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/*
* BCM2838 SoC emulation
*
* Copyright (C) 2022 Ovchinnikov Vitalii <vitalii.ovchinnikov@auriga.com>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu/module.h"
#include "hw/arm/raspi_platform.h"
#include "hw/sysbus.h"
#include "hw/arm/bcm2838.h"
#include "trace.h"
#define GIC400_MAINTENANCE_IRQ 9
#define GIC400_TIMER_NS_EL2_IRQ 10
#define GIC400_TIMER_VIRT_IRQ 11
#define GIC400_LEGACY_FIQ 12
#define GIC400_TIMER_S_EL1_IRQ 13
#define GIC400_TIMER_NS_EL1_IRQ 14
#define GIC400_LEGACY_IRQ 15
/* Number of external interrupt lines to configure the GIC with */
#define GIC_NUM_IRQS 192
#define PPI(cpu, irq) (GIC_NUM_IRQS + (cpu) * GIC_INTERNAL + GIC_NR_SGIS + irq)
#define GIC_BASE_OFS 0x0000
#define GIC_DIST_OFS 0x1000
#define GIC_CPU_OFS 0x2000
#define GIC_VIFACE_THIS_OFS 0x4000
#define GIC_VIFACE_OTHER_OFS(cpu) (0x5000 + (cpu) * 0x200)
#define GIC_VCPU_OFS 0x6000
#define VIRTUAL_PMU_IRQ 7
static void bcm2838_gic_set_irq(void *opaque, int irq, int level)
{
BCM2838State *s = (BCM2838State *)opaque;
trace_bcm2838_gic_set_irq(irq, level);
qemu_set_irq(qdev_get_gpio_in(DEVICE(&s->gic), irq), level);
}
static void bcm2838_init(Object *obj)
{
BCM2838State *s = BCM2838(obj);
object_initialize_child(obj, "peripherals", &s->peripherals,
TYPE_BCM2838_PERIPHERALS);
object_property_add_alias(obj, "board-rev", OBJECT(&s->peripherals),
"board-rev");
object_property_add_alias(obj, "vcram-size", OBJECT(&s->peripherals),
"vcram-size");
object_property_add_alias(obj, "vcram-base", OBJECT(&s->peripherals),
"vcram-base");
object_property_add_alias(obj, "command-line", OBJECT(&s->peripherals),
"command-line");
object_initialize_child(obj, "gic", &s->gic, TYPE_ARM_GIC);
}
static void bcm2838_realize(DeviceState *dev, Error **errp)
{
BCM2838State *s = BCM2838(dev);
BCM283XBaseState *s_base = BCM283X_BASE(dev);
BCM283XBaseClass *bc_base = BCM283X_BASE_GET_CLASS(dev);
BCM2838PeripheralState *ps = BCM2838_PERIPHERALS(&s->peripherals);
BCMSocPeripheralBaseState *ps_base =
BCM_SOC_PERIPHERALS_BASE(&s->peripherals);
DeviceState *gicdev = NULL;
if (!bcm283x_common_realize(dev, ps_base, errp)) {
return;
}
sysbus_mmio_map_overlap(SYS_BUS_DEVICE(ps), 1, BCM2838_PERI_LOW_BASE, 1);
/* bcm2836 interrupt controller (and mailboxes, etc.) */
if (!sysbus_realize(SYS_BUS_DEVICE(&s_base->control), errp)) {
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s_base->control), 0, bc_base->ctrl_base);
/* Create cores */
for (int n = 0; n < bc_base->core_count; n++) {
object_property_set_int(OBJECT(&s_base->cpu[n].core), "mp-affinity",
(bc_base->clusterid << 8) | n, &error_abort);
/* set periphbase/CBAR value for CPU-local registers */
object_property_set_int(OBJECT(&s_base->cpu[n].core), "reset-cbar",
bc_base->peri_base, &error_abort);
/* start powered off if not enabled */
object_property_set_bool(OBJECT(&s_base->cpu[n].core),
"start-powered-off",
n >= s_base->enabled_cpus, &error_abort);
if (!qdev_realize(DEVICE(&s_base->cpu[n].core), NULL, errp)) {
return;
}
}
if (!object_property_set_uint(OBJECT(&s->gic), "revision", 2, errp)) {
return;
}
if (!object_property_set_uint(OBJECT(&s->gic), "num-cpu", BCM283X_NCPUS,
errp)) {
return;
}
if (!object_property_set_uint(OBJECT(&s->gic), "num-irq",
GIC_NUM_IRQS + GIC_INTERNAL, errp)) {
return;
}
if (!object_property_set_bool(OBJECT(&s->gic),
"has-virtualization-extensions", true,
errp)) {
return;
}
if (!sysbus_realize(SYS_BUS_DEVICE(&s->gic), errp)) {
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->gic), 0,
bc_base->ctrl_base + BCM2838_GIC_BASE + GIC_DIST_OFS);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->gic), 1,
bc_base->ctrl_base + BCM2838_GIC_BASE + GIC_CPU_OFS);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->gic), 2,
bc_base->ctrl_base + BCM2838_GIC_BASE + GIC_VIFACE_THIS_OFS);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->gic), 3,
bc_base->ctrl_base + BCM2838_GIC_BASE + GIC_VCPU_OFS);
for (int n = 0; n < BCM283X_NCPUS; n++) {
sysbus_mmio_map(SYS_BUS_DEVICE(&s->gic), 4 + n,
bc_base->ctrl_base + BCM2838_GIC_BASE
+ GIC_VIFACE_OTHER_OFS(n));
}
gicdev = DEVICE(&s->gic);
for (int n = 0; n < BCM283X_NCPUS; n++) {
DeviceState *cpudev = DEVICE(&s_base->cpu[n]);
/* Connect the GICv2 outputs to the CPU */
sysbus_connect_irq(SYS_BUS_DEVICE(&s->gic), n,
qdev_get_gpio_in(cpudev, ARM_CPU_IRQ));
sysbus_connect_irq(SYS_BUS_DEVICE(&s->gic), n + BCM283X_NCPUS,
qdev_get_gpio_in(cpudev, ARM_CPU_FIQ));
sysbus_connect_irq(SYS_BUS_DEVICE(&s->gic), n + 2 * BCM283X_NCPUS,
qdev_get_gpio_in(cpudev, ARM_CPU_VIRQ));
sysbus_connect_irq(SYS_BUS_DEVICE(&s->gic), n + 3 * BCM283X_NCPUS,
qdev_get_gpio_in(cpudev, ARM_CPU_VFIQ));
sysbus_connect_irq(SYS_BUS_DEVICE(&s->gic), n + 4 * BCM283X_NCPUS,
qdev_get_gpio_in(gicdev,
PPI(n, GIC400_MAINTENANCE_IRQ)));
/* Connect timers from the CPU to the interrupt controller */
qdev_connect_gpio_out(cpudev, GTIMER_PHYS,
qdev_get_gpio_in(gicdev, PPI(n, GIC400_TIMER_NS_EL1_IRQ)));
qdev_connect_gpio_out(cpudev, GTIMER_VIRT,
qdev_get_gpio_in(gicdev, PPI(n, GIC400_TIMER_VIRT_IRQ)));
qdev_connect_gpio_out(cpudev, GTIMER_HYP,
qdev_get_gpio_in(gicdev, PPI(n, GIC400_TIMER_NS_EL2_IRQ)));
qdev_connect_gpio_out(cpudev, GTIMER_SEC,
qdev_get_gpio_in(gicdev, PPI(n, GIC400_TIMER_S_EL1_IRQ)));
/* PMU interrupt */
qdev_connect_gpio_out_named(cpudev, "pmu-interrupt", 0,
qdev_get_gpio_in(gicdev, PPI(n, VIRTUAL_PMU_IRQ)));
}
/* Connect UART0 to the interrupt controller */
sysbus_connect_irq(SYS_BUS_DEVICE(&ps_base->uart0), 0,
qdev_get_gpio_in(gicdev, GIC_SPI_INTERRUPT_UART0));
/* Connect AUX / UART1 to the interrupt controller */
sysbus_connect_irq(SYS_BUS_DEVICE(&ps_base->aux), 0,
qdev_get_gpio_in(gicdev, GIC_SPI_INTERRUPT_AUX_UART1));
/* Connect VC mailbox to the interrupt controller */
sysbus_connect_irq(SYS_BUS_DEVICE(&ps_base->mboxes), 0,
qdev_get_gpio_in(gicdev, GIC_SPI_INTERRUPT_MBOX));
/* Connect SD host to the interrupt controller */
sysbus_connect_irq(SYS_BUS_DEVICE(&ps_base->sdhost), 0,
qdev_get_gpio_in(gicdev, GIC_SPI_INTERRUPT_SDHOST));
/* According to DTS, EMMC and EMMC2 share one irq */
DeviceState *mmc_irq_orgate = DEVICE(&ps->mmc_irq_orgate);
/* Connect EMMC and EMMC2 to the interrupt controller */
qdev_connect_gpio_out(mmc_irq_orgate, 0,
qdev_get_gpio_in(gicdev, GIC_SPI_INTERRUPT_EMMC_EMMC2));
/* Connect USB OTG and MPHI to the interrupt controller */
sysbus_connect_irq(SYS_BUS_DEVICE(&ps_base->mphi), 0,
qdev_get_gpio_in(gicdev, GIC_SPI_INTERRUPT_MPHI));
sysbus_connect_irq(SYS_BUS_DEVICE(&ps_base->dwc2), 0,
qdev_get_gpio_in(gicdev, GIC_SPI_INTERRUPT_DWC2));
/* Connect DMA 0-6 to the interrupt controller */
for (int n = GIC_SPI_INTERRUPT_DMA_0; n <= GIC_SPI_INTERRUPT_DMA_6; n++) {
sysbus_connect_irq(SYS_BUS_DEVICE(&ps_base->dma),
n - GIC_SPI_INTERRUPT_DMA_0,
qdev_get_gpio_in(gicdev, n));
}
/* According to DTS, DMA 7 and 8 share one irq */
DeviceState *dma_7_8_irq_orgate = DEVICE(&ps->dma_7_8_irq_orgate);
/* Connect DMA 7-8 to the interrupt controller */
qdev_connect_gpio_out(dma_7_8_irq_orgate, 0,
qdev_get_gpio_in(gicdev, GIC_SPI_INTERRUPT_DMA_7_8));
/* According to DTS, DMA 9 and 10 share one irq */
DeviceState *dma_9_10_irq_orgate = DEVICE(&ps->dma_9_10_irq_orgate);
/* Connect DMA 9-10 to the interrupt controller */
qdev_connect_gpio_out(dma_9_10_irq_orgate, 0,
qdev_get_gpio_in(gicdev, GIC_SPI_INTERRUPT_DMA_9_10));
/* Pass through inbound GPIO lines to the GIC */
qdev_init_gpio_in(dev, bcm2838_gic_set_irq, GIC_NUM_IRQS);
/* Pass through outbound IRQ lines from the GIC */
qdev_pass_gpios(DEVICE(&s->gic), DEVICE(&s->peripherals), NULL);
}
static void bcm2838_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
BCM283XBaseClass *bc_base = BCM283X_BASE_CLASS(oc);
bc_base->cpu_type = ARM_CPU_TYPE_NAME("cortex-a72");
bc_base->core_count = BCM283X_NCPUS;
bc_base->peri_base = 0xfe000000;
bc_base->ctrl_base = 0xff800000;
bc_base->clusterid = 0x0;
dc->realize = bcm2838_realize;
}
static const TypeInfo bcm2838_type = {
.name = TYPE_BCM2838,
.parent = TYPE_BCM283X_BASE,
.instance_size = sizeof(BCM2838State),
.instance_init = bcm2838_init,
.class_size = sizeof(BCM283XBaseClass),
.class_init = bcm2838_class_init,
};
static void bcm2838_register_types(void)
{
type_register_static(&bcm2838_type);
}
type_init(bcm2838_register_types);
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