NXP Semiconductors ASUG, Руководство пользователя

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Table 8. Images for i.MX 8QuadXPlus MEK (continued)
partition-table-7GB.img GPT table image for 8 GB boot storage.
partition-table-28GB.img GPT table image for 32 GB boot storage.
vbmeta-imx8qxp.img Android Verify Boot metadata Image for i.MX 8QuadXPlus MEK board to support
LVDS-to-HDMI display.
system.img System image.
vendor.img Vendor image.
dtbo-imx8qxp.img Device Tree Image for i.MX 8QuadXPlus MEK.
rpmb_key_test.bin Prebuilt test RPMB key. It can be used to set the RPMB key as fixed 32 bytes 0x00.
testkey_public_rsa4096.bin Prebuilt AVB public key. It is extracted from the default AVB private key.
boot.img is an Android image that stores Image and ramdisk together. It can also store other information such as
the kernel boot command line and machine name. This information can be configured in android.mk. It can avoid
touching boot loader code to change any default boot arguments.
NOTE
5 Programming Images
The images from the prebuilt release package or created from source code contain the U-Boot boot loader, system image, GPT
image, vendor image, and vbmeta image. At a minium, the storage devices on the development system (MMC/SD) must be
programmed with the U-Boot boot loader. The i.MX 8 series boot process determines what storage device to access based on
the switch settings. When the boot loader is loaded and begins execution, the U-Boot environment space is then read to determine
how to proceed with the boot process. For U-Boot environment settings, see Section
Booting .
The following download methods can be used to write the Android System Image:
• UUU to download all images to the eMMC/SD card.
• fsl-sdcard-partition.sh to download all images to the SD card.
• fastboot_imx_flashall script to download all images to the eMMC/SD storage.
5.1 System on eMMC/SD
The images needed to create an Android system on eMMC/SD can either be obtained from the release package or be built
from source.
The images needed to create an Android system on eMMC/SD are listed below:
• U-Boot image: u-boot.imx
• GPT table image: partition-table.img
• Android dtbo image: dtbo.img
• Android boot image: boot.img
• Android system image: system.img
• Android verify boot metadata image: vbmeta.img
• Android vendor image: vendor.img
5.1.1 Storage partitions
The layout of the eMMC card for Android system is shown below:
NXP Semiconductors
Programming Images
Android
™
User's Guide, Rev. P9.0.0_2.3.2, 6 March 2020
User's Guide 9 / 31