android系统镜像:boot.img kernel.img ramdisk.img system.img userdata.img cache.img recovery.img

本文详细解析了 Android 系统中的关键分区,包括 boot.img、ramdisk.img、system.img 等,揭示了这些分区的功能及它们如何共同作用于设备的启动过程。

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这里写图片描述

  • boot.img(kernel.img+ramdisk.img)
  • ramdisk.img(/)
  • system.img(/system)
  • userdata.img(/data)
  • cache.img(/cache)

  • recovery.img(kernel.img+ramdisk-recovery.img)

  • ramdisk-recovery.img(/)

split_bootimg.pl boot.img
gunzip boot.gz
cpio -i -F boot

#ifdef __MTK_UFS_BOOTING #define BOOTDEV bootdevice #define FSTYPE_RAW emmc #endif #ifdef __MTK_EMMC_SUPPORT #define BOOTDEV bootdevice #define FSTYPE_RAW emmc #endif #define DEVPATH(_part) /dev/block/platform/BOOTDEV/by-name/_part #define FSTAB_RAW(_part) DEVPATH(_part) /_part FSTYPE_RAW defaults defaults #define FSTAB_RAW2(_part,_mnt) DEVPATH(_part) /_mnt FSTYPE_RAW defaults defaults #if defined(__MTK_UFS_BOOTING) || defined(__MTK_EMMC_SUPPORT) #ifndef __MTK_SYSIMG_FSTYPE #define __MTK_SYSIMG_FSTYPE ext4 #endif #ifndef __MTK_VNDIMG_FSTYPE #define __MTK_VNDIMG_FSTYPE ext4 #endif #ifndef __MTK_ODMIMG_FSTYPE #define __MTK_ODMIMG_FSTYPE ext4 #endif #ifndef __MTK_DATAIMG_FSTYPE #ifndef __USERDATA_USE_F2FS #define __MTK_DATAIMG_FSTYPE ext4 #else #define __MTK_DATAIMG_FSTYPE f2fs #endif #endif /* Can overwrite FDE setting by defining __MTK_FDE_NO_FORCE and __MTK_FDE_TYPE_FILE in this file */ /* For example, you can un-comment the following line to disable FDE for all projects in this platform. */ //#define __MTK_FDE_NO_FORCE /*#ifdef __MTK_FDE_NO_FORCE #define FLAG_FDE_AUTO encryptable #else #define FLAG_FDE_AUTO forceencrypt #endif*/ //zj120250722 //#define FLAG_FDE_AUTO encryptable #ifdef __MTK_FDE_TYPE_FILE #ifdef __MTK_FDE_TO_FBE #define FLAG_FDE_TYPE forcefdeorfbe #else #define FLAG_FDE_TYPE fileencryption #endif #else #define FLAG_FDE_TYPE #endif #if defined(__SYSTEM_AS_ROOT) || defined(__MTK_AB_OTA_UPDATER) #define SYS_MOUNT_POINT / #else #define SYS_MOUNT_POINT /system #endif #ifdef __MTK_AB_OTA_UPDATER #define FLAG_SLOT_SELECT slotselect #else #define FLAG_SLOT_SELECT #endif #ifdef __MTK_SEC_VERITY #ifdef __MTK_AB_OTA_UPDATER #define FSMGR_FLAG_SYSTEM wait,slotselect,verify,recoveryonly #else #define FSMGR_FLAG_SYSTEM wait,verify,recoveryonly #endif #else #ifdef __MTK_AB_OTA_UPDATER #define FSMGR_FLAG_SYSTEM wait,slotselect,recoveryonly #else #define FSMGR_FLAG_SYSTEM wait,recoveryonly #endif #endif #ifdef __MTK_FDE_TYPE_FILE #ifdef __MTK_FDE_TO_FBE #define FSMGR_FLAG_DATA wait,check,quota,reservedsize=128M,formattable,resize,FLAG_FDE_TYPE=DEVPATH(metadata) #else #define FSMGR_FLAG_DATA wait,check,quota,reservedsize=128M,formattable,resize,FLAG_FDE_TYPE=aes-256-xts #endif #else #define FSMGR_FLAG_DATA wait,check,quota,reservedsize=128M,formattable,resize,FLAG_FDE_AUTO=DEVPATH(metadata),FLAG_FDE_TYPE #endif #define FS_FLAG_DISCARD noatime,nosuid,nodev,noauto_da_alloc,discard #define FS_FLAG_NO_DISCARD noatime,nosuid,nodev,noauto_da_alloc #define FS_FLAG_COMMIT noatime,nosuid,nodev,noauto_da_alloc,commit=1,nodelalloc #define FSMGR_FLAG_FMT wait,check,formattable #define FSMGR_FLAG_CHK wait,check #ifndef __USERDATA_USE_F2FS #define FS_FLAG_DATA FS_FLAG_NO_DISCARD,errors=panic #else #define FS_FLAG_DATA noatime,nosuid,nodev,discard,noflush_merge #endif DEVPATH(system) SYS_MOUNT_POINT __MTK_SYSIMG_FSTYPE ro FSMGR_FLAG_SYSTEM #ifdef __VENDOR_PARTITION_SUPPORT DEVPATH(vendor) /vendor __MTK_VNDIMG_FSTYPE ro FSMGR_FLAG_SYSTEM #endif #ifdef __ODM_PARTITION_SUPPORT DEVPATH(odm) /odm __MTK_ODMIMG_FSTYPE ro FSMGR_FLAG_SYSTEM #endif DEVPATH(userdata) /data __MTK_DATAIMG_FSTYPE FS_FLAG_DATA FSMGR_FLAG_DATA #ifndef __MTK_AB_OTA_UPDATER DEVPATH(cache) /cache ext4 FS_FLAG_DISCARD FSMGR_FLAG_FMT #endif DEVPATH(protect1) /mnt/vendor/protect_f ext4 FS_FLAG_COMMIT FSMGR_FLAG_FMT DEVPATH(protect2) /mnt/vendor/protect_s ext4 FS_FLAG_COMMIT FSMGR_FLAG_FMT DEVPATH(nvdata) /mnt/vendor/nvdata ext4 FS_FLAG_DISCARD FSMGR_FLAG_FMT DEVPATH(nvcfg) /mnt/vendor/nvcfg ext4 FS_FLAG_COMMIT FSMGR_FLAG_FMT #ifdef __PERSIST_PARTITION_SUPPORT DEVPATH(persist) /mnt/vendor/persist ext4 FS_FLAG_COMMIT FSMGR_FLAG_FMT #endif /devices/platform/externdevice* auto auto defaults voldmanaged=sdcard1:auto,encryptable=userdata /devices/platform/mt_usb* auto vfat defaults voldmanaged=usbotg:auto #ifdef __MTK_FACTORY_RESET_PROTECTION_SUPPORT FSTAB_RAW2(frp,persistent) #endif FSTAB_RAW(nvram) FSTAB_RAW(proinfo) FSTAB_RAW2(lk,bootloader) FSTAB_RAW2(lk2,bootloader2) FSTAB_RAW2(para,misc) FSTAB_RAW(boot) FSTAB_RAW(recovery) #ifdef __MTK_RECOVERY_RAMDISK_SPLIT FSTAB_RAW(recovery_ramdisk) FSTAB_RAW(recovery_vendor) #endif FSTAB_RAW(logo) FSTAB_RAW(expdb) FSTAB_RAW(seccfg) #if (defined(__MTK_TEE_SUPPORT) || defined(__MTK_ATF_SUPPORT)) FSTAB_RAW(tee1) FSTAB_RAW(tee2) #endif #ifdef __MTK_TINYSYS_SCP_SUPPORT FSTAB_RAW(scp1) FSTAB_RAW(scp2) #endif #ifdef __MTK_TINYSYS_SSPM_SUPPORT FSTAB_RAW(sspm_1) FSTAB_RAW(sspm_2) #endif #ifdef __MTK_EFUSE_WRITER_SUPPORT FSTAB_RAW(efuse) #endif FSTAB_RAW(md1img) FSTAB_RAW(md1dsp) FSTAB_RAW(md1arm7) FSTAB_RAW(md3img) #ifdef __MTK_VPU_SUPPORT FSTAB_RAW(cam_vpu1) FSTAB_RAW(cam_vpu2) FSTAB_RAW(cam_vpu3) #endif #ifdef __SPM_FW_USE_PARTITION FSTAB_RAW(spmfw) #endif FSTAB_RAW(boot_para) #ifdef __MTK_DTBO_FEATURE FSTAB_RAW(odmdtbo) FSTAB_RAW(dtbo) #endif #ifdef __BOARD_AVB_ENABLE FSTAB_RAW(vbmeta) #endif #endif fstab.mt6765的全文是这样,要设置为上面描述的内容有问题么?
最新发布
07-23
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