Add method for triggering Sanitize command
This patch adds a method to trigger Sanitize command to MMC.
The Sanitize command is used for deleting the unmapped memory region
of the MMC device.
Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org>
Acked-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
diff --git a/mmc_cmds.c b/mmc_cmds.c
index b407f65..5473a20 100644
--- a/mmc_cmds.c
+++ b/mmc_cmds.c
@@ -767,3 +767,31 @@
out_free:
return ret;
}
+
+int do_sanitize(int nargs, char **argv)
+{
+ int fd, ret;
+ char *device;
+
+ CHECK(nargs != 2, "Usage: mmc sanitize </path/to/mmcblkX>\n",
+ exit(1));
+
+ device = argv[1];
+
+ fd = open(device, O_RDWR);
+ if (fd < 0) {
+ perror("open");
+ exit(1);
+ }
+
+ ret = write_extcsd_value(fd, EXT_CSD_SANITIZE_START, 1);
+ if (ret) {
+ fprintf(stderr, "Could not write 0x%02x to EXT_CSD[%d] in %s\n",
+ 1, EXT_CSD_SANITIZE_START, device);
+ exit(1);
+ }
+
+ return ret;
+
+}
+