2018-09-25 15:02:31 +02:00
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/*
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* Nordic Semiconductor nRF51 SoC
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* http://infocenter.nordicsemi.com/pdf/nRF51_RM_v3.0.1.pdf
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*
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* Copyright 2018 Joel Stanley <joel@jms.id.au>
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*
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* This code is licensed under the GPL version 2 or later. See
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* the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "qemu-common.h"
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#include "hw/arm/arm.h"
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#include "hw/sysbus.h"
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#include "hw/boards.h"
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#include "hw/devices.h"
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#include "hw/misc/unimp.h"
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#include "exec/address-spaces.h"
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#include "sysemu/sysemu.h"
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#include "qemu/log.h"
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#include "cpu.h"
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#include "hw/arm/nrf51_soc.h"
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#define IOMEM_BASE 0x40000000
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#define IOMEM_SIZE 0x20000000
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#define FICR_BASE 0x10000000
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#define FICR_SIZE 0x000000fc
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#define FLASH_BASE 0x00000000
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#define SRAM_BASE 0x20000000
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#define PRIVATE_BASE 0xF0000000
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#define PRIVATE_SIZE 0x10000000
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/*
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* The size and base is for the NRF51822 part. If other parts
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* are supported in the future, add a sub-class of NRF51SoC for
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* the specific variants
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*/
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#define NRF51822_FLASH_SIZE (256 * 1024)
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#define NRF51822_SRAM_SIZE (16 * 1024)
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2018-10-30 16:23:56 +01:00
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#define BASE_TO_IRQ(base) ((base >> 12) & 0x1F)
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2018-09-25 15:02:31 +02:00
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static void nrf51_soc_realize(DeviceState *dev_soc, Error **errp)
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{
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NRF51State *s = NRF51_SOC(dev_soc);
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2018-10-30 16:23:56 +01:00
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MemoryRegion *mr;
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2018-09-25 15:02:31 +02:00
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Error *err = NULL;
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if (!s->board_memory) {
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error_setg(errp, "memory property was not set");
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return;
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}
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object_property_set_link(OBJECT(&s->cpu), OBJECT(&s->container), "memory",
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&err);
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if (err) {
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error_propagate(errp, err);
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return;
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}
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object_property_set_bool(OBJECT(&s->cpu), true, "realized", &err);
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if (err) {
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error_propagate(errp, err);
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return;
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}
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memory_region_add_subregion_overlap(&s->container, 0, s->board_memory, -1);
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memory_region_init_rom(&s->flash, OBJECT(s), "nrf51.flash", s->flash_size,
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&err);
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if (err) {
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error_propagate(errp, err);
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return;
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}
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memory_region_add_subregion(&s->container, FLASH_BASE, &s->flash);
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memory_region_init_ram(&s->sram, NULL, "nrf51.sram", s->sram_size, &err);
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if (err) {
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error_propagate(errp, err);
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return;
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}
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memory_region_add_subregion(&s->container, SRAM_BASE, &s->sram);
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2018-10-30 16:23:56 +01:00
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/* UART */
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object_property_set_bool(OBJECT(&s->uart), true, "realized", &err);
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if (err) {
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error_propagate(errp, err);
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return;
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}
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mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->uart), 0);
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memory_region_add_subregion_overlap(&s->container, UART_BASE, mr, 0);
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sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart), 0,
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qdev_get_gpio_in(DEVICE(&s->cpu),
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BASE_TO_IRQ(UART_BASE)));
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2018-09-25 15:02:31 +02:00
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create_unimplemented_device("nrf51_soc.io", IOMEM_BASE, IOMEM_SIZE);
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create_unimplemented_device("nrf51_soc.ficr", FICR_BASE, FICR_SIZE);
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create_unimplemented_device("nrf51_soc.private",
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PRIVATE_BASE, PRIVATE_SIZE);
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}
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static void nrf51_soc_init(Object *obj)
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{
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NRF51State *s = NRF51_SOC(obj);
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memory_region_init(&s->container, obj, "nrf51-container", UINT64_MAX);
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sysbus_init_child_obj(OBJECT(s), "armv6m", OBJECT(&s->cpu), sizeof(s->cpu),
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TYPE_ARMV7M);
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qdev_prop_set_string(DEVICE(&s->cpu), "cpu-type",
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ARM_CPU_TYPE_NAME("cortex-m0"));
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qdev_prop_set_uint32(DEVICE(&s->cpu), "num-irq", 32);
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2018-10-30 16:23:56 +01:00
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sysbus_init_child_obj(obj, "uart", &s->uart, sizeof(s->uart),
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TYPE_NRF51_UART);
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object_property_add_alias(obj, "serial0", OBJECT(&s->uart), "chardev",
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&error_abort);
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2018-09-25 15:02:31 +02:00
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}
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static Property nrf51_soc_properties[] = {
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DEFINE_PROP_LINK("memory", NRF51State, board_memory, TYPE_MEMORY_REGION,
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MemoryRegion *),
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DEFINE_PROP_UINT32("sram-size", NRF51State, sram_size, NRF51822_SRAM_SIZE),
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DEFINE_PROP_UINT32("flash-size", NRF51State, flash_size,
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NRF51822_FLASH_SIZE),
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DEFINE_PROP_END_OF_LIST(),
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};
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static void nrf51_soc_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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dc->realize = nrf51_soc_realize;
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dc->props = nrf51_soc_properties;
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}
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static const TypeInfo nrf51_soc_info = {
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.name = TYPE_NRF51_SOC,
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.parent = TYPE_SYS_BUS_DEVICE,
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.instance_size = sizeof(NRF51State),
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.instance_init = nrf51_soc_init,
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.class_init = nrf51_soc_class_init,
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};
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static void nrf51_soc_types(void)
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{
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type_register_static(&nrf51_soc_info);
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}
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type_init(nrf51_soc_types)
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