diff options
| author | Ben Gardiner <bengardiner@nanometrics.ca> | 2013-05-30 17:12:49 -0400 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2013-06-27 11:11:05 -0400 |
| commit | 4e85023654b356511612547207a4cb643fb3db16 (patch) | |
| tree | 61dade13b9888d36526ccf1aceba79e7b3415ef9 | |
| parent | 68f490b54b53c715db06e55f9595a672d1c0690e (diff) | |
| download | mmc-utils-4e85023654b356511612547207a4cb643fb3db16.tar.gz | |
report if card is block-addressed and effect on ENH_START_ADDR
Signed-off-by: Ben Gardiner <bengardiner@nanometrics.ca>
Signed-off-by: Chris Ball <cjb@laptop.org>
| -rw-r--r-- | mmc.h | 4 | ||||
| -rw-r--r-- | mmc_cmds.c | 28 |
2 files changed, 29 insertions, 3 deletions
@@ -37,6 +37,10 @@ #define EXT_CSD_HPI_FEATURE 503 #define EXT_CSD_BKOPS_SUPPORT 502 /* RO */ #define EXT_CSD_BOOT_INFO 228 /* R/W */ +#define EXT_CSD_SEC_COUNT_3 215 +#define EXT_CSD_SEC_COUNT_2 214 +#define EXT_CSD_SEC_COUNT_1 213 +#define EXT_CSD_SEC_COUNT_0 212 #define EXT_CSD_PART_SWITCH_TIME 199 #define EXT_CSD_BOOT_CFG 179 #define EXT_CSD_PART_CONFIG 179 @@ -424,6 +424,21 @@ int do_status_get(int nargs, char **argv) return ret; } +unsigned int get_sector_count(__u8 *ext_csd) +{ + return (ext_csd[EXT_CSD_SEC_COUNT_3] << 24) | + (ext_csd[EXT_CSD_SEC_COUNT_2] << 16) | + (ext_csd[EXT_CSD_SEC_COUNT_1] << 8) | + ext_csd[EXT_CSD_SEC_COUNT_0]; +} + +int is_blockaddresed(__u8 *ext_csd) +{ + unsigned int sectors = get_sector_count(ext_csd); + + return (sectors > (2u * 1024 * 1024 * 1024) / 512); +} + int do_read_extcsd(int nargs, char **argv) { __u8 ext_csd[512], ext_csd_rev, reg; @@ -591,9 +606,14 @@ int do_read_extcsd(int nargs, char **argv) /* A441/A43: reserved [218] */ printf("Sleep/awake timeout [S_A_TIMEOUT: 0x%02x]\n", ext_csd[217]); /* A441/A43: reserved [216] */ - printf("Sector Count [SEC_COUNT: 0x%08x]\n", (ext_csd[215] << 24) | - (ext_csd[214] << 16) | (ext_csd[213] << 8) | - ext_csd[212]); + + unsigned int sectors = get_sector_count(ext_csd); + printf("Sector Count [SEC_COUNT: 0x%08x]\n", sectors); + if (is_blockaddresed(ext_csd)) + printf(" Device is block-addressed\n"); + else + printf(" Device is NOT block-addressed\n"); + /* A441/A43: reserved [211] */ printf("Minimum Write Performance for 8bit:\n"); printf(" [MIN_PERF_W_8_52: 0x%02x]\n", ext_csd[210]); @@ -753,6 +773,8 @@ int do_read_extcsd(int nargs, char **argv) ext_csd[EXT_CSD_ENH_START_ADDR_0]; printf("Enhanced User Data Start Address" " [ENH_START_ADDR]: 0x%06x\n", reg); + printf(" i.e. %lu bytes offset\n", (is_blockaddresed(ext_csd) ? + 1l : 512l) * reg); /* A441]: reserved [135] */ printf("Bad Block Management mode" |