diff options
Diffstat (limited to 'components')
| -rw-r--r-- | components/drivers/core/SConscript | 3 | ||||
| -rw-r--r-- | components/drivers/core/mnt.c | 172 |
2 files changed, 175 insertions, 0 deletions
diff --git a/components/drivers/core/SConscript b/components/drivers/core/SConscript index 0f345fbea7..99b39436b2 100644 --- a/components/drivers/core/SConscript +++ b/components/drivers/core/SConscript @@ -10,6 +10,9 @@ if GetDepend(['RT_USING_DEV_BUS']) or GetDepend(['RT_USING_DM']): if GetDepend(['RT_USING_DM']): src = src + ['dm.c', 'driver.c', 'platform.c'] + if GetDepend(['RT_USING_DFS']): + src += ['mnt.c']; + if GetDepend(['RT_USING_OFW']): src += ['platform_ofw.c'] diff --git a/components/drivers/core/mnt.c b/components/drivers/core/mnt.c new file mode 100644 index 0000000000..cca6d1c944 --- /dev/null +++ b/components/drivers/core/mnt.c @@ -0,0 +1,172 @@ +/* + * Copyright (c) 2006-2023, RT-Thread Development Team + * + * SPDX-License-Identifier: Apache-2.0 + * + * Change Logs: + * Date Author Notes + * 2023-02-21 GuEe-GUI first version + */ + +#include <rtthread.h> +#include <rtdevice.h> + +#define DBG_TAG "rtdm.mnt" +#define DBG_LVL DBG_INFO +#include <rtdbg.h> + +#include <stdlib.h> +#include <dfs_fs.h> +#ifdef RT_USING_FINSH +#include <msh.h> +#endif +#include <ioremap.h> + +#ifdef RT_USING_OFW +#define bootargs_select rt_ofw_bootargs_select +#define memregion_request rt_fdt_commit_memregion_request +#else +#error Platform have not kernel parameters select interfaces! +#endif + +static int rootfs_mnt_init(void) +{ + rt_err_t err = -RT_ERROR; + void *fsdata = RT_NULL; + const char *cromfs_type = "crom"; + const char *dev = bootargs_select("root=", 0); + const char *fstype = bootargs_select("rootfstype=", 0); + const char *rw = bootargs_select("rw", 0); + + if (!dev || !fstype) + { + const char *name = "initrd"; + rt_size_t mem_region_nr; + rt_region_t *mem_region; + rt_uint64_t initrd_start = 0, initrd_end = 0; + + if (!memregion_request(&mem_region, &mem_region_nr, RT_TRUE)) + { + while (mem_region_nr-- > 0) + { + if (mem_region->name == name || !rt_strcmp(mem_region->name, name)) + { + initrd_start = mem_region->start; + initrd_end = mem_region->end; + + break; + } + + mem_region++; + } + } + + if (initrd_start && initrd_end) + { + size_t initrd_size = initrd_end - initrd_start; + + if ((fsdata = rt_ioremap_cached((void *)initrd_start, initrd_size))) + { + fstype = cromfs_type; + } + } + } + + if (fstype != cromfs_type && dev) + { + rt_tick_t timeout = 0; + const char *rootwait, *rootdelay = RT_NULL; + + rootwait = bootargs_select("rootwait", 0); + + /* Maybe it is undefined or 'rootwaitABC' */ + if (!rootwait || *rootwait) + { + rootdelay = bootargs_select("rootdelay=", 0); + + if (rootdelay) + { + timeout = rt_tick_from_millisecond(atoi(rootdelay)); + } + + rootwait = RT_NULL; + } + + /* + * Delays in boot flow is a terrible behavior in RTOS, but the RT-Thread + * SDIO framework init the devices in a task that we need to wait for + * SDIO devices to init complete... + * + * WHAT THE F*CK PROBLEMS WILL HAPPENED? + * + * Your main PE, applications, services that depend on the root FS and + * the multi cores setup, init will delay, too... + * + * So, you can try to link this function to `INIT_APP_EXPORT` even later + * and remove the delays if you want to optimize the boot time and mount + * the FS auto. + */ + for (; rootdelay || rootwait; --timeout) + { + if (!rootwait && timeout == 0) + { + LOG_E("Wait for /dev/%s init time out", dev); + + /* + * We don't return at once because the device driver may init OK + * when we break from this point, might as well give it another + * try. + */ + break; + } + + if (rt_device_find(dev)) + { + break; + } + + rt_thread_mdelay(1); + } + } + + if (fstype) + { + if (!(err = dfs_mount(dev, "/", fstype, rw ? 0 : ~0, fsdata))) + { + LOG_I("Mount root %s%s type=%s %s", + (dev && *dev) ? "on /dev/" : "", + (dev && *dev) ? dev : "\b", + fstype, "done"); + } + else + { + LOG_W("Mount root %s%s type=%s %s", + (dev && *dev) ? "on /dev/" : "", + (dev && *dev) ? dev : "\b", + fstype, "fail"); + + if (fstype == cromfs_type) + { + rt_iounmap(fsdata); + } + } + } + + return 0; +} +INIT_ENV_EXPORT(rootfs_mnt_init); + +static int fstab_mnt_init(void) +{ + mkdir("/mnt", 0755); + +#ifdef RT_USING_FINSH + /* Try mount by table */ + msh_exec_script("fstab.sh", 16); +#endif + + LOG_I("File system initialization done"); + + return 0; +} +INIT_FS_EXPORT(fstab_mnt_init); |