cc906e28e4
Summary: - I noticed that device discovery for virtio-mmio devices does not work without bus=virtio-mmio-bus.x option. Without this option, qemu assigns the virtio device into the virtio-mmio space in reverse order automatically. - To fix this issue, we must specify the correct numbers for the target machines. (i.e. arm32/64->32, rv32/64->8) Impact: - None Testing: - Tested with qemu-7.2.4 Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
100 lines
3.1 KiB
C
100 lines
3.1 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 "qemu-armv7a.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define QEMU_VIRTIO_MMIO_BASE 0x0a000000
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#define QEMU_VIRTIO_MMIO_REGSIZE 0x200
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#define QEMU_VIRTIO_MMIO_IRQ 48
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#define QEMU_VIRTIO_MMIO_NUM 32
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: qemu_virtio_register_mmio_devices
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****************************************************************************/
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#ifdef CONFIG_DRIVERS_VIRTIO_MMIO
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static void qemu_virtio_register_mmio_devices(void)
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{
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uintptr_t virtio = (uintptr_t)QEMU_VIRTIO_MMIO_BASE;
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size_t size = QEMU_VIRTIO_MMIO_REGSIZE;
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int irq = QEMU_VIRTIO_MMIO_IRQ;
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int i;
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for (i = 0; i < QEMU_VIRTIO_MMIO_NUM; i++)
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{
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virtio_register_mmio_device((void *)(virtio + size * i), irq + i);
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}
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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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#ifdef CONFIG_DRIVERS_VIRTIO_MMIO
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qemu_virtio_register_mmio_devices();
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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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