Extract a function which sets the OTP PARTITION_SETTING_COMPLETE bit; once this bit is set there are many other parameters in EXT_CSD which can no longer be set.
Multiple OTP partition settings can be achieved by calling 'set' commands with '-n' on all except for the last. Signed-off-by: Ben Gardiner <[email protected]> --- mmc_cmds.c | 77 ++++++++++++++++++++++++++++++++++++++------------------------ 1 file changed, 47 insertions(+), 30 deletions(-) diff --git a/mmc_cmds.c b/mmc_cmds.c index ba4f9cf..5ea19ac 100644 --- a/mmc_cmds.c +++ b/mmc_cmds.c @@ -449,6 +449,51 @@ unsigned int get_hc_erase_grp_size(__u8 *ext_csd) return ext_csd[224]; } +int set_partitioning_setting_completed(int dry_run, const char * const device, + int fd) +{ + int ret; + + if (dry_run) { + fprintf(stderr, "NOT setting PARTITION_SETTING_COMPLETED\n"); + fprintf(stderr, "These changes will not take effect neither " + "now nor after a power cycle\n"); + return 1; + } + + fprintf(stderr, "setting OTP PARTITION_SETTING_COMPLETED!\n"); + ret = write_extcsd_value(fd, EXT_CSD_PARTITION_SETTING_COMPLETED, 0x1); + if (ret) { + fprintf(stderr, "Could not write 0x1 to " + "EXT_CSD[%d] in %s\n", + EXT_CSD_PARTITION_SETTING_COMPLETED, device); + return 1; + } + + __u32 response; + ret = send_status(fd, &response); + if (ret) { + fprintf(stderr, "Could not get response to SEND_STATUS " + "from %s\n", device); + return 1; + } + + if (response & R1_SWITCH_ERROR) { + fprintf(stderr, "Setting OTP PARTITION_SETTING_COMPLETED " + "failed on %s\n", device); + return 1; + } + + fprintf(stderr, "Setting OTP PARTITION_SETTING_COMPLETED on " + "%s SUCCESS\n", device); + fprintf(stderr, "Device power cycle needed for settings to " + "take effect.\n" + "Confirm that PARTITION_SETTING_COMPLETED bit is set " + "using 'extcsd read' after power cycle\n"); + + return 0; +} + int do_enh_area_set(int nargs, char **argv) { __u8 value; @@ -579,38 +624,10 @@ int do_enh_area_set(int nargs, char **argv) exit(1); } - if (dry_run) - { - fprintf(stderr, "NOT setting PARTITION_SETTING_COMPLETED\n"); - exit(1); - } + printf("Done setting ENH_USR area on %s\n", device); - fprintf(stderr, "setting OTP PARTITION_SETTING_COMPLETED!\n"); - ret = write_extcsd_value(fd, EXT_CSD_PARTITION_SETTING_COMPLETED, 0x1); - if (ret) { - fprintf(stderr, "Could not write 0x1 to " - "EXT_CSD[%d] in %s\n", - EXT_CSD_PARTITION_SETTING_COMPLETED, device); + if (!set_partitioning_setting_completed(dry_run, device, fd)) exit(1); - } - - __u32 response; - ret = send_status(fd, &response); - if (ret) { - fprintf(stderr, "Could not get response to SEND_STATUS from %s\n", device); - exit(1); - } - - if (response & R1_SWITCH_ERROR) - { - fprintf(stderr, "Setting ENH_USR area failed on %s\n", device); - exit(1); - } - - fprintf(stderr, "Setting ENH_USR area on %s SUCCESS\n", device); - fprintf(stderr, "Device power cycle needed for settings to take effect.\n" - "Confirm that PARTITION_SETTING_COMPLETED bit is set using 'extcsd read'" - "after power cycle\n"); return 0; } -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
