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mtd: spi-nor: Add spi flash lock config option

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Provide an explicit configuration option to disable default "lock"
of any flash chip which supports locking. By disabling the lock
config will save some amount of memory and also don't expose the
lock functionality to the users i.e., via sf protect command.

Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@amd.com>
Link: https://lore.kernel.org/r/20231003031715.5343-2-venkatesh.abbarapu@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
This commit is contained in:
Venkatesh Yadav Abbarapu
2023-10-03 08:47:13 +05:30
committed by Michal Simek
parent bd9ff681bd
commit 188c803d08
3 changed files with 17 additions and 2 deletions
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4
cmd/sf.c
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@@ -604,7 +604,7 @@ static int do_spi_flash(struct cmd_tbl *cmdtp, int flag, int argc,
ret = do_spi_flash_read_write(argc, argv);
else if (strcmp(cmd, "erase") == 0)
ret = do_spi_flash_erase(argc, argv);
else if (strcmp(cmd, "protect") == 0)
else if (IS_ENABLED(CONFIG_SPI_FLASH_LOCK) && strcmp(cmd, "protect") == 0)
ret = do_spi_protect(argc, argv);
else if (IS_ENABLED(CONFIG_CMD_SF_TEST) && !strcmp(cmd, "test"))
ret = do_spi_flash_test(argc, argv);
@@ -629,8 +629,10 @@ U_BOOT_LONGHELP(sf,
"sf update addr offset|partition len - erase and write `len' bytes from memory\n"
" at `addr' to flash at `offset'\n"
" or to start of mtd `partition'\n"
#ifdef CONFIG_SPI_FLASH_LOCK
"sf protect lock/unlock sector len - protect/unprotect 'len' bytes starting\n"
" at address 'sector'"
#endif
#ifdef CONFIG_CMD_SF_TEST
"\nsf test offset len - run a very basic destructive test"
#endif