CharDriverState *chr;
+
+            chr = serial_hds[i];
+
+            if (!chr) {
+                char *label = g_strdup_printf("imx6.uart%d", i + 1);
+                chr = qemu_chr_new(label, "null", NULL);
+                g_free(label);
+                serial_hds[i] = chr;
+            }
+
+            qdev_prop_set_chr(DEVICE(&s->uart[i]), "chardev", chr);
+        }
+
+        object_property_set_bool(OBJECT(&s->uart[i]), true, "realized", &err);
+        if (err) {
+            error_propagate(errp, err);
+            return;
+        }
+
+        sysbus_mmio_map(SYS_BUS_DEVICE(&s->uart[i]), 0, serial_table[i].addr);
+        sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart[i]), 0,
+                           qdev_get_gpio_in(DEVICE(&s->a9mpcore),
+                                            serial_table[i].irq));
+    }
+
+    s->gpt.ccm = IMX_CCM(&s->ccm);
+
+    object_property_set_bool(OBJECT(&s->gpt), true, "realized", &err);
+    if (err) {
+        error_propagate(errp, err);
+        return;
+    }
+
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpt), 0, FSL_IMX6_GPT_ADDR);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpt), 0,
+                       qdev_get_gpio_in(DEVICE(&s->a9mpcore),
+                                        FSL_IMX6_GPT_IRQ));
+
+    /* Initialize all EPIT timers */
+    for (i = 0; i < FSL_IMX6_NUM_EPITS; i++) {
+        static const struct {
+            hwaddr addr;
+            unsigned int irq;
+        } epit_table[FSL_IMX6_NUM_EPITS] = {
+            { FSL_IMX6_EPIT1_ADDR, FSL_IMX6_EPIT1_IRQ },
+            { FSL_IMX6_EPIT2_ADDR, FSL_IMX6_EPIT2_IRQ },
+        };
+
+        s->epit[i].ccm = IMX_CCM(&s->ccm);
+
+        object_property_set_bool(OBJECT(&s->epit[i]), true, "realized", &err);
+        if (err) {
+            error_propagate(errp, err);
+            return;
+        }
+
+        sysbus_mmio_map(SYS_BUS_DEVICE(&s->epit[i]), 0, epit_table[i].addr);
+        sysbus_connect_irq(SYS_BUS_DEVICE(&s->epit[i]), 0,
+                           qdev_get_gpio_in(DEVICE(&s->a9mpcore),
+                                            epit_table[i].irq));
+    }
+
+    /* Initialize all I2C */
+    for (i = 0; i < FSL_IMX6_NUM_I2CS; i++) {
+        static const struct {
+            hwaddr addr;
+            unsigned int irq;
+        } i2c_table[FSL_IMX6_NUM_I2CS] = {
+            { FSL_IMX6_I2C1_ADDR, FSL_IMX6_I2C1_IRQ },
+            { FSL_IMX6_I2C2_ADDR, FSL_IMX6_I2C2_IRQ },
+            { FSL_IMX6_I2C3_ADDR, FSL_IMX6_I2C3_IRQ }
+        };
+
+        object_property_set_bool(OBJECT(&s->i2c[i]), true, "realized", &err);
+        if (err) {
+            error_propagate(errp, err);
+            return;
+        }
+
+        sysbus_mmio_map(SYS_BUS_DEVICE(&s->i2c[i]), 0, i2c_table[i].addr);
+        sysbus_connect_irq(SYS_BUS_DEVICE(&s->i2c[i]), 0,
+                           qdev_get_gpio_in(DEVICE(&s->a9mpcore),
+                                            i2c_table[i].irq));
+    }
+
+    /* Initialize all GPIOs */
+    for (i = 0; i < FSL_IMX6_NUM_GPIOS; i++) {
+        static const struct {
+            hwaddr addr;
+            unsigned int irq_low;
+            unsigned int irq_high;
+        } gpio_table[FSL_IMX6_NUM_GPIOS] = {
+            {
+                FSL_IMX6_GPIO1_ADDR,
+                FSL_IMX6_GPIO1_LOW_IRQ,
+                FSL_IMX6_GPIO1_HIGH_IRQ
+            },
+            {
+                FSL_IMX6_GPIO2_ADDR,
+                FSL_IMX6_GPIO2_LOW_IRQ,
+                FSL_IMX6_GPIO2_HIGH_IRQ
+            },
+            {
+                FSL_IMX6_GPIO3_ADDR,
+                FSL_IMX6_GPIO3_LOW_IRQ,
+                FSL_IMX6_GPIO3_HIGH_IRQ
+            },
+            {
+                FSL_IMX6_GPIO4_ADDR,
+                FSL_IMX6_GPIO4_LOW_IRQ,
+                FSL_IMX6_GPIO4_HIGH_IRQ
+            },
+            {
+                FSL_IMX6_GPIO5_ADDR,
+                FSL_IMX6_GPIO5_LOW_IRQ,
+                FSL_IMX6_GPIO5_HIGH_IRQ
+            },
+            {
+                FSL_IMX6_GPIO6_ADDR,
+                FSL_IMX6_GPIO6_LOW_IRQ,
+                FSL_IMX6_GPIO6_HIGH_IRQ
+            },
+            {
+                FSL_IMX6_GPIO7_ADDR,
+                FSL_IMX6_GPIO7_LOW_IRQ,
+                FSL_IMX6_GPIO7_HIGH_IRQ
+            },
+        };
+
+        object_property_set_bool(OBJECT(&s->gpio[i]), true, "has-edge-sel",
+                                 &error_abort);
+        object_property_set_bool(OBJECT(&s->gpio[i]), true, "has-upper-pin-irq",
+                                 &error_abort);
+        object_property_set_bool(OBJECT(&s->gpio[i]), true, "realized", &err);
+        if (err) {
+            error_propagate(errp, err);
+            return;
+        }
+
+        sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpio[i]), 0, gpio_table[i].addr);
+        sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpio[i]), 0,
+                           qdev_get_gpio_in(DEVICE(&s->a9mpcore),
+                                            gpio_table[i].irq_low));
+        sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpio[i]), 1,
+                           qdev_get_gpio_in(DEVICE(&s->a9mpcore),
+                                            gpio_table[i].irq_high));
+    }
+
+    /* Initialize all SDHC */
+    for (i = 0; i < FSL_IMX6_NUM_ESDHCS; i++) {
+        static const struct {
+            hwaddr addr;
+            unsigned int irq;
+        } esdhc_table[FSL_IMX6_NUM_ESDHCS] = {
+            { FSL_IMX6_uSDHC1_ADDR, FSL_IMX6_uSDHC1_IRQ },
+            { FSL_IMX6_uSDHC2_ADDR, FSL_IMX6_uSDHC2_IRQ },
+            { FSL_IMX6_uSDHC3_ADDR, FSL_IMX6_uSDHC3_IRQ },
+            { FSL_IMX6_uSDHC4_ADDR, FSL_IMX6_uSDHC4_IRQ },
+        };
+
+        object_property_set_bool(OBJECT(&s->esdhc[i]), true, "realized", &err);
+        if (err) {
+            error_propagate(errp, err);
+            return;
+        }
+        sysbus_mmio_map(SYS_BUS_DEVICE(&s->esdhc[i]), 0, esdhc_table[i].addr);
+        sysbus_connect_irq(SYS_BUS_DEVICE(&s->esdhc[i]), 0,
+                           qdev_get_gpio_in(DEVICE(&s->a9mpcore),
+                                            esdhc_table[i].irq));
+    }
+
+    /* Initialize all ECSPI */
+    for (i = 0; i < FSL_IMX6_NUM_ECSPIS; i++) {
+        static const struct {
+            hwaddr addr;
+            unsigned int irq;
+        } spi_table[FSL_IMX6_NUM_ECSPIS] = {
+            { FSL_IMX6_eCSPI1_ADDR, FSL_IMX6_ECSPI1_IRQ },
+            { FSL_IMX6_eCSPI2_ADDR, FSL_IMX6_ECSPI2_IRQ },
+            { FSL_IMX6_eCSPI3_ADDR, FSL_IMX6_ECSPI3_IRQ },
+            { FSL_IMX6_eCSPI4_ADDR, FSL_IMX6_ECSPI4_IRQ },
+            { FSL_IMX6_eCSPI5_ADDR, FSL_IMX6_ECSPI5_IRQ },
+        };
+
+        /* Initialize the SPI */
+        object_property_set_bool(OBJECT(&s->spi[i]), true, "realized", &err);
+        if (err) {
+            error_propagate(errp, err);
+            return;
+        }
+
+        sysbus_mmio_map(SYS_BUS_DEVICE(&s->spi[i]), 0, spi_table[i].addr);
+        sysbus_connect_irq(SYS_BUS_DEVICE(&s->spi[i]), 0,
+                           qdev_get_gpio_in(DEVICE(&s->a9mpcore),
+                                            spi_table[i].irq));
+    }
+
+    /* ROM memory */
+    memory_region_init_rom_device(&s->rom, NULL, NULL, NULL, "imx6.rom",
+                                  FSL_IMX6_ROM_SIZE, &err);
+    if (err) {
+        error_propagate(errp, err);
+        return;
+    }
+    memory_region_add_subregion(get_system_memory(), FSL_IMX6_ROM_ADDR,
+                                &s->rom);
+
+    /* CAAM memory */
+    memory_region_init_rom_device(&s->caam, NULL, NULL, NULL, "imx6.caam",
+                                  FSL_IMX6_CAAM_MEM_SIZE, &err);
+    if (err) {
+        error_propagate(errp, err);
+        return;
+    }
+    memory_region_add_subregion(get_system_memory(), FSL_IMX6_CAAM_MEM_ADDR,
+                                &s->caam);
+
+    /* OCRAM memory */
+    memory_region_init_ram(&s->ocram, NULL, "imx6.ocram", FSL_IMX6_OCRAM_SIZE,
+                           &err);
+    if (err) {
+        error_propagate(errp, err);
+        return;
+    }
+    memory_region_add_subregion(get_system_memory(), FSL_IMX6_OCRAM_ADDR,
+                                &s->ocram);
+    vmstate_register_ram_global(&s->ocram);
+
+    /* internal OCRAM (256 KB) is aliased over 1 MB */
+    memory_region_init_alias(&s->ocram_alias, NULL, "imx6.ocram_alias",
+                             &s->ocram, 0, FSL_IMX6_OCRAM_ALIAS_SIZE);
+    memory_region_add_subregion(get_system_memory(), FSL_IMX6_OCRAM_ALIAS_ADDR,
+                                &s->ocram_alias);
+}
+
+static void fsl_imx6_class_init(ObjectClass *oc, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(oc);
+
+    dc->realize = fsl_imx6_realize;
+
+    /*
+     * Reason: creates an ARM CPU, thus use after free(), see
+     * arm_cpu_class_init()
+     */
+    dc->cannot_destroy_with_object_finalize_yet = true;
+    dc->desc = "i.MX6 SOC";
+}
+
+static const TypeInfo fsl_imx6_type_info = {
+    .name = TYPE_FSL_IMX6,
+    .parent = TYPE_DEVICE,
+    .instance_size = sizeof(FslIMX6State),
+    .instance_init = fsl_imx6_init,
+    .class_init = fsl_imx6_class_init,
+};
+
+static void fsl_imx6_register_types(void)
+{
+    type_register_static(&fsl_imx6_type_info);
+}
+
+type_init(fsl_imx6_register_types)