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标题: S5P4418/X4418开发板映像烧写指引 [打印本页]

作者: armeasy 时间: 2015-4-30 11:35
标题: S5P4418/X4418开发板映像烧写指引
/***** www.9tripod.com  ********************************************************************/
/***** huangdongchao    *******************************************************************/
/***** 20150428    ************************************************************************/

20150428:Initial update
1.
Images information:
Bootloader:
|                \
├── 2ndboot.bin ---- |
├── nsih ------ | => ubootpak.bin
├── u-boot.bin --- /

Kernel:
|                \
├── ramdisk.img -- | => boot.img
└── zImage ------- /

Filesystem:
└── system.img --------------------- /

Tools:
├── s5p4418-sdmmc.sh -- For burnning ubootpak.bin to external booting SDCARD

/*******************************************************************************************/
2.
How to compile:
1)bootloader(ubootpak.bin)
./build.sh -u

2)kernel
./build.sh -k

3)system(boot.img, systme.img, userdata.img, cache.img)
./build.sh -s

4)build all once
./build.sh -a
or
./build.sh

Notice:
before compile, to run: ./build.sh -h
for some references.

/*******************************************************************************************/
3.
fastboot update function:
BOOTLOADER:
fastboot flash ubootpak ubootpak.bin
or
fastboot flash 2ndboot 2ndboot.bin
fastboot flash bootloader u-boot.bin

BOOT IMAGE:
fastboot flash boot boot.img

FILESYSTEM:
fastboot flash system system.img

USERDATA:
fastboot flash userdata userdata.img

CACHE:
fastboot flash cache cache.img

/*******************************************************************************************/
4.
SD card update function:

Case 1: when emmc(inand) is not empty

1)to be ready one SD card, create a folder "x4418-android" in sd card root directory.

2)cp the images: ubootpak.bin boot.img system.img userdata.img cache.img, to x4418-android.

3)in folder x4418-android,create file "env.txt",it is used to configure which images to be updated.
eg:
ubootpak=1
boot=1
system=1
userdata=0
cache=0

'1' means 'to be updated'
'0' means 'do not be updated'

so above information means:to update ubootpak.bin boot.img system.img, do not update userdata.img cache.img

Notice:
when env.txt is not existent, or it is empty, it will be to update ubootpak.bin boot.img system.img default.

Case 2: when emmc(inand) is empty; we need to make a booting sd card.

1)use tools gparted to partition SD card: front space reserved 128MB; other format fat32 filesystem.

2)run:sudo mkfs.vfat /dev/sdb1  (or sdc1,sde1),to format sd card to FAT32.

3)write ubootpak into sd card.
To run: sudo ./s5p4418-sdmmc.sh /dev/sdb ubootpak.bin

4)create a folder "x4418-android" in sd card root directory.

3)cp the images: ubootpak.bin boot.img system.img userdata.img cache.img, to x4418-android.

4)in folder x4418-android,create file "env.txt",it is used to configure which images to be updated.
eg:
ubootpak=1
boot=1
system=1
userdata=0
cache=0

'1' means 'to be updated'
'0' means 'do not be updated'

so above information means:to update ubootpak.bin boot.img system.img, do not update userdata.img cache.img

Notice:
when env.txt is not existent, or it is empty, it will be to update ubootpak.bin boot.img system.img default.

/*******************************************************************************************/
5.
CPU boot up order:
SD0 --> eMMC(SD2) --> USB

when sd card has been writen ubootpak.bin and be inserted into SD0, cpu boot up from SD card.
or, it will boot up from eMMC.
or, if eMMC is empty, it will boot up form USB.

作者: zk2015 时间: 2015-5-20 16:21
它是否支持用SD卡升级呢？

作者: lly 时间: 2015-6-1 12:10
支持，查看用户手册，里面有介绍

作者: ach_dmatek816 时间: 2015-9-16 15:21
请问，2ndboot和nsih这两个文件是如何合并生成2ndboot.bin文件的呢？

作者: yuxuefly 时间: 2015-9-30 20:54
Failed to mount ext2 filesystem...
使用SD卡烧写镜像，emmc(inand) is empty，出现的错误，如何解决？

作者: yuxuefly 时间: 2015-9-30 20:55
Failed to mount ext2 filesystem...
使用SD卡烧写镜像，emmc(inand) is empty，出现的错误，如何解决？

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