On 02/21/2012 02:43 AM, Chris Ball wrote: > Hi Giuseppe, > > On Mon, Feb 20 2012, Giuseppe CAVALLARO wrote: >> This patch enhances the debug information reported >> for the mmc card by parsing the extended CSD registers >> obviously according to all the current specifications. > > Thanks, this is great! I've pushed your patch. > > I also moved Johan's writeprotect code into its own function, so now > the command set is: > > mmc extcsd read <device> > Print extcsd data from <device>. > mmc writeprotect get <device> > Determine the eMMC writeprotect status of <device>. > mmc writeprotect set <device> > Set the eMMC writeprotect status of <device>. > > (And "mmc writeprotect get" shares code for parsing that section of the > ext_csd with "mmc extcsd read".) Hi Chris. Write protect is only supported the "power-on". If there is no problem to support "permanent", i will send the patch. Is any problem to support "permanent"? > > I don't think I have eMMC 4.5 hardware yet either; here's output from a > 4.41 device: > > ============================================= > Extended CSD rev 1.5 (MMC 4.41) > ============================================= > > Card Supported Command sets [S_CMD_SET: 0x01] > HPI Features [HPI_FEATURE: 0x01]: implementation based on CMD13 > Background operations support [BKOPS_SUPPORT: 0x00] > Background operations status [BKOPS_STATUS: 0x00] > 1st Initialisation Time after programmed sector [INI_TIMEOUT_AP: 0x0a] > Power class for 52MHz, DDR at 3.6V [PWR_CL_DDR_52_360: 0x00] > Power class for 52MHz, DDR at 1.95V [PWR_CL_DDR_52_195: 0x00] > Minimum Performance for 8bit at 52MHz in DDR mode: > [MIN_PERF_DDR_W_8_52: 0x00] > [MIN_PERF_DDR_R_8_52: 0x00] > TRIM Multiplier [TRIM_MULT: 0x02] > Secure Feature support [SEC_FEATURE_SUPPORT: 0x15] > Secure Erase Multiplier [SEC_ERASE_MULT: 0x96] > Secure TRIM Multiplier [SEC_TRIM_MULT: 0x96] > Boot Information [BOOT_INFO: 0x07] > Device supports alternative boot method > Device supports dual data rate during boot > Device supports high speed timing during boot > Boot partition size [BOOT_SIZE_MULTI: 0x08] > Access size [ACC_SIZE: 0x06] > High-capacity erase unit size [HC_ERASE_GRP_SIZE: 0x04] > High-capacity erase timeout [ERASE_TIMEOUT_MULT: 0x01] > Reliable write sector count [REL_WR_SEC_C: 0x01] > High-capacity W protect group size [HC_WP_GRP_SIZE: 0x04] > Sleep current (VCC) [S_C_VCC: 0x08] > Sleep current (VCCQ) [S_C_VCCQ: 0x07] > Sleep/awake timeout [S_A_TIMEOUT: 0x11] > Sector Count [SEC_COUNT: 0x00760000] > Minimum Write Performance for 8bit: > [MIN_PERF_W_8_52: 0x0a] > [MIN_PERF_R_8_52: 0x0a] > [MIN_PERF_W_8_26_4_52: 0x0a] > [MIN_PERF_R_8_26_4_52: 0x0a] > Minimum Write Performance for 4bit: > [MIN_PERF_W_4_26: 0x0a] > [MIN_PERF_R_4_26: 0x0a] > Power classes registers: > [PWR_CL_26_360: 0x00] > [PWR_CL_52_360: 0x00] > [PWR_CL_26_195: 0x00] > [PWR_CL_52_195: 0x00] > Partition switching timing [PARTITION_SWITCH_TIME: 0x01] > Out-of-interrupt busy timing [OUT_OF_INTERRUPT_TIME: 0x02] > Card Type [CARD_TYPE: 0x07] > CSD structure version [CSD_STRUCTURE: 0x02] > Command set [CMD_SET: 0x00] > Command set revision [CMD_SET_REV: 0x00] > Power class [POWER_CLASS: 0x00] > High-speed interface timing [HS_TIMING: 0x01] > Erased memory content [ERASED_MEM_CONT: 0x00] > Boot configuration bytes [PARTITION_CONFIG: 0x00] > Not boot enable > No access to boot partition > Boot config protection [BOOT_CONFIG_PROT: 0x00] > Boot bus Conditions [BOOT_BUS_CONDITIONS: 0x00] > High-density erase group definition [ERASE_GROUP_DEF: 0x00] > Boot write protection status registers [BOOT_WP_STATUS]: 0x00 > Boot Area Write protection [BOOT_WP]: 0x00 > Power ro locking: possible > Permanent ro locking: possible > ro lock status: not locked > User area write protection register [USER_WP]: 0x00 > FW configuration [FW_CONFIG]: 0x00 > RPMB Size [RPMB_SIZE_MULT]: 0x01 > Write reliability setting register [WR_REL_SET]: 0x1f > Write reliability parameter register [WR_REL_PARAM]: 0x04 > Enable background operations handshake [BKOPS_EN]: 0x00 > H/W reset function [RST_N_FUNCTION]: 0x00 > HPI management [HPI_MGMT]: 0x00 > Partitioning Support [PARTITIONING_SUPPORT]: 0x03 > Device support partitioning feature > Device can have enhanced tech. > Max Enhanced Area Size [MAX_ENH_SIZE_MULT]: 0x0000ec > Partitions attribute [PARTITIONS_ATTRIBUTE]: 0x00 > Partitioning Setting [PARTITION_SETTING_COMPLETED]: 0x00 > General Purpose Partition Size > [GP_SIZE_MULT_4]: 0x000000 > [GP_SIZE_MULT_3]: 0x000000 > [GP_SIZE_MULT_2]: 0x000000 > [GP_SIZE_MULT_1]: 0x000000 > Enhanced User Data Area Size [ENH_SIZE_MULT]: 0x000000 > Enhanced User Data Start Address [ENH_START_ADDR]: 0x000000 > Bad Block Management mode [SEC_BAD_BLK_MGMNT]: 0x00 > Here's output from eMMC4.5 device. ============================================= Extended CSD rev 1.6 (MMC 4.5) ============================================= Card Supported Command sets [S_CMD_SET: 0x01] HPI Features [HPI_FEATURE: 0x01]: implementation based on CMD13 Background operations support [BKOPS_SUPPORT: 0x01] Max Packet Read Cmd [MAX_PACKED_READS: 0x3f] Max Packet Write Cmd [MAX_PACKED_WRITES: 0x3f] Data TAG support [DATA_TAG_SUPPORT: 0x01] Data TAG Unit Size [TAG_UNIT_SIZE: 0x04] Tag Resources Size [TAG_RES_SIZE: 0x00] Context Management Capabilities [CONTEXT_CAPABILITIES: 0x05] Large Unit Size [LARGE_UNIT_SIZE_M1: 0x07] Extended partition attribute support [EXT_SUPPORT: 0x03] Generic CMD6 Timer [GENERIC_CMD6_TIME: 0x0a] Power off notification [POWER_OFF_LONG_TIME: 0x3c] Cache Size [CACHE_SIZE] is 65536 KiB Background operations status [BKOPS_STATUS: 0x00] 1st Initialisation Time after programmed sector [INI_TIMEOUT_AP: 0x1e] Power class for 52MHz, DDR at 3.6V [PWR_CL_DDR_52_360: 0x00] Power class for 52MHz, DDR at 1.95V [PWR_CL_DDR_52_195: 0x00] Power class for 200MHz at 3.6V [PWR_CL_200_360: 0x00] Power class for 200MHz, at 1.95V [PWR_CL_200_195: 0x00] Minimum Performance for 8bit at 52MHz in DDR mode: [MIN_PERF_DDR_W_8_52: 0x00] [MIN_PERF_DDR_R_8_52: 0x00] TRIM Multiplier [TRIM_MULT: 0x02] Secure Feature support [SEC_FEATURE_SUPPORT: 0x55] Boot Information [BOOT_INFO: 0x07] Device supports alternative boot method Device supports dual data rate during boot Device supports high speed timing during boot Boot partition size [BOOT_SIZE_MULTI: 0x10] Access size [ACC_SIZE: 0x07] High-capacity erase unit size [HC_ERASE_GRP_SIZE: 0x01] High-capacity erase timeout [ERASE_TIMEOUT_MULT: 0x01] Reliable write sector count [REL_WR_SEC_C: 0x01] High-capacity W protect group size [HC_WP_GRP_SIZE: 0x50] Sleep current (VCC) [S_C_VCC: 0x07] Sleep current (VCCQ) [S_C_VCCQ: 0x07] Sleep/awake timeout [S_A_TIMEOUT: 0x11] Sector Count [SEC_COUNT: 0x01d5a000] Minimum Write Performance for 8bit: [MIN_PERF_W_8_52: 0x00] [MIN_PERF_R_8_52: 0x00] [MIN_PERF_W_8_26_4_52: 0x00] [MIN_PERF_R_8_26_4_52: 0x00] Minimum Write Performance for 4bit: [MIN_PERF_W_4_26: 0x00] [MIN_PERF_R_4_26: 0x00] Power classes registers: [PWR_CL_26_360: 0x00] [PWR_CL_52_360: 0x00] [PWR_CL_26_195: 0x00] [PWR_CL_52_195: 0x00] Partition switching timing [PARTITION_SWITCH_TIME: 0x01] Out-of-interrupt busy timing [OUT_OF_INTERRUPT_TIME: 0x03] I/O Driver Strength [DRIVER_STRENGTH: 0x00] Card Type [CARD_TYPE: 0x07] CSD structure version [CSD_STRUCTURE: 0x02] Command set [CMD_SET: 0x00] Command set revision [CMD_SET_REV: 0x00] Power class [POWER_CLASS: 0x00] High-speed interface timing [HS_TIMING: 0x01] Erased memory content [ERASED_MEM_CONT: 0x00] Boot configuration bytes [PARTITION_CONFIG: 0x48] No access to boot partition Boot config protection [BOOT_CONFIG_PROT: 0x01] Boot bus Conditions [BOOT_BUS_CONDITIONS: 0x01] High-density erase group definition [ERASE_GROUP_DEF: 0x00] Boot write protection status registers [BOOT_WP_STATUS]: 0x00 Boot Area Write protection [BOOT_WP]: 0x00 Power ro locking: possible Permanent ro locking: possible ro lock status: not locked User area write protection register [USER_WP]: 0x00 FW configuration [FW_CONFIG]: 0x00 RPMB Size [RPMB_SIZE_MULT]: 0x01 Write reliability setting register [WR_REL_SET]: 0x1f Write reliability parameter register [WR_REL_PARAM]: 0x05 Enable background operations handshake [BKOPS_EN]: 0x00 H/W reset function [RST_N_FUNCTION]: 0x00 HPI management [HPI_MGMT]: 0x01 Partitioning Support [PARTITIONING_SUPPORT]: 0x07 Device support partitioning feature Device can have enhanced tech. Max Enhanced Area Size [MAX_ENH_SIZE_MULT]: 0x0000bb Partitions attribute [PARTITIONS_ATTRIBUTE]: 0x00 Partitioning Setting [PARTITION_SETTING_COMPLETED]: 0x00 General Purpose Partition Size [GP_SIZE_MULT_4]: 0x000000 [GP_SIZE_MULT_3]: 0x000000 [GP_SIZE_MULT_2]: 0x000000 [GP_SIZE_MULT_1]: 0x000000 Enhanced User Data Area Size [ENH_SIZE_MULT]: 0x000000 Enhanced User Data Start Address [ENH_START_ADDR]: 0x000000 Bad Block Management mode [SEC_BAD_BLK_MGMNT]: 0x00 Periodic Wake-up [PERIODIC_WAKEUP]: 0x00 Program CID/CSD in DDR mode support [PROGRAM_CID_CSD_DDR_SUPPORT]: 0x01 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
