166 lines
4.2 KiB
C
166 lines
4.2 KiB
C
/*
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* Copyright (c) 2006-2023, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2023-02-21 GuEe-GUI first version
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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#define DBG_TAG "rtdm.mnt"
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#define DBG_LVL DBG_INFO
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#include <rtdbg.h>
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#include <stdlib.h>
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#include <dfs_fs.h>
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#ifdef RT_USING_FINSH
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#include <msh.h>
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#endif
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#include <ioremap.h>
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#include <mm_memblock.h>
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#ifdef RT_USING_OFW
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#define bootargs_select rt_ofw_bootargs_select
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#else
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#error Platform have not kernel parameters select interfaces!
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#endif
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static int rootfs_mnt_init(void)
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{
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rt_err_t err = -RT_ERROR;
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void *fsdata = RT_NULL;
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const char *cromfs_type = "crom";
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const char *dev = bootargs_select("root=", 0);
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const char *fstype = bootargs_select("rootfstype=", 0);
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const char *rw = bootargs_select("rw", 0);
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if (!dev || !fstype)
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{
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const char *name = "initrd";
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rt_uint64_t initrd_start = 0, initrd_end = 0;
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struct rt_mmblk_reg *iter = RT_NULL;
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rt_slist_for_each_entry(iter, &(rt_memblock_get_reserved()->reg_list), node)
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{
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if (rt_strcmp(iter->memreg.name, name) == 0)
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{
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initrd_start = iter->memreg.start;
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initrd_end = iter->memreg.end;
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break;
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}
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}
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if (initrd_start && initrd_end)
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{
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size_t initrd_size = initrd_end - initrd_start;
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if ((fsdata = rt_ioremap_cached((void *)initrd_start, initrd_size)))
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{
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fstype = cromfs_type;
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}
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}
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}
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if (fstype != cromfs_type && dev)
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{
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rt_tick_t timeout = 0;
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const char *rootwait, *rootdelay = RT_NULL;
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rootwait = bootargs_select("rootwait", 0);
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/* Maybe it is undefined or 'rootwaitABC' */
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if (!rootwait || *rootwait)
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{
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rootdelay = bootargs_select("rootdelay=", 0);
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if (rootdelay)
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{
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timeout = rt_tick_from_millisecond(atoi(rootdelay));
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}
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rootwait = RT_NULL;
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}
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/*
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* Delays in boot flow is a terrible behavior in RTOS, but the RT-Thread
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* SDIO framework init the devices in a task that we need to wait for
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* SDIO devices to init complete...
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*
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* WHAT THE F*CK PROBLEMS WILL HAPPENED?
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*
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* Your main PE, applications, services that depend on the root FS and
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* the multi cores setup, init will delay, too...
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*
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* So, you can try to link this function to `INIT_APP_EXPORT` even later
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* and remove the delays if you want to optimize the boot time and mount
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* the FS auto.
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*/
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for (; rootdelay || rootwait; --timeout)
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{
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if (!rootwait && timeout == 0)
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{
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LOG_E("Wait for /dev/%s init time out", dev);
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/*
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* We don't return at once because the device driver may init OK
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* when we break from this point, might as well give it another
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* try.
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*/
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break;
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}
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if (rt_device_find(dev))
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{
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break;
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}
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rt_thread_mdelay(1);
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}
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}
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if (fstype)
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{
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if (!(err = dfs_mount(dev, "/", fstype, rw ? 0 : ~0, fsdata)))
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{
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LOG_I("Mount root %s%s type=%s %s",
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(dev && *dev) ? "on /dev/" : "",
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(dev && *dev) ? dev : "\b",
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fstype, "done");
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}
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else
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{
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LOG_W("Mount root %s%s type=%s %s",
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(dev && *dev) ? "on /dev/" : "",
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(dev && *dev) ? dev : "\b",
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fstype, "fail");
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if (fstype == cromfs_type)
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{
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rt_iounmap(fsdata);
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}
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}
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}
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return 0;
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}
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INIT_ENV_EXPORT(rootfs_mnt_init);
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static int fstab_mnt_init(void)
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{
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mkdir("/mnt", 0755);
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#ifdef RT_USING_FINSH
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/* Try mount by table */
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msh_exec_script("fstab.sh", 16);
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#endif
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LOG_I("File system initialization done");
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return 0;
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}
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INIT_FS_EXPORT(fstab_mnt_init);
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