就拉下來 make 就可以，在 x86 跟 ARM (pi ubuntu aarch64) 都 build OK。
然後就可以看
# /data/mmc extcsd read /dev/mmcblk0 ============================================= Extended CSD rev 1.8 (MMC 5.1) ============================================= 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: 0x02] 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: 0x20] Access size [ACC_SIZE: 0x07] High-capacity erase unit size [HC_ERASE_GRP_SIZE: 0x01] i.e. 512 KiB 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: 0x10] i.e. 8192 KiB 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: 0x00e90000] Device is block-addressed 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: 0x02] Out-of-interrupt busy timing [OUT_OF_INTERRUPT_TIME: 0x0a] I/O Driver Strength [DRIVER_STRENGTH: 0x1f] Card Type [CARD_TYPE: 0x57] HS200 Single Data Rate eMMC @200MHz 1.8VI/O HS Dual Data Rate eMMC @52MHz 1.8V or 3VI/O HS eMMC @52MHz - at rated device voltage(s) HS eMMC @26MHz - at rated device voltage(s) 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: 0x02] Erased memory content [ERASED_MEM_CONT: 0x00] Boot configuration bytes [PARTITION_CONFIG: 0x08] Boot Partition 1 enabled No access to boot partition Boot config protection [BOOT_CONFIG_PROT: 0x00] Boot bus Conditions [BOOT_BUS_CONDITIONS: 0x0e] High-density erase group definition [ERASE_GROUP_DEF: 0x01] 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]: 0x04 Write reliability setting register [WR_REL_SET]: 0x1f user area: the device protects existing data if a power failure occurs during a write operation partition 1: the device protects existing data if a power failure occurs during a write operation partition 2: the device protects existing data if a power failure occurs during a write operation partition 3: the device protects existing data if a power failure occurs during a write operation partition 4: the device protects existing data if a power failure occurs during a write operation Write reliability parameter register [WR_REL_PARAM]: 0x14 Device supports the enhanced def. of reliable write Enable background operations handshake [BKOPS_EN]: 0x00 H/W reset function [RST_N_FUNCTION]: 0x01 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]: 0x0001d2 i.e. 3817472 KiB Partitions attribute [PARTITIONS_ATTRIBUTE]: 0x00 Partitioning Setting [PARTITION_SETTING_COMPLETED]: 0x00 Device partition setting NOT complete 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 i.e. 0 KiB Enhanced User Data Start Address [ENH_START_ADDR]: 0x00000000 i.e. 0 bytes offset 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 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[127]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[126]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[125]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[124]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[123]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[122]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[121]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[120]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[119]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[118]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[117]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[116]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[115]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[114]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[113]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[112]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[111]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[110]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[109]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[108]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[107]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[106]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[105]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[104]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[103]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[102]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[101]]: 0x05 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[100]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[99]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[98]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[97]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[96]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[95]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[94]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[93]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[92]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[91]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[90]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[89]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[88]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[87]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[86]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[85]]: 0x01 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[84]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[83]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[82]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[81]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[80]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[79]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[78]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[77]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[76]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[75]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[74]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[73]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[72]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[71]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[70]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[69]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[68]]: 0xc8 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[67]]: 0xc8 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[66]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[65]]: 0x00 Vendor Specific Fields [VENDOR_SPECIFIC_FIELD[64]]: 0x0f Native sector size [NATIVE_SECTOR_SIZE]: 0x00 Sector size emulation [USE_NATIVE_SECTOR]: 0x00 Sector size [DATA_SECTOR_SIZE]: 0x00 1st initialization after disabling sector size emulation [INI_TIMEOUT_EMU]: 0x00 Class 6 commands control [CLASS_6_CTRL]: 0x00 Number of addressed group to be Released[DYNCAP_NEEDED]: 0x00 Exception events control [EXCEPTION_EVENTS_CTRL]: 0x0000 Exception events status[EXCEPTION_EVENTS_STATUS]: 0x0000 Extended Partitions Attribute [EXT_PARTITIONS_ATTRIBUTE]: 0x0000 Context configuration [CONTEXT_CONF[51]]: 0x00 Context configuration [CONTEXT_CONF[50]]: 0x00 Context configuration [CONTEXT_CONF[49]]: 0x00 Context configuration [CONTEXT_CONF[48]]: 0x00 Context configuration [CONTEXT_CONF[47]]: 0x00 Context configuration [CONTEXT_CONF[46]]: 0x00 Context configuration [CONTEXT_CONF[45]]: 0x00 Context configuration [CONTEXT_CONF[44]]: 0x00 Context configuration [CONTEXT_CONF[43]]: 0x00 Context configuration [CONTEXT_CONF[42]]: 0x00 Context configuration [CONTEXT_CONF[41]]: 0x00 Context configuration [CONTEXT_CONF[40]]: 0x00 Context configuration [CONTEXT_CONF[39]]: 0x00 Context configuration [CONTEXT_CONF[38]]: 0x00 Context configuration [CONTEXT_CONF[37]]: 0x00 Packed command status [PACKED_COMMAND_STATUS]: 0x00 Packed command failure index [PACKED_FAILURE_INDEX]: 0x00 Power Off Notification [POWER_OFF_NOTIFICATION]: 0x01 Control to turn the Cache ON/OFF [CACHE_CTRL]: 0x01 eMMC Firmware Version: eMMC Life Time Estimation A [EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]: 0x08 eMMC Life Time Estimation B [EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B]: 0x08 eMMC Pre EOL information [EXT_CSD_PRE_EOL_INFO]: 0x01 Secure Removal Type [SECURE_REMOVAL_TYPE]: 0x39 information is configured to be removed using a vendor defined Supported Secure Removal Type: information removed by an erase of the physical memory information removed using a vendor defined Command Queue Support [CMDQ_SUPPORT]: 0x01 Command Queue Depth [CMDQ_DEPTH]: 16 Command Enabled [CMDQ_MODE_EN]: 0x00根據working with eMMC 的說明：
It is possible to get an estimation on the health status of the device by checking the parameters
EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A and EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B.
The estimation is given in steps of 10% so a value of 0x01 means that 0% to 10% life time used.
This functionality was introduced in eMMC 5.0.
# mmc extcsd read /dev/mmcblk2 | grep EXT_CSD_DEVICE_LIFE_TIME_EST eMMC Life Time Estimation A [EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]: 0x01 eMMC Life Time Estimation B [EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B]: 0x01所以上面 example 的 eMMC 壽命已經到 70~80% 了
另外一個 command 是 fstrim
Usage: fstrim [options]用 -v 來看，真的會顯示 discard 的 size...Discard unused blocks on a mounted filesystem. Options: -a, --all trim all supported mounted filesystems -A, --fstab trim all supported mounted filesystems from /etc/fstab -o, --offset the offset in bytes to start discarding from -l, --length the number of bytes to discard -m, --minimum the minimum extent length to discard -v, --verbose print number of discarded bytes -n, --dry-run does everything, but trim -h, --help display this help -V, --version display version
ref:
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