137 lines
3.8 KiB
C
137 lines
3.8 KiB
C
/****************************************************************************
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* boards/arm/qemu/qemu-armv7a/src/qemu_bringup.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <syslog.h>
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#include <nuttx/fs/fs.h>
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#include <nuttx/virtio/virtio-mmio.h>
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#include <nuttx/fdt.h>
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#ifdef CONFIG_LIBC_FDT
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# include <libfdt.h>
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#endif
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#include "qemu-armv7a.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#ifndef QEMU_SPI_IRQ_BASE
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#define QEMU_SPI_IRQ_BASE 32
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#endif
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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#if defined(CONFIG_LIBC_FDT) && defined(CONFIG_DEVICE_TREE)
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#ifdef CONFIG_DRIVERS_VIRTIO_MMIO
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/****************************************************************************
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* Name: register_virtio_devices_from_fdt
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****************************************************************************/
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static void register_virtio_devices_from_fdt(const void *fdt)
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{
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uintptr_t addr;
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int offset = -1;
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int irqnum;
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for (; ; )
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{
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offset = fdt_node_offset_by_compatible(fdt, offset, "virtio,mmio");
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if (offset == -FDT_ERR_NOTFOUND)
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{
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break;
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}
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addr = fdt_get_reg_base(fdt, offset, 0);
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irqnum = fdt_get_irq(fdt, offset, 1, QEMU_SPI_IRQ_BASE);
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if (addr > 0 && irqnum >= 0)
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{
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virtio_register_mmio_device((void *)addr, irqnum);
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}
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}
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}
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#endif
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/****************************************************************************
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* Name: register_devices_from_fdt
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****************************************************************************/
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static void register_devices_from_fdt(void)
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{
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const void *fdt = fdt_get();
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if (fdt == NULL)
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{
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return;
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}
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#ifdef CONFIG_DRIVERS_VIRTIO_MMIO
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register_virtio_devices_from_fdt(fdt);
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#endif
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}
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: imx_bringup
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*
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* Description:
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* Bring up board features
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*
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****************************************************************************/
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int qemu_bringup(void)
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{
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int ret;
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#ifdef CONFIG_FS_PROCFS
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/* Mount the procfs file system */
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ret = nx_mount(NULL, "/proc", "procfs", 0, NULL);
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if (ret < 0)
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{
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syslog(LOG_ERR, "ERROR: Failed to mount procfs at /proc: %d\n", ret);
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}
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#endif
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#if defined(CONFIG_LIBC_FDT) && defined(CONFIG_DEVICE_TREE)
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register_devices_from_fdt();
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#endif
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UNUSED(ret);
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return OK;
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}
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