aspeed/soc: Add AST2700 support

Initial definitions for a simple machine using an AST2700 SOC (Cortex-a35 CPU).

AST2700 SOC and its interrupt controller are too complex to handle
in the common Aspeed SoC framework. We introduce a new ast2700
class with instance_init and realize handlers.

AST2700 is a 64 bits quad core cpus and support 8 watchdog.
Update maximum ASPEED_CPUS_NUM to 4 and ASPEED_WDTS_NUM to 8.
In addition, update AspeedSocState to support scuio, sli, sliio and intc.

Add TYPE_ASPEED27X0_SOC machine type.

The SDMC controller is unlocked at SPL stage.
At present, only supports to emulate booting
start from u-boot stage. Set SDMC controller
unlocked by default.

In INTC, each interrupt of INT 128 to INT 136 combines 32 interrupts.
It connect GICINT IRQ GPIO-OUTPUT pins to GIC device with irq 128 to 136.
And, if a device irq is 128 to 136, its irq GPIO-OUTPUT pin is connected to
GICINT or-gates instead of GIC device.

Signed-off-by: Troy Lee <troy_lee@aspeedtech.com>
Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>

2 files changed, 564 insertions, 0 deletions

diff --git a/hw/arm/aspeed_ast27x0.c b/hw/arm/aspeed_ast27x0.c
new file mode 100644
index 0000000..29e7507
--- /dev/null
+++ b/hw/arm/aspeed_ast27x0.c
@@ -0,0 +1,563 @@
+/*
+ * ASPEED SoC 27x0 family
+ *
+ * Copyright (C) 2024 ASPEED Technology Inc.
+ *
+ * This code is licensed under the GPL version 2 or later.  See
+ * the COPYING file in the top-level directory.
+ *
+ * Implementation extracted from the AST2600 and adapted for AST27x0.
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "hw/misc/unimp.h"
+#include "hw/arm/aspeed_soc.h"
+#include "qemu/module.h"
+#include "qemu/error-report.h"
+#include "hw/i2c/aspeed_i2c.h"
+#include "net/net.h"
+#include "sysemu/sysemu.h"
+#include "hw/intc/arm_gicv3.h"
+#include "qapi/qmp/qlist.h"
+
+static const hwaddr aspeed_soc_ast2700_memmap[] = {
+    [ASPEED_DEV_SPI_BOOT]  =  0x400000000,
+    [ASPEED_DEV_SRAM]      =  0x10000000,
+    [ASPEED_DEV_SDMC]      =  0x12C00000,
+    [ASPEED_DEV_SCU]       =  0x12C02000,
+    [ASPEED_DEV_SCUIO]     =  0x14C02000,
+    [ASPEED_DEV_UART0]     =  0X14C33000,
+    [ASPEED_DEV_UART1]     =  0X14C33100,
+    [ASPEED_DEV_UART2]     =  0X14C33200,
+    [ASPEED_DEV_UART3]     =  0X14C33300,
+    [ASPEED_DEV_UART4]     =  0X12C1A000,
+    [ASPEED_DEV_UART5]     =  0X14C33400,
+    [ASPEED_DEV_UART6]     =  0X14C33500,
+    [ASPEED_DEV_UART7]     =  0X14C33600,
+    [ASPEED_DEV_UART8]     =  0X14C33700,
+    [ASPEED_DEV_UART9]     =  0X14C33800,
+    [ASPEED_DEV_UART10]    =  0X14C33900,
+    [ASPEED_DEV_UART11]    =  0X14C33A00,
+    [ASPEED_DEV_UART12]    =  0X14C33B00,
+    [ASPEED_DEV_WDT]       =  0x14C37000,
+    [ASPEED_DEV_VUART]     =  0X14C30000,
+    [ASPEED_DEV_FMC]       =  0x14000000,
+    [ASPEED_DEV_SPI0]      =  0x14010000,
+    [ASPEED_DEV_SPI1]      =  0x14020000,
+    [ASPEED_DEV_SPI2]      =  0x14030000,
+    [ASPEED_DEV_SDRAM]     =  0x400000000,
+    [ASPEED_DEV_MII1]      =  0x14040000,
+    [ASPEED_DEV_MII2]      =  0x14040008,
+    [ASPEED_DEV_MII3]      =  0x14040010,
+    [ASPEED_DEV_ETH1]      =  0x14050000,
+    [ASPEED_DEV_ETH2]      =  0x14060000,
+    [ASPEED_DEV_ETH3]      =  0x14070000,
+    [ASPEED_DEV_EMMC]      =  0x12090000,
+    [ASPEED_DEV_INTC]      =  0x12100000,
+    [ASPEED_DEV_SLI]       =  0x12C17000,
+    [ASPEED_DEV_SLIIO]     =  0x14C1E000,
+    [ASPEED_GIC_DIST]      =  0x12200000,
+    [ASPEED_GIC_REDIST]    =  0x12280000,
+};
+
+#define AST2700_MAX_IRQ 288
+
+/* Shared Peripheral Interrupt values below are offset by -32 from datasheet */
+static const int aspeed_soc_ast2700_irqmap[] = {
+    [ASPEED_DEV_UART0]     = 132,
+    [ASPEED_DEV_UART1]     = 132,
+    [ASPEED_DEV_UART2]     = 132,
+    [ASPEED_DEV_UART3]     = 132,
+    [ASPEED_DEV_UART4]     = 8,
+    [ASPEED_DEV_UART5]     = 132,
+    [ASPEED_DEV_UART6]     = 132,
+    [ASPEED_DEV_UART7]     = 132,
+    [ASPEED_DEV_UART8]     = 132,
+    [ASPEED_DEV_UART9]     = 132,
+    [ASPEED_DEV_UART10]    = 132,
+    [ASPEED_DEV_UART11]    = 132,
+    [ASPEED_DEV_UART12]    = 132,
+    [ASPEED_DEV_FMC]       = 131,
+    [ASPEED_DEV_SDMC]      = 0,
+    [ASPEED_DEV_SCU]       = 12,
+    [ASPEED_DEV_ADC]       = 130,
+    [ASPEED_DEV_XDMA]      = 5,
+    [ASPEED_DEV_EMMC]      = 15,
+    [ASPEED_DEV_GPIO]      = 11,
+    [ASPEED_DEV_GPIO_1_8V] = 130,
+    [ASPEED_DEV_RTC]       = 13,
+    [ASPEED_DEV_TIMER1]    = 16,
+    [ASPEED_DEV_TIMER2]    = 17,
+    [ASPEED_DEV_TIMER3]    = 18,
+    [ASPEED_DEV_TIMER4]    = 19,
+    [ASPEED_DEV_TIMER5]    = 20,
+    [ASPEED_DEV_TIMER6]    = 21,
+    [ASPEED_DEV_TIMER7]    = 22,
+    [ASPEED_DEV_TIMER8]    = 23,
+    [ASPEED_DEV_WDT]       = 131,
+    [ASPEED_DEV_PWM]       = 131,
+    [ASPEED_DEV_LPC]       = 128,
+    [ASPEED_DEV_IBT]       = 128,
+    [ASPEED_DEV_I2C]       = 130,
+    [ASPEED_DEV_PECI]      = 133,
+    [ASPEED_DEV_ETH1]      = 132,
+    [ASPEED_DEV_ETH2]      = 132,
+    [ASPEED_DEV_ETH3]      = 132,
+    [ASPEED_DEV_HACE]      = 4,
+    [ASPEED_DEV_KCS]       = 128,
+    [ASPEED_DEV_DP]        = 28,
+    [ASPEED_DEV_I3C]       = 131,
+};
+
+/* GICINT 128 */
+static const int aspeed_soc_ast2700_gic128_intcmap[] = {
+    [ASPEED_DEV_LPC]       = 0,
+    [ASPEED_DEV_IBT]       = 2,
+    [ASPEED_DEV_KCS]       = 4,
+};
+
+/* GICINT 130 */
+static const int aspeed_soc_ast2700_gic130_intcmap[] = {
+    [ASPEED_DEV_I2C]        = 0,
+    [ASPEED_DEV_ADC]        = 16,
+    [ASPEED_DEV_GPIO_1_8V]  = 18,
+};
+
+/* GICINT 131 */
+static const int aspeed_soc_ast2700_gic131_intcmap[] = {
+    [ASPEED_DEV_I3C]       = 0,
+    [ASPEED_DEV_WDT]       = 16,
+    [ASPEED_DEV_FMC]       = 25,
+    [ASPEED_DEV_PWM]       = 29,
+};
+
+/* GICINT 132 */
+static const int aspeed_soc_ast2700_gic132_intcmap[] = {
+    [ASPEED_DEV_ETH1]      = 0,
+    [ASPEED_DEV_ETH2]      = 1,
+    [ASPEED_DEV_ETH3]      = 2,
+    [ASPEED_DEV_UART0]     = 7,
+    [ASPEED_DEV_UART1]     = 8,
+    [ASPEED_DEV_UART2]     = 9,
+    [ASPEED_DEV_UART3]     = 10,
+    [ASPEED_DEV_UART5]     = 11,
+    [ASPEED_DEV_UART6]     = 12,
+    [ASPEED_DEV_UART7]     = 13,
+    [ASPEED_DEV_UART8]     = 14,
+    [ASPEED_DEV_UART9]     = 15,
+    [ASPEED_DEV_UART10]    = 16,
+    [ASPEED_DEV_UART11]    = 17,
+    [ASPEED_DEV_UART12]    = 18,
+};
+
+/* GICINT 133 */
+static const int aspeed_soc_ast2700_gic133_intcmap[] = {
+    [ASPEED_DEV_PECI]      = 4,
+};
+
+/* GICINT 128 ~ 136 */
+struct gic_intc_irq_info {
+    int irq;
+    const int *ptr;
+};
+
+static const struct gic_intc_irq_info aspeed_soc_ast2700_gic_intcmap[] = {
+    {128,  aspeed_soc_ast2700_gic128_intcmap},
+    {129,  NULL},
+    {130,  aspeed_soc_ast2700_gic130_intcmap},
+    {131,  aspeed_soc_ast2700_gic131_intcmap},
+    {132,  aspeed_soc_ast2700_gic132_intcmap},
+    {133,  aspeed_soc_ast2700_gic133_intcmap},
+    {134,  NULL},
+    {135,  NULL},
+    {136,  NULL},
+};
+
+static qemu_irq aspeed_soc_ast2700_get_irq(AspeedSoCState *s, int dev)
+{
+    Aspeed27x0SoCState *a = ASPEED27X0_SOC(s);
+    AspeedSoCClass *sc = ASPEED_SOC_GET_CLASS(s);
+    int i;
+
+    for (i = 0; i < ARRAY_SIZE(aspeed_soc_ast2700_gic_intcmap); i++) {
+        if (sc->irqmap[dev] == aspeed_soc_ast2700_gic_intcmap[i].irq) {
+            assert(aspeed_soc_ast2700_gic_intcmap[i].ptr);
+            return qdev_get_gpio_in(DEVICE(&a->intc.orgates[i]),
+                aspeed_soc_ast2700_gic_intcmap[i].ptr[dev]);
+        }
+    }
+
+    return qdev_get_gpio_in(DEVICE(&a->gic), sc->irqmap[dev]);
+}
+
+static void aspeed_soc_ast2700_init(Object *obj)
+{
+    Aspeed27x0SoCState *a = ASPEED27X0_SOC(obj);
+    AspeedSoCState *s = ASPEED_SOC(obj);
+    AspeedSoCClass *sc = ASPEED_SOC_GET_CLASS(s);
+    int i;
+    char socname[8];
+    char typename[64];
+
+    if (sscanf(sc->name, "%7s", socname) != 1) {
+        g_assert_not_reached();
+    }
+
+    for (i = 0; i < sc->num_cpus; i++) {
+        object_initialize_child(obj, "cpu[*]", &a->cpu[i],
+                                aspeed_soc_cpu_type(sc));
+    }
+
+    object_initialize_child(obj, "gic", &a->gic, gicv3_class_name());
+
+    object_initialize_child(obj, "scu", &s->scu, TYPE_ASPEED_2700_SCU);
+    qdev_prop_set_uint32(DEVICE(&s->scu), "silicon-rev",
+                         sc->silicon_rev);
+    object_property_add_alias(obj, "hw-strap1", OBJECT(&s->scu),
+                              "hw-strap1");
+    object_property_add_alias(obj, "hw-strap2", OBJECT(&s->scu),
+                              "hw-strap2");
+    object_property_add_alias(obj, "hw-prot-key", OBJECT(&s->scu),
+                              "hw-prot-key");
+
+    object_initialize_child(obj, "scuio", &s->scuio, TYPE_ASPEED_2700_SCUIO);
+    qdev_prop_set_uint32(DEVICE(&s->scuio), "silicon-rev",
+                         sc->silicon_rev);
+
+    snprintf(typename, sizeof(typename), "aspeed.fmc-%s", socname);
+    object_initialize_child(obj, "fmc", &s->fmc, typename);
+
+    for (i = 0; i < sc->spis_num; i++) {
+        snprintf(typename, sizeof(typename), "aspeed.spi%d-%s", i, socname);
+        object_initialize_child(obj, "spi[*]", &s->spi[i], typename);
+    }
+
+    snprintf(typename, sizeof(typename), "aspeed.sdmc-%s", socname);
+    object_initialize_child(obj, "sdmc", &s->sdmc, typename);
+    object_property_add_alias(obj, "ram-size", OBJECT(&s->sdmc),
+                              "ram-size");
+
+    for (i = 0; i < sc->wdts_num; i++) {
+        snprintf(typename, sizeof(typename), "aspeed.wdt-%s", socname);
+        object_initialize_child(obj, "wdt[*]", &s->wdt[i], typename);
+    }
+
+    for (i = 0; i < sc->macs_num; i++) {
+        object_initialize_child(obj, "ftgmac100[*]", &s->ftgmac100[i],
+                                TYPE_FTGMAC100);
+
+        object_initialize_child(obj, "mii[*]", &s->mii[i], TYPE_ASPEED_MII);
+    }
+
+    for (i = 0; i < sc->uarts_num; i++) {
+        object_initialize_child(obj, "uart[*]", &s->uart[i], TYPE_SERIAL_MM);
+    }
+
+    object_initialize_child(obj, "sli", &s->sli, TYPE_ASPEED_2700_SLI);
+    object_initialize_child(obj, "sliio", &s->sliio, TYPE_ASPEED_2700_SLIIO);
+    object_initialize_child(obj, "intc", &a->intc, TYPE_ASPEED_2700_INTC);
+}
+
+/*
+ * ASPEED ast2700 has 0x0 as cluster ID
+ *
+ * https://developer.arm.com/documentation/100236/0100/register-descriptions/aarch64-system-registers/multiprocessor-affinity-register--el1
+ */
+static uint64_t aspeed_calc_affinity(int cpu)
+{
+    return (0x0 << ARM_AFF1_SHIFT) | cpu;
+}
+
+static bool aspeed_soc_ast2700_gic_realize(DeviceState *dev, Error **errp)
+{
+    Aspeed27x0SoCState *a = ASPEED27X0_SOC(dev);
+    AspeedSoCState *s = ASPEED_SOC(dev);
+    AspeedSoCClass *sc = ASPEED_SOC_GET_CLASS(s);
+    SysBusDevice *gicbusdev;
+    DeviceState *gicdev;
+    QList *redist_region_count;
+    int i;
+
+    gicbusdev = SYS_BUS_DEVICE(&a->gic);
+    gicdev = DEVICE(&a->gic);
+    qdev_prop_set_uint32(gicdev, "revision", 3);
+    qdev_prop_set_uint32(gicdev, "num-cpu", sc->num_cpus);
+    qdev_prop_set_uint32(gicdev, "num-irq", AST2700_MAX_IRQ);
+
+    redist_region_count = qlist_new();
+    qlist_append_int(redist_region_count, sc->num_cpus);
+    qdev_prop_set_array(gicdev, "redist-region-count", redist_region_count);
+
+    if (!sysbus_realize(gicbusdev, errp)) {
+        return false;
+    }
+    sysbus_mmio_map(gicbusdev, 0, sc->memmap[ASPEED_GIC_DIST]);
+    sysbus_mmio_map(gicbusdev, 1, sc->memmap[ASPEED_GIC_REDIST]);
+
+    for (i = 0; i < sc->num_cpus; i++) {
+        DeviceState *cpudev = DEVICE(&a->cpu[i]);
+        int NUM_IRQS = 256, ARCH_GIC_MAINT_IRQ = 9, VIRTUAL_PMU_IRQ = 7;
+        int ppibase = NUM_IRQS + i * GIC_INTERNAL + GIC_NR_SGIS;
+
+        const int timer_irq[] = {
+            [GTIMER_PHYS] = 14,
+            [GTIMER_VIRT] = 11,
+            [GTIMER_HYP]  = 10,
+            [GTIMER_SEC]  = 13,
+        };
+        int j;
+
+        for (j = 0; j < ARRAY_SIZE(timer_irq); j++) {
+            qdev_connect_gpio_out(cpudev, j,
+                    qdev_get_gpio_in(gicdev, ppibase + timer_irq[j]));
+        }
+
+        qemu_irq irq = qdev_get_gpio_in(gicdev,
+                                        ppibase + ARCH_GIC_MAINT_IRQ);
+        qdev_connect_gpio_out_named(cpudev, "gicv3-maintenance-interrupt",
+                                    0, irq);
+        qdev_connect_gpio_out_named(cpudev, "pmu-interrupt", 0,
+                qdev_get_gpio_in(gicdev, ppibase + VIRTUAL_PMU_IRQ));
+
+        sysbus_connect_irq(gicbusdev, i, qdev_get_gpio_in(cpudev, ARM_CPU_IRQ));
+        sysbus_connect_irq(gicbusdev, i + sc->num_cpus,
+                           qdev_get_gpio_in(cpudev, ARM_CPU_FIQ));
+        sysbus_connect_irq(gicbusdev, i + 2 * sc->num_cpus,
+                           qdev_get_gpio_in(cpudev, ARM_CPU_VIRQ));
+        sysbus_connect_irq(gicbusdev, i + 3 * sc->num_cpus,
+                           qdev_get_gpio_in(cpudev, ARM_CPU_VFIQ));
+    }
+
+    return true;
+}
+
+static void aspeed_soc_ast2700_realize(DeviceState *dev, Error **errp)
+{
+    int i;
+    Aspeed27x0SoCState *a = ASPEED27X0_SOC(dev);
+    AspeedSoCState *s = ASPEED_SOC(dev);
+    AspeedSoCClass *sc = ASPEED_SOC_GET_CLASS(s);
+    AspeedINTCClass *ic = ASPEED_INTC_GET_CLASS(&a->intc);
+    g_autofree char *sram_name = NULL;
+
+    /* Default boot region (SPI memory or ROMs) */
+    memory_region_init(&s->spi_boot_container, OBJECT(s),
+                       "aspeed.spi_boot_container", 0x400000000);
+    memory_region_add_subregion(s->memory, sc->memmap[ASPEED_DEV_SPI_BOOT],
+                                &s->spi_boot_container);
+
+    /* CPU */
+    for (i = 0; i < sc->num_cpus; i++) {
+        object_property_set_int(OBJECT(&a->cpu[i]), "mp-affinity",
+                                aspeed_calc_affinity(i), &error_abort);
+
+        object_property_set_int(OBJECT(&a->cpu[i]), "cntfrq", 1125000000,
+                                &error_abort);
+        object_property_set_link(OBJECT(&a->cpu[i]), "memory",
+                                 OBJECT(s->memory), &error_abort);
+
+        if (!qdev_realize(DEVICE(&a->cpu[i]), NULL, errp)) {
+            return;
+        }
+    }
+
+    /* GIC */
+    if (!aspeed_soc_ast2700_gic_realize(dev, errp)) {
+        return;
+    }
+
+    /* INTC */
+    if (!sysbus_realize(SYS_BUS_DEVICE(&a->intc), errp)) {
+        return;
+    }
+
+    aspeed_mmio_map(s, SYS_BUS_DEVICE(&a->intc), 0,
+                    sc->memmap[ASPEED_DEV_INTC]);
+
+    /* GICINT orgates -> INTC -> GIC */
+    for (i = 0; i < ic->num_ints; i++) {
+        qdev_connect_gpio_out(DEVICE(&a->intc.orgates[i]), 0,
+                                qdev_get_gpio_in(DEVICE(&a->intc), i));
+        sysbus_connect_irq(SYS_BUS_DEVICE(&a->intc), i,
+                           qdev_get_gpio_in(DEVICE(&a->gic),
+                                aspeed_soc_ast2700_gic_intcmap[i].irq));
+    }
+
+    /* SRAM */
+    sram_name = g_strdup_printf("aspeed.sram.%d", CPU(&a->cpu[0])->cpu_index);
+    if (!memory_region_init_ram(&s->sram, OBJECT(s), sram_name, sc->sram_size,
+                                 errp)) {
+        return;
+    }
+    memory_region_add_subregion(s->memory,
+                                sc->memmap[ASPEED_DEV_SRAM], &s->sram);
+
+    /* SCU */
+    if (!sysbus_realize(SYS_BUS_DEVICE(&s->scu), errp)) {
+        return;
+    }
+    aspeed_mmio_map(s, SYS_BUS_DEVICE(&s->scu), 0, sc->memmap[ASPEED_DEV_SCU]);
+
+    /* SCU1 */
+    if (!sysbus_realize(SYS_BUS_DEVICE(&s->scuio), errp)) {
+        return;
+    }
+    aspeed_mmio_map(s, SYS_BUS_DEVICE(&s->scuio), 0,
+                    sc->memmap[ASPEED_DEV_SCUIO]);
+
+    /* UART */
+    if (!aspeed_soc_uart_realize(s, errp)) {
+        return;
+    }
+
+    /* FMC, The number of CS is set at the board level */
+    object_property_set_int(OBJECT(&s->fmc), "dram-base",
+                            sc->memmap[ASPEED_DEV_SDRAM],
+                            &error_abort);
+    object_property_set_link(OBJECT(&s->fmc), "dram", OBJECT(s->dram_mr),
+                             &error_abort);
+    if (!sysbus_realize(SYS_BUS_DEVICE(&s->fmc), errp)) {
+        return;
+    }
+    aspeed_mmio_map(s, SYS_BUS_DEVICE(&s->fmc), 0, sc->memmap[ASPEED_DEV_FMC]);
+    aspeed_mmio_map(s, SYS_BUS_DEVICE(&s->fmc), 1,
+                    ASPEED_SMC_GET_CLASS(&s->fmc)->flash_window_base);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->fmc), 0,
+                       aspeed_soc_get_irq(s, ASPEED_DEV_FMC));
+
+    /* Set up an alias on the FMC CE0 region (boot default) */
+    MemoryRegion *fmc0_mmio = &s->fmc.flashes[0].mmio;
+    memory_region_init_alias(&s->spi_boot, OBJECT(s), "aspeed.spi_boot",
+                             fmc0_mmio, 0, memory_region_size(fmc0_mmio));
+    memory_region_add_subregion(&s->spi_boot_container, 0x0, &s->spi_boot);
+
+    /* SPI */
+    for (i = 0; i < sc->spis_num; i++) {
+        object_property_set_link(OBJECT(&s->spi[i]), "dram",
+                                 OBJECT(s->dram_mr), &error_abort);
+        if (!sysbus_realize(SYS_BUS_DEVICE(&s->spi[i]), errp)) {
+            return;
+        }
+        aspeed_mmio_map(s, SYS_BUS_DEVICE(&s->spi[i]), 0,
+                        sc->memmap[ASPEED_DEV_SPI0 + i]);
+        aspeed_mmio_map(s, SYS_BUS_DEVICE(&s->spi[i]), 1,
+                        ASPEED_SMC_GET_CLASS(&s->spi[i])->flash_window_base);
+    }
+
+    /*
+     * SDMC - SDRAM Memory Controller
+     * The SDMC controller is unlocked at SPL stage.
+     * At present, only supports to emulate booting
+     * start from u-boot stage. Set SDMC controller
+     * unlocked by default. It is a temporarily solution.
+     */
+    object_property_set_bool(OBJECT(&s->sdmc), "unlocked", true,
+                                 &error_abort);
+    if (!sysbus_realize(SYS_BUS_DEVICE(&s->sdmc), errp)) {
+        return;
+    }
+    aspeed_mmio_map(s, SYS_BUS_DEVICE(&s->sdmc), 0,
+                    sc->memmap[ASPEED_DEV_SDMC]);
+
+    /* RAM */
+    if (!aspeed_soc_dram_init(s, errp)) {
+        return;
+    }
+
+    for (i = 0; i < sc->macs_num; i++) {
+        object_property_set_bool(OBJECT(&s->ftgmac100[i]), "aspeed", true,
+                                 &error_abort);
+        if (!sysbus_realize(SYS_BUS_DEVICE(&s->ftgmac100[i]), errp)) {
+            return;
+        }
+        aspeed_mmio_map(s, SYS_BUS_DEVICE(&s->ftgmac100[i]), 0,
+                        sc->memmap[ASPEED_DEV_ETH1 + i]);
+        sysbus_connect_irq(SYS_BUS_DEVICE(&s->ftgmac100[i]), 0,
+                           aspeed_soc_get_irq(s, ASPEED_DEV_ETH1 + i));
+
+        object_property_set_link(OBJECT(&s->mii[i]), "nic",
+                                 OBJECT(&s->ftgmac100[i]), &error_abort);
+        if (!sysbus_realize(SYS_BUS_DEVICE(&s->mii[i]), errp)) {
+            return;
+        }
+
+        aspeed_mmio_map(s, SYS_BUS_DEVICE(&s->mii[i]), 0,
+                        sc->memmap[ASPEED_DEV_MII1 + i]);
+    }
+
+    /* Watch dog */
+    for (i = 0; i < sc->wdts_num; i++) {
+        AspeedWDTClass *awc = ASPEED_WDT_GET_CLASS(&s->wdt[i]);
+        hwaddr wdt_offset = sc->memmap[ASPEED_DEV_WDT] + i * awc->iosize;
+
+        object_property_set_link(OBJECT(&s->wdt[i]), "scu", OBJECT(&s->scu),
+                                 &error_abort);
+        if (!sysbus_realize(SYS_BUS_DEVICE(&s->wdt[i]), errp)) {
+            return;
+        }
+        aspeed_mmio_map(s, SYS_BUS_DEVICE(&s->wdt[i]), 0, wdt_offset);
+    }
+
+    /* SLI */
+    if (!sysbus_realize(SYS_BUS_DEVICE(&s->sli), errp)) {
+        return;
+    }
+    aspeed_mmio_map(s, SYS_BUS_DEVICE(&s->sli), 0, sc->memmap[ASPEED_DEV_SLI]);
+
+    if (!sysbus_realize(SYS_BUS_DEVICE(&s->sliio), errp)) {
+        return;
+    }
+    aspeed_mmio_map(s, SYS_BUS_DEVICE(&s->sliio), 0,
+                    sc->memmap[ASPEED_DEV_SLIIO]);
+
+    create_unimplemented_device("ast2700.dpmcu", 0x11000000, 0x40000);
+    create_unimplemented_device("ast2700.iomem0", 0x12000000, 0x01000000);
+    create_unimplemented_device("ast2700.iomem1", 0x14000000, 0x01000000);
+    create_unimplemented_device("ast2700.ltpi", 0x30000000, 0x1000000);
+    create_unimplemented_device("ast2700.io", 0x0, 0x4000000);
+}
+
+static void aspeed_soc_ast2700_class_init(ObjectClass *oc, void *data)
+{
+    static const char * const valid_cpu_types[] = {
+        ARM_CPU_TYPE_NAME("cortex-a35"),
+        NULL
+    };
+    DeviceClass *dc = DEVICE_CLASS(oc);
+    AspeedSoCClass *sc = ASPEED_SOC_CLASS(oc);
+
+    /* Reason: The Aspeed SoC can only be instantiated from a board */
+    dc->user_creatable = false;
+    dc->realize      = aspeed_soc_ast2700_realize;
+
+    sc->name         = "ast2700-a0";
+    sc->valid_cpu_types = valid_cpu_types;
+    sc->silicon_rev  = AST2700_A0_SILICON_REV;
+    sc->sram_size    = 0x20000;
+    sc->spis_num     = 3;
+    sc->wdts_num     = 8;
+    sc->macs_num     = 1;
+    sc->uarts_num    = 13;
+    sc->num_cpus     = 4;
+    sc->uarts_base   = ASPEED_DEV_UART0;
+    sc->irqmap       = aspeed_soc_ast2700_irqmap;
+    sc->memmap       = aspeed_soc_ast2700_memmap;
+    sc->get_irq      = aspeed_soc_ast2700_get_irq;
+}
+
+static const TypeInfo aspeed_soc_ast27x0_types[] = {
+    {
+        .name           = TYPE_ASPEED27X0_SOC,
+        .parent         = TYPE_ASPEED_SOC,
+        .instance_size  = sizeof(Aspeed27x0SoCState),
+        .abstract       = true,
+    }, {
+        .name           = "ast2700-a0",
+        .parent         = TYPE_ASPEED27X0_SOC,
+        .instance_init  = aspeed_soc_ast2700_init,
+        .class_init     = aspeed_soc_ast2700_class_init,
+    },
+};
+
+DEFINE_TYPES(aspeed_soc_ast27x0_types)
diff --git a/hw/arm/meson.build b/hw/arm/meson.build
index aefde0c..0c07ab5 100644
--- a/hw/arm/meson.build
+++ b/hw/arm/meson.build
@@ -49,6 +49,7 @@ arm_ss.add(when: 'CONFIG_ASPEED_SOC', if_true: files(
   'aspeed_ast10x0.c',
   'aspeed_eeprom.c',
   'fby35.c'))
+arm_ss.add(when: ['CONFIG_ASPEED_SOC', 'TARGET_AARCH64'], if_true: files('aspeed_ast27x0.c'))
 arm_ss.add(when: 'CONFIG_MPS2', if_true: files('mps2.c'))
 arm_ss.add(when: 'CONFIG_MPS2', if_true: files('mps2-tz.c'))
 arm_ss.add(when: 'CONFIG_MSF2', if_true: files('msf2-soc.c'))