On Tue, Nov 08, 2016 at 11:21:10PM +0800, Haojian Zhuang wrote:
> Declare fields in ECSD structure. And drop the original 128 words
> arrary.

Functionality-wise, I'm happy with this, if it is moved to directly
after "add SPEC_VERS field in CSD structure".

A few comments inline with regards to improving readability.

> 
> Signed-off-by: Haojian Zhuang <haojian.zhu...@linaro.org>
> ---
>  EmbeddedPkg/Universal/MmcDxe/Mmc.h               | 157 
> ++++++++++++++++++++++-
>  EmbeddedPkg/Universal/MmcDxe/MmcIdentification.c |   4 +-
>  2 files changed, 158 insertions(+), 3 deletions(-)
> 
> diff --git a/EmbeddedPkg/Universal/MmcDxe/Mmc.h 
> b/EmbeddedPkg/Universal/MmcDxe/Mmc.h
> index 8f30a9a..d3e9b71 100644
> --- a/EmbeddedPkg/Universal/MmcDxe/Mmc.h
> +++ b/EmbeddedPkg/Universal/MmcDxe/Mmc.h
> @@ -133,13 +133,168 @@ typedef struct {
>    UINT8   CSD_STRUCTURE:      2; // CSD structure [127:126]
>  } CSD;
>  
> +typedef struct {
> +  UINT8   RESERVED_1[16];                     // Reserved [15:0]
> +  UINT8   SECURE_REMOVAL_TYPE;                // Secure Removal Type [16:16]
> +  UINT8   PRODUCT_STATE_AWARENESS_ENABLEMENT; // Product state awareness 
> enablement [17:17]
> +  UINT8   MAX_PRE_LOADING_DATA_SIZE[4];       // MAX pre loading data size 
> [21:18]
> +  UINT8   PRE_LOADING_DATA_SIZE[4];           // Pre loading data size 
> [25:22]
> +  UINT8   FFU_STATUS;                         // FFU Status [26:26]
> +  UINT8   RESERVED_2[2];                      // Reserved [28:27]
> +  UINT8   MODE_OPERATION_CODES;               // Mode operation codes [29:29]
> +  UINT8   MODE_CONFIG;                        // Mode config [30:30]
> +  UINT8   RESERVED_3;                         // Reserved [31:31]
> +  UINT8   FLUSH_CACHE;                        // Flushing of the cache 
> [32:32]
> +  UINT8   CACHE_CTRL;                         // Control to turn the cache 
> ON/OFF [33:33]
> +  UINT8   POWER_OFF_NOTIFICATION;             // Power Off Notification 
> [34:34]
> +  UINT8   PACKED_FAILURE_INDEX;               // Packed command failure 
> index [35:35]
> +  UINT8   PACKED_COMMAND_STATUS;              // Packed command status 
> [36:36]
> +  UINT8   CONTEXT_CONF[15];                   // Context configuration 
> [51:37]
> +  UINT8   EXT_PARTITIONS_ATTRIBUTE[2];        // Extended partitions 
> attribute [53:52]
> +  UINT8   EXCEPTION_EVENTS_STATUS[2];         // Exception events status 
> [55:54]
> +  UINT8   EXCEPTION_EVENTS_CTRL[2];           // Exception events control 
> [57:56]
> +  UINT8   DYNCAP_NEEDED;                      // Number of addressed group 
> to be released [58:58]
> +  UINT8   CLASS_6_CTRL;                       // Class 6 commands control 
> [59:59]
> +  UINT8   INI_TIMEOUT_EMU;                    // 1st initialization after 
> disabling sector size emulation [60:60]
> +  UINT8   DATA_SECTOR_SIZE;                   // Sector size [61:61]
> +  UINT8   USE_NATIVE_SECTOR;                  // Sector size emulation 
> [62:62]
> +  UINT8   NATIVE_SECTOR_SIZE;                 // Native sector size [63:63]
> +  UINT8   VENDOR_SPECIFIC_FIELD[64];          // Vendor specific fields 
> [127:64]
> +  UINT8   RESERVED_4[2];                      // Reserved [129:128]
> +  UINT8   PROGRAM_CID_CSD_DDR_SUPPORT;        // Program CID/CSD in DDR mode 
> support [130:130]
> +  UINT8   PERIODIC_WAKEUP;                    // Periodic wake-up [131:131]
> +  UINT8   TCASE_SUPPORT;                      // Package case temperature is 
> controlled [132:132]
> +  UINT8   PRODUCTION_STATE_AWARENESS;         // Production state awareness 
> [133:133]
> +  UINT8   SEC_BAD_BLK_MGMNT;                  // Bad block management mode 
> [134:134]
> +  UINT8   RESERVED_5;                         // Reserved [135:135]
> +  UINT8   ENH_START_ADDR[4];                  // Enhanced user data start 
> address [139:136]
> +  UINT8   ENH_SIZE_MULT[3];                   // Enhanced user data area 
> size [142:140]
> +  UINT8   GP_SIZE_MULT[12];                   // General purpose partition 
> size [154:143]
> +  UINT8   PARTITION_SETTING_COMPLETED;        // Partitioning setting 
> [155:155]
> +  UINT8   PARTITIONS_ATTRIBUTE;               // Partitions attribute 
> [156:156]
> +  UINT8   MAX_ENH_SIZE_MULT[3];               // Max enhanced area size 
> [159:157]
> +  UINT8   PARTITIONING_SUPPORT;               // Partitioning [160:160]
> +  UINT8   HPI_MGMT;                           // HPI management [161:161]
> +  UINT8   RST_N_FUNCTION;                     // H/W reset function [162:162]
> +  UINT8   BKOPS_EN;                           // Enable background 
> operations handshake [163:163]
> +  UINT8   BKOPS_START;                        // Manually start background 
> operations [164:164]
> +  UINT8   SANITIZE_START;                     // Start sanitize operation 
> [165:165]
> +  UINT8   WR_REL_PARAM;                       // Write reliability parameter 
> register [166:166]
> +  UINT8   WR_REL_SET;                         // Write reliability setting 
> register [167:167]
> +  UINT8   RPMB_SIZE_MULT;                     // RPMB size [168:168]
> +  UINT8   FW_CONFIG;                          // FW configuration [169:169]
> +  UINT8   RESERVED_6;                         // Reserved [170:170]
> +  UINT8   USER_WP;                            // User area write protection 
> register [171:171]
> +  UINT8   RESERVED_7;                         // Reserved [172:172]
> +  UINT8   BOOT_WP;                            // Boot area write protection 
> register [173:173]
> +  UINT8   BOOT_WP_STATUS;                     // Boot write protection 
> register [174:174]
> +  UINT8   ERASE_GROUP_DEF;                    // High-density erase group 
> definition [175:175]
> +  UINT8   RESERVED_8;                         // Reserved [176:176]
> +  UINT8   BOOT_BUS_CONDITIONS;                // Boot bus conditions 
> [177:177]
> +  UINT8   BOOT_CONFIG_PROT;                   // Boot config protection 
> [178:178]
> +  UINT8   PARTITION_CONFIG;                   // Partition config [179:179]
> +  UINT8   RESERVED_9;                         // Reserved [180:180]
> +  UINT8   ERASED_MEM_CONT;                    // Erased memory content 
> [181:181]
> +  UINT8   RESERVED_10;                        // Reserved [182:182]
> +  UINT8   BUS_WIDTH;                          // Bus width mode [183:183]
> +  UINT8   RESERVED_11;                        // Reserved [184:184]
> +  UINT8   HS_TIMING;                          // High-speed interface timing 
> [185:185]
> +  UINT8   RESERVED_12;                        // Reserved [186:186]
> +  UINT8   POWER_CLASS;                        // Power class [187:187]
> +  UINT8   RESERVED_13;                        // Reserved [188:188]
> +  UINT8   CMD_SET_REV;                        // Command set revision 
> [189:189]
> +  UINT8   RESERVED_14;                        // Reserved [190:190]
> +  UINT8   CMD_SET;                            // Command set [191:191]
> +  UINT8   EXT_CSD_REV;                        // Extended CSD revision 
> [192:192]
> +  UINT8   RESERVED_15;                        // Reserved [193:193]
> +  UINT8   CSD_STRUCTURE;                      // CSD Structure [194:194]
> +  UINT8   RESERVED_16;                        // Reserved [195:195]
> +  UINT8   DEVICE_TYPE;                        // Device type [196:196]
> +  UINT8   DRIVER_STRENGTH;                    // I/O Driver strength 
> [197:197]
> +  UINT8   OUT_OF_INTERRUPT_TIME;              // Out-of-interrupt busy 
> timing [198:198]
> +  UINT8   PARTITION_SWITCH_TIME;              // Partition switching timing 
> [199:199]
> +  UINT8   PWR_CL_52_195;                      // Power class for 52MHz at 
> 1.95V 1 R [200:200]
> +  UINT8   PWR_CL_26_195;                      // Power class for 26MHz at 
> 1.95V 1 R [201:201]
> +  UINT8   PWR_CL_52_360;                      // Power class for 52MHz at 
> 3.6V 1 R [202:202]
> +  UINT8   PWR_CL_26_360;                      // Power class for 26MHz at 
> 3.6V 1 R [203:203]
> +  UINT8   RESERVED_17;                        // Reserved [204:204]
> +  UINT8   MIN_PERF_R_4_26;                    // Minimum read performance 
> for 4bit at 26MHz [205:205]
> +  UINT8   MIN_PERF_W_4_26;                    // Minimum write performance 
> for 4bit at 26MHz [206:206]
> +  UINT8   MIN_PERF_R_8_26_4_52;               // Minimum read performance 
> for 8bit at 26MHz, for 4bit at 52MHz [207:207]
> +  UINT8   MIN_PERF_W_8_26_4_52;               // Minimum write performance 
> for 8bit at 26MHz, for 4bit at 52MHz [208:208]
> +  UINT8   MIN_PERF_R_8_52;                    // Minimum read performance 
> for 8bit at 52MHz [209:209]
> +  UINT8   MIN_PERF_W_8_52;                    // Minimum write performance 
> for 8bit at 52MHz [210:210]
> +  UINT8   RESERVED_18;                        // Reserved [211:211]
> +  UINT32  SEC_COUNT;                          // Sector count [215:212]

So, this field is the only one we currently look at.
In the code below, this replaces the field previously identified vi
EMMC_ECSD_SIZE_OFFSET. Where does this change in name come from?

Could all SEC_ fields referring to SECTOR rbe renamed SECTOR_, and all
referring to SECURE be renamed SECURE_?

> +  UINT8   SLEEP_NOTIFICATION_TIME;            // Sleep notification timout 
> [216:216]
> +  UINT8   S_A_TIMEOUT;                        // Sleep/awake timeout 
> [217:217]
> +  UINT8   PRODUCTION_STATE_AWARENESS_TIMEOUT; // Production state awareness 
> timeout [218:218]
> +  UINT8   S_C_VCCQ;                           // Sleep current (VCCQ) 
> [219:219]
> +  UINT8   S_C_VCC;                            // Sleep current (VCC) 
> [220:220]
> +  UINT8   HC_WP_GRP_SIZE;                     // High-capacity write protect 
> group size [221:221]
> +  UINT8   REL_WR_SEC_C;                       // Reliable write sector count 
> [222:222]
> +  UINT8   ERASE_TIMEOUT_MULT;                 // High-capacity erase timeout 
> [223:223]
> +  UINT8   HC_ERASE_GRP_SIZE;                  // High-capacity erase unit 
> size [224:224]
> +  UINT8   ACC_SIZE;                           // Access size [225:225]
> +  UINT8   BOOT_SIZE_MULTI;                    // Boot partition size 
> [226:226]
> +  UINT8   RESERVED_19;                        // Reserved [227:227]
> +  UINT8   BOOT_INFO;                          // Boot information [228:228]
> +  UINT8   SEC_TRIM_MULT;                      // Secure TRIM Multiplier 
> [229:229]
> +  UINT8   SEC_ERASE_MULT;                     // Secure Erase Multiplier 
> [230:230]
> +  UINT8   SEC_FEATURE_SUPPORT;                // Secure Feature Support 
> [231:231]
> +  UINT8   TRIM_MULT;                          // TRIM Multiplier [232:232]
> +  UINT8   RESERVED_20;                        // Reserved [233:233]
> +  UINT8   MIN_PREF_DDR_R_8_52;                // Minimum read performance 
> for 8bit at 52MHz in DDR mode [234:234]
> +  UINT8   MIN_PREF_DDR_W_8_52;                // Minimum write performance 
> for 8bit at 52MHz in DDR mode [235:235]
> +  UINT8   PWR_CL_200_130;                     // Power class for 200MHz at 
> VCCQ=1.3V, VCC=3.6V [236:236]
> +  UINT8   PWR_CL_200_195;                     // Power class for 200MHz at 
> VCCQ=1.95V, VCC=3.6V [237:237]
> +  UINT8   PWR_CL_DDR_52_195;                  // Power class for 52MHz, DDR 
> at 1.95V [238:238]
> +  UINT8   PWR_CL_DDR_52_360;                  // Power class for 52Mhz, DDR 
> at 3.6V [239:239]
> +  UINT8   RESERVED_21;                        // Reserved [240:240]
> +  UINT8   INI_TIMEOUT_AP;                     // 1st initialization time 
> after partitioning [241:241]
> +  UINT8   CORRECTLY_PRG_SECTORS_NUM[4];       // Number of correctly 
> programmed sectors [245:242]
> +  UINT8   BKOPS_STATUS;                       // Background operations 
> status [246:246]
> +  UINT8   POWER_OFF_LONG_TIME;                // Power off notification 
> (long) timeout [247:247]
> +  UINT8   GENERIC_CMD6_TIME;                  // Generic CMD6 timeout 
> [248:248]
> +  UINT8   CACHE_SIZE[4];                      // Cache size [252:249]
> +  UINT8   PWR_CL_DDR_200_360;                 // Power class for 200MHz, DDR 
> at VCC=3.6V [253:253]
> +  UINT8   FIRMWARE_VERSION[8];                // Firmware version [261:254]
> +  UINT8   DEVICE_VERSION[2];                  // Device version [263:262]
> +  UINT8   OPTIMAL_TRIM_UNIT_SIZE;             // Optimal trim unit size 
> [264:264]
> +  UINT8   OPTIMAL_WRITE_SIZE;                 // Optimal write size [265:265]
> +  UINT8   OPTIMAL_READ_SIZE;                  // Optimal read size [266:266]
> +  UINT8   PRE_EOL_INFO;                       // Pre EOL information 
> [267:267]
> +  UINT8   DEVICE_LIFE_TIME_EST_TYP_A;         // Device life time estimation 
> type A [268:268]
> +  UINT8   DEVICE_LIFE_TIME_EST_TYP_B;         // Device life time estimation 
> type B [269:269]
> +  UINT8   VENDOR_PROPRIETARY_HEALTH_REPORT[32];         // Vendor 
> proprietary health report [301:270]
> +  UINT8   NUMBER_OF_FW_SECTORS_CORRECTLY_PROGRAMMED[4]; // Number of FW 
> sectors correctly programmed [305:302]
> +  UINT8   RESERVED_22[181];                   // Reserved [486:306]
> +  UINT8   FFU_ARG[4];                         // FFU argument [490:487]
> +  UINT8   OPERATION_CODE_TIMEOUT;             // Operation codes timeout 
> [491:491]
> +  UINT8   FFU_FEATURES;                       // FFU features [492:492]
> +  UINT8   SUPPORTED_MODES;                    // Supported modes [493:493]
> +  UINT8   EXT_SUPPORT;                        // Extended partitions 
> attribute support [494:494]
> +  UINT8   LARGE_UNIT_SIZE_M1;                 // Large unit size [495:495]
> +  UINT8   CONTEXT_CAPABILITIES;               // Context management 
> capabilities [496:496]
> +  UINT8   TAG_RES_SIZE;                       // Tag resource size [497:497]
> +  UINT8   TAG_UNIT_SIZE;                      // Tag unit size [498:498]
> +  UINT8   DATA_TAG_SUPPORT;                   // Data tag support [499:499]
> +  UINT8   MAX_PACKED_WRITES;                  // Max packed write commands 
> [500:500]
> +  UINT8   MAX_PACKED_READS;                   // Max packed read commands 
> [501:501]
> +  UINT8   BKOPS_SUPPORT;                      // Background operations 
> support [502:502]
> +  UINT8   HPI_FEATURES;                       // HPI features [503:503]
> +  UINT8   S_CMD_SET;                          // Supported command sets 
> [504:504]
> +  UINT8   EXT_SECURITY_ERR;                   // Extended security commands 
> error [505:505]
> +  UINT8   RESERVED_23[6];                     // Reserved [511:506]
> +} ECSD;
> +
>  typedef struct  {
>    UINT16    RCA;
>    CARD_TYPE CardType;
>    OCR       OCRData;
>    CID       CIDData;
>    CSD       CSDData;
> -  UINT32    ECSD[128];      // MMC V4 extended card specific
> +  ECSD      ECSDData;                         // MMC V4 extended card 
> specific
>  } CARD_INFO;
>  
>  typedef struct _MMC_HOST_INSTANCE {
> diff --git a/EmbeddedPkg/Universal/MmcDxe/MmcIdentification.c 
> b/EmbeddedPkg/Universal/MmcDxe/MmcIdentification.c
> index 578fcb6..c5897de 100644
> --- a/EmbeddedPkg/Universal/MmcDxe/MmcIdentification.c
> +++ b/EmbeddedPkg/Universal/MmcDxe/MmcIdentification.c
> @@ -90,7 +90,7 @@ EmmcIdentificationMode (
>      DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): ECSD fetch error, 
> Status=%r.\n", Status));
>    }
>  
> -  Status = Host->ReadBlockData (Host, 0, 512, (UINT32 
> *)&(MmcHostInstance->CardInfo.ECSD));
> +  Status = Host->ReadBlockData (Host, 0, 512, (UINT32 
> *)&(MmcHostInstance->CardInfo.ECSDData));
>    if (EFI_ERROR (Status)) {
>      DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): ECSD read error, 
> Status=%r.\n", Status));
>      return Status;
> @@ -103,7 +103,7 @@ EmmcIdentificationMode (
>    Media->LogicalBlocksPerPhysicalBlock = 1;
>    Media->IoAlign = 4;
>    // Compute last block using bits [215:212] of the ECSD
> -  Media->LastBlock = MmcHostInstance->CardInfo.ECSD[EMMC_ECSD_SIZE_OFFSET] - 
> 1; // eMMC isn't supposed to report this for
> +  Media->LastBlock = MmcHostInstance->CardInfo.ECSDData.SEC_COUNT - 1; // 
> eMMC isn't supposed to report this for

This deletes the only use of the EMMC_ECSD_SIZE_OFFSET define - could
we delete the definition of that too?

>    // Cards <2GB in size, but the model does.
>  
>    // Setup card type
> -- 
> 2.7.4
> 
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