109 lines
3.6 KiB
C
109 lines
3.6 KiB
C
/*
|
|
* This file is part of the MicroPython project, http://micropython.org/
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#include "extmod/vfs_fat.h"
|
|
#include "lib/oofatfs/ff.h"
|
|
#include "lib/oofatfs/diskio.h"
|
|
|
|
#include "py/mpstate.h"
|
|
|
|
#include "flash_api.h"
|
|
|
|
#ifdef EXPRESS_BOARD
|
|
// #include "common-hal/touchio/TouchIn.h"
|
|
#define INTERNAL_CIRCUITPY_CONFIG_START_ADDR (0x00040000 - 0x100 - CIRCUITPY_INTERNAL_NVM_SIZE)
|
|
#else
|
|
#define INTERNAL_CIRCUITPY_CONFIG_START_ADDR (0x00040000 - 0x010000 - 0x100 - CIRCUITPY_INTERNAL_NVM_SIZE)
|
|
#endif
|
|
|
|
fs_user_mount_t fs_user_mount_flash;
|
|
mp_vfs_mount_t mp_vfs_mount_flash;
|
|
|
|
static void make_empty_file(FATFS *fatfs, const char *path) {
|
|
FIL fp;
|
|
f_open(fatfs, &fp, path, FA_WRITE | FA_CREATE_ALWAYS);
|
|
f_close(&fp);
|
|
}
|
|
|
|
// we don't make this function static because it needs a lot of stack and we
|
|
// want it to be executed without using stack within main() function
|
|
void filesystem_init(bool create_allowed) {
|
|
// init the vfs object
|
|
fs_user_mount_t *vfs_fat = &fs_user_mount_flash;
|
|
vfs_fat->flags = 0;
|
|
flash_init_vfs(vfs_fat);
|
|
|
|
// try to mount the flash
|
|
FRESULT res = f_mount(&vfs_fat->fatfs);
|
|
|
|
if (res == FR_NO_FILESYSTEM && create_allowed) {
|
|
// no filesystem so create a fresh one
|
|
uint8_t working_buf[_MAX_SS];
|
|
res = f_mkfs(&vfs_fat->fatfs, FM_FAT, 0, working_buf, sizeof(working_buf));
|
|
// Flush the new file system to make sure its repaired immediately.
|
|
flash_flush();
|
|
if (res != FR_OK) {
|
|
return;
|
|
}
|
|
|
|
// set label
|
|
f_setlabel(&vfs_fat->fatfs, "CIRCUITPY");
|
|
|
|
// inhibit file indexing on MacOS
|
|
f_mkdir(&vfs_fat->fatfs, "/.fseventsd");
|
|
make_empty_file(&vfs_fat->fatfs, "/.metadata_never_index");
|
|
make_empty_file(&vfs_fat->fatfs, "/.Trashes");
|
|
make_empty_file(&vfs_fat->fatfs, "/.fseventsd/no_log");
|
|
|
|
// and ensure everything is flushed
|
|
flash_flush();
|
|
} else if (res != FR_OK) {
|
|
return;
|
|
}
|
|
mp_vfs_mount_t *vfs = &mp_vfs_mount_flash;
|
|
vfs->str = "/";
|
|
vfs->len = 1;
|
|
vfs->obj = MP_OBJ_FROM_PTR(vfs_fat);
|
|
vfs->next = NULL;
|
|
MP_STATE_VM(vfs_mount_table) = vfs;
|
|
|
|
// The current directory is used as the boot up directory.
|
|
// It is set to the internal flash filesystem by default.
|
|
MP_STATE_PORT(vfs_cur) = vfs;
|
|
}
|
|
|
|
void filesystem_flush(void) {
|
|
flash_flush();
|
|
}
|
|
|
|
void filesystem_writable_by_python(bool writable) {
|
|
flash_set_usb_writable(!writable);
|
|
}
|
|
|
|
bool filesystem_present(void) {
|
|
return true;
|
|
}
|