MTK Android Driver ：memory

3.1 型号配置：

3.1.1 CUSTOM_MEMORY_HDR(需要确认是否是MTK认证的flash ic)

mediatek\custom\$(PROJECT)\preloader\inc\custom_MemoryDevice.h

#defineBOARD_ID MT6577_EVB

#defineCS_PART_NUMBER[0] H9TP32A4GDMCPR_KDM

#defineCS_PART_NUMBER[1] KMKUS000VM_B410

备注：新增flash ic添加到此处，flash可以做到兼容；不能兼容相同IC Id的memeory
ic.



3.2 特定项目不同类型分区定义信息（是否定义、顺序）：

mediatek\custom\prj\kernel\core\src\partition.c

structpart_name_map g_part_name_map[PART_MAX_COUNT] = {

{"preloader", PART_PRELOADER, "rawdata", 0, 0, 0},

{"dsp_bl", PART_DSP_DL, "rawdata", 1, 0, 0},

{"mbr", PART_MBR, "raw data", 2, 1, 1},

{"ebr1", PART_EBR1, "raw data", 3, 1, 1},

{"pmt", PART_PMT, "raw data", 4, 0, 0},

{"nvram", PART_NVRAM, "rawdata", 5, 0, 0},

{"seccfg", PART_SECURE, "raw data", 6, 0, 0},

{"uboot", PART_UBOOT, "raw data", 7, 1, 1},

{"boot", PART_BOOTIMG, "raw data", 8, 1, 1},

{"recovery", PART_RECOVERY, "rawdata", 9, 1, 1},

{"sec_ro", PART_SECSTATIC, "ext4", 10, 0, 0},

{"misc", PART_MISC, "raw data", 11, 0, 0},

{"logo", PART_LOGO, "raw data", 12, 1, 1},

{"expdb", PART_APANIC, "raw data", 13, 0, 0},

{"system", PART_ANDSYSIMG, "ext4", 14, 1, 1},

{"cache", PART_CACHE, "ext4", 15, 1, 1},

{"userdata", PART_USER, "ext4", 16, 1, 1},

{"fat", PART_FAT, "fat", 17, 0, 0},

};



3.3 emmc scat 分区大小设置(emmc) :

可对emmc进行分区，修改preloader\systemimage\userdata\FAT等各个分区。

\alps\mediatek\build\tools\ptgen\MT6577\partition_table_MT6577.xls

备注：Cache分区需要保持在512mb左右，否则系统会比较慢，响应迟缓。



3.4 FLASH参数配置文件位置(MemoryDeviceList_MT6577.xls)：

MEMORY_DEVICE_XLS =

mediatek\build\tools\emigen\$(MTK_PLATFORM)\MemoryDeviceList_$(MTK_PLATFORM).xls

.xls文件含三个页面：

MT6577(page one):配置Flash Vendor Id 对应的硬件参数。

NAND(page two):

emmc_region(pagethree)



3.5 Flash驱动电压修改，读写速度方式修改：

mediatek\custom\konka73_gb\kernel\core\src\board.c

struct msdc_hw msdc0_hw = {

.clk_src = 1,

.cmd_edge =MSDC_SMPL_FALLING,

.data_edge =MSDC_SMPL_FALLING,

.clk_drv = 5, //: 0 //memory驱动电压

.cmd_drv = 5, //: 0

.dat_drv = 5, // : 0

#ifdefMTK_EMMC_SUPPORT

.data_pins = 8,

#else

.data_pins = 4,

#endif

.data_offset = 0,

#ifdefMTK_EMMC_SUPPORT

.flags = MSDC_SYS_SUSPEND | MSDC_HIGHSPEED,//memory读写速度

//.flags = MSDC_SYS_SUSPEND,

#else

.flags =MSDC_SDCARD_FLAG,

#endif

3.6 emmc FAT分区划分：

emmc型号、emmc软件分区都会影响FAT分区的大小。

验证FAT Size需要对应emmc型号机器下载对应emmc软件分区的软件，不能预先下载FAT部分（影响实际FAT分区大小）：

adb shell

cat /proc/emmc

cat /proc/partition获取大小。

3.7 ddr认证列表和时序集成(mtk或者ddr原厂提供)

alps\mediatek\build\tools\TabletEmiList\MT6582\TabletMemoryDeviceList_MT6582.xls