Difference between revisions of "Firmware Upgrade"

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= MASKROM =
 
= MASKROM =
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*Avoid brick  
 
*Avoid brick  
*Simple, unified
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*Simple  
  
 
Disadvantages:
 
Disadvantages:
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= U-boot =
 
= U-boot =
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Rockchip mainline u-boot have support various upgrade ways, such as rockusb/fastboot/ums, each of them could be used.
 
Rockchip mainline u-boot have support various upgrade ways, such as rockusb/fastboot/ums, each of them could be used.
  
It could be entered by issuing "reboot ums/fastboot/rockusb" from linux, <del>or add the&nbsp;[https://github.com/rockchip-linux/u-boot/blob/release/board/rockchip/kylin_rk3036/kylin_rk3036.c#L34 board-spefic key-detection ]code</del><small>(We have add common key detect fucntion after 20171218)</small>.
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It could be entered by issuing "reboot ums/fastboot/rockusb" from linux, <del>or add the&nbsp;[https://github.com/rockchip-linux/u-boot/blob/release/board/rockchip/kylin_rk3036/kylin_rk3036.c#L34 board-spefic key-detection ]code</del>
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<small>(Common key detect support is added after 20171218, now the board can enter rockusb mode by pressing recovery key)</small>.
  
It's also possible to do network/usb-disk upgrade in u-boot, though you must be familiar with u-boot to use them.
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It's also possible to do network/usb-disk upgrade in u-boot.
  
 
Belows are the&nbsp;''advantages''&nbsp;and disadvantages of using u-boot.
 
Belows are the&nbsp;''advantages''&nbsp;and disadvantages of using u-boot.

Latest revision as of 04:17, 21 December 2017

Overall

This guide provides information which will help you choose a firmware upgrade way.

 


MASKROM

MASKROM is the simplest way. 

Belows are the advantages and disadvantages of using maskrom.

Advantages:

  • Avoid brick
  • Simple

Disadvantages:

  • Need a maskrom key

Support update from

  • USB OTG

 

U-boot

Rockchip mainline u-boot have support various upgrade ways, such as rockusb/fastboot/ums, each of them could be used.

It could be entered by issuing "reboot ums/fastboot/rockusb" from linux, or add the board-spefic key-detection code

(Common key detect support is added after 20171218, now the board can enter rockusb mode by pressing recovery key).

It's also possible to do network/usb-disk upgrade in u-boot.

Belows are the advantages and disadvantages of using u-boot.

Advantages:

  • Common

Disadvantages:

  • Must be familiar with u-boot

Support update from

  • USB OTG
  • USB DISK
  • Network

 

Linux

Both yocto and debian use deb as the package manager, so firmware upgrade could be done by deb installation.

(SDK build scripts can pack kernel/u-boot in deb)

Advantages:

  • standard
  • user-friendly

Disadvantages:

  •  could be brick

 


SD-Card Recovery

By changing boot order in u-boot, it's possible to let u-boot load kernel and rootfs from sd-card first.

We could use it to create a sd-card recovery image. When the board boot into sd-card, the init script run and install kernel/u-boot debian packages, which burn firmware to eMMC.

Advantages:

  • Convenient

Disadvantages:

  • Slow

 

Initramfs/Recovery

Advantages:

  • Powerful

Disadvantages:

  • Slow