mirror of
https://github.com/apache/nuttx-apps.git
synced 2026-08-01 20:29:00 +00:00
examples/mtdpart:Register MTD devices using the mtd_register method
1. Due to the automatic wrapping of MTD devices during the open() process, the legacy registration methods ftl_initialize() and bchdev_register() are no longer required for MTD device registration. The new method is now changed to register_mtddriver 2. Some code for space release and deregistration has been added, and certain error handling methods have been updated.
This commit is contained in:
jingfei
Donny(董九柱)
parent
8fbba09895
commit
4ecdb92e61
1 changed files with 97 additions and 116 deletions
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@ -89,18 +89,14 @@
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# define CONFIG_EXAMPLES_MTDPART_NPARTITIONS 3
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#endif
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#if CONFIG_EXAMPLES_MTDPART_NPARTITIONS <= 0
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# error "CONFIG_EXAMPLES_MTDPART_NPARTITIONS must be greater than 0"
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#endif
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct mtdpart_filedesc_s
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{
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FAR char *name;
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bool deleted;
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size_t len;
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uint32_t crc;
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};
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/****************************************************************************
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* Private Data
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****************************************************************************/
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@ -117,6 +113,7 @@ static uint8_t g_simflash[MTDPART_BUFSIZE];
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#ifdef CONFIG_EXAMPLES_MTDPART_ARCHINIT
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extern FAR struct mtd_dev_s *mtdpart_archinitialize(void);
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extern void mtdpart_archuninitialize(FAR struct mtd_dev_s *dev);
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#endif
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/****************************************************************************
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@ -133,8 +130,7 @@ int main(int argc, FAR char *argv[])
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FAR struct mtd_dev_s *part[CONFIG_EXAMPLES_MTDPART_NPARTITIONS + 1];
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FAR struct mtd_geometry_s geo;
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FAR uint32_t *buffer;
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char blockname[32];
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char charname[32];
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char mtdname[32];
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size_t partsize;
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ssize_t nbytes;
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off_t nblocks;
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@ -148,6 +144,7 @@ int main(int argc, FAR char *argv[])
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int j;
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int k;
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int ret;
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int status;
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/* Create and initialize a RAM MTD FLASH driver instance */
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@ -159,8 +156,8 @@ int main(int argc, FAR char *argv[])
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if (!master)
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{
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printf("ERROR: Failed to create RAM MTD instance\n");
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fflush(stdout);
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exit(1);
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status = 1;
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exit(status);
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}
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/* Perform the IOCTL to erase the entire FLASH part */
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@ -179,22 +176,12 @@ int main(int argc, FAR char *argv[])
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* interesting.
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*/
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ret = ftl_initialize(0, master);
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ret = register_mtddriver("/dev/mtd0", master, 0775, NULL);
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if (ret < 0)
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{
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printf("ERROR: ftl_initialize /dev/mtdblock0 failed: %d\n", ret);
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fflush(stdout);
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exit(2);
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}
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/* Now create a character device on the block device */
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ret = bchdev_register("/dev/mtdblock0", "/dev/mtd0", false);
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if (ret < 0)
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{
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printf("ERROR: bchdev_register /dev/mtd0 failed: %d\n", ret);
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fflush(stdout);
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exit(3);
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printf("ERROR: register_mtddriver /dev/mtd0 failed: %d\n", ret);
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status = 2;
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goto err_master_mtd;
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}
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/* Get the geometry of the FLASH device */
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@ -203,8 +190,9 @@ int main(int argc, FAR char *argv[])
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(unsigned long)((uintptr_t)&geo));
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if (ret < 0)
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{
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ferr("ERROR: mtd->ioctl failed: %d\n", ret);
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exit(3);
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printf("ERROR: mtd->ioctl failed: %d\n", ret);
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status = 3;
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goto err_master_mtd;
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}
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printf("Flash Geometry:\n");
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@ -244,33 +232,18 @@ int main(int argc, FAR char *argv[])
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{
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printf("ERROR: mtd_partition failed. offset=%lu nblocks=%lu\n",
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(unsigned long)offset, (unsigned long)nblocks);
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fflush(stdout);
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exit(4);
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status = 4;
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goto err_part_mtd;
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}
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/* Initialize to provide an FTL block driver on the MTD FLASH
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* interface
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*/
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snprintf(mtdname, sizeof(mtdname), "/dev/mtd%d", i);
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snprintf(blockname, sizeof(blockname), "/dev/mtdblock%d", i);
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snprintf(charname, sizeof(charname), "/dev/mtd%d", i);
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ret = ftl_initialize(i, part[i]);
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ret = register_mtddriver(mtdname, part[i], 0775, NULL);
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if (ret < 0)
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{
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printf("ERROR: ftl_initialize %s failed: %d\n", blockname, ret);
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fflush(stdout);
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exit(5);
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}
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/* Now create a character device on the block device */
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ret = bchdev_register(blockname, charname, false);
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if (ret < 0)
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{
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printf("ERROR: bchdev_register %s failed: %d\n", charname, ret);
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fflush(stdout);
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exit(6);
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printf("ERROR: register_mtddriver %s failed: %d\n", mtdname, ret);
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status = 5;
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goto err_part_mtd;
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}
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}
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@ -280,8 +253,8 @@ int main(int argc, FAR char *argv[])
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if (!buffer)
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{
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printf("ERROR: failed to allocate a sector buffer\n");
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fflush(stdout);
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exit(7);
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status = 6;
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goto err_part_mtd;
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}
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/* Open the master MTD FLASH character driver for writing */
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@ -290,8 +263,8 @@ int main(int argc, FAR char *argv[])
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if (fd < 0)
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{
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printf("ERROR: open /dev/mtd0 failed: %d\n", errno);
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fflush(stdout);
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exit(8);
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status = 7;
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goto err_buf;
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}
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/* Now write the offset into every block */
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@ -317,8 +290,8 @@ int main(int argc, FAR char *argv[])
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if (nbytes < 0)
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{
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printf("ERROR: write to /dev/mtd0 failed: %d\n", errno);
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fflush(stdout);
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exit(9);
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status = 8;
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goto err_fd;
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}
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}
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}
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@ -338,13 +311,13 @@ int main(int argc, FAR char *argv[])
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/* Open the master MTD partition character driver for writing */
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snprintf(charname, sizeof(charname), "/dev/mtd%d", i);
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fd = open(charname, O_RDWR);
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snprintf(mtdname, sizeof(mtdname), "/dev/mtd%d", i);
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fd = open(mtdname, O_RDWR);
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if (fd < 0)
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{
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printf("ERROR: open %s failed: %d\n", charname, errno);
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fflush(stdout);
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exit(10);
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printf("ERROR: open %s failed: %d\n", mtdname, errno);
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status = 9;
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goto err_buf;
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}
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/* Now verify the offset in every block */
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@ -364,8 +337,8 @@ int main(int argc, FAR char *argv[])
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{
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printf("ERROR: lseek to offset %ld failed: %d\n",
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(unsigned long)sectoff, errno);
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fflush(stdout);
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exit(11);
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status = 10;
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goto err_fd;
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}
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/* Read the next block into memory */
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@ -373,22 +346,9 @@ int main(int argc, FAR char *argv[])
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nbytes = read(fd, buffer, geo.blocksize);
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if (nbytes < 0)
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{
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printf("ERROR: read from %s failed: %d\n", charname, errno);
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fflush(stdout);
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exit(12);
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}
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else if (nbytes == 0)
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{
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printf("ERROR: Unexpected end-of file in %s\n", charname);
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fflush(stdout);
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exit(13);
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}
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else if (nbytes != geo.blocksize)
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{
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printf("ERROR: Unexpected read size from %s: %ld\n",
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charname, (unsigned long)nbytes);
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fflush(stdout);
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exit(14);
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printf("ERROR: read from %s failed: %d\n", mtdname, errno);
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status = 11;
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goto err_fd;
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}
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/* Since we forced the size of the partition to be an even number
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@ -398,19 +358,19 @@ int main(int argc, FAR char *argv[])
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else if (nbytes == 0)
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{
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printf("ERROR: Unexpected end of file on %s\n", charname);
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fflush(stdout);
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exit(15);
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printf("ERROR: Unexpected end of file on %s\n", mtdname);
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status = 12;
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goto err_fd;
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}
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/* This is not expected at all */
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else if (nbytes != geo.blocksize)
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{
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printf("ERROR: Short read from %s failed: %lu\n",
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charname, (unsigned long)nbytes);
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fflush(stdout);
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exit(16);
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printf("ERROR: Short read from %s failed: %lu\n",
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mtdname, (unsigned long)nbytes);
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status = 13;
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goto err_fd;
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}
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/* Verify the offsets in the block */
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@ -421,8 +381,8 @@ int main(int argc, FAR char *argv[])
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{
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printf("ERROR: Bad offset %lu, expected %lu\n",
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(long)buffer[k], (long)check);
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fflush(stdout);
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exit(17);
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status = 14;
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goto err_fd;
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}
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/* Invert the value to indicate that we have verified
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@ -440,8 +400,8 @@ int main(int argc, FAR char *argv[])
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{
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printf("ERROR: lseek to offset %ld failed: %d\n",
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(unsigned long)sectoff, errno);
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fflush(stdout);
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exit(18);
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status = 15;
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goto err_fd;
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}
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/* Now write the block back to FLASH with the modified value */
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@ -449,16 +409,16 @@ int main(int argc, FAR char *argv[])
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nbytes = write(fd, buffer, geo.blocksize);
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if (nbytes < 0)
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{
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printf("ERROR: write to %s failed: %d\n", charname, errno);
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fflush(stdout);
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exit(19);
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printf("ERROR: write to %s failed: %d\n", mtdname, errno);
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status = 16;
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goto err_fd;
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}
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else if (nbytes != geo.blocksize)
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{
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printf("ERROR: Unexpected write size to %s: %ld\n",
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charname, (unsigned long)nbytes);
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fflush(stdout);
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exit(20);
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mtdname, (unsigned long)nbytes);
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status = 17;
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goto err_fd;
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}
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/* Get the offset to the next block */
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@ -472,15 +432,15 @@ int main(int argc, FAR char *argv[])
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if (nbytes != 0)
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{
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printf("ERROR: Expected end-of-file from %s failed: %zd %d\n",
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charname, nbytes, errno);
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fflush(stdout);
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exit(22);
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mtdname, nbytes, errno);
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status = 18;
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goto err_fd;
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}
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close(fd);
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}
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/* Now verify that all of the verifed blocks appear where we thing they
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/* Now verify that all of the verified blocks appear where we thing they
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* should on the device.
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*/
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@ -490,8 +450,8 @@ int main(int argc, FAR char *argv[])
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if (fd < 0)
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{
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printf("ERROR: open /dev/mtd0 failed: %d\n", errno);
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fflush(stdout);
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exit(23);
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status = 19;
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goto err_buf;
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}
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offset = 0;
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@ -504,22 +464,22 @@ int main(int argc, FAR char *argv[])
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nbytes = read(fd, buffer, geo.blocksize);
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if (nbytes < 0)
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{
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printf("ERROR: read from %s failed: %d\n", charname, errno);
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fflush(stdout);
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exit(24);
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printf("ERROR: read from /dev/mtd0 failed: %d\n", errno);
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status = 20;
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goto err_fd;
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}
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else if (nbytes == 0)
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{
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printf("ERROR: Unexpected end-of file in %s\n", charname);
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fflush(stdout);
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exit(25);
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printf("ERROR: Unexpected end-of file in /dev/mtd0\n");
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status = 21;
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goto err_fd;
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}
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else if (nbytes != geo.blocksize)
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{
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printf("ERROR: Unexpected read size from %s: %ld\n",
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charname, (unsigned long)nbytes);
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fflush(stdout);
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exit(26);
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printf("ERROR: Unexpected read size from /dev/mtd0: %ld\n",
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(unsigned long)nbytes);
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status = 22;
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goto err_fd;
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}
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/* Verify the values in the block */
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@ -530,19 +490,40 @@ int main(int argc, FAR char *argv[])
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{
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printf("ERROR: Bad value %lu, expected %lu\n",
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(long)buffer[k], (long)(~check));
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fflush(stdout);
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exit(27);
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status = 23;
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goto err_fd;
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}
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check += sizeof(uint32_t);
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}
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}
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close(fd);
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status = 0;
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/* And exit without bothering to clean up */
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printf("PASS: Everything looks good\n");
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err_fd:
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close(fd);
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err_buf:
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free(buffer);
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err_part_mtd:
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for (i = 1; i <= CONFIG_EXAMPLES_MTDPART_NPARTITIONS; i++)
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{
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snprintf(mtdname, sizeof(mtdname), "/dev/mtd%d", i);
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unregister_mtddriver(mtdname);
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}
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err_master_mtd:
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unregister_mtddriver("/dev/mtd0");
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#ifdef CONFIG_EXAMPLES_MTDPART_ARCHINIT
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mtdpart_archuninitialize(master);
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#else
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rammtd_uninitialize(master);
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#endif
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fflush(stdout);
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return 0;
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exit(status);
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}
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